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SA Roofing is the only publication in South Africa that is dedicated exclusively to the residential, commercial and industrial roofing and re-roofing industries.
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JULY 2016 ISSUE: 81WWW.TRADEMAX.CO.ZA SA R36 EACH INCL. / R360 PER ANNUM INCL.
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Tel: 022 709 7000 I Web: www.dsp.co.za l E-mail: [email protected]
JULY 2016 ISSUE: 81
EDITOR’S COMMENTS ................................................................................................ 2UPCOMING EVENTS .................................................................................................... 4LEGISLATION ................................................................................................................. 7INSULATION - ERRATUM AND CORRECTION ........................................... 8-10LIGHT STEEL ROOFING ...................................................................................... 12-13 COVER STORY ....................................................................................................... 16-19 SAFETY .....................................................................................................................20-21INDUSTRY TRAINING ...............................................................................................23COMPANY NEWS .......................................................................................................24HVAC ...............................................................................................................................26LIGHT GAUGE STEEL TRUSSES ........................................................................28-29LIGHTING ......................................................................................................................30INDUSTRY STANDARDS ...........................................................................................32PRODUCT NEWS ................................................................................................. 34-35PRODUCT NEWS ..................................................................................................36-37ARCHITECTURAL AWARDS ............................................................................ 39-43CLADDING ............................................................................................................ 44-45SOLAR ROOFTOPS.....................................................................................................47INDUSTRY EVENT ......................................................................................................48
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Trademax Publications
SA Roofing Tel: 0861 SA ROOF (0861 727 663) Fax: 0866 991 346Email: [email protected]
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PUBLISHER: Billy Perrin
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EDITOR: Celéste Perrin
ADVERTISING: Jacqui Marsh
LAYOUT & DESIGN: Craig Patterson
SUBSCRIPTIONS: Belinda Thwesha
DISCLAIMER
The views expressed herein are not necessarily those of Trademax Publications. Although we have done our best to ensure the accuracy of our content, neither Trademax Publications nor SA Roofing magazine will be held liable for any views expressed or information disseminated, in editorial content or advertisements, in this issue.
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On an international scale, ‘Brexit’ is inescapable at the moment. The UK’s momentous decision a few days ago to exit the European Union is a move that has
undoubtedly pleased some, shocked some, and angered others. And while global economic uncertainty may be prevalent right at the outset of this historic decision (and might even be sustained for the short term), I cannot help but wonder which doors will be closing, and which will be opening, and for whom. I’m sure my thinking is far too simplistic and overly positive at this stage, but there’s no denying that the ramifications of Brexit will trickle down to impact South African trade, so might there be new opportunities lurking within the complexities that surrounded the UK vote? Time will tell, and soon enough.
On the local front, thankfully on a much less complicated scale, the highly anticipated Cape Construction and Interbuild Africa 2016 trade expos are only a few weeks away. SA Roofing is very excited to again be a media partner to these events, which both offer a truly great opportunity for industry players of all sizes to either connect and establish or reconnect and further advance existing business relationships.
We wouldn’t miss the opportunity to show off our publication, and thereby our advertisers and other contributors, nor to see you there in person.
Even closer to the mark, this edition of SA Roofing provides an opportunity for us to correct a mistake that inadvertently made its way into the May edition. (See page 8.) And in doing so, we are making full use of the occasion to put an even bigger spotlight on the issue, which is insulation related. The fact that insulation is one of the most important aspects of energy efficiency in roofing is coincidental and irrelevant – we appreciate the opportunity to set the facts straight. But we couldn’t have done it without reader feedback. And this brings home the point that SA Roofing provides an opportunity for us to share and engage in what matters to us most on a professional level – all things roofing. On that positive note, let me take this opportunity to thank you for your support of SA Roofing while saying goodbye until next time. I hope you enjoy the read.
Celéste
Opportunity The word opportunity holds a very positive connotation for me – much more so than the word chance, which I think could sound almost risky when seen out of context. And at this juncture, I find that opportunities abound. Yet, at the same time, I am reminded of something I heard recently: Risk is the price you pay for opportunity.
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Thursday, June 23, 2016 11:22:02 AM
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THE INSTITUTE FOR TIMBER CONSTRUCTION (ITC-SA)ANNUAL TIMBER ENGINEERED PRODUCT AWARDS19 AUGUST 2016 (DURING INTERBUILD AFRICA 2016)EXPO CENTRE NASREC, JHBEmail [email protected] for more info
INTERBUILD AFRICA 2016 (CO-LOCATED SHOWS: GLASS EXPO AFRICA, PLUMBDRAIN AFRICA, ECOAFRIBUILD AND HARDEX AFRICA)17 – 20 AUGUST 2016, EXPO CENTRE NASREC, JHBVisit www.interbuild.co.za for more info
NEW! WOOD WORLD SOUTH AFRICA (RUNNING ALONGSIDE INTERBUILD AFRICA 2016 IN HALL 5) Visit www.woodworldsa.co.za for more info
TIMBER ROOF STRUCTURE WORKSHOP PRESENTED BY: WOLF PROFESSIONAL SERVICES
18 – 19 AUGUST 2016: CENTURION, GAUTENG27 – 28 OCTOBER 2016: SALT ROCK, KZNVisit www.wolfpro.co.za for more info
GBCSAGREEN BUILDING CONVENTION 201626 – 28 JULY 2016, SANDTON CONVENTION CENTREVisit www.gbcsaconvention.org.za for more info
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The Cape Construction Trade Expo is centred around the building and construction industry in the Western Cape. The forum covers the entire value chain and targets small, medium and large enterprises. The event hosts a conference with sessions presented by expert speakers, an interactive exhibition with the latest products, tools and technologies, as well as free-to-attend workshops with commercial and DIY content. Now in its fourth year, the Cape Construction Trade Expo has continued to grow in popularity and is widely acknowledged as the must-attend event for construction professionals.
CAPE CONSTRUCTION CONFERENCE & TRADE EXPO
11 – 12 AUGUST 2016 | CTICC, CAPE TOWNVisit www.cape-construction.co.za for more info
WIN AND YOU’LL THINK YOU’RE A CELEBRITY
THE SASSDA COLUMBUS STAINLESS AWARDS CALL FOR ENTRIES
ENTER THE 2016 SASSDA COLUMBUS STAINLESS AWARDS. ENTRIES CLOSE 29 JULY Scan the QR code or visit www.sassda.co.zafor more info
Proudly sponsored by Supported by
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SAS1603-002 Stainless Awards AD Stainless Steel Mag.indd 2 2016/06/09 2:31 PM
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A leaking roof is unfortunately something that most homeowners are all too familiar with. Fortunately the law provides a possible solution to this problem: The
builder who originally built the home is obliged to fix the problem. The solution for the homeowner lies in s13(2) of the Housing Consumers Protection Measures Act, No 95 of 1998 (Act).
THE LAWSection 13(2) of the Act can be divided into two parts:
1. The first deals with the warranties that the builder provides to the owner, which are guarantees, or promises, that the builder makes in terms of the construction work performed.
2. The second part of s13(2), following on the warranties, identifies the remedies available should the builder breach these warranties.
BUILDER WARRANTIES• What promises does the builder make when he builds a home?
According to s13(2) the builder warrants that the house will be constructed in a workmanlike manner and shall be fit for habitation. In addition, the Act requires that the builder build according to the NHBRC Technical Requirements (prescribed national building standards) and in accordance with the plans and specifications for the home.
• So what then when the roof starts leaking? The second part of s13(2) entitles the homeowner to demand that the builder acts on the warranties provided.
Section 13(2) states that the builder is required, at its own cost, to:
• Repair any major structural defects; • Repair any deviation from the plans and specifications;
and • Specifically repair roof leaks when the leak is attributable
to poor workmanship, design or materials.
HOMEOWNER PROTECTIONThe protection explained above is also available to persons who purchased homes rather than built them. This is because the warranty that the builder extends is transferred from one homeowner to the next whenever the home is sold.
A limitation on the ability of the new homeowner to enforce these remedies would be if an agreement had been reached between the builder and the original housing consumer that limits the number of years for which the builder would provide these warranties. The period of the warranties would then be whatever the parties agreed to, but cannot be less than the minimum periods prescribed for in s13(2). In the case of leaking roofs, the minimum period is 12 months from the date of occupation.
The duty of the builder to repair will be triggered by a demand being sent to the builder to repair the leaking roof in accordance with the builder’s warranties.
Should the builder fail to act on the demand, a specific performance application for compliance with the warranty would be the next step.
Who must repair that leaking roof?
Hidden remedies in the Housing Consumers Protection Measures Act mean that small roof leaks do not necessarily have to mean big headaches for the
consumer. Builders should take note. Article by: Adine Abro and Ernst Muller, Cliffe Dekker Hofmeyr
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On page 35 of the May 2016 issue of SA Roofing, under the heading MINIMUM TOTAL R-VALUES OF ROOFS, it was stated that: ‘The U-value measures
how effective a material is as an insulator, or its thermal conductivity.’ This is not correct, since the U-value refers to a material’s thermal transmittance, or the transfer of heat through a material. The sentence that followed is therefore also incorrect: ‘This thermal conductivity refers to how quickly heat is lost from it, and is measured in watts per m² per Kelvin.’ SA Roofing apologizes for any confusion caused by the above misstatements. TIPSASA, the Thermal Insulation Products & Systems Association SA, has provided the following helpful and important information to clarify the measurement values pertaining to thermal performance. Specifically, this article serves to explain:
1. K-value (thermal conductivity)2. U-value (thermal transmittance) 3. R-value (thermal resistance)
MEASURING INSULATION PERFORMANCEThermal insulation refers to materials, or a combination thereof, that provide resistance to heat flow. The insulating capability of a material is measured for thermal conductivity (k). Low thermal conductivity is equivalent to high insulating capability (R-value). The thermal performance of all components and systems, except windows and doors, is expressed in terms of R-value. For windows and doors, performance is expressed in terms of U-value.
1. K-VALUE: THERMAL CONDUCTIVITY The K-value, or thermal conductivity, is defined as the property of a material that indicates its ability to conduct heat through its body under steady state conditions.
The K-value is expressed in watts per meter per Kelvin: W/(m. k.)
2. U-VALUE: THERMAL TRANSMITTANCE
Sometimes insulation is rated in terms of its thermal transmittance (U-value), rather than its R-value.
The U-value measures the transfer of heat through a material, a building element or sandwich panel (thermal transmittance), whereas the R-value measures the resistance to heat transfer. U-values are often used in technical literature, especially to indicate the thermal properties of glass and to calculate heat losses and gains.
The U-value is the reciprocal of the R-value: R=1/U or U=1/R. For example, with an R-value of 2.0, the U-value is ½ or 0.5.
U-values are expressed using the metric units (W/m².K) where:
• W refers to the amount of heat transmitted across the face or through the material in watts;
• m² refers to one metre squared of the material of a specified thickness; and
• K or ‘degree Kelvin’ refers to each °C temperature difference across the face of the materials or through the material.
A smaller U-value results in lower heat flow, and therefore less heat loss. Higher U-values mean greater heat loss.
3. R-VALUE: THERMAL RESISTANCE
Insulation materials are rated for their performance in restricting heat transfer. This is expressed as the R-value, also known as thermal resistance. So, the R-value is a measure of resistance to heat flow through a given thickness of material. As such, the R-value is a guide to its performance as an insulator: The higher the R-value, the more thermal resistance the material has (i.e. resistance to heat flow), and the better the insulation it will provide.
Defining the values of thermal performanceErratum: In the May 2016 edition of SA Roofing we featured an article on the insulation benefits offered by thatch, drawn from ‘A Guide to Thatch Construction in South Africa,’ published by the Thatchers Association of South Africa (TASA). It has since been brought to our attention that the
article contained a factual error, which we are addressing here.
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Clocktower project, using ThermocousTex™ Fibre insulation. Photo courtesy of TIPSASA.
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packaging of the insulation to determine the performance.• Products with the exact same R-value will provide exactly the same
insulating effect as each other, provided they are correctly installed. (The higher the R-value, the more effective the insulation.)
• Products must be installed in accordance with the manufacturer’s installation specifications.
• The information available on the product data sheet and/or label must include the R-value and Fire Performance Classification.
• Ensure that the insulation suits your particular application. • Ask if performance guarantees and/or test certificates are available.
• Material R-values: the thermal resistance values of bulk/mass type insulation are measured on the product alone according to international standards.
• System R-values: the thermal resistance value of reflective insulation is calculated based on international standards, and depend on the product being installed as specified in accordance with manufacturer’s specifications. This is known as a system R-value which incorporates air spaces.
• Composite R-values: the thermal resistance values of composite insulation products are measured by testing the composite product as a unit according to international standards.
DIRECTION OF HEAT FLOW EFFECT:
R-values can differ depending on the direction of heat flow through the product. The difference is generally marginal for bulk insulation, but can be pronounced for reflective insulation.
• Up R-values describe resistance to heat flow upwards (sometimes known as ‘winter’ R-values).
• Down R-values describe resistance to heat flow downwards (sometimes known as ‘summer’ R- values).
WHAT IS INTERVENTION OR ADDED R-VALUE?
The intervention or added R-value or added thermal resistance is the value of the insulating material alone. This is the term most used when buying thermal insulation.
The manufacturer should provide the R-value of the insulation on the packaging. Some products will have a higher R-value for a specified thickness. For example, a 70mm-thick extruded polystyrene board and 100mm-thick glass wool blanket may have the same apparent R-value.
Reflective insulation requires that air spaces are positioned correctly within the building system to be effective; reflective membranes cannot have an R-value without the air space or air spaces.
To compare the relative performance of bulk and reflective insulation membranes, the resistance of such membranes in combination with air space(s) must be calculated. Reputable manufacturers can supply this information. Note: The effectiveness of reflective insulation installed on horizontal or sloping surfaces may eventually be reduced due to dust build-up, which reduces reflectivity, thereby increasing absorption.
WHAT IS AN OVERALL R-VALUE?
The overall R-value is the total resistance of a building element or system combination. It takes into account resistance provided by construction materials used in a wall or ceiling, internal air spaces, thermal bridging, insulation materials, and air films adjacent to solid materials. Each of these components has its own inherent R-value, the sum of which provides the overall R-value.
WHAT IS THE DIFFERENCE BETWEEN R-VALUE AND TOTAL R-VALUE?
The R-value is the material thermal resistance, i.e. product only, whereas the Total R-value describes the total thermal resistance of the system to heat flow provided by a roof and ceiling assembly (inclusive of all materials and air films), a wall or a floor. These values are calculated from the resistance of each component, including the insulation. Total R-values are the best indicator of performance, as they show how insulation performs within the building envelope.
WHAT IS THERMAL BRIDGING?
Thermal bridging is the transfer of heat across building elements, which have less thermal resistance than the added insulation. This decreases the overall R-value. Wall frames and ceiling beams are examples of thermal bridges, having a lower R-value than the insulating material placed between them. Because of this, the overall R-value of a typical ceiling and/or wall is reduced.
R-VALUE CALCULATIONS
The R-value is calculated by using the formula R = l where: λ
•l is the thickness of the material in metres and•λ is the thermal conductivity in W/mK
The R-value is measured in metres squared Kelvin per watt (m².K/W). For example, the thermal resistance of 135mm of fibreglass insulation (with thermal conductivity 0.040 W/mK) is 3.37 m².K/W.
The R-value is therefore a relatively simple way to compare two insulating materials if you have the thermal conductivity for each material. It also allows you to see the impact of adding thicker layers of the same insulating material.
Image © Spunchem Africa (Pty) Ltd, courtesy of TIPSASA.
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WARNING: Ensure products added together have been tested as such to determine their fire performance! Simply adding products together could cause a fire hazard. Only use composites tested with a fire performance rating.
When it comes to the building envelope, the R-value of the individual insulation materials becomes just one of the performance parameters to be taken into consideration when determining the required insulation.
To determine the insulation thickness required:
R-value of fibreglass blanket (1m) – 1/0.040 = 25m².K/W
Thickness = R-value required R-value of material
3.37m².K/W 25m².K/W
0.1348m (approximately 135mm) SANS204 Deemed-to-satisfy
NOTES
Appropriate and correctly installed insulation remains the most effective way to improve the energy efficiency of a home or a building.
TIPSASA focuses on the thermal insulation industry, with particular emphasis on energy-efficient products and systems. As a non-profit company, it serves its members, professionals, as well as consumers. For helpful guidelines and more information, visit the TIPSASA website at: www.tipsasa.co.za.
Note: ‘A GUIDE TO THATCH CONSTRUCTION IN SOUTH AFRICA’ (© TASA - The Thatchers Association of South Africa) has been updated and can be downloaded from the TASA website at www.sa-thatchers.co.za.
SOURCE CREDIT AND ACKNOWLEDGEMENT
• ‘TiPS Guidebook on Thermal Insulation & Energy Saving’ © TIPSASA 2016.
• TIPSASA website; last accessed on 22 June 2016.
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JULY 201610
8773 - LAMBDABOARD (MAZE) A4 ADVERT PATHS.indd 1 2016/04/14 9:58 AM
At present, there are four main categories of material used for the manufacture of roof structures:
1. Structural, or heavy steel2. Cold rolled sections3. Timber4. Light steel
Note: Various other products such as PU and EPS panels, concrete, etc. are used in or as part of roofing structures, but for practical purposes they are not discussed in this article.
Structural Steel: Structural steel or heavy steel is classed as sections that are ‘hot’ rolled into the required shape and size. A wide variety of sections is available for selection by the engineer to optimize strength versus cost. This product is extensively used in the design of large, clear span structures like warehouses, factories, commercial structures, etc.
Cold Rolled: Cold rolled sections, available in a variety of shapes, sizes and thicknesses (e.g. lipped channels, Z purlin, etc.) are also used for mainly commercial buildings. Note that, although light steel trusses are essentially ‘cold rolled,’ the material thickness and grade is optimized to produce an even lighter structure.
Timber: Timber trusses are the most common roof structures for (mainly) the residential market. Timber has been the material most easily accessible, hence its popularity. There are many historical buildings that still have their original timber roof structures.
Light Steel: Light steel trusses – also referred to as Light Steel Framing (LSF), has been developed as a light structure, not only for the structural support of roof cladding, but also for complete load-bearing wall and floor systems.
Roofing Matters: What you should know about
light steel roof structures In this instalment of our roofing matters series that shares industry insight directly from experts across the roofing sector, Mulder Kruger talks about
light steel framing. Considering the numerous benefits it offers, it’s no wonder LSF has become such a favoured option.
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With LSF it is possible to construct complex, curved roofs and hip roofs with lofted ceilings. Old Apostolic Church in Ironside, Johannesburg – design and manufacture by Trumod (Pty) Ltd.
Article by: Mulder Kruger, Managing Director of Trumod (Pty) Ltd.
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Of the aforementioned, timber and structural steel are the best known. These materials have traditionally been used to manufacture structures – in the case of timber, for centuries. Structural steel has been used extensively since the late 1800s. All of the above materials have qualities that suit most applications very well, so why the need to developed light steel trusses or LSF?
LIGHT STEEL FRAMING (LSF)Although LSF is a relatively ‘new’ concept in the South African market, it has been in use in the USA since around 1960. LSF today offers a wide variety of applications that were serviced by timber or structural steel in the past. Due to cost and availability of materials, as well as versatility and ecological reasons, it became necessary to develop a cost-effective structural support system that can serve most of the more common needs.
Over the past two decades, LSF has been developed as an integrated manufacturing and design system where the design software creates a manufacturing instruction that is fed directly into a complementary roll former. Depending on the system in use, sections can be pre-punched, notched, swaged, cut to size, etc. – to the exact requirements for ease of assembly. The most common design and manufacturing technology available in South Africa has been developed in Australasia.
STANDARDS AND SASFAAs the LSF industry grew, it soon became evident that an industry standard was needed to ensure the structural integrity of the building or roof support system. In 2006, the Southern African Light Steel Frame Building Association (SASFA) was established as a subdivision of the Southern African Institute of Steel Construction (SAISC), the association that serves the ‘heavy steel’ industry.
In 2009 SASFA, in conjunction with the SABS, published SANS517 – the code for Light Steel Framing. Since its first publication, SANS517 has regularly been updated to ensure that it remains aligned with changes to the National Building Regulations and other technical developments. SASFA, an association managed by its members, offers professional training courses and accreditation in the interest of maintaining a regulated industry with significant growth potential.
USES OF LSF TRUSSESLSF trusses are used in most of the construction segments.
• Short span roofs LSF is being specified for a growing number of affordable and RDP (now referred to as Breaking New Ground) housing developments. The truss is very light in comparison to other types of trusses, making it ideal for manual handling on site and speedy erection. Steel trusses, in most instances, offer a cost advantage over other roofing structures.
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RDP housing in Johannesburg – roofs supplied by Trumod (Pty) Ltd.
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• Medium span roofs A large number of residential roof structures are supplied in LSF. It is a cost-effective structure that provides the basis for a perfectly ‘straight’ roof. The steel sections are sufficiently ridged to ensure a perfect base for roof cladding. Steel does not tend to warp with age, and a high-quality finish is maintained over the full lifespan of the building. Most LSF systems offer a timber sprocket as an option – specifically with exposed eaves. This feature enhances the aesthetics, especially on ‘Bali’ and ‘Tuscan’ style roof designs.
• Large span roof structures Clear spans in excess of 30m are possible with LSF trusses. Significant savings in erection time and associated costs are achieved with the erection of a roof support structure that can be partially assembled and then hoisted onto the supporting wall structure. Smaller trusses, around 16m spans, are normally lifted onto the walls manually – provided that the wall is not too high. In remote areas where cranes are not available, trusses in excess of 20m have been manually lifted onto the wall plates. LSF makes it possible to construct complex, curved roofs and hip roofs with lofted ceilings.
• Roof cover and other loads It is critical that all loads be identified and stipulated when a roof structure is designed. LSF roof structures can be designed for all of the common roof cladding types. Concrete tiles, steel sheeting, slate, etc. are all materials extensively used on LSF trusses. The placement of geysers, air conditioning units, acoustic ceilings, etc. must be pertinently indicated on layout drawings to ensure the loads are incorporated into the truss design.
TRUSS STEEL AND CORROSION PROTECTIONThe steel used in truss manufacturing is graded in terms of its yield strength. SANS517 addresses the most important design criteria. The steel is protected by a layer of corrosion-resistant material. This is normally a zinc or aluminium/zinc alloy. The coating is applied in the final stages of the steel manufacturing process. The exposure of the steel trusses to specific environmental conditions will determine what the required coating and coating thickness should be. Both of the larger steel producers (ArcelorMittal South Africa and Safal Steel (Pty) Ltd.) offer extensive warranties on the corrosion protection of their products.
ADVANTAGES OF LIGHT STEEL TRUSSES
1. Lightweight – can easily be handled.2. As the truss is of a stronger material, fewer trusses are
used for a roof structure.3. With fewer trusses, the installation of the roof structure
is completed quicker.4. It is normally assembled on site. No heavy machinery is
required.5. The site assembly allows for up to 100 (45m2) roofs to be
delivered on a single truck load.6. In the case of spans above 15m, trusses can be rolled on
site – yielding a significant reduction in transport costs.7. The trusses are accurate and straight.8. Steel does not burn, and is termite proof.9. In most cases, light steel trusses are the more cost-
effective option.
Apart from being easily assembled on site and offering considerable savings in both construction time and transportation costs, light steel trusses clearly offer a number of additional advantages over other roofing materials, all contributing towards the ever-increasing popularity of LSF.
FOR MORE INFORMATION:
Mulder Kruger, Managing Director - Trumod (Pty) Ltd.
(e) [email protected](w) www.trumod.co.za (t) (011) 363 1960
SASFASouthern African Light Steel Frame Building Association (e) [email protected](t) (011) 726-6111(w) www.sasfa.co.za
Project in Secunda – design and manufacture by Trumod (Pty) Ltd.
A timber sprocket f itted to a steel truss.
Ga-Rankuwa Campus – MiTek’s Ultra-Span® system. Supplied and installed by Hi-Tech Nail Plate.
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When you see a Chromadek® roof, you can be assured that it was designed in a paint system unique and specifically developed for African
climatic conditions. When it comes to making a sustainable roofing choice, there is no better way to finish off one’s home than with a Chromadek® roof.
KNOW WHAT YOU BUYWhy choose Chromadek®? Consider for a moment what a roof really does. It is not something that we think about often, but what really comes to mind is the protection that a roof provides from exposure to nature’s elements. And in doing so, the finishing touch is also added to a building.
Steel is style. Make the Chromadek® choice
– designed for Africa.Steel is generally regarded as a rigid material that offers strength and longevity. At first glance, roofing paint systems appear similar. But each has qualities and properties that set it apart – more so
with Chromadek®. ArcelorMittal South Africa tells us more.
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The impressive Mall of Africa – its Chromadek® White Lion roof comprises 600 tons of 0.58mm Z200 Chromadek®.
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YThe unique features of Chromadek® and Chromadek Ultim® reside in the paint coating that is oven-cured at elevated temperatures. Through a number of enhancements made to the Chromadek® and Chromadek Ultim® paint system, the following can be realized:
• Improved gloss and colour retention, ensuring longevity• A heat-reflective colour range that’s energy efficient: Aloe
Green, Buffalo Brown, Dark Dolphin and Charcoal Grey
Notably, it’s the only chrome-free, locally produced, hot-dipped organic coated roofing material available in South Africa.
Chromadek® and Chromadek Ultim® provide the assurance that colour-coated steel roofing and cladding produced by ArcelorMittal South Africa is covered by a warranty. The Chromadek® and Chromadek Ultim® paint systems are designed to provide resistance to fading, blistering and chalking, taking into account weather cycle fluctuations when exposed to natural elements such as heat, cold, hail and the sun’s UV-rays.
TRUSTED LOCAL BRAND: CELEBRATING 40 YEARS IN THE ROOFING INDUSTRY #PROUDLYAMSASTEELChromadek® was originally designed in 1976 to meet both form and function and has been refined, enhanced and tested through a 40-year, long-standing association with the built environment. Its unique features render Chromadek® the primary choice for roofing, as showcased in the impressive Mall of Africa project in Waterfall City, Midrand.
The 80,000m² curved, low-profile Chromadek® White Lion roof translates to 600 tons of 0.58mm Z200 Chromadek®. The material was supplied by ArcelorMittal South Africa and profiled by Clotan Steel into Craft-Lock® concealed fix roofing.
CHROMADEK® HAS ‘GOING GREEN’ CREDENTIALSWhen sustainability is taken seriously, an individual and organizations can play a part in transforming the future of the built environment – through the careful selection of materials that contribute towards a more sustainable environment. ‘Going green’ with Chromadek® does not just mean a greener colour. It starts with producing colour-coated steel in a more sustainable manner.
What differentiates Chromadek® as a colour-coated roofing solution is the elimination of the chrome content in the pre-treatment, primer, and the top- and backing coats that get applied. In turn, the need to treat chrome containing effluent, produced as a by-product when producing colour-coated steel, is eliminated. This lends itself to sustainable manufacturing through the controlled emission of chrome when producing the preferred colour-coated roofing solution.
In doing so, every coil of Chromadek® produced by ArcelorMittal South Africa for roofing and cladding is committed to making a sustainable difference.
MAINTENANCE: DO’S AND DON’TS FOR YOUR CHROMADEK® ROOFThe appearance and properties of Chromadek® can be safeguarded with proper handling, storage, installation and maintenance procedures. When handling Chromadek®, on-site care should be taken not to damage the surface finish. To keep a Chromadek® roof in pristine condition for as long as possible, the following do’s and don’ts are recommended:
• Clean or remove all metal deposits after constructing the roof: Loose fasteners, pop-rivet mandrills, metal drillings and other objects increase the risk of corrosion and should be removed.
• Prevent damage to paint coating: This damage could increase the risk of corrosion if considered to be severe. In areas where edge corrosion is evident (i.e. overlapping sheets and sheet ends) the corrosion will spread unless treated in good time. Clean the corroded edge thoroughly and repaint.
• Repainting of roofs: If the need to repaint a Chromadek® roof should arise, it can be done with an appropriate roof preparation method and a suitable paint system. Contact ArcelorMittal South Africa for advice and referral to an approved and reputable roofing refinisher(s).
• Walking on roofs: Avoid abrasive contact. Soft contact is recommended.
• Scheduled roof maintenance: It is recommended that roofs are cleaned and washed regularly.
• Roof location: Avoid adverse conditions.• Roof pitch: The minimum roof pitch permitted per
SANS10237 is two (2) degrees. Any roof pitch < 2 degrees is seen as a flat roof that could be more problematic in terms of corrosion because of static water.
• Fastening system: The correct type and class of fastener must be used for a specific area and regional application.
• Cladding systems should be designed so that there is no direct contact between incompatible metals or alloys. Where the use of incompatible materials is unavoidable, they should be separated by using an impervious non-conducting material.
• It is preferred that fastening systems be designed so that direct contact between two or more incompatible metallic coatings or alloys cannot occur.
• Staining and damage to Chromadek® surface: A roof system shall be designed to prevent drainage from one surface damaging or staining a lower surface. This aspect must be taken into account when solar panel installations are contemplated.
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• Special fixtures for fitting solar panels: Galvanized fixtures are recommended; however, see correct class of fastener and different metal compatibility for guidelines.
• Cutting of Chromadek® roof sheets: Avoid swarf and sparks from angle grinders. (Angle grinders must not be used. Suggested alternatives are circular saws and nibbler cutting.)
• Storage of material: Do not store material (roof sheets and/or coils) outside in the rain or in wet conditions. Always ensure that the material is stored under cover in an enclosed storage area. Ensure adequate ventilation during storage.
THERMAL EFFICIENCY OF CHROMADEK®
The consideration that every building is a combination of materials that can contribute to thermal efficiency is a promising avenue in innovative construction. Consider for a moment what makes a Chromadek® roof cooler even as it becomes hotter due to sun exposure:
The logic involved with heat reflectivity as an aspect of thermal efficiency starts with the explanation that dark colours absorb most of the visible light striking a surface, while lighter colours reflect most of that solar energy. This would suggest that colour is an indication of how much visible solar energy will be reflected. The amount of infrared energy that is reflected is often a function of the colour as well.
• Whilst drainage between the materials shown would be acceptable, direct material contact should be avoided. (Also see the correct class of fastener.)
• ‘Yes’ implies dissimilar metal drainage from top surface to lower surface – ‘Acceptable.’• ‘No’ implies ‘Not acceptable.’• ‘Acceptable’ and ‘Not acceptable’ imply similar service performances to those noted in the correct class of fastener.
ACCEPTABILITY OF DRAINAGE FROM ONE SURFACE TO A LOWER METAL OR ALLOY SURFACE
• C4+ = corrosivity category C4 (high), C5-1 (very high - industrial) or C5-M (very high - marine) according to ISO9223.• Other = corrosivity category C1 (very low), C2 (low) or C3 (medium) according to ISO9223.• ‘Yes = Acceptable’ and ‘No = Not acceptable’ imply the following: Yes = Acceptable because of bimetallic contact; either no additional
corrosion of the cladding system will take place or, at the worst, only very slight additional corrosion. It implies that the degree of corrosion would not significantly shorten the service life. Not acceptable: Moderate to severe corrosion of the cladding or accessories will occur – a condition which may result in significant reduction in the service life.
ACCEPTABILITY OF DIRECT CONTACT BETWEEN METALS OR ALLOYS WITH METALLIC ZINC COATING FOR CHROMADEK®
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THE DIFFERENCE BETWEEN HEAT REFLECTIVE AND NON-HEAT REFLECTIVE:
In conjunction with paint suppliers and by using advanced pigment technology, the technical DNA of Chromadek® has been reconfigured – resulting in its heat-reflective benefits. A demonstration of Chromadek®’s heat-reflective qualities, through Near Infra-Red Reflectivity, shows the thermal features and benefits of the advanced paint technology (pigment) used in Chromadek® and Chromadek Ultim®.
The demonstration draws attention to the circled, heat-reflective colour appearing lighter and therefore cooler, due to the heat-reflective pigment, while the non-heat-reflective colour remains darker and therefore hotter. (Note: NIR = Near Infrared)
In addition, a darker colour can be configured through the application of heat-reflective pigment to function as a lighter colour.
To put this into a practical context: Where annual cooling loads dominate, a highly reflective and highly emissive colour-coated steel roof is optimal for reducing energy consumption. Where annual heating loads dominate, an unpainted galvanized steel roof is more desirable because of its low infrared emittance.
By making the Chromadek® choice, the heat-reflective benefit is realized through:
• Lessened peak loads on energy consumption• Improved roof durability – less thermal cycling leads to
constant temperatures• Reduced air conditioning usage and costs• Reduced heating consumption and costs• Improved thermal comfort
Chromadek® is the preferred steel colour-coated roofing choice ideally suited to Africa's climatic conditions. For the ‘going green’ colour-coated steel roofing solution, consider Chromadek® or Chromadek Ultim®, the only local, organic coated material supplied as chrome-free.
FOR MORE INFORMATION:
ArcelorMittal South AfricaMelvin HickersProduct Manager for Galvanised and Colour Coated Products(t) 016 889 9111(e) [email protected](w) www.chromadek.com
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‘Working at height’ means work in any place where, if there were no precautions in place, a person could fall a distance liable to cause personal injury or even death. In 2015, the Institute for Work at Height (IWH) and its allies undertook the daunting task of developing a set of Work at Height Guidelines. The publication, now in its final stages of editing and illustration, is due to be launched on 10 October 2016.
When it came to developing the sections on ‘Roofing, Fragile Roofing and Skylights,’ experts in the roofing sector were involved in the working group and provided valuable input. The following extract is a ‘taster’ of what can be expected within the Guidelines.
ROOFING, FRAGILE ROOFING AND SKYLIGHTSAccording to Construction Regulation 2014 Regulation 10 (5), all contractors must ensure that when roof work is done, all openings or fragile covers are protected in a material that is strong enough to withstand the loads that it will be expected to carry, and that suitable and enough guard rails, barriers and toe boards or other means are installed or used to prevent the fall of any person, material or equipment [Reg. 10(5)(d, e, f)].
FRAGILE ROOFS AND WARNINGS
Signs must be affixed to the walls of buildings where access can be gained to fragile roofs. Safety signage for South Africa falls under SANS:1186 Part 1, “safety symbolic signs.” These signs should be made, when fitted externally, of sheet metal (Chromadek® is in common use) or other approved material that is at least 600mm by 450mm. Combination signs can be used to show multiple hazards. Great care must be taken to ensure that all persons are aware of the dangers of standing or treading on unprotected, fragile roofing.
Any person required to be on a roof covered with fragile roofing materials must use the walkways and crawl boards provided. Serious accidents and fatalities have occurred where workers have been misled by the appearance of roof coverings that appear more solid than they are. This is most likely to occur if the roof is discoloured with age, by weathering, or from being painted. This false sense of security may be reinforced by the fact that the roof takes a substantial distributed load, and therefore gives the impression that it will bear the weight of a worker. However, a concentrated load, such as that applied by the heel of a person walking or by a person stumbling and falling, coupled with the weight of the tools and equipment a worker may carry, must also be taken into account.
Fragile roofing materials fracture without warning, leaving jagged edges that can cause injury, even though wire mesh may be fitted. Experience has shown that breakages occur so rapidly that persons falling through fragile roofing materials have no opportunity to save themselves. If you are unsure of the carrying capacity of the roof or structure, then consider it as unsafe and dangerous.
Walking is not permitted on any roof unless crawl boards or grids are laid across the purlins and, where advisable, screwed into position. Where it is necessary to cross the roof, crawl boards must be used. Alternatively, planks should be laid across the full pitch of the roof and in the box gutters to provide lengthwise access. Suitable footwear must be worn when working on or near fragile roofs to avoid slipping.
Performing roof work safely Working at height remains one of the biggest causes of fatalities and major injuries. The roofing sector is at particular risk, with common incidents often
including falls from ladders and through fragile surfaces. The Institute for Work at Height has been collaborating on a set of Work at Height Guidelines to
increase awareness and help improve safety measures. Here are some specifics.
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The Guidelines will be available to everybody involved in ‘Working at Height’ and will be a valuable resource to keep at hand on any construction site, mine, or anywhere where people might have to access height.
The IWH is currently looking for more sponsors to have these Guidelines professionally illustrated and edited and is relying on the industry to assist. (Sponsoring companies can get their logos printed inside the Guidelines, which will be valuable for marketing purposes as the Guidelines will be distributed throughout South Africa and to all safety officers.) The Department of Labour’s Chief Inspector, Mr Tibor Szana, has indicated that the Department will endorse the Guidelines.
He has also indicated his willingness to be the keynote speaker at the launch of the Guidelines during the IWH Seminar scheduled for 10 October 2016.
FOR MORE INFORMATION:
Institute for Work at HeightDr Alti Kriel, CEO(t) 011 450 1804(e) [email protected] or [email protected](w) www.profbody.co.za or www.ifwh.co.za
FOR ALL YOUR SHEET METAL SOLUTIONSThe Leading Supplier of Galvanized Steel Products
Tel: (012) 372 0021/2
Heunis Steel is a level 7 B-BBEE contributor.
Fax: 086 693 1050
Cnr. Pinnacle Rock & Van der Hoff, Kirkney, Ext. 12 P.O Box 48278, Hercules 0030
Mobile: 082 828 0372
www.heunis.co.zaThe smart choice
“A building contract or construction contract is a binding agreement between the employer for the building project and the building contractor and subcontractors responsible for carrying out the construction work. JBCC has developed and authored a comprehensive suite of building contracts, meticulously drafted to comply with South African conditions and legislation, to ensure equitable distribution of contractual risk,” Putlitz explains.
JBCC is a non-profit company that represents building owners and developers, professional consultants, as well as general and specialist contractors who provide input for the compilation of JBCC documents that portray the consensus view of the constituent members. JBCC documents carry Construction Industry Development Board (CIDB) approval.
TRAINING SCHEDULEJBCC will stage two seminars on the Principal Building Agreement and Nominated/Selected Subcontract Agreement in Gauteng later this year, and each will earn attendees a Continuing Professional Development (CPD) point:
• 7 September 2016: Johannesburg Country Club in Auckland Park, and
• 25 October 2016: Bytes Conference Centre in Midrand.
The training will also be presented in:
• East London: 17 August 2016• Port Elizabeth: 18 August 2016• Cape Town: 19 October 2016• Durban: 9 November 2016
The interactive seminars will deal with the various agreements and application of the contracts and supporting forms as a contract administration tool. The target audience includes principal agents, project managers, architects, quantity surveyors, engineers, building contractors and subcontractors, employers, building owners, developers, and procurement officers. It is also aimed at project finance providers and legal advisors.
The programme will cover various facets of contracts, the role and appointment of subcontractors, the execution and completion of works, final accounts and payments, insurance, securities, suspension, termination, as well as dispute prevention and resolution.
“The training will provide delegates with a working knowledge of all JBCC agreements and forms, the competent administration of agreements, and knowledge on how to maximize productivity and minimize claims for delays as well as the cost of programme overruns,” Putlitz says.
For more information, contact the JBCC on (011) 482 3102 or visit www.jbcc.co.za.
Training to help building industry members protect their rights
The days of a simple handshake holding the various parties involved in a project accountable are long gone. In the building industry particularly,
starting any project—small or large—without a formal contract is a recipe for disaster, says Uwe Putlitz, CEO of the Joint Building Contracts
Committee (JBCC).
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Coverland officially entered the Polokwane market in September 2014 with a depot. The goal was to increase the operation’s service offering to its existing customer
base. “The move was very positive, and we saw potential to further grow our presence in the market,” says Willem Grové, Marketing Manager for Coverland. In 2015, when the opportunity arose to acquire the Technicrete roof tile plant, Coverland moved forward with a proposed transaction. In March 2016 that proposal was approved by the Competition Authority.
The effective date for Coverland to take over the plant was 1 June 2016. Grové indicates that substantial infrastructure investments will be made over the next few years to increase capacity at the facility, enhance product quality, and further expand the current product range. The existing depot will close, as all operations will now take place from the new Coverland plant.
CONCRETE AND CLAY TILE PROFILES The product offering will now include a total of six concrete tile profiles, as well as a range of imported clay tiles, to offer local consumers a much wider product choice.
The current Technicrete tile profiles will, however, also still be available to the market.
The Coverland product range also includes several roofing components such as the RadenShield radiant barriers, under-tile membranes, flashing, and dry ridging solutions.
Coverland is the only concrete roof tile manufacturer with an accredited CPD architect presentation, audited and approved by the South African Institute of Architects. Grové says Coverland will continue to lead the market through world-class products, service, and innovation.
Affirming how Coverland has continued to build on past successes, Grové describes the acquisition as a major step forward in the company’s growth strategy: “This is a very exciting and wonderful day in the history of Coverland. We are excited to be a bigger part of the local community and look forward to serving the greater Limpopo region with our new venture.”
For more information, contact Willem Grové on (011) 222 7406 or at [email protected].
Coverland acquires Technicrete Roof Tiles
in PolokwaneEstablished in 1949, Coverland has continually grown and evolved over
the past 67 years. Today the brand – part of the worldwide Braas Monier Building Group – is considered the largest concrete roof tile manufacturer in Southern Africa, with 8 production facilities and 4 depots serving a national
customer base. And now Coverland has added the Technicrete roof tile plant in Polokwane to its operational base.
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DO YOU HAVE A GREAT PROJECT OR STORY TO SHARE WITH SA ROOFING READERS? Send your article and high resolution images to [email protected] or call 0861 727 663 for more information.
YOUR PRINT MEDIA PARTNER OF CHOICE, SUPPORTING LOCAL TRADE. CONTACT US: [email protected] / 0861 727 663 / www.trademax.co.za
ENERGY-SAVING
PROTECTION
SEALING
TILINGEnquire at your local building retailer or contact us directly:
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EVERYTHING UNDER ONE ROOFWITH OVER 65 YEARS OF ROOFING EXCELLENCE, COVERLAND HAS A SOLUTION FOR YOU.
When you think roofi ng solutions – think Coverland.
Energy-Saving The RadenShield™ range of highly refl ective (97%) aluminium roofi ng radiant barriers not only provides the benefi ts of a refl ective insulation, but is also waterproof and reduces the amount of dust in the roof space. RadenShield™ is a recommended component for compliance with the SANS 204 Energy Effi ciency in Buildings Standard. ProtectionTired of unsightly cracked mortar along your roofs ridge and hip-line, not to mention the damage caused by leaks when it rains? Replace traditional mortar ridging with our advanced dry-fi x, waterproof ridge and hip-line system which is not only aesthetically pleasing, but is maintenance free.
SealingOur innovative EasyFlash roof sealing solution is durable, easy to install and able to hold its own against all weather conditions for up to 15 years without maintenance.
Tiling Our extensive concrete and clay tile range has been meticulously developed to be durable in any climate, while aesthetically pleasing.
If you want to enhance the beauty of your home while ensuring its visual appeal and structural longevity, choosing the best roofi ng solution is paramount.
Beyond providing roof tiles that deliver both style and safety, we off er a range of products and systems to enhance and maintain your roof:
Since our humble beginnings in 1949, we’ve assisted millions of South African homeowners with our vast technical expertise and wide range of high-quality products.
00803 - MONIER - ROOFING SOLUTIONS - TRADEMAX PRINT AD - RP.indd 1 2015/07/16 3:51 PM
The residential light commercial (RLC) segment of the heating, ventilation and air conditioning (HVAC) market is growing fast in South Africa. With the electricity crisis
easing off, RLC solutions are an increasingly attractive option – they are affordable, easy to install, and deliver surprisingly long-term cost and eco benefits. This segment is prompting more homeowners as well as small and medium businesses to invest.
We are seeing a 6% year-on-year growth in RLC sales locally, which is largely driven by South Africa’s rapidly expanding middle class, its growing number of small and medium enterprises, and a buoyant construction segment. Quite simply, RLC solutions are an ideal fit for homes, small or home offices and office buildings, with heating and cooling capacities designed to deal with bedroom to boardroom sized areas (9m2 to 1,000m2).
But there’s more to recommending them. Residential or light commercial air conditioning units are inexpensive to purchase, easy to maintain, fix, and move, and cost-efficient to operate. In addition, technology advances bring improved aesthetics: The units, which include a range of options from high-wall to stand-alone, wheel-in console units and modular mini rooftop units, are smaller, aesthetically designed, pleasing to the eye, and quieter. In addition, wireless and integrated controls have improved programmability.
Rather than relying on a temperature sensor alone, users can make use of a ‘follow me’ function, switching the unit off when they leave the room or controlling the unit from anywhere in their home or office with a remote. Many RLC units can also communicate with building management systems.
How green and efficient are they? These units will heat and cool environments. And what many homeowners don’t realize is that they are three times more cost-efficient than an electric heater. Modern design also means they use eco-friendly, zero ozone depleting gasses. With units starting as low as R3,000 a return on investment can be realized in a few years, with the lifespan of well maintained units now extending to 15 years.
Johnson Controls is a leader in the RLC segment globally and holds a significant portion of the RLC market share in South Africa, with brands such as York and, more recently, Hitachi. Johnson Controls’ recent acquisition of 60% of Hitachi’s RLC business is a direct reflection of our confidence in the growth of this segment. Technology advances have made these solutions more efficient, sophisticated and green, making them ideal for the cost- and eco-conscious consumer and business owner.
As home automation continues to grow, the RLC market will grow.
RLC heating up the HVAC market
A six percent annual growth rate in South Africa’s residential light commercial HVAC segment makes this a viable, eco-friendly home and
office option, says Neil Cameron of Johnson Controls.
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creating the advantage
The low mass per m2 (between 2-10kg) of this roofi ng system ensures both savings on the supporting structure as well as on transportation and erection costs whilst also being vermin proof and non-combustible.Large sections of the roof can simply be pre-assembled on the ground and hoisted into position on the walls – making this one of the most viable systems with a large range of applications up to a clear span of 40m.
Supported through a substantial network of licensed truss suppliers, Ultra-Span is equally ideal for all local and export applications where it can be pre-assembled or site assembled.
The non-combustible solution.
LIGHT GAUGE STEEL
MiTek Park,754 16th Road, Randjespark, Ext. 34, Halfway House,1685. Midrand (Head Offi ce) Tel: + 27(0) 11 237 8700Cape Town Tel: 021 905 0244 • Durban Tel: 031 700 6332 • Port Elizabeth Tel: 041 581 7525email: [email protected] • www.mii.com/southafrica
*MiTek Industries South Africa (Pty)Ltd, a division of the worldwide MiTek Group.
The Gauteng Department of Education’s (GDE) brief called for the installation of the roof structure over the nutrition hall at the
Ga-Rankuwa campus of the Tshwane University of Technology. The governing criteria within the brief were clear: cost, program and competency for performance. In addition, the principal contractor, Enza Construction, preferred dealing with only one subcontractor.
Hi-Tech Nail Plate priced the project in competition with other vendors but was ultimately selected and appointed as a preferred supplier by Enza Construction. Hi-Tech Nail Plate assumed responsibility for numerous timber roof structures as well as the nutrition hall, which was originally designed and specified as conventional hot rolled structural steel.
After carefully reviewing the costs and time constraints of the project, Hi-Tech Nail Plate suggested that Ultra-Span® be considered as a better option. Another factor taken into account was the simplification of the supporting structure – no ring beams and no columns were required, based on truss spacing, and the building would be constructed from load-bearing brickwork only.
The rest of the team agreed, and ultimately the roof structure was changed from conventional steel to the Ultra-Span® light gauge steel truss system. MiTek’s expertise was called on for the design of the trusses in view of the large span nature of the roof: 30m clear span, plus 1,0m cantilever on both eaves. (Roof covering is sheeting.)
Hi-Tech Nail Plate manufactured the trusses in their factory and erected the roof structure on site. The trusses were made in two halves, which allowed for ease of transport to the location. The truss halves were then spliced together on site to construct the full span truss, ready for erection. (The two truss components were joined together with box frames.) Incredibly, the entire roof was lifted with a crane in just one day. The whole roof was lifted onto the supporting brickwork in the morning, and the purlins and bracing were fitted thereafter.
A 30-metre clear span? No problem.
When it came to installing this roof structure, the 30m clear span, rather than posing a problem, became a challenge easily handled by
Hi-Tech Nail Plate with the use of MiTek’s Ultra-Span®.
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• Design, Manufacture & Installation of Roof Structures• Pre-Fabricated (Gangnail) Roof Structures• Mitek Ultra-Span Lightweight Steel Roof Structures• Exposed Feature Roof Structures• Hybrid Roofing Solutions • Specialised Professional Engineering Services•• Registered Structural Engineers• Specialised Engineered Economic Roofing Solutions • Supply & Installation of Roof Insulation • Supply & Installation of all Roof Coverings (Sheeting, Tiles, Slate & Specialist Coverings)
Hi-Tech Nail Plate
Tel (011) 392 6473Fax (011) 392 6473
Cell (083) 441 3288Web site www.htnp.co.za
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SOUTCOMEThe project team experienced no material challenges and the site ran smoothly. Both the GDE and Enza Construction were extremely satisfied with the workmanship and overall result, and were specifically impressed with the speed at which the roof was erected.
In fact, the GDE commissioned another identical installation, and subsequently the Moses Kotane Primary School project was successfully completed in Soweto.
FOR MORE INFORMATION: MiTek South Africa(t) +27 011 237 8700(e) [email protected] (w) www.mitek.co.za
Hi-Tech Nail Plate(t) +27 011 392 6473(e) [email protected] (w) www.htnp.co.za
PROJECT TEAMCLIENT: Gauteng Department of Education (GDE)PRINCIPAL CONTRACTOR: Enza ConstructionSUBCONTRACTOR – ROOF TRUSS MANUFACTURE AND ERECTION: Hi-Tech Nail PlateROOF TRUSS DESIGN: MiTek Industries
No matter how effective an initial lighting plan is, a regular maintenance plan is required to ensure that the same quality and quantity of light is delivered year
after year. However, none of this should matter to companies. In fact, reputable lighting solution providers should back their own products by accepting the risk of maintenance themselves, says Tristão Abro, Director of Relight Energy.
LIGHTING SYSTEMS ARE IMPACTED BY TWO MAJOR FACTORS:
1. Lumen depreciation – the rate at which the light being emitted from the lamp fades over time, and
2. Lamp failure rate – the rate at which the actual lamp will fail or burn out.
These factors, according to Abro, are what businesses often fail to see and take into account. “We refer to this as the ‘doubling effect.’ Consider the combined effect of a 50% lamp failure rate and 50% lumen depreciation, which is a common specification of lamps. Businesses could, in theory, be operating at 25% output of the original lighting specification after a period of time.”
LUX LEVELSMany business owners don’t realize that their light is failing, because the process of the 'doubling effect' happens slowly, over a period of time. Many industrial, commercial and retail operations may have upgraded older light fittings to fluorescent fixtures. Unfortunately, most good quality fluorescent fixtures are not suited to local industrial environments – having real lifespans of fewer than 20,000 hours – and therefore the 'doubling effect' affects productivity that much sooner. Taken a step further, if inferior LED solutions are installed, companies will experience lamp burnout and lamp lumen depreciation even quicker.
“We deal with the combined effect of the above factors by guaranteeing lux levels (quantity of light) over extended periods. Depending on the business requirements, this could be five, seven or ten years. Maintenance is completely removed from the equation for our clients, as we accept the maintenance risk. That’s because we're completely confident in the quality of the products that we supply,” concludes Abro.
For more information, visit www.relightenergy.co.za.
Who should maintain the lights?
Should companies be paying for their own lighting maintenance plans? Or should it be a given that the supplier maintains the lux levels? Relight
Energy’s Director, Tristão Abro, addresses the issue.
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A COMPLETE DESIGN AND BUILD SYSTEM
MANUFACTURING SYSTEMS FRAMECAD®’s technologically advanced manufacturing
solutions produce cost-effective, lightweight steel framing
components quickly and efficiently, either at the client’s own
factory or through the FRAMECAD® global network. These
include framing systems, roofing, flooring, walls and trusses.
Intelligent FRAMECAD® software, incorporating computer aided engineering, makes the process ofengineering, designing and detailing each project, fast, simple and highly accurate. This ensures every building is not only cost-effective, but also durable and fit for purpose.
The FRAMECAD® range of rollforming equipment forinline framing is highly innovative and versatile and has been designed to offer increased production speed, greater flexibility and increased reliability.
It’s best suited for Residential and Light Commercial projects up to 8 storeys with a full range of punching functions that allows an entire building (walls, truss and floors) to be constructed using a single steel profile.
Our machines specializes in the manufacture of light steel trusses, light steel wall panels & floor joists. The flexibility in the design, the speed of assembly and installation gives us a cutting edge methodology against the conventional and timber construction.
*External cladding, wall lining (fibre cement, MGO , weather boards)*Gypsum board*Floor lining (high density fibre cement & ply wood)*Ceiling lining (gypsum, fibre cement tiles, mineral fibre tiles)
Fastest and Most Accurate Manufacturing Systems on The Market.
China based FRAMECAD® Sales Manager, Chris Yang, +86 186 0309 1011
www.framecad.comFor more information and inquiry, contact our SA based FRAMECAD Sales Manager, Sello Tlhotlhalemajoe, +27 82 6993740 or +27 110645760
Benefits of Steel Framing
Strong – highest strength to weight ratio of any building material, meets very tough performance standards
Inorganic – will not rot, warp, split, crack, creep, support mold growth, termites and insects free
Dimensionally Stable – does not expand or contract with moisture content
Consistent Material Quality – no regional variance in composition performance. International standards,
global requirements.
Non Combustible – does not burn and will not contribute fuel to the spread of a fire.
Earthquake Resistance - superior seismic performance due to steel’s ductility
FRAMECAD® also supplies complimentary building materials
A COMPLETE DESIGN AND BUILD SYSTEM
MANUFACTURING SYSTEMS FRAMECAD®’s technologically advanced manufacturing
solutions produce cost-effective, lightweight steel framing
components quickly and efficiently, either at the client’s own
factory or through the FRAMECAD® global network. These
include framing systems, roofing, flooring, walls and trusses.
Intelligent FRAMECAD® software, incorporating computer aided engineering, makes the process ofengineering, designing and detailing each project, fast, simple and highly accurate. This ensures every building is not only cost-effective, but also durable and fit for purpose.
The FRAMECAD® range of rollforming equipment forinline framing is highly innovative and versatile and has been designed to offer increased production speed, greater flexibility and increased reliability.
It’s best suited for Residential and Light Commercial projects up to 8 storeys with a full range of punching functions that allows an entire building (walls, truss and floors) to be constructed using a single steel profile.
Our machines specializes in the manufacture of light steel trusses, light steel wall panels & floor joists. The flexibility in the design, the speed of assembly and installation gives us a cutting edge methodology against the conventional and timber construction.
*External cladding, wall lining (fibre cement, MGO , weather boards)*Gypsum board*Floor lining (high density fibre cement & ply wood)*Ceiling lining (gypsum, fibre cement tiles, mineral fibre tiles)
Fastest and Most Accurate Manufacturing Systems on The Market.
China based FRAMECAD® Sales Manager, Chris Yang, +86 186 0309 1011
www.framecad.comFor more information and inquiry, contact our SA based FRAMECAD Sales Manager, Sello Tlhotlhalemajoe, +27 82 6993740 or +27 110645760
Benefits of Steel Framing
Strong – highest strength to weight ratio of any building material, meets very tough performance standards
Inorganic – will not rot, warp, split, crack, creep, support mold growth, termites and insects free
Dimensionally Stable – does not expand or contract with moisture content
Consistent Material Quality – no regional variance in composition performance. International standards,
global requirements.
Non Combustible – does not burn and will not contribute fuel to the spread of a fire.
Earthquake Resistance - superior seismic performance due to steel’s ductility
FRAMECAD® also supplies complimentary building materials
QUOTE REF. NO: FCSAROOF
This was the message delivered by the Minister in the Presidency for Planning, Monitoring and Evaluation, Jeff Radebe, at a recent post-cabinet briefing held in
Pretoria.
The CSD is a source of all supplier information for all spheres of government. “The purpose of centralizing government’s supplier database is to reduce duplication of effort and cost for both supplier and government, while enabling electronic procurement processes,” the Minister said.
“In better enabling small businesses, National Treasury and the Black Business Council established a centre which will assist small businesses with registration on the CSD, e-tender queries, and other client services of National Treasury,” Minister Radebe concluded.
For more information, visit https://secure.csd.gov.za/.
Source: SAnews.gov.za
CSD to benefit small businessesCurrent and prospective service providers are encouraged to register on the Central Supplier Database (CSD), which is aimed at enabling especially small businesses to exploit economic
opportunities and contribute to the development of South Africa’s economy.
The first working meeting of the International Federation of Consulting Engineers’ (FIDIC) Quality Management Task Force was recently hosted by Aurecon. The goal of
the task force is to create a new guide that will give practical and useful information on how ISO9001 clauses can be applied within engineering and construction companies.
Sonja de Klerk, Head of Quality, Environment and Sustainability at Aurecon, says that engineering consultancies and contractors are often required to have formalized quality management systems and be ISO9001 certified to compete in today’s marketplace. The new guide, which will be titled Guide to the Interpretation and Application of ISO9001:2015 in the Consulting Engineering Industry when released, will demystify many complex aspects of the Standard.
“This guide will be helpful to any quality management practitioner in the consulting engineering industry. The clauses in ISO9001 can seem abstract, but the new guide will help clarify them in the context of our industry through the use of explanations and examples,” de Klerk says.
FIDIC is the global voice of consulting engineers, and member firms are encouraged to commit to implementing quality management systems that involve all levels of management and every employee within their companies. FIDIC first released an implementation guide in 1997, and further revisions were released as the ISO9001 Standard continued to evolve. In 2015 a fundamental review of the Standard was released, namely ISO9001:2015. It was the catalyst for FIDIC and The European Federation of Engineering Consultancy Associations (EFCA) Task Force on Quality Management to come together and create a guide that will help quality management professionals interpret the application of the Standard.
De Klerk explains: “Companies are not required to instantaneously switch over to the new ISO Standard. Instead, a transition period of 3 years from date of publication of the new Standard has been agreed for accredited certification. This period will end on 15 September 2018, which means that all certified companies need to be fully compliant with ISO9001:2015 by that date. The new guide helps them on this journey.”
The Task Force on Quality Management is chaired by Walter Painsi from Austria and includes, as members, thought leaders from Switzerland, New Zealand, Australia and South Africa (represented by Sonja de Klerk). Painsi says the new ISO9001 Standard introduces some far-reaching changes to previous revisions, such as a prominence of risk-based thinking and engagement with interested parties.
“These concepts are highly relevant for the consulting engineering industry and the guide will provide much-needed guidance, not only on how to comply with the Standard, but on how to do so in a value-adding manner. Further meetings will be held in the future, with the goal of publishing the guide in the next few months,” Painsi concludes.
FOR MORE INFORMATION:
Sonja de KlerkHead of Quality, Environment and Sustainability – Aurecon(e) [email protected]
Enrico Vink Managing Director – International Federation of Consulting Engineers (FIDIC)(e) [email protected]
Navigating ISO9001:2015A new guide is being created to promote the interpretation and
application of ISO9001:2015.
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Innovative. Sustainable. Complete.
Tel: 011 316 2121Fax: 011 316 4138
Web: www.marleybuildingsystems.co.za
Innovation is at the heart of our priorities. Our extensive product range blends sustainability and architectural creativity to inspire better ways ofbuilding and living.
Our Fibre Cement Facades, Fibre Cement & Gypsum building boards and Roofing solutions put us in a unique position to contribute to complete solutions for building projects
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To this end, Marley Roofing – one of the four business lines of Marley Building Systems – has added to its selection a fine range of clay tiles with an international pedigree: the Canudo, Portuguese and (Advance
Premium) Marseille tiles.
The range’s diverse and sophisticated shades, warm tones, elegant contours and classy finishes will suit a variety of architectural styles and customer preferences. A comprehensive selection of complementary fittings and accessories completes the offering.
Visitors to the Interbuild Africa and Cape Construction exhibitions in August will be able to view Marley Roofing’s extensive offering of roof tiles and fibre cement slates.
Marley Building Systems has been exceptionally active on the exhibition circuit this year to promote its four brand offerings, namely:
• Siniat – Plasterboard and dry wall systems• Kalsi – Fibre cement materials• Equitone – High-density fibre cement through-coloured façade materials• Marley Roofing – Concrete and clay tiles as well as fibre cement slates
Marley Roofing showcases its pedigree products
Roofs are a key architectural feature, equally deserving of sustained technical innovation and aesthetic development to ensure harmony with evolving
contemporary tastes and sensibilities.
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According to Regional Sales Manager, Stephen Rault, the industry will be seeing a lot more of Marley Building Systems going forward. The most recent campaign involved countrywide exhibitions for Elite Star Africa members in Johannesburg, Durban and Cape Town. EST is one of the big names in the hardware, building and DIY industry with more than 300 members across South Africa. Rault said that while Marley Building Systems is virtually in every main city centre in South Africa, with six factories and 14 sales branches, retailers remain a critical component of its business. “We understand that it is onerous for retailers to carry all of our ranges, especially the technical products, so we see our sales branches as a service support to retailers when customers are looking for a product which they may not have in stock.”
Rault said the feedback that Marley Building Systems has received from its activities to date has been positive and very encouraging. “We want to fulfil the market’s need for a solutions-driven partner, and our unmatched range of products allows us to do this.”
For more information, contact Ayanda Ndlovu, Communications and Product Manager, at [email protected] or (011) 316 2121.
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ECONOMIC AND LIFESPAN BENEFITS OF STEELOver the last few years, parts of South Africa have seen unusual and destructive weather patterns such as extraordinary hail storms, leading to an increased awareness of the environment and its impact on buildings. The growth in the application of metal roofing can be attributed, in part, to this increased environmental concern, and the construction industry has also driven this process by placing greater emphasis on the environment and sustainable building practices. Steel roofing is by far the most environmentally-friendly option available.
Available in a variety of colours, the Versatile® profile can be incorporated into virtually any architectural design. This high-quality product also saves on the overall cost of building, as, because metal roofing is lighter, it does not require the structural support that traditional roofing systems require.
Versatile® - metal roofing true to its name
A common misconception with roofing is that choice is restricted to concrete/slate roof tiles or metal roofing with only a limited number of
profiles. The Versatile® profile debunks that fallacy, says Safintra, as this unique profile combines the cost savings as well as the structural and
lightweight properties of steel with the attractive aesthetic of a roof tile.
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Versatile® is sold as a complete system, with its own distinctive roll top ridges – designed to complement the profile. The roll top ridge is notched, to allow it to be bent into the tile as a closure.
The Versatile® profile requires minimal time and effort – in both installation and maintenance. Roll-formed using superior aluminium-zinc (AZ) material ensures a quality, low-maintenance product with a service life to match.
The Versatile® has enjoyed excellent reviews. And because it is steel roofing, it is also perfectly suited to the harvesting of rainwater, further reaffirming Safintra’s commitment to providing environmentally-friendly solutions to the building industry with innovative products.
MAXIMIZE THE SERVICE LIFE OF ROOFSThe Versatile® profile with superior AZ technology will last up to four times longer than traditional materials, and therefore Safintra recommends Fixtite® fasteners or a Safintra-approved Class 4 fastener to extend the service life of the roof.
For more information, visit www.safintra.co.za.
CALL 0861 727 663 TO BOOK YOUR SPACE IN
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8885 - IBA 2016 VIS TRADEMAX A4 ADVERT - paths.indd 1 2016/04/26 12:07 PM
Following a record number of 47 entries and an intensive, in-loco inspection process, 22 projects have been selected by the adjudication panel as final qualifying
entries for the prestigious award.
“The award assessed by the project responds to the criteria of harmonization, people upliftment, evolutionary paradigm and place-making performance,” comments Richard Stretton, member of the adjudication team. “Successful projects not only respond to these criteria, but also use the criteria as design-generating tools. Unsuccessful projects make tokenistic gestures to sustainability without demonstrating the understanding that the criteria of sustainability are as important as user function and aesthetic beauty. The building must have a clear function and be in use.”
The six-person adjudicating team is made up of: Kevin Bingham (Vice President of SAIA), Daniel Irurah (sustainable architecture academic), Llewellyn van Wyk (Principal Researcher at Building Science and Technology), Sebasti Badenhorst (AfriSam
representative) and Eric Noir (Africa Region Director of the International Union of Architects’ work programme, Architecture for a Sustainable Future).
“The qualifying entries really show a track record of being designed for the humans and communities who will inhabit and use them,” added AfriSam’s Sebasti Badenhorst. “It has also been particularly gratifying to observe the drive to target net-zero energy and water use and to limit sanitation outflow and emissions, and to protect biodiversity.”
The AfriSam-SAIA Award for Sustainable Architecture + Innovation is South Africa’s leading award dedicated to acknowledging best practice and innovation in sustainable architecture. Its aim is to promote and increase learning and understanding of sustainability within the context of the human built environment.
The final awards event will take place in October this year.
For more information, visit www.sustainabledesign.co.za.
FINALISTS in 2015/2016 AfriSam-SAIA Award for Sustainable Architecture + Innovation
First introduced in 2009, the biannual AfriSam-SAIA Award for Sustainable Architecture + Innovation recognizes outstanding achievement in
sustainable architecture, in addition to creating public awareness and debate on architectural issues.
Gorgeous Green House.
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CATEGORY A: SUSTAINABLE ARCHITECTURE
1. AFRICAN SCHOOL FOR EXCELLENCE - Local Studio2. BARN HOUSE - Strey Architects3. BMW HEAD OFFICE BUILDING - Boogertman+Partners
Architects4. DEA BUILDING - Boogertman+Partners Architects5. GORGEOUS GREEN HOUSE - Sagnelli Associate Architects6. GOVERNMENT HOUSE PIETERMARITZBURG - Robert JW
Brusse Architect7. ICAT ECO FACTORY - Earthworld Architects8. LIV VILLAGE - Designworkshop9. MABONENG PRECINCT - Daffonchio & Associate Architects
10. NEW BUSINESS SCHOOL FOR NMMU - The Workplace Architects with GAPP
11. OUDEBOSCH CAMP KOGELBERG - Architecture Coop12. OUTREACH FOUNDATION COMMUNITY CENTRE - Local
Studio13. WITS RURAL FACILITY - Kate Otten Architects14. WWF SA BRAAMFONTEIN - Alive Architecture
CATEGORY B: RESEARCH IN SUSTAINABILITY15. DESIGNING HOPE FOR PATHWAYS TO REGENERATIVE
SUSTAINABILITY - Dominique Hes & Chrisna Du Plessis
CATEGORY C: SUSTAINABLE PRODUCT/TECHNOLOGY16. OTTO COTTAGE - Paul Marais17. POD IDLADLA - Collaborate18. SOLAR TURTLE - Ugesi Gold19. VODAFONE SITE SOLUTION INNOVATION CENTRE -
Grosskopff Lombard Huyberechts & Associates
CATEGORY D: SUSTAINABLE SOCIAL PROGRAMME20. BRIDGING MZAMBA - buildCollectiveNPO with Carinthia
University of Applied Science 21. MALAWI SCHOOL - Architecture for a Change22. ULTIMUM REFUGIUM - Ntsika ArchitectsNew Business School.
Liv Village.
Outreach Foundation Community Centre.
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AFRICAN SCHOOL FOR EXCELLENCE: LOCAL STUDIO The design of the school borrows from industrial warehouse typologies in the East Rand. With the notion of ‘school as megastructure’ in mind, a series of six U-shaped classroom clusters are arranged around a vast central hall space. Each of these clusters (termed ‘learning communities’) is designed around the school’s education model, which rotates learners between spaces for instructional learning, peer-based learning and self-study throughout a school day. The hall space is imagined as a large courtyard, with a lightweight sculptural roof, floating above the classroom buildings. An urban intervention for the entrance portico was designed to welcome the community and scholars into the building. The scale of the building allows the school to be seen from afar and acts as a visually prominent structure in the community.
BMW HEAD OFFICE BUILDING: BOOGERTMAN+PARTNERS ARCHITECTS (GAUTENG)
The design of the building conceptually focuses on the regeneration of an iconic structure – maintaining the spirit of the original building while infusing the envelope with the life of a new entity that is simple in aesthetic intent and energy efficiency. Minimum intervention to the outer façade of this circular building retains its elegant, modern and dark brick appeal. The only addition is the lightweight mechanical horizontal louvres, which are strategically installed to reduce the glare of the direct western sun and optimize the internal building envelope with the notion of transparency. Green principles were imperative to address the building’s thermal comfort and energy efficiency and to achieve a holistic solution to the working environment. The building’s lighting, ventilation and hot water generation systems were completely reinvented with a satellite Energy Centre (with more suitable equipment for the generation of energy and backup of the three systems) as well as the installation of a photovoltaic system. The result of these energy-efficient technologies saw the building obtain a 5 Green Star rating.
African School for Excellence.
African School for Excellence.
BMW Head Office Building.
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DEA BUILDING: BOOGERTMAN+PARTNERS ARCHITECTS (GAUTENG)The Department of Environmental Affairs (DEA) building, in the City of Tshwane, is based on the importance of a structure that reflects the culture of the Department – the way it works, its function, and what it stands for in terms of purpose, beliefs and service to the country and the community. The project achieved a 6 Star Green Office v1 design rating. The design responds to an environmentally sensitive and sustainable architecture that equally is respected by international dignitaries, visitors and tourists, but is, above all, a home for the DEA to be proud of and to remain memorable, beautiful and inspiring for generations to come. The building hosts an array of sustainable technologies – from rainwater and greywater harvesting and recycling to double-glazed windows, evaporative cooling methods for air conditioning, photovoltaic cells and solar hot water heating on the rooftop, an east/west orientation, and a highly developed building envelope insulation design.
GORGEOUS GREEN HOUSE: SAGNELLI ASSOCIATE ARCHITECTS (KZN)A client-driven green research project, the Gorgeous Green House encapsulates all green and eco gadgetry the market has to offer. This project shows just how strong the client's voice was with decision making on a sustainable level. Special thought, consideration and research by the client allowed the design of the house to incorporate a range of sustainable features. These include rooftop gardens, green walls, evaporative cooling ponds, water harvesting, storage and recycling, and solar energy – to name a few. The house also features different sustainable and environmentally friendly materials like bamboo, recycled carpets and kitchen countertops, and it boasts an incredibly integrated ecosystem of beehives, a veggie garden and a natural swimming pool with fish – all which attract more than 40 species of birds, insects and wildlife to the property. Gorgeous Green House is the poster child for sustainable green living.
LIV VILLAGE: DESIGNWORKSHOP - SA
There are reportedly more than 5 million orphaned and vulnerable children in South Africa, mainly due to HIV/AIDS and poverty, and another 12,000 children get added to the total every month. LIV Village exists to raise the next generation of leaders in South Africa. The village places orphaned and vulnerable children into a family environment with a trained foster mother to provide them with love as well as ensuring their education and physical needs are met. Liv Village accommodates a community clinic, open-air hall, educational facilities, as well as accommodation for nurturing foster mothers who are the backbone of the community. Located within the surrounding local community, Liv Village provides production and training facilities that extend the integration into the local economic and social networks to provide skills and employment which aim to provide increasingly independent economic sustainability for the village.
Gorgeous Green House.
DEA Building.
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NEW BUSINESS SCHOOL FOR NMMU: THE WORKPLACE ARCHITECTS WITH GAPP
The Nelson Mandela Metropolitan University (NMMU) Business School, with its ‘severity’ exterior, uses a minimalist and simple brick while the interior and courtyard are spatially more diverse, featuring a variety of volumes that include a multitude of light sources. The finishing of the building also reflects this design intention: The exterior is of a single face brick with flush jointed, tinted mortar to match the brick, whereas the interior is more varied with a range of lighter neutral colours and textures.
OUTREACH FOUNDATION COMMUNITY CENTRE: LOCAL STUDIO (GAUTENG)
The Outreach Foundation Community Centre is one of the first new inner-city social infrastructure projects to be built in Hillbrow since the 1970s.
The building site is situated on the rooftop of the unfinished community hall of what was the 1970s German Consulate. The building houses three primary functions: a computer centre, dance studio, and offices and meeting areas. These functions are collected within an angular volume draped over the two levels of the site. The simple form of the community centre is entirely governed by the programmes that are housed. The choice of white Chromadek® corrugated steel and clear corrugated polycarbonate as cladding materials abstract the building’s image and clearly establish it as a new addition to this part of the city. The building is elevated almost two storeys above the street level, which creates a strategy around public place-making.
VODAFONE SITE SOLUTION INNOVATION CENTRE: GROSSKOPFF LOMBARD HUYBERECHTS & ASSOCIATES
The Vodafone SSIC is the first 6 Star, Green Star accredited building in South Africa. The centre is a sustainable living building, envisaged as a functioning showcase for innovative techniques and design for construction, electrical, mechanical, and wet services. The aesthetic principle was to create a harmonious and seamless integration between the physical building and the surrounding landscape. The building's primary use of material is glass, which is an architectural expression responsive to transparency, allowing one to see in, and vice-versa. The design has a narrow floor plate surrounding a central open-air courtyard with a rainwater pond and wetland, and an innovative, glazed, double-skinned external façade that allows for excellent levels of interior daylight as well as a thermal break for the sometimes harsh regional climate. The Vodafone SSIC is a live model for passive as well as high-tech solutions available to create buildings that use low embodied energy and labour-intensive construction methods, as well as reducing the carbon footprint of the building during its operational life.
New Business School.
Vodafone SSIC.
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Cristian Cottino, Sales and Marketing Director of Vitrex, says the company developed the cladding system for this challenging and complex design in close
collaboration with Quality Architectural Systems LLC (QAS) (Dubai) and QFS B.V. of The Netherlands. “The design is very unusual in that the position of the leading edge of the fins – located on the four corners of the tower – changes progressively over the height of the structure, coming in towards the corner of the structure from ground level to level 18, and then going out again thereafter along the edge of the petal up to its tip on level 23.”
“However, at the same time, the trailing edge of the fins remains at the same position along a true vertical line, over all the levels. The face of the cladding across the fins at any given level therefore changes from true vertical at the trailing edge to sloped at the leading edge, thus creating the ‘twist,’ with the angle of the face as measured from the true vertical changing from level to level,” Cottino explains.
The Vitraclad vitreous enamel panels and the cladding system had to be designed to create the twist effect across the width, and over the height, of the fins. “A mathematical analysis of the architect’s design allowed for the degree of twist to be determined over the full height of the fins. Based on this analysis, Vitrex was able to approximate the architect’s design by gradually twisting individual, rectangular, flat panels at each position by a given amount. The maximum twist at any given point was 13mm.”
“The use of flat, rectangular panels also enabled Vitrex to substantially reduce the number of panel types required. These panels were twisted when secured to purpose-made, adjustable brackets during installation on site," Cottino says.
'Twisting' vitreous enamel cladding at Oman airport Ekurhuleni-based Vitrex designed and supplied unique 'twisted' vitreous
enamel for the air traffic control tower at Muscat International Airport in the Sultanate of Oman. Vitraclad heavy gauge panels, exported by Vitrex to cover around 4,000m2 of the fins of the tower, were installed by the
project's main contractor, Carillion Alawi LLC.
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G“To connect the panels to the special brackets, each panel was factory-fitted with a pair of full height aluminium frame profiles produced in the specified aluminium alloy and with a natural anodized aluminium finish, here in South Africa. The frame profiles were chemically bonded to the rear of the cladding panels using a pre-tested sequence of bonding agents. The application of aluminium elements directly to panels with a vitreous enamel finish was a first for Vitrex.”
To reduce the overall panel weight, the panels were constructed with an aluminium honeycomb core, resulting in a total mass saving of 10kg/m2. The aluminium honeycomb core was bonded to the rear face of the panels using a two-part polyurethane adhesive – again a first for Vitrex. A dedicated lamination line, which includes electronic dispensing equipment for the adhesive, was commissioned by Vitrex for this contract.
Cottino says the colour of the vitreous enamel coating had to be specifically matched for the project, which added another facet to the execution of the contract. “The colour RGL Tower Grey (VIT-411) was developed in-house by Vitrex and then tested in our laboratory to determine its functional characteristics and ensure that the coating was appropriate for the intended application. To ensure an objective assessment of colour and colour consistency in production, strict quality control procedures form part of Vitrex's ISO9001-certified Quality Management System. The colour of each individual panel produced was measured electronically, using a colourimeter combined with compatible software, and compared to that of the approved colour master plate.”
“In addition to colour matching, a specific requirement for reduced gloss level had to be achieved. The Oman Civil Aviation Authority specified the need for a lower gloss level due to concerns that a highly reflective finish over such a large surface area may create issues for pilots during the approach and landing. So the development of the vitreous enamel to a Reduced Gloss Level (RGL) was undertaken in-house by Vitrex, after the colour matching process had been completed.”
Cottino says that, as the control tower is located in a corrosive environment close to the coast and exposed to wind-blown sand and high levels of UV radiation, Vitraclad vitreous enamel provided the ideal solution compared to the more traditional use of aluminium cladding panels, which are customary in the region. “The design and manufacture of the panels were undertaken in line with Vitrex's own recommendations for the use of vitreous enamel steel cladding in highly corrosive environments,” he concludes.
Views of the air traffic control tower at Muscat International Airport, which was clad with unique
'twisted' vitreous enamel panels supplied by Vitrex.
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11 - 12 August 2016 | Cape Town International Convention Centre
Conference Trade Expo∙
Conference Trade Expo∙
ConferenceTrade Expo
ConferenceTrade Expo
CLIMBING TO NEW HEIGHTS INTHE WESTERN CAPE’S CONSTRUCTION INDUSTRY
What to expect?
3500+ attendees
20+ hours dedicated networking
100+ exhibiting companies
40+ media and association partners
R1,5 million+ marketing coverage
www.cape-construction.co.za
CapeConstruction Cape-Construction @CT_Construction #capeconstructionJoin the conversation
Cape Construction Expo enables you to meet the entire construction value chain, and conclude several months of customer interaction in just a few days.
Contact us todayto book your space!
[email protected] 700 4356
Quote SAR
Growthpoint Properties, the largest South African primary listed REIT (Real Estate Investment Trust), is embarking on its largest rooftop solar installations
yet, with the ultimate goal of generating an impressive 6MWp. This translates into enough solar energy to power nearly 2,500 average South African homes.
AECOM’s Buildings and Places, Power and Industries and Construction Services teams are supporting Growthpoint Properties in delivering this work by providing the following professional services: Principle Agent, Electrical Design Reviews and Structural Integrity Assessments.
Growthpoint Properties has already completed the installation of photovoltaic (PV) solar panels with the capacity to generate more than 3.2MWp at seven of its office, retail and industrial properties. These rooftop solar installations are at its landmark assets across the country, including Cape Town’s V&A Waterfront, The Constantia Village Mall, Bayside Mall, and Airport Industria. In addition, the company has identified more than 70 buildings across its portfolio for possible future solar PV installations.
AECOM has also been approached by Growthpoint Properties to provide a proposal to manage the certification process of 11 sites, including two office parks in its existing building portfolio. It will deploy the Green Star SA™ Existing Building Performance (EBP) v1 rating tool developed by the Green Building Council of South Africa.
“A Four Star rating acknowledging best practice is targeted for all buildings,” Peet Pelser, Practice Area Lead – Mechanical, Electrical, Plumbing & Sustainability, Building Engineering, explains.
“AECOM has considerable experience in the renewable energy sector, with a broad involvement in a range of other ‘green’ energy projects,” Nico Kruger, Business Line Leader Energy – Africa, Resources & Industry, comments.
According to Werner Schneeberger, Market Sector Leader, Renewable Energy, Africa, some of the rooftop solar installations AECOM is currently involved with include:
• Key West Mall: 1.2MWp• Airport Industria: 290kWp• 33 Bree and 30 Waterkant: 103kWp• Inanda Greens and Sunnyside Office Park: 816kWp
Greening low-performance buildings
AECOM is actively working with Growthpoint Properties on a range of solar rooftop projects and existing building performance ratings where low-
performance buildings are being identified and corrective measures proposed.
Airport Industria is a recent AECOM solar power project.
The 103kWp 33 Bree project.
The 290kWp Airport Industria project.
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Tel: 021 949 9784 | Fax: 0866 528 141 Mobile: 083 463 8100 | Email: [email protected]
Unit B13, Bellville Business Park, Bellville
www.asbestos.co.za
CONTACT US
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Safe removal of all types of Asbestos roofingSafe removal of Asbestos rainwater goodsAsbestos roof maintenance and assessmentsRe-roofing/ re-claddingRoof insulationAsbestos and rubble skip removal RRubble skip hireRoof painting, sealing and waterproofingRegistered Asbestos Contractor with Department of LabourSafe work plansAsbestos SurveysSurface preparation, protection and coatingsRRe-instatement of non-hazardous insulation/fire proofing materials following removal of asbestos or hazardous materialsLand Remediation
Cape Asbestos Removals, founded in 2000 specialises in asbestos removal and management, decontamination & thermal insulation. We work in hazardous, demanding and sensitive environments. We operate throughout South Africa and have the scale, skills, resources, and expertise to deliver projects safely, to schedule and on budget.
Whether you are an industry titan or a new entrant, the Cape Construction Trade Expo offers unparalleled access to more than 100 suppliers and
solution providers in the construction industry.
Alan Winde, Minister of Economic Opportunities - Western Cape Government, attended the 2015 event and had this to say: “Really what this event did for me is it showed me that the key to every single space in our economy is the construction sector. While we choose various enablers or areas, whether it be electricity, water, the IDZ in Saldanha Bay or new hotels in the tourism space – construction fits across all.”
There is little doubt about the cyclical nature of construction activity, and as the only event that prioritizes the Western Cape construction sector, the Cape Construction Trade Expo provides the industry with a crucial platform for open engagement and to discuss trends, opportunities and solutions for the entire construction value chain.
“The construction sector has a particular dynamic where you need large companies to deliver on the biggest projects. Only the biggest construction companies have the working capital and the financial clout to manage really large government projects, but then at the same time you need to ensure that
the industry is open to competition, to start-ups and to small businesses. And that is a challenge for the construction sector – striking the balance by maintaining the viability and profitability of large players whilst still making sure that the market remains open to new entrants,” says Tim Harris, CEO of Wesgro.
Neal Serrao, Regional Sales Manager for TomTom Telematics, had this to say about the Expo: “Cape Construction has been great. It is a focused market space that we came to join, and we have found it to be very lucrative. Overall it has been great; we have loved it.”
Sean Pienaar from Enderstein van der Merwe shared the same sentiments, “Cape Construction is a great place to meet up-and-coming contractors...from subcontractors and suppliers to main contractors – we have met everybody in this sphere.”
Cape Construction Expo has truly become a must-attend event for the Western Cape construction industry, providing a unique opportunity for face-to-face interaction with the industry at large.
For more information, visit www.cape-construction.co.za or email Tracy-Lee Behr at [email protected].
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Cape Construction Trade Expo, now in its fourth year, will be held at the Cape Town International Convention Centre from 11 - 12 August 2016
and will once again provide industry with the opportunity to engage with stakeholders across the entire construction value chain – under one roof.
Errol Bryce (Commercial and Publishing Director) and Rashaad Essop (Portfolio Manager) in discussions with Alan Winde (Minister of Economic Opportunities – shown here in the centre) shortly after his interview.
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Unit B13, Bellville Business Park, Bellville
www.asbestos.co.za
CONTACT US
WHAT WE DO
WHO WE ARE
Safe removal of all types of Asbestos roofingSafe removal of Asbestos rainwater goodsAsbestos roof maintenance and assessmentsRe-roofing/ re-claddingRoof insulationAsbestos and rubble skip removal RRubble skip hireRoof painting, sealing and waterproofingRegistered Asbestos Contractor with Department of LabourSafe work plansAsbestos SurveysSurface preparation, protection and coatingsRRe-instatement of non-hazardous insulation/fire proofing materials following removal of asbestos or hazardous materialsLand Remediation
Cape Asbestos Removals, founded in 2000 specialises in asbestos removal and management, decontamination & thermal insulation. We work in hazardous, demanding and sensitive environments. We operate throughout South Africa and have the scale, skills, resources, and expertise to deliver projects safely, to schedule and on budget.
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