InnovatIve StruCtural Steel Systems

STEELstructural

low Floor-to-Floor Height solutions

COMSLAB® is a long span & shallow composite fl oor system that helps structural steel compete with the low fl oor-to-fl oor concrete designs. With depths as low as 10½ in., it can be combined with various proprietary fl ush beams or conventional AISC sections hidden in the fl oor section. COMSLAB® is a lightweight assembly that has UL listed UNRESTRAINED ratings of 1, 1½ and 2 hours for spans of more than 30 ft. It is ideal for all elevated concrete slab construction such as hotels, schools, parking, offi ce, multi-residential, and medical buildings.

Get more information on COMSLAB® by contacting us at [email protected].

The Girder-Slab® System is an ideal solution for multi-story residential projects combining value, erection speed and low fl oor-to-fl oor heights. The system integrates the D-Beam® girder with a conventional structural steel frame that allows hollow-core plank to rest on the bottom fl ange of the beam and be grouted into place. The Girder-Slab System is designed by the owner’s licensed architects and structural engineers, and is competitively available from your preferred steel fabricators.

More information found at www.girder-slab.com.

InnovatIve struCtural steel systems

Think, design, and build with structural steel—outside the box. Innovations beyond conventionally framed, connected, and built structural steel have changed the way designers approach projects. Challenges ranging from fast construction dormitories to streamlined connections have yielded some very successful innovations that are now being used on projects nationwide. Below are systems that either the AISC Steel Solutions Center has worked with, were promoted at NASCC: The Steel Conference, or were featured in Modern Steel Construction as a Hot Product. This document will be updated as new innovations enter the market that demonstrate successful applications utilizing structural steel for various building challenges. For the latest and greatest innovations, to add one to our list, or to learn more about how to use them on your next project, visit www.aisc.org/solutions or contact us at [email protected].

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Deltabeam is a superior composite slim-fl oor system, combining the strengths of steel and concrete for multi-story buildings of any kind. Fitting in the plane of the fl oor allows fl exible interior lay-outs and easy HVAC installations. Erection is simple and fast. Deltabeams can also serve in long, curved, or cantilevered span conditions.

Get more background on Peikko’s Deltabeam at: www.peikkousa.com/product-group-us/c=Deltabeam.

Connection solutions

ARMATHERM Thermal Break SolutionSTOP cold transfer in structural connections with a Thermal Break. Armatherm is the original bolt through thermal break solution installed on over a thousand projects worldwide. Offering the highest compressive strength with zero compression and a thermal conductivity of 0.20 W/mK, Armatherm is machined to customer prints from stock sheets giving unrivalled delivery time. Isolation washers and sleeves are also available.

Contact us to discuss your project at www.armatherm.com.

Cast ConneX® products and services simplify the design and enhance the performance of structures by enabling architects and engineers to implement cast steel components into their structural systems. They take pride in collaborating in the creation of safer, innovative, and more beautiful built environments. Cast ConneX products and services include High-Strength Connectors™, Universal Pin Connectors™, Scorpion Yielding Connectors™, and Custom Components.

Get more info at www.castconnex.com.


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ConXtech® reduces the structure of a building to a “chassis” of systemized components. These connections are simply assembled by lowering and locking them into place on-site. ConXR™ is ideal for mid to high-rise residential structures, including mixed-use, hotel, student, military and senior housing. ConXL™, ConXtech’s long span system, brings a systemized solution for commercial offi ce, GSA, military, R&D, data center, hospital, retail, educational, institutional and parking structures.

Get more background on ConXtech at www.conxtech.com.

Fabreeka StructuralThermal Break Pad/ConnectionFabreeka’s structural thermal break pad/connection, or thermal insulation material (TIM), is manufactured from a fi berglass-reinforced laminate composite. The properties of this material provide a thermally effi cient, energy-saving product for construction that prevents thermal bridging in structural connections. TIM is a load-bearing “thermal break” used between fl anged steel connections. The product’s primary benefi ts include its high load capacity, which maintains structural integrity, and its low thermal conductivity, which reduces heat loss. It also eliminates potential condensation and mold. TIM material is supplied in sheets or cut to size per customer drawings/specifi cations and is available in thicknesses of ¼ in., ½ in. and 1 in. It is also supplied as thermal break washers for bolted connections between external and internal steelwork.

For more information, go to www.fabreeka.com.

The SidePlate® connection is much stiffer than other moment frame connections, so a SidePlate design uses lighter lateral beams and columns (and often fewer lateral joints). Accordingly a SidePlate design saves money vs. conventional moment frame designs and can even be competitive with braced frame designs while eliminating the diagonal braces. The SidePlate connection was developed post-Northridge for seismic applications and later proved to be the best-performing steel connection in full-scale blast and progressive-collapse testing carried out by the Dept. of Defense. Recent enhancements to the assembly and the design of the connection itself now result in SidePlate designs saving money on projects in any design criteria: wind, seismic, blast, or progressive collapse. The SidePlate connection can be constructed by any fabricator using standard steel plates and downhand fi llet welds (both shop and fi eld), so SidePlate jobs can be competitively bid. SidePlate’s optimization and design services are provided at no charge to the specifying engineer, as the license fee is paid by the steel fabricator during construction phase.

More information is available at www.sideplate.com.

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New Millennium offers FreeSpan™ castellated and cellular beams for a highly architectural and cost-effective structural option. The typically longer spans erect faster. Lighter framing reduces column and footing sizes. Web openings allow mechanical, electrical and plumbing to pass through.

• One piece spans up to 90 feet.• Depths up to 48 inches• Straight, camber and combined weight options• Galvanized options are available• Easily fireproofed on jobsite by others • Product is 100% recyclable• Longer span beams erect faster• MEPs pass through web openings• Architecturally appealing when exposed

More information on New Millennium FreeSpan™ castellated and celluar beams can be found at www.newmill.com/products/products_castellated_beams.

The SMARTBEAM® offers versatility, reliability and economy for all types of floor and roof structures. The beams are aesthetically pleasing, lightweight and structurally sound. Some benefits include:

• Asymmetric composite design increases stiffness of floor, therefore improving vibration characteristics.

• Eliminates the need for intermediate columns since the SMARTBEAM® economically spans the same width as wide bay systems.

• Less bridging to install compared to joist floor systems. • Faster erection due to fewer pieces with long span SMARTBEAM® system. • Lowers floor-to-floor height by passing ductwork and utilities through openings. • Asymmetric sections produce most economical composite design.

Get more background on SMARTBEAM® by CMC Steel Products at www.cmcsteelproducts.com.

Castellated and Cellular BeamsCastellated and cellular beams allow for lighter beams framing longer spans. They are available from two suppliers:


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Integrity Wall™, developed by South Shore Iron Works, is a revolutionary building system based on a simple yet innovative high-efficiency structural steel wall panel design. Panels are fabricated offsite with HSS (Hollow Structural Sections) and shipped vertically with sheathing already installed and are ready for placement. Unlike other panels there is no need for critical vertical alignment and joist layout is independent of stud spacing, simplifying erection and allowing larger openings. Integrity WallTM shear wall panels can potentially eliminate CMU or concrete building cores in certain applications. Panels have been tested for 1, 2, 3 and 4 hour ratings. Standard panels are up to 32’ long, 12’-5” high. Greater heights are obtainable by stacking panels. Strength, flexibility, and design versatility produce a complete building shell at lower cost with schedule savings than with conventional construction.

Find out more about Integrity Wall™ at www.integritywallpanel.com.

TTG One Story High Rise System™

The “One Story High Rise System” constructs floors less than six feet off the ground, requiring no cranes and no tie-offs, then lifts them into position for construction at roughly twice the speed of conventional approaches. Structures of virtually any size or shape can be built with column-free spaces and 50% less structural weight. TTG is an AECOS corporation.

For more information go to: www.ttgcorporation.com.

modular solutions

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Versa-Floor™ is a family of Engineered Solutions™ devoted to specifi c building applications. They include:

• High Rise – HR • Standard Residential – SR• Specialty Platforms – SP • Commercial Spaces – CS• Healthcare – HC • Parking Garages – PG

The Versa-Floor™ family blends steel’s speed and versatility with concrete’s strength and durability. It utilizes long-span composite fl oor technology that’s shallow depth and weighs as much as 33% less than a comparably utilized cast-in-place concrete fl oor.

Versa-Floor™ combines multi-functioning features with structural design fl exibility to meet a variety of design & construction needs.

• Non-combustible & UL rated • Clear spans up to 35’-0”• Noise mitigation • Predictable vibration performance• Flat surfaces • Better ways to integrate MEP services

Versa-Floor™ adopts off-frame Panelized Delivery Methods™ (PDM) that are cost effective and safe. Installation practices utilize traditional labor and equipment resources.

CSi®, headquartered in Columbia, SC, integrates engineering and manufacturing to perform as a system solutions provider.

Get more information at www.versafl oor.com.


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BIGGer and Better Innovations

ASTM A1085 MaterialA brand new material specification for Hollow Structural Sections (HSS) was published in the U.S. in April 2013. This material provides enhanced performance and reliability for seismic and dynamic controlled structures. It is anticipated that the AISC Committee on Specifications will shorty release guidelines allowing designers to take advantage the full nominal wall thickness in design—which will ultimately provide more economic designs.

Highlights of the new specification include:• Uniform Minimum Yield Stress of 50ksi for all shapes• Maximum Yield Stress of 70ksi for all shapes—the first material

specification in Europe or North America to provide this• Standard Charpy notch toughness (CVN) values provided for all

material, with an option for project specific CVN if desired• Tighter wall thickness tolerances and the addition of an overall mass

tolerance allow designers to use full nominal wall thicknesses and section properties in design.

This material will be treated as a complementary specification to ASTM A500. Check with domestic fabricators/producers for availability.

More information can be found at www.aisc.org/hss.

AerolonA new insulative coating, utilizing aerogel particles, has been developed by Tnemec Company, Inc. Series 971 Aerolon Acrylic is a spray-applied product that offers exceptionally good thermal properties compared to traditional insulative coatings and conventional insulation materials. With a thermal conductivity rating of 35 mW/mK and an R-Value of 4.1 per inch, Aerolon Acrylic is nearly twice as efficient as other insulative coatings and is comparable to insulation materials such as polyurethane foam and mineral wool. Used primarily over metal substrates as part of a complete coating system, Aerolon Acrylic’s protective characteristics address deficiencies found in other insulation materials. These characteristics—including ultra-low heat transfer, high build and fast application, worksite safety and protection, and condensation control—are in addition to the well-documented corrosion protection found in traditional Tnemec products.

This next-generation coating system, with advanced thermal conductive properties, reduces the formation of condensation by insulating cool metal from warm, moist air; making it ideal for areas where condensation is a safety or corrosion concern. With the coating system attached directly to the substrate, Aerolon also resists corrosion under insulation (CUI) by reducing the possibility of moisture entrapment or infiltration. The system is easily spray-applied, covering locations that regular insulation cannot, over bends and bolts that would be otherwise difficult to insulate.

Reference www.tnemec.com/aerolon for more information.

F127-13 August 2013

Atlas Jumbo HSSIn 2012, Atlas Tube, a division of JMC Steel Group, partnered with Nippon Steel and Sumikin Metal Products Co. Ld (NSMP) and Mitsui and Co. Ltd. to supply “jumbo” hollow structural sections (HSS) to the North American market. In 2013, Atlas increased the size range to include 18” square to 22” square with wall sizes ranging from .375” to .875”.

Over the past twelve months, Atlas Tube has seen an increase in demand for these products. The products have been used in vertical column aplications in a large “Box Store” distribution center and in a the new headquarters of a Fortune 100 company located in California. Because of its high-load capability, the jumbo HSS products were selected as a more efficient alternative to a open sections and built-up, welded box sections.

The jumbo HSS products are provided by Atlas Tube via its Chicago, IL facility. Atlas has partnered with the following service centers who will carry local inventory of the product.

• Kloeckner Metals – Roswell, GA• Tubular Steel – St. Louis, MO• Totten Tubes – Los Angeles, CA

For more information, visit www.atlastube.com/jumbo-hss.

Gerdau MC12×14.3Channel Stair Stringer ChannelsThe MC12×14.3 Stair Stringer Channels, used primarily in the manufacture of stair frames, are produced at Gerdau’s steel mill in Calvert, City, Ky. Gerdau is the only company offering this product and the mill has the largest selection of MC channels in the United States. The section is lighter and takes up less floor space than the C12×20.7 option, while providing flange dimensions often needed in stair framing applications, but not available in the lighter C12×10.6. This profile offers a flange width of 21⁄8 in., allowing for a railing post to be fully welded all around and/or the use of a ¾-in. rod in the flange. It also has a large section modulus of 12.7 in., resulting in more versatility in stair width and length and more strength to meet today’s load requirements, as compared to the C12×10.6. It has a slimmer profile, which makes it space saving, and it is less expensive because it weighs less. The steel is made to conform to ASTM A36 and is also available in other structural grades. With the objective of becoming the supplier of choice for customers in the sector, the continued development of the Stair Stringer Channels exemplifies Gerdau’s capacity to send innovative products to the marketplace.

For more information, visit www.gerdau.com/longsteel.


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InnovatIve StruCtural Steel Systems