Keep it Running! – Surface Drainage 201 – Design Basics for Modular Trench Drain Systems

Dominic Turner, Ing./Eng.National Sales Engineer

ArmtecDrainage Solutions

Frank KlitaSenior Sales Representative




Jamie KershawInternational Key Account Manager

HAURATON

KEEP IT RUNNING! - SURFACE DRAINAGE 201 DESIGN BASICS FOR MODULAR TRENCH DRAIN SYSTEMS

TECHNICAL WEBINAR

THE BROADCAST WILL BEGIN SHORTLY

FRIDAY MARCH 18, 2016 / 9AM PST / 11AM CST / 12PM EST

NEW PRODUCTLINE FROM ARMTEC



Frank KlitaSenior Sales Representative




Jamie KershawInternational Key Account Manager

HAURATON

FRIDAY MARCH 18, 2016 / 9AM PST / 11AM CST / 12PM EST

TECHNICAL WEBINAR

KEEP IT RUNNING! - SURFACE DRAINAGE 201 DESIGN BASICS FOR MODULAR TRENCH DRAIN SYSTEMS

NEW PRODUCTLINE FROM ARMTEC

YOUR HOST

Janine YetkeDirector of Marketing Armtec, Drainage Solutions

LinkedIn: ca.linkedin.com/in/janineyetke/enEmail: [email protected]

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Armtec is one of Canada’s largest infrastructure company supplying precast, corrugated steel and HDPE products and solutions. Every day, our proven products, engineered solutions and dedicated people are counted on to support construction and infrastructure projects in communities everywhere. With a national presence and a local focus on exceptional customer service, we are dedicated to building excellence.

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ABOUT ARMTEC

SECTORS

Armtec specializes in all infrastructure markets and segments and can help with any project to ensure you have the right products for the job. Our people have extensive experience and access to resources all across the country, and can help with all facets of product selection, installation and support.

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ABOUT ARMTEC

Armtec Drainage Solutions’ centralized engineering department consists of design engineers, a drafting team, and estimators.

Additionally, professionally licensed Region engineers are located in all Market Areas across the country.

DRAINAGE ENGINEERING SUPPORT & ROLESABOUT ARMTEC

Armtec is proud and excited to add the HAURATON line of surface drainage products to our Drainage Solutions portfolio!HAURATON has been a world leader in surface drainage solutions since 1956 and offers an extensive portfolio of linear surface drainage products.HAURATON products are sold in more than 60 countries across the globe and are known for their technical advancements and innovative designs.

EXCLUSIVE DISTRIBUTION AGREEMENTABOUT HAURATON

YOUR SPEAKERS

Dominic Turner National Sales Engineer – HAURATON ProductsArmtec, Drainage [email protected]

Jamie KershawInternational Key Account ManagerHAURATON GmbH

TOPICS

Surface Drainage 201

• Review of Linear Drainage

• Selection & Sizing Process

Loading

Durability

Client Requirements

Hydraulics

• Project Case Study

Selection Process

Design Basics for Modular Trench Drain Systems

REVIEW OF LINEAR DRAINAGE

LINEAR DRAINAGE – APPLICATIONS

LINEAR DRAINAGE – APPLICATIONS

MODULAR TRENCH DRAIN COMPONENTS

Catch basinLength: 0.5 m

End capoutlet

Locking bar

Channel Assembly: Trench drainLength: 1m (or 0.5 m)

Grate

End cap

Potential Issues of Point Drainage:• Costly; complex, time-consuming installation• Impractical; uneven surface• Inefficient performance; ponding and blockages• Increased maintenance costs; poor access,

extra structures• Deeper pipe inverts; conflict with underground

services

POINT DRAINAGE ISSUES

LINEAR DRAINAGE BENEFITS

Benefits:• More efficient at intercepting runoff water

• Ponding is reduced or eliminated

• Shallow depth of construction

• Easier grading

• More economical (fewer manholes, less pipe, faster installation)

• Easy access along the entire length of the trench drain

• Eliminates the “roller coaster” effect for vehicular traffic

• Aesthetic solution

RECYFIX® - Ideal for Cold Climates

• Proven performance over 20+ years Russia (-30°C and lower) Scandinavia (-30°C and lower; snow Oct-April)

• Temperature resistant -30°C and lower (full concrete encasement) Fit for purpose at -50°C

• Unaffected by frost No freeze-thaw weathering

• Corrosion resistant Unaffected by de-icing salts and solutions

COLD CLIMATES

RECYFIX® - Ideal for Cold Climates

• Designed for extreme conditions Trench drain and grates; durable composites Grates and locking in composites, galvanised steel,

stainless steel (various grades)• Structural integrity; within concrete encasement

Concrete anchors and structural ribbing Expansion joints

• Snow-plow friendly! Installed 3-5 mm below surface Load rated up to F900kN Impact resistant

• Maintenance friendly Quick and easy access Narrow slot / mesh openings High capacity trench drains

COLD CLIMATES

COLD CLIMATES

RECYFIX® PLUS – Red Square, Moscow, Russia


SELECTION & SIZING PROCESS




SURFACE DRAINAGE 101 - LINEAR DRAINAGE SOLUTIONS WITH MODULAR TRENCH DRAINS

Two Important Aspects Considerations Important Factors

1. Project Application a) Loading:Any foot or vehicle traffic/ load applied to channel and grating.

Standards provide a method of scale/ comparison (EN 1433)

b) Durability:Correct selection and installation required for longevity.Project site information gathered to understand the environment.Determines system selection.

c) Client Requirements:Channel and grates determined by client needs and project type.

Channel/grate selection influenced:- Clients design preference- Legal obligations




1. Project Application a) Loading:Any foot or vehicle traffic/ load applied to channel and grating.

Standards provide a method of scale/ comparison (EN 1433)

Overall Load Applied Wheel Type & Configuration Traffic Pattern

b) Durability:Correct selection and installation required for longevity.Project site information gathered to understand the environment.Determines system selection.

Channel & Grating Materials Channel Edge Design Chemical Resistance Effective Installation

c) Client Requirements:Channel and grates determined by client needs and project type.

Channel/grate selection influenced:- Clients design preference- Legal obligations

Aesthetics Legal Requirements User-Safety System & Project Security




2. Hydraulic Performance Determines the volume of liquid collected and removed in a given time period.




2. Hydraulic Performance Determines the volume of liquid collected and removed in a given time period.

Size of catchment area (length x depth = m2)

Rainfall intensity rate

Surface slope along channel (longitudinal gradient)

Outlet type, size, location

Channel configuration (constant depth, stepped fall)

Catchment area surface slope (towards channel)


PROJECT APPLICATION

LOADING – LOAD CLASS

A15

B125

C250

D400

E600

F900

15 kNResidential areas used by pedestrian and cyclists

125 kNSidewalks, pedestrian areas and residential parking

250 kNParking lots and general commercial areas

600 kNIndustrial areas used by hard tire forklifts and heavy vehicles

400 kNRoads, streets and other areas

900 kNSpecial areas with heavy wheel loads

Light-Duty to Medium-Duty Heavy-Duty to Extra Heavy-Duty

LOADING – OTHER FACTORS

Other Factors• Wheel Type & Configuration

Footprint Pneumatic or hard tire Multi-wheels

• Traffic Pattern Speed Frequency Turning and braking forces Direction (angle, perpendicular or parallel) Impact (ex: bottom of a slope)

• Location of Trench Drain Influences traffic pattern Protected by a structure?

LOAD CLASS BY APPLICATION


Zone Application Example Load Class

Domestic Gardens A15 – B125

Driveway B125 – C250

Sidewalks B125 – C250

Shopping Centres C250 – D400

Parking Lots C250 – D400

Parking Lot Entrances D400 – E600

Zone Application Example Load Class

Streets & Roads D400 – E600

Truck Stops E600 – F900

Loading Bays D400 – E600

Service Yards E600 – F900

Docks & Ports E600 – F900

Airports (Air Side) E600 – F900


DURABILITY

Material – ChannelComposite Concrete Polymer Concrete

Material PP, PE or HDPE Concrete(also incl. fibers or steel)

Polyester resin(with sand and aggregate)

Water Absorption(frost resistance)

No water absorption Higher water absorption(lower frost resistance)

Low water absorption

Chemical Resistance Excellent Good(with special additives)

High

Cutting & Drilling Very easy Difficult Prone to breakage

Impact Resistance High Medium to high Poor impact resistance(brittle)

Environment(material)

Recycled material,100% recyclable

Virgin material partially recyclable

Low recyclable uses

DURABILITY

Material – Grate & Locking• Stainless Steel• Composite• Ductile Iron• Galvanized Steel

Client Requirements• The systems are chosen for other reasons:

Aesthetics Regulations Safety & Security Maintenance Friendly

• ‘Americans with Disabilities Act’ (ADA) compliant grates

CLIENT REQUIREMENTS


HYDRAULICS

HYDRAULIC SIZING

HYDRAULIC DESIGN

Parameter Additional InformationA. Catchment Area Length (m) Trench drain running length dimension

B. Catchment Area Depth (m) Depth of drainage catchment area

C. Rainfall Intensity (mm/h) Provided by project engineer

D. Longitudinal Surface Gradient (%) Surface along which the trench drain is laid

E. Runoff Coefficient The permeability of the surface influences the runoff rate

F. Roughness of Channel Material Manning’s coefficient

G. Outlet Location, Size & Type Influences the discharge rate of the trench drain system

H. Catchment Area Ground Slope Can affect intake efficiency (surface water cross-over)

Armtec provides hydraulic design to optimize and size the correct trench drain system.

Required Inputs Drainage area parameters

• Dimensions• Run-off coefficient• Slope (in the direction of the trench drain run)• Design rainfall intensity

Trench drain configuration Outlet type, size and location

Returned Outputs Trench drain outflow Outlet flow velocity Hydraulic grade line in the channel

HYDRAULIC DESIGN SOFTWARE

HYDRAULIC DESIGN

Catchment Area

Central Run

Catchment Area Size: A x B = m2

Offset Run

Catchment Area Size: A x B = m2

HYDRAULIC DESIGN

Rational Method

Q = kCIAQ = Design Discharge (l/s)k = Conversion FactorC = Average Runoff CoefficientI = Design Rainfall Intensity (mm/h)A = Drainage Area (ha)

HYDRAULIC DESIGN

Manning’s Formula

V = 1/n * Rh2/3 * S1/2

V = Average Velocity of flow (m/s)Rh = Hydraulic Radius (m)S = Slope of energy line/hydraulic gradientn = Manning’s Roughness Coefficient (s/m1/3)

Empirical formula Best known around the world Widely used for open channel flow Assumes steady, uniform flow through the channel

HYDRAULIC DESIGN

Manning’s Formula Applied to Trench DrainsNon-Uniform Flow:• Water depth varies between successive

cross-sections along the channel• Flow velocity also varies

Unsteady Flow:• Lateral intake: Constant addition of water along the

channel

Modified Manning’s FormulaManning’s Coefficient n is increased from 0.010 to 0.025It has been confirmed by hundreds of laboratory tests.

HYDRAULIC DESIGN

Energy EquationSimplified assuming steady flow and incompressible fluid

p = Pressure (N/m²)γ = Specific weight of the fluid (N/m³)V = Fluid velocity (m/s)g = Gravitational acceleration (m/s²)z = Elevation above a horizontal datum (m)= Head loss (m)

Grate Hydraulics• The capacity of a linear drainage system is limited by the

trench drain dimensions and design, not by the intake capacity of the grates.

• Combined intake capacity of grates installed over a trench drain run is significant.

• Cut-off-drain intercepts ‘sheet flow’ of water across a pavement surface.

• Grate design will influence intake efficiency of trench drain.

GRATE HYDRAULICS

Grate Cross-Over

‘Surface water by-pass’ occurs… if grate intake area is reduced if water volume is too great if surface water approaches at speed if catchment area slope is steep if grate intake has been clogged

Required: Correct grate selection Regular maintenance

GRATE HYDRAULICS

GRATE HYDRAULICS

Grate Type Intake Interception By-Pass Benefits

Less Less Higher AestheticHeelSafe (6mm)

Medium - HighWider Slots

Medium Medium FunctionalHeelSafe (6mm)

HighWider Mesh

High Low Functional High Intake

HighLongitudinal

High Low Functional (ADA)High Interception

Depends on Design

Depends on Design

Depends on Design

Aesthetic

Medium-HighWider Slots

Medium-High Medium-Low AestheticDiscreet


PROJECT CASE STUDY

PROJECT CASE STUDY

Project Details• Industrial Logistics Development

133,000 sq. ft. unit New build (2015/2016)

• Client Mountpark Logistics Sarl EU Real estate and investment

company Specialist in development of

logistics properties• Location

Wakefield, UK

PROJECT CASE STUDY

Project Factors• Trench drainage for three

separate areas:

1. Car Park 2. Car Park Entrance 3. Logistics Area

• Three different systems required…

21

3 3

1

PROJECT CASE STUDY

Project Factors – High Rainfall!• Prolonged rainfall• Increasing incidence of thunderstorms• Highest 24 hour total: 341.4mm (Cumbria, 2015)• Rainfall intensity rates used to design projects: 50mm/hour – 75mm/hour (depending on project)

PROJECT CASE STUDY

Project Factors – Car Park • Large catchment area• Efficient surface drainage• Asphalt and block paving• Cars, light commercial vehicles,

occasional service vehicles• Traffic pattern

• Slow moving, turning, braking, static• Pedestrian areas

• Grate design with narrow slots (heels)• Aesthetic areas

• Corrosion resistant; maintain appearance• Durable and maintenance friendly

• Low long-term costs• C250kN load application

PROJECT CASE STUDY

System Selection – Car Park• RECYFIX®PRO Trench Drain

100mm wide unit (c/o), type 010 Polypropylene ‘PP’ composite body Modular units

• 1000mm long; 4.9kg/ metre C250kN loading (EN 1433: 2002) FIBRETEC grates

• Polyamide composite • Narrow slot width; 9mm

Secure grate fixing; ‘in-laid’ design• Central locking bolt/ bar • 1 x bolt/bar for each 500mm grate

PROJECT CASE STUDY

System Selection – Car Park• RECYFIX®PRO Trench Drain

PROJECT CASE STUDY

System Selection – Car Park• Why RECYFIX®PRO Trench Drain? Corrosion resistant body and grate Aesthetic appearance; no risk of oxidisation Narrow slot opening; 9mm wide Sufficient load capability (C250kN; EN 1433:2002)

PROJECT CASE STUDY

System Selection – Car Park• RECYFIX® Systems – Common Benefits Proven performance Lightweight units; quick and easy installation Safe and reliable; pedestrians and vehicles Hydraulically efficient High intake capacity Strong and durable Corrosion resistant UV stable Simple to maintain Low ‘long-term’ maintenance costs

These benefits apply to all RECYFIX systems

PROJECT CASE STUDY


separate areas:



21

3 3

1

PROJECT CASE STUDY

Project Factors – Car Park Entrance• Smaller catchment area• Efficient surface drainage• Asphalt surface• Cars, light commercial vehicles, service

vehicles• Traffic pattern

• Higher speed, accelerating, turning, braking, static

• Functional area; high intake capacity• Slotted grate design, wider slots

• Durable and corrosion resistant• Maintenance friendly

• Low long-term costs• D400kN to E600kN load application

PROJECT CASE STUDY

System Selection – Car Park Entrance• RECYFIX®NC Trench Drain

100mm wide unit (c/o), type 010 Polypropylene ‘PP’ composite body Modular units

• 1000mm long; 11.6kg/ metre E600kN loading (EN 1433: 2002) Spheroidal ‘ductile iron’ slotted grates

• Grade EN GJS 500-7 (EN 1563) = ASTM 70-50-05• 10mm slot width

Secure grate fixing; ‘in-laid’ design• 8 x steel bolts/ metre • Fixed to rigid ‘PP’ edge rail

PROJECT CASE STUDY

System Selection – Car Park Entrance• RECYFIX®NC Trench Drain

PROJECT CASE STUDY

System Selection – Car Park Entrance• Why RECYFIX®NC Trench Drain? Higher load capability (E600kN; EN 1433:2002) Resistance to ‘dynamic’ and ‘impact’ forces Durable construction (grate fixed 8 x bolts/ 1metre) Lightweight units; quick and easy installation

PROJECT CASE STUDY


separate areas:



21

3 3

1

PROJECT CASE STUDYProject Factors – Logistics Area• Extensive catchment area• Efficient surface drainage• Concrete pavement• Heavy goods vehicles (HGV’s)• Traffic pattern

• Ultra-heavy-duty loads, accelerating, turning, braking, static

• Dynamic and impact forces• Functional area; high intake capacity

• Longitudinal grate design, wider slots• Efficient surface water interception

• Durable and corrosion resistant• Maintenance friendly

• Low long-term costs• F900kN load application

PROJECT CASE STUDY

System Selection – Logistics Area• RECYFIX®HICAP F Slot Drain F900kN

• RECYFIX®HICAP F 100 (11.5 kg)• RECYFIX®HICAP F 150 (12.0 kg)• RECYFIX®HICAP F 200 (13.5 kg)

• 1.0 metre long• Polypropylene ‘PP’ composite body• F900kN loading (EN 1433: 2002)• Industrial grate, 14mm wide slot• Spheroidal ductile iron

• Grade EN GJS 500-7 (EN 1563) = ASTM 70-50-05• KTL ‘cathodic dip’ coating• 500mm long grate units

PROJECT CASE STUDY

System Selection – Logistics Area• RECYFIX®HICAP F Slot Drain F900kN• Industrial grate, 14mm wide slot• Intake cross section area: 124 cm2 / metre• Maximum intake capacity:

6.5 litres/ second/ metre (20mm water depth) 468mm/hour (5000sq metre area)

PROJECT CASE STUDY


PROJECT CASE STUDY


PROJECT CASE STUDY

System Selection – Logistics Area• Why RECYFIX®HICAP F Slot Drain? High load capability (F900kN; EN 1433:2002) Resistance to ‘dynamic’ and ‘impact’ forces High intake; efficient interception (6.5 l/s/m) High capacity system; drain extensive areas Hydraulically efficient; stepped fall configuration High level corrosion resistance (PP, KTL coatings)

PROJECT CASE STUDY

Hydraulic Design Proposal• ‘Hydraulic Design Software’• Consultant issued project data

CAD drawings Site layout plan Drainage layout

• Two rainfall intensity rates provided Car Park: 30 Year Storm (30 Min. Duration)= 50mm/ hour Logistics Area: 100 Year Storm= 63mm/ hour

• Run-off coefficient• Car Park: Asphalt (0.8)• Logistics Area: Concrete (0.9)

PROJECT CASE STUDY

Hydraulic Datasheets – Car Park

PROJECT CASE STUDY

Hydraulic Datasheets – Car Park & Entrance

PROJECT CASE STUDY

Hydraulic Datasheets – Logistics Area

PROJECT CASE STUDY

Car Park & Car Park Entrance

A

A

B

B C

C

PROJECT CASE STUDY

D

D

E

E

Logistics Area

1:60

PROJECT CASE STUDY

Modular Catch Basins RECYFIX®PRO & RECYFIX®NC

PROJECT CASE STUDY

Modular Catch Basins RECYFIX®HICAP F Slot Drain

PROJECT CASE STUDY

Car Park

PROJECT CASE STUDY

Car Park

PROJECT CASE STUDY

Logistics Area

PROJECT CASE STUDY

Logistics Area

PROJECT CASE STUDY

Logistics Area

PROJECT CASE STUDY

Logistics Area

PROJECT CASE STUDY

Customer Feedback• Mountpark Logistics SARL EU (Client) Very satisfied with the high quality finish achieved by RECYFIX® systems.• Black & White Contractors Ltd (Ground Workers) Appreciated the speed and ease of installation due to lightweight systems.• Colin Taff (HAURATON Regional Manager): “Throughout the process the contractor loved the products – mainly due to speed of installation.” “The end results look great too, so the client is happy.”

Contact Your Local Sales Rep:www.armtec.com/sales-offices/

Todays Speakers:

Dominic [email protected]

Jamie KershawHAURATON GmbH

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Todays Speakers:

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Jamie [email protected]

Engineering

Keep it Running! – Surface Drainage 201 – Design Basics for Modular Trench Drain Systems