Keep it Running! – Surface Drainage 201 – Design Basics for Modular Trench Drain Systems
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Transcript of 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
ArmtecDrainage Solutions
Dominic Turner, Ing./Eng.National Sales Engineer
ArmtecDrainage Solutions
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
Dominic Turner, Ing./Eng.National Sales Engineer
ArmtecDrainage Solutions
Frank KlitaSenior Sales Representative
ArmtecDrainage Solutions
Dominic Turner, Ing./Eng.National Sales Engineer
ArmtecDrainage Solutions
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]
JOIN THE DISCUSSION
At any time during the presentation, please enter your questions into the Question Log
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• Formal completion certificates are emailed within one week of attending• Check your local guidelines if unsure of your requirements
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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.
Stormwater Solutions
Mining & Energy
Commercial & Retail Constructions
Transportation Underground & UtilityInfrastructure
Sports & Entertainment
Institutional Construction Industrial Construction Agriculture
Commercial & Residential Landscaping
Forestry Residential & Hospitality
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
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
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
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)
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
SELECTION & SIZING PROCESS
SURFACE DRAINAGE 101 - LINEAR DRAINAGE SOLUTIONS WITH MODULAR TRENCH DRAINS
Two Important Aspects Considerations Important Factors
2. Hydraulic Performance Determines the volume of liquid collected and removed in a given time period.
SELECTION & SIZING PROCESS
SURFACE DRAINAGE 101 - LINEAR DRAINAGE SOLUTIONS WITH MODULAR TRENCH DRAINS
Two Important Aspects Considerations Important Factors
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)
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
LOAD CLASS BY APPLICATION
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
Client Requirements• The systems are chosen for other reasons:
Aesthetics Regulations Safety & Security Maintenance Friendly
• ‘Americans with Disabilities Act’ (ADA) compliant grates
CLIENT REQUIREMENTS
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 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• 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
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 – 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• 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
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 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
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
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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Design Basics for Modular Trench Drain Systems
QUESTIONS?
At any time during the presentation, please enter your questions into the Question Log
Contact Your Local Sales Rep:www.armtec.com/sales-offices/
Todays Speakers:
Dominic [email protected]
Jamie [email protected]