Trench Drainage Systems: Types, Benefits, Applications and Overview <br />Course Sponsor:<br />Jay R. Smith Mfg. Co.<br />...
Outline<br /><ul><li>Background, operation and design of trench drain system.
Design advantages of trench drain system.</li></ul>2<br />
Learning Objectives<br />At the conclusion of this course, you will be able to:<br />Describe the basic ideas of trench dr...
Trench Drainage<br /><ul><li>Drainage is the process of carrying water AWAY from a specific place.
The process of drainage has been around for many years.
Trench drainage (floor trench) can be referred to as: channel drainage, line drainage, trip drainage and slot drainage.
Trench drains are considered to be an open trench with removable grates. Slot drains are a slot in the pavement connected ...
Generally a trench is regarded as the completed job in the ground. A channel is an individual modular piece which when add...
Reasons for Surface Drainage<br /><ul><li>Reduce Ponding
Reduce Slip Hazards
Protect and Extend Life of Paved Surfaces
Protect Property from Flood Damage
Reduce Inconvenience to Public Users
Reduce Hydroplaning Hazard to Vehicles on Roads</li></ul>5<br />
Options for Handling Surface Drainage<br /><ul><li>Ignore It
Open Swale
Catch Basins
Trench Drains</li></ul>6<br />Open Swale<br />Catch Basin<br />Trench Drains<br />
Types of Drainage<br /><ul><li>Catch Basin Drainage
Modular Trench Drainage Systems
Cast in Place Trench Drains</li></ul>7<br />
Disadvantages of Catch Basin Drainage<br /><ul><li>Uneven appearance.
Complex, multiple grades to design and construct.
Deeper excavation required due to pipe depths.
Higher risk of ponding.
Pipes prone to blockage and failure.
Maintenance can be difficult and costly since piping is not accessible.
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11.01.04 Trench Drains

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&quot;This brand new Powerpoint Presentation details the types, benefits, and applications of the Smith Drainage Systems Trench Drains. This overview of the product line is an excellent resource tool for anyone interested in our trench drains.&quot;

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11.01.04 Trench Drains

  1. 1. Trench Drainage Systems: Types, Benefits, Applications and Overview <br />Course Sponsor:<br />Jay R. Smith Mfg. Co.<br />2781 Gunter Park Dr. E<br />Montgomery, AL<br />36109<br />Ph: 334-277-8520<br />Fax: 334-272-7396<br />Salesengineering@jrsmith.com<br />www.jrsmith.com<br />
  2. 2. Outline<br /><ul><li>Background, operation and design of trench drain system.
  3. 3. Design advantages of trench drain system.</li></ul>2<br />
  4. 4. Learning Objectives<br />At the conclusion of this course, you will be able to:<br />Describe the basic ideas of trench drainage system.<br />List the benefits of trench drainage systems.<br />Compare and contrast the differences between traditional trench drainage systems.<br />Cite case studies and installation examples of trench drain systems.<br />Describe how trench drainage systems can help reduce project costs.<br />3<br />
  5. 5. Trench Drainage<br /><ul><li>Drainage is the process of carrying water AWAY from a specific place.
  6. 6. The process of drainage has been around for many years.
  7. 7. Trench drainage (floor trench) can be referred to as: channel drainage, line drainage, trip drainage and slot drainage.
  8. 8. Trench drains are considered to be an open trench with removable grates. Slot drains are a slot in the pavement connected to underground drains and to not have removable grates.
  9. 9. Generally a trench is regarded as the completed job in the ground. A channel is an individual modular piece which when added to others makes up the drainage system.</li></ul>4<br />
  10. 10. Reasons for Surface Drainage<br /><ul><li>Reduce Ponding
  11. 11. Reduce Slip Hazards
  12. 12. Protect and Extend Life of Paved Surfaces
  13. 13. Protect Property from Flood Damage
  14. 14. Reduce Inconvenience to Public Users
  15. 15. Reduce Hydroplaning Hazard to Vehicles on Roads</li></ul>5<br />
  16. 16. Options for Handling Surface Drainage<br /><ul><li>Ignore It
  17. 17. Open Swale
  18. 18. Catch Basins
  19. 19. Trench Drains</li></ul>6<br />Open Swale<br />Catch Basin<br />Trench Drains<br />
  20. 20. Types of Drainage<br /><ul><li>Catch Basin Drainage
  21. 21. Modular Trench Drainage Systems
  22. 22. Cast in Place Trench Drains</li></ul>7<br />
  23. 23. Disadvantages of Catch Basin Drainage<br /><ul><li>Uneven appearance.
  24. 24. Complex, multiple grades to design and construct.
  25. 25. Deeper excavation required due to pipe depths.
  26. 26. Higher risk of ponding.
  27. 27. Pipes prone to blockage and failure.
  28. 28. Maintenance can be difficult and costly since piping is not accessible.
  29. 29. Possible interference with other utilities, i.e. electrical, sewage, etc.</li></ul>8<br />
  30. 30. Disadvantages of Cast in Place Trench Drains<br /><ul><li>High labor cost.
  31. 31. Time consuming due to on-site formwork.
  32. 32. Hand-formed poured-in-place concrete trenches often are not uniform in the slope.
  33. 33. Concrete absorbs water.
  34. 34. Difficult to get a uniform slope.</li></ul>9<br />
  35. 35. Disadvantages of Cast in Place Trench Drains (cont.)<br /><ul><li>Slower drainage due to wide trenches
  36. 36. Debris and standing water result from slower flow and create unsanitary conditions
  37. 37. Concrete is attacked my mild acids, caustics and saltwater
  38. 38. Concrete patching is difficult and time consuming
  39. 39. Grates often have to be ground or otherwise modified to fit and to keep from rocking</li></ul>10<br />
  40. 40. Trench Drainage<br /><ul><li>Neat, linear appearance
  41. 41. Simpler grades to design and construct
  42. 42. Easier to install due to shallower excavation and pre-sloped sections make it easier to construct since slope is built in
  43. 43. Continuously intercepts water and provides superior drainage
  44. 44. Minimal underground piping
  45. 45. Maintenance is quicker and easier since trench is at surface
  46. 46. Less interference with other utilities since excavation is shallow</li></ul>11<br />
  47. 47. Possible Uses for Modular Trench Drainage Systems<br /><ul><li>Food Processing Facilities
  48. 48. Animal Facilities
  49. 49. Stadiums and Sporting Facilities
  50. 50. Fire Stations
  51. 51. Vehicle Maintenance Facilities
  52. 52. Pools
  53. 53. Airports
  54. 54. Manufacturing Plants
  55. 55. Lawn and Garden Centers
  56. 56. Retail Stores
  57. 57. Parking Lots</li></ul>12<br />
  58. 58. Benefits of Precast, Modular Trench Drains cont.<br /><ul><li>Rapid drainage. The drain bottom is shaped to increase velocity during low flow conditions and helps in self cleaning.
  59. 59. Closed cell structure of polymers and negligible water absorption prevents collection of bacteria and stops gasoline and other pollutants from getting into the soil.
  60. 60. Highly chemical resistant. Not eroded by cleaning agents in wash-down water in food processing plants.
  61. 61. Easily maintained since smooth, radius channels don’t collect debris.</li></ul>13<br />
  62. 62. Application Factors in Modular Trench Drainage System Selection<br /><ul><li>Hydraulic Performance – the amount of liquid to be intercepted, collected and carried in a specific time period
  63. 63. Traffic type and frequency
  64. 64. Wheel size and type
  65. 65. Static versus dynamic loading
  66. 66. Loading – what loads will the trench be subjected to
  67. 67. Traffic type and frequency
  68. 68. Wheel size and type
  69. 69. Static versus dynamic loading</li></ul>14<br />
  70. 70. Application Factors in Modular Trench Drainage System Selection cont.<br />Durability– how the trench system performs over time<br /><ul><li>Material choices and performance
  71. 71. Chemical resistance
  72. 72. Installation
  73. 73. User Requirements – project specific options
  74. 74. Aesthetic – visual look requirements
  75. 75. Safety – ADA (Americans with Disabilities Act) requirements, pedestrian requirements – ladies heels, slip resistant finish, etc.
  76. 76. Security – ease of removal of grate</li></ul>15<br />
  77. 77. Sizing a Modular Trench Drainage System Example – Step 1<br />For an application that has 2” per hour of rainfall with a trench drain located across a paved area. The lot is level along the 130’ length and slopes to the center of the 65’ dimension. Existing conditions allow the outlet anywhere. <br />Step 1. Determine the total volume flow rate.<br />130’ x 65’ = 8450 Sq. Ft.<br />2” per hour / 12” per foot = 0.167’ per hour<br />0.167’ per hour X 8450 Sq. Ft. = 1411 CFH (Cubic Feet per Hour)<br />1411 CFH / 3600 Seconds per Hour = 0.39 CFS (Cubic Feet per Second)<br /><ul><li>0.39 CFS – Convert to GPM (Gallons per Minute) =
  78. 78. .39 * 7.48 * 60 = 175 GPM
  79. 79. 175 GPM is the total volume flow rate required for the catchment area.</li></ul>16<br />65’<br />130’<br />
  80. 80. Step 2. Decide on correct layout. Since the trench exceeds 100 feet in length and we would rather not use extension walls, the catch basin will be placed in the center and slope each end to the catch basin. <br /> 65’ 65’<br />17<br />Sizing a Modular Trench Drainage System Example – Step 2<br />
  81. 81. Application and Uses for Modular Trench Drainage Systems<br />18<br />Light Duty - <br /><ul><li>For use: Pedestrian, wheel chair and bicycle traffic areas.</li></ul>Medium Duty – <br /><ul><li>For use: Passenger cars and vans</li></ul>Heavy Duty - <br /><ul><li>For use: Commercial pneumatic tire traffic patterns, forklifts, and tractor trailers</li></ul>Extra Heavy Duty - <br /><ul><li>For use: Commercial solid tire traffic patterns, forklifts, and impacts from steel struts or metal wheels.</li></li></ul><li>Cast Iron Trench Drains<br />19<br />Features and Benefits<br /><ul><li>1’ long non-sloping channels.
  82. 82. Channel sections are bolted together.
  83. 83. Channel sections available with flashing flange and flashing clamp.
  84. 84. Channel sections can be provided with acid resistant coating when specified.
  85. 85. Channel sections are appropriate for high temperature applications.
  86. 86. Channel section grates can be provided with vandal proof screws when specified.
  87. 87. Channel sections can be provided with caulk, threaded or no-hub outlets.</li></ul>Applications<br /><ul><li>Truck Loading Docks
  88. 88. Parking Decks
  89. 89. Above Grade Applications</li></li></ul><li>Precast Modular Trench Drains<br />20<br />Features and Benefits<br /><ul><li>Lower installation cost; no formwork required.
  90. 90. Smooth interior finish for complete drainage.
  91. 91. Less than 1% water absorption per ASTM C-97 for high </li></ul> freeze/thaw resistance.<br /><ul><li>Slope is built into channels.
  92. 92. No grouting trowelling.
  93. 93. Rapid drainage. The bottom is shaped to increase velocity </li></ul> during low flow conditions and helps in self cleaning.<br /><ul><li>Closed cell structure of polymers and negligible water absorption prevents collection of bacteria and stops gasoline and other pollutants from getting into the soil.
  94. 94. Highly chemical resistant. Not eroded by cleaning agents in wash-down water in food processing plants.
  95. 95. Easily maintained since smooth, radius channels don’t collect debris.</li></ul>Applications<br /><ul><li>Food Processing Plants</li></li></ul><li>Fiberglass Trench Drains<br />21<br />Features and Benefits<br /><ul><li>Channel sections are available in 3’, 9’, and 9’ 10” long.
  96. 96. Multiple frame material available, powder coated steel, stainless steel and galvanized steel.
  97. 97. Channels are available in neutral (flat) and 1/8” sloped.
  98. 98. Channel depths range from 6 3/8” to 20 3/8” deep.
  99. 99. High flow bar grates available in galvanized steel and stainless steel material.
  100. 100. Fiberglass channels are available in two different resins, polyester and more chemical resistant vinylester.
  101. 101. 4”, 6”, or 8” vertical or horizontal outlets are available. </li></ul>Applications<br /><ul><li>Airport Hangers
  102. 102. Water Treatment Plants
  103. 103. Parking Lots</li></li></ul><li>Polymer Concrete Trench Drains<br />22<br />Features and Benefits<br /><ul><li>Available in two neutral depths and 20 interlocking, 0.6% pre-sloped channels.
  104. 104. The shallowest channel is 13.06” and the deepest channel is 17.81”.
  105. 105. Closing end caps and horizontal outlet caps provide for a complete drainage system.
  106. 106. Strengthening ribs on the channel sides create a stronger and safer system capable of withstanding the considerable loading imposed by the turning action of heavy wheeled vehicles.
  107. 107. Side profiling also provides anchoring to the surrounding concrete to prevent movement due to freeze-thaw cycles.</li></ul>Applications<br /><ul><li>Airports
  108. 108. Warehouses
  109. 109. Bus Depots
  110. 110. Service Stations
  111. 111. Military Bases
  112. 112. Highways</li></li></ul><li>Modular Stainless Steel Trench Drains<br />23<br />Features and Benefits<br /><ul><li>1 Meter Channel Sections, 39.38” long and 6.38” wide.
  113. 113. 4” Wide Throat with Bolting End Plates.
  114. 114. 23 Modular Chanel Sections Made of 16 Gauge, type 304 Stainless Steel.
  115. 115. 4 Neutral (flat) Channels and 15 Channels with .6% Build-in Slope.
  116. 116. Channel Inverts Range from 3.75” to 7.50”.
  117. 117. Regularly Furnished with Secure Light Duty Slotted Stainless Steel Grate.
  118. 118. 4” No-Hub Vertical Outlet on Channel Sections 2,5,10 and 15.
  119. 119. End Outlet Plates Available in 2”, 3”, and 4” No-Hub.
  120. 120. Available with Flashing Flange and Flashing Collar.
  121. 121. A variety of Stainless Steel Grates Available.</li></ul>Applications<br /><ul><li>Bottling Plants
  122. 122. Commercial Plants
  123. 123. Food Handling (Restaurants and Cafeterias)</li></li></ul><li>Case Studies<br />24<br />The Lincoln Center Performing Arts project was a renovation and required that existing load structures had to remain intact. Most of the project called for irregular or custom designed trench drains. An engineered stainless steel trench drain system was provided for the project.<br />Lincoln Center Performing Arts<br />New York, NY<br />
  124. 124. Case Studies<br />25<br />Trench Drains at <br />University of Cincinnati<br />The UC Trabert-Talbert Tennis Center consists of a six-court tennis complex with a central grandstand and was constructed over a 150-car underground parking garage. Due to the tennis courts being located above the parking garage, a trench drain with flashing was required to prevent any water leaks into the parking garage. A membrane drain with waterproofing clamping system was provided for the project.<br />
  125. 125. Case Studies<br />26<br />Automotive Service Center<br />A fortune 250 company built a large scale, high end luxury automobile showroom in central New Jersey. They requested a solution that could be designed and installed without delays and with minimal disruptions. A high capacity pre-sloped fiberglass trench drain system was provided for the project.<br />
  126. 126. Course Summary<br />By now you should be able to: <br />Describe the basic ideas of Trench Drains<br />List the benefits of Trench Drains<br />Compare and contrast the differences between traditional drainage and engineered trench drains<br />Cite case studies and installation examples where a trench drain systems benefited the owner<br />Describe how a trench drain system can help reduce project costs<br />27<br />
  127. 127. Trench Drainage Systems: Types, Benefits, Applications and Overview <br />Course Sponsor:<br />Jay R. Smith Mfg. Co.<br />2781 Gunter Park Dr. E<br />Montgomery, AL<br />36109<br />Ph: 334-277-8520<br />Fax: 334-272-7396<br />Salesengineering@jrsmith.com<br />www.jrsmith.com<br />

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