8,255
edits
Changes
Jump to navigation
Jump to search
no edit summary
Line 10:
Line 10:
*Layers of [[Reservoir_gravel|coarse aggregate]] to bed the chambers and redistribute water.
*Layers of [[Reservoir_gravel|coarse aggregate]] to bed the chambers and redistribute water.
*[[Pipes|Perforated pipe]]
*[[Pipes|Perforated pipe]]
+
+
+
+{| class="wikitable"
+! System type !! Pipe !! Vaults !! Arched chambers !! Crates
+|-
+| Materials || Plastic || Concrete || Plastic/concrete || Plastic
+|-
+| Footprint || Medium || Small || Large || Small
+|-
+| Stackable || Not usually (can be without infiltration) || Yes || Not usually (can be without infiltration) || Yes
+|-
+| Onsite assembly || Some || No || Yes || Yes
+|-
+| Void ratio || 60-65% || 75-85% || 50-65% || 95%
+|-
+| Maintenance access || Moderate || Excellent || Moderate || Difficult
+|-
+| Standard strength || H-20 || H-25 || H-20 || H20-HS25
+|-
+| Manufacturer || Contech || "Contech Stormtrap Rotondo" || "Contech Stormchamber Cultech" || "Ecorain Atlantis Stormtank"
+|}
==Planning Considerations==
==Planning Considerations==