TerraDrain® C-56 prefabricated chimney drains are constructed by fully wrapping a moderate strength, moderate flow capacity, formed polystyrene perforated core with a nonwoven filter fabric. The filter fabric is bonded to the core to prevent soil intrusion into the flow channels while allowing water to freely enter the drain core from both sides.
TerraDrain® C-56 chimney drains are available in 12”, 16” and 24” widths and provide a time saving, effective drainage solution for reducing hydrostatic pressure against retaining walls where full wall coverage is not required or is not feasible.
All values provided are intended for rapid comparison purposes, only. Please refer to a specific product’s Product Data Sheet (PDS) and the disclaimers therein for a detailed listing of all characteristics, associated definitions and values needed for structure design, specification compliance review and product submittal purposes. Please Download PDS for all information transfer, printing and submittal purposes.
| Property | Test Method | English | Metric |
|---|---|---|---|
Fabric |
|||
|
Material
1
|
PP | PP | |
|
Water Flow Rate
|
ASTM D4491 | 110 gpm/ft2 | 4483 Lpm/m2 |
|
Grab Tensile Strength
|
ASTM D4632 | 160 lbs | 0.712 kN |
|
CBR Puncture Resistance
|
ASTM D6241 | 450 lbs | 2.00 kN |
|
Apparent Opening Size
|
ASTM D4571 | 70 US Std. Sieve | 0.210 mm |
|
Permittivity
|
ASTM D4491 | 1.8 sec-1 | 1.8 sec-1 |
|
Grab Elongation
|
ASTM D4632 | 70 % | 70 % |
|
UV Resistance
|
ASTM D4355 | 70 % @ 500 hrs | 70 % @ 500 hrs |
|
AASHTO M 288-06
2
|
Survivability | Class 2 | Class 2 |
Core |
|||
|
Material
1
|
HIPS | HIPS | |
|
Thickness
|
ASTM D1777 | 0.25 in | 6.35 mm |
|
Compressive Strength
|
ASTM D1621 | 9000 lbs/ft2 | 431 kPa |
|
Flow Rate
3
|
ASTM D4716 | 12.5 gpm/ft | 155 Lpm/m |