Permavoid 400MD

Accessories

Geotextiles

The following are for guidance only. Refer to design documents for site specific requirements.

1. Non-woven fabric for separation and/or infiltration:
– Tencate – Mirafi 1100N (or approved equal)
2. Woven fabric for separation and/or infiltration:
– Tencate – Mirafi HP270 (or approved equal)
3. Waterproof Membrane Liner for retention and/or detention:
– 40 mil HDPE or LLDPE (or approved equal)

Physical Properties

Material Polypropylene Weight per unit 21.49 lbs 9.75 kg Length 39.37 in 1000 mm Width 19.69 in 500 mm Depth 15.75 in 400 mm Area per unit 5.382 ft² 0.500 m² Occupied volume per unit 7.063 ft³ 0.200 m³

Structural Properties

Vertical compressive yield 88.5 psi 610 kPa Lateral compressive yield 9.1 psi 63 kPa Vertical deflection strength 221 psi / in 60 kPa/mm Lateral deflection strength 16.2 psi / in 4.4 kPa/mm Vertical creep limit (60 year) 23.5 psi 162 kPa Lateral creep limit (60 year) 4.5 psi 30.9 kPa

Hydraulic Properties

Average perforated surface area 55% Volumetric void ratio 95% Void volume per unit 6.710 ft³ 0.190 m³

Other Properties

Recycled content 100% Recyclability 100% Country of origin United States of America