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Auroguard PP Silt Fences are temporary sediment control barriers consisting of woven polypropylene geotextile fabric attached to support posts and installed along contours at the perimeter of construction sites and disturbed slopes. As stormwater flows through the fabric, fine sediment is filtered out and deposited on the uphill side, preventing sediment-laden runoff from entering drainage channels, water bodies, and adjacent properties. Specified as a best management practice (BMP) on NHAI, PWD, and state highway construction projects under environmental clearance conditions. Supplied as pre-assembled fence with posts, or as fabric rolls for site assembly. UV-stabilised for 12–24 months service life matching typical construction period.
| Parameter | Specification |
|---|---|
| Fabric Material | Woven polypropylene, UV-stabilised |
| Apparent Opening Size (AOS/O95) | 0.15–0.60mm (ASTM D4751) |
| Permittivity | 0.05–0.20 s⁻¹ (ASTM D4491) |
| Grab Tensile Strength | ≥ 450 N (ASTM D4632) |
| Fabric Height | 600mm / 900mm |
| Post Spacing | 1.5m – 2.5m (depending on slope) |
| Post Material | Wooden stake (50×50mm) or steel U-post |
| Standard | ASTM D6461, IS 16352, NHAI BMP Guide |