What are the key factors to consider when selecting fasteners for geotextile overlaps in moderate-traffic areas?
When selecting fasteners for geotextile overlaps in moderate-traffic areas, the key factors to consider are a balance between the requirements for high-traffic and low-traffic areas. Here are the main considerations:
1.Penetration Depth:
- In moderate-traffic areas, fasteners with a length of 5-7 inches are typically suitable to provide a secure hold through the geotextile overlap.
- This depth helps anchor the fasteners into the underlying soil or base material to prevent pullout.
2.Holding Strength:
- The fasteners should have a minimum pullout resistance of 25-35 lbs per fastener.
- This increased holding strength compared to low-traffic areas helps withstand the moderate traffic loads.
3.Fastener Spacing:
- Space the fasteners 12-15 inches apart along the overlap to create a denser pattern.
- This spacing provides a balance between the tighter spacing for high-traffic areas and the more relaxed spacing for low-traffic areas.
4.Perimeter Anchoring:
- Anchor the perimeter edges of the geotextile with a tighter fastener spacing, such as every 9-12 inches.
- This helps prevent any separation or movement of the edges, which are more vulnerable to moderate traffic.
5.Fastener Type:
- Consider using a combination of fastener types, such as a mix of galvanized screws and geotextile pins with oversized washers.
By considering these factors, you can select the appropriate fasteners that strike a balance between the needs of high-traffic and low-traffic areas, ensuring a secure and durable geotextile installation in moderate-traffic applications.
