Anchor Fasteners
Verified by SOLBE Structural Engineering Board
Definition
Anchor fasteners are high-strength structural bolts, typically mechanical expansion anchors or chemical adhesive systems, designed to anchor primary solar mounting legs or baseplates into concrete foundations or masonry elements.
Technical & Structural Breakdown
For concrete rooftops or ground mount columns, anchor fasteners transfer high shear and tensile uplift forces to the foundation block. Expansion anchors (such as wedge anchors) rely on friction and displacement inside the drilled concrete hole, while chemical anchors use resin adhesion to eliminate expansion stress on the concrete edge. Fastener depth and diameter calculations are governed by the concrete grade (typically M20 or M25) and dynamic wind load pressures.
Engineering Specifications
| Compliance Standard(s) | DIN 976, ASTM A325, IS 1367 |
|---|---|
| Primary Use Cases | Securing baseplates of triangular structures, ballasted roof systems, and ground mount columns to concrete pillars. |
| Engineering Category | Hardware |