Carbon Steel Hook Bolt J-Bolt M24 with Dacromet Coating for Outdoor Construction and Marine Equipment

General Provisions and Dimension Verification for Anchor Bolts

Article 1: There are generally two methods for embedding anchor bolts in concrete foundations: pre-embedding and the method of embedding via secondary grouting into pre-drilled holes.

Article 2 The method of embedding anchor bolts directly into the foundation is applicable to towers, tall vessels, spherical tanks and machinery subject to significant vibration.

Article 3 When embedding anchor bolts directly, the distance a between the centreline of the anchor bolt and the edge of the foundation shall be ≥100 mm, as shown in the figure below. Where this cannot be met, the civil engineering discipline must be consulted to reinforce the foundation reinforcement.

Clause 4: Reserve holes for anchor bolts; after inserting the anchor bolts, secure them by grouting.

This method is suitable for stationary equipment such as horizontal vessels, heat exchangers and small vertical vessels, as well as machinery and pumps that generate minimal vibration. Its advantage is that it facilitates the adjustment of anchor bolt positioning dimensions without the need for positioning templates.

Clause 5: The dimensions of the reserved holes must meet the requirements of both civil engineering works and equipment installation. See the diagram below.

The minimum dimensions of the reserved holes (A × A) shall be 100 × 100 (mm).

The distance from the bolt flange to the hole wall (e) shall be ≥20 mm, and the distance from the hole wall to the edge of the foundation (b) shall be ≥100 mm. Where b cannot meet the 100 mm requirement, the bolts may be embedded, or the structural engineering department may be consulted to reinforce the foundation reinforcement.

The distance from the bolt flange to the bottom of the hole (B) shall be 80 mm.