Anchor Bolt Pull Testing Across the Southeast

An anchor bolt pull test applies a controlled tensile load to a post-installed or cast-in-place anchor to verify it meets its design capacity. A proof load test is non-destructive — load is applied gradually, held for at least 15 seconds, and the anchor is monitored for discernible movement. If it passes, the anchor remains serviceable. An ultimate load test is destructive — it loads the anchor to failure to determine maximum capacity. Field testing follows ASTM E3121.

Yes. IBC Section 1705.3 requires periodic special inspection for all mechanical and adhesive anchors post-installed into hardened concrete. Georgia adopted the 2024 IBC with Georgia Amendments effective January 1, 2026 — jumping directly from IBC 2018. Test loads, acceptance criteria, and testing frequency must be shown on the construction documents.

In unconfined testing, the test rig supports are placed at least 1.5 times the effective embedment depth from the bolt center, allowing all failure modes — including concrete cone breakout — to develop naturally. In confined testing, supports are placed close to the anchor, compressing the surrounding concrete and preventing cone breakout. Confined testing is acceptable for proof load installation verification when the engineer confirms that concrete breakout does not govern the design tensile strength.

OSHA requires certified anchorage points and fall protection systems to undergo anchor pull testing at least once every five years. OSHA 1926.502(d)(15) requires fall arrest anchors to withstand 5,000 pounds or maintain a 2:1 safety factor. Roof anchors, tie-off points, davit bases, and engineered fall protection systems all fall under this recertification requirement.

Per IBC, if any anchor fails testing, all anchors of the same type installed by the same trade — not previously tested — must be tested until twenty consecutive anchors pass. Then the initial test frequency resumes. Failed anchors are typically cored out and replaced with adhesive anchors rated for cored hole conditions. The engineer of record determines the remediation approach.

We use Enerpac center-hole hydraulic cylinders with calibrated load cells and digital readouts. Bridge plates are sized to ensure proper support distance for unconfined testing. All equipment is calibrated and traceable. Test reports include equipment serial numbers, calibration dates, and load-displacement data.