This code specifies the procedures for installing and conducting on-site performance tests (tension and shear) on mechanical anchor fasteners used in hardened concrete. It provides methods for test setup, load application, and the evaluation of results to determine the anchor's characteristic resistance.
Lays down the procedure for installation and testing of mechanical anchor fasteners in concrete.
Quick Reference Values
Min concrete strength for testing20 MPa
Min duration to reach ultimate load in tension test60 seconds
Min spacing between test anchors8 x effective embedment depth (8hef)
Min edge distance for test anchor4 x effective embedment depth (4hef)
Acceptance criteria for displacement at service loadDisplacement should not be more than 1.5 mm
Key Formulas
Fk = Fm - k * s — Characteristic resistance from mean (Fm), standard deviation (s) and factor (k) of test results
Practical Notes
This standard has been superseded by IS 16327 for design, but its testing principles remain relevant for on-site proof loading.
Hole cleanliness (removing all dust and debris) is critical for the performance of all anchor types and is a common source of failure if not done correctly.
For torque-controlled anchors, always use a calibrated torque wrench to apply the manufacturer-specified torque; over or under-torquing severely compromises anchor capacity.