IS 11501:1995 is the Indian Standard (BIS) for installation and testing of mechanical anchor fasteners for use in concrete. 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.
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Cracked Concrete Testing | Not explicitly required or defined. Testing is assumed in uncracked concrete. | Mandatory for anchors to be qualified for use in tension zones of concrete. Standardized crack width (e.g., 0.3mm or 0.5mm) is maintained during test. | ACI 355.2 / ETAG 001 |
| Basis of Design Load | Permissible load = Ultimate test load / global Factor of Safety (typically ≥ 3). | Design Resistance is based on Characteristic Resistance (5% fractile of test results) divided by partial safety factors (γ_m). | EAD 330232-00-0601 |
| Test Concrete Strength | Recommends M20 grade concrete (approx. 20 MPa cube strength). | Requires tests in both low-strength (e.g., C20/25) and high-strength (e.g., C50/60) concrete to assess sensitivity. | ETAG 001 |
| Number of Qualification Tests (per series) | Recommends at least 3 tests for site-specific checks. | Requires a statistically significant number, typically n=5, n=10 or more, depending on the specific test series (e.g., reference tests, reliability tests). | ACI 355.2-19 |
| Seismic Qualification | No provisions or requirements. | Requires extensive simulated seismic tests including cyclic tension and alternating shear to assess performance. | ACI 355.2-19 / EAD 330232-00-0601 |
| Installation Safety Check | Not specified. | Mandatory tests to check anchor sensitivity to installation errors, such as over/under-torquing and improper hole cleaning. | ETAG 001 |