Geotechnical investigation and testing — Testing of geotechnical structures Part 6: Load testing of soil nails and rock bolts (Edition 1, 2026)

Abstract
This document establishes the specifications for the execution of tension tests to be carried out on soil nails and rock bolts.

NOTE 1 Soil nails and rock bolts are referred to as elements in the scope of this document.

NOTE 2 This document covers but is not limited to grouted soil nails and rock bolts.

NOTE 3 This document does not provide specification for the number of tests, the type of test, the Test Method, the value of the proof load and the limiting criteria. These aspects reside in EN 1997-3 and its national annex or in similar standards.

This document provides specifications for three types of tension tests: investigation tests, suitability tests and acceptance tests.

Two methods of testing are recognised by this document. Test Method A involves step-loaded maintained load tension tests. Test Method B involves constant displacement rate tension tests.

This document provides specifications for the experimental devices, the measurement apparatus, the test procedures, the definition and the presentation of the test results and the content of records, aiming at:

a) measuring the pull-out resistance of a soil nail or a rock bolt;

NOTE 4 A loading test performed using this document provides the pulled-out resistance along the bonded length, that will possibly differ from the pull-out resistance considered in design.

b) checking that a soil nail or rock bolt behaves as designed.

General information
Status : Published
Publication date : 2026-03
Stage : International Standard published
Edition : 1
Number of pages : 19

ISO

ISO 19177-1:2026

ISO 22477-6:2026

ISO 7729:2026

ISO 14019-1:2026

ISO 16610-22:2026

ISO 19870-1:2026

ISO 148-4:2026

ISO 7728:2026

ISO 18651:2026

ISO 18060:2026

ISO 18962:2026

ISO 1436:2026