scope:

This Standard establishes specifications for the execution of tension load tests where a ground anchor, as defined in EN 1537, is loaded by step (method 3) or in incremental cycles (methods 1 and 2) from a datum load to a maximum test load. The displacement of the anchor head is measured over a period of time at each step (method 3) or at maximum load in each incremental cycle (method 1). The loss of load is measured over a period of time, at maximum load after lock off, in each incremental cycle (method 3) This standard is applicable to pre-stressed anchors consisting of an anchor head, a tendon free length and a fixed tendon length bonded to the ground by grout. This standard provides specifications for three types of tension tests : investigation tests, suitability tests and acceptance tests. The standard 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. This standard shall be used in conjunction with EN 1997-1 and EN 1537.