Hydrajaws 2000 - Testing Eye Type Anchors

12
TESTING OF EYE TYPE ANCHORS
Unscrew the bolt tester adaptor from the M12 locking adaptor in the Tester jaw and
replace it with the ringbolt adaptor clevis. Ensure that at least 2 complete clockwise turns
are made to safely engage the threads. Remove crosspin from the clevis and offer the
Tester and bridge to engage eye of the anchor in the clevis. Some adjustment will be
requiredontheswivelfeet,sothatthistisachieved,pushclevispinthroughtheclevis
and eyebolt, ensuring that the ball on the pin clicks into place, having passed through the
second fork. Commence the test as described for drop in anchors.
Note: Longer Scaffold Eyebolts used in timber frame construction can be tested. But
extra long extension legs are required – not supplied in standard kit.
ThenewNASC/CFAGuidanceNoteTG4:04*“AnchorageSystemsforScaffolding”sets
outrequirementsforPRELIMINARYTESTSofscaffoldanchors(tocheckthesuitability
and allowable loads of an anchor type in a particular base material) and PROOF TESTS
(sample tests to check that anchors have been installed correctly – to be carried out on
all jobs).
The new Proof Load testing requirement is for a tensile test of 1.5 x the design load.
The Hydrajaws Scaffold Tester Kit will test all of these types to a maximum tensile load
of 20kN. TG4:04 also describes six types of anchor most commonly used for anchoring
scaffold ties. The Hydrajaws Scaffold Tester Kit will test all of these types to a maximum
tensile load of 20kN.
* TG4:11 can be downloaded free of charge from the CFA website at www.xingscfa.co.uk
Fig 20
Test rig arrangements for:
Hex headed bolts, including
self tapping concrete screws
Socket anchors using slave
bolts. e.g. for ringbolt
Threaded
stud adaptor
SCAFFOLD TESTER KIT continued..