Is there an appropriate anchor to fix props to a reinforced concrete masonry wall to temporary prop a precast panel from? i.e. an anchor where an increase in load will result in an increasing wedging force, which has design capacities when anchored in concrete masonry?
Concrete masonry is reinforced, solid filled 200 series block.
Hi Grant,
Currently, New Zealand lacks specific guidelines for post-installed anchors in concrete-filled masonry. However, American codes such as AC01 and AC106 provide evaluations and design methods for chemical and mechanical anchors in various masonry substrates. In the absence of local NZ guidelines, we can refer American standards as an alternative solution. HUS4 screw anchor appears to be the most practical option, but unfortunately, we do not have test data for concrete masonry walls. Hence an engineering judgment is required. The best references available are linked below and are based on American standards.
https://ask.hilti.com/article/changes-to-post-installed-anchor-design-into-masonry-base-materials/j6nn84
https://viewer.joomag.com/post-installed-anchors-in-masonry-us-english/0966343001703018814?short&
Regards,
Neeraja Rajendran
Field Engineer