Thor Helical Stainless Steel Crack Stitching Bars have a tensile strength that is double that of conventional rebar and a spiral twist that permits a degree of torsional yield within elastic limits and provides an excellent key for bonding into mortars.
Anchored across fractures, the Thor Helical Crack Stitching Bars progressively accumulate building loads and disperse them back into the structure, spreading loads and strengthening cracked walls. This effective masonry stitching repair provides resilience against further cracking with minimal cost and little disruption.
Typical Performance Loads in 35-40mm slot at 400mm embedment length (taken from CE Mark Testing).
BS EN 845-1:2013 National Annex NA states that the bars need to provide an equivalent performance to the prescriptive 30mm x 5mm lateral restraint straps and the tension straps should have a declared tensile load capacity of at least 8kN.
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