![]() ![]() This factor takes into account whether the concrete is cracked or uncracked. This can be taken from tests taken during the concrete pour or from design info. Characteristic Cube Strength of Concrete ( f ck,cube) This can also depend on the strength of the concrete and whether the concrete is cracked or uncracked. This can be taken from the manufacturer’s info. This is the bond resistance achieved between the chemical anchor and the concrete surface. Characteristic Bond Strength (τ Rk) (N/mm 2) ![]() Standard bolt sizes are given in tables at the bottom of this page. This is the bolt diameter and can be taken from the manufacturer’s info. This is the effective depth of the anchor. Number of Anchors in Group (n) Effective Depth (h ef)
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