Pull out loads are for M200 cement concrete. The recommended distance between the edge of any platform and the drilling position is a maximum of six times the diameter of the hole. Factor of safety recommended is of : Uniform load = 4,Shock loads = 8. Non standard sizes and H.T.Bolts can be made on request. SWL is with Factor of safety of 1 : 4 for static loads. Right to alter design dimensions remains with the manufacturer.