Flatness and tolerances in HSFG bolted connections
Mr J. Renshaw of Sale, Cheshire, raises the question of tolerances in HSFG bolted connections within the context of overall construction tolerances for steel frames:
Questions have arisen recently relating to the fit of welded endplates when employing high strength friction grip bolts to develop fixed ended joints. The questions are, what are the flatness tolerances for the endplate and what is the maximum gap which can be tolerated between the contact surfaces? Each of these questions, taken at face value, seems very innocent and simple to answer but, when given some thought, they are
not as innocuous and simple as one might think.