I am not aware of a rule of thumb regarding the length but generally it doesn't matter the length. If I recall correctly some codes don't require a design by a licensed professional if it is real short (such as less than 3 feet) in height but that depends on the local codes and building...
Thank you very much everyone! dhengr- this is a coupler that is threaded 1 1/2"-6 for a 1 1/2" diameter threaded rod with the same class threads but oversized 0.027" in diameter to safely receive the hot dip galvanized threaded rod (and with the coupler being hot dip galvanized as well). The...
I need to determine the Tension capacity of a Steel Coupler (Long Nut) that has oversize threads. It probably shouldn't matter but this Coupler/Nut is hot dip galvanized. Does anyone know where I can find some equations to calculate this? I have the Material Grade Specification and hence the...
