Generic bolts often have damaged galvanizing due to field welding. Part VII chairs are typically fabricated from G60/G90 galvanized steel with specific weld requirements that preserve the coating.
: Instead of isolated chairs, a continuous ring is welded at the top of the vertical plates. This ring acts as a single structural unit that distributes the anchor bolt load more uniformly around the entire circumference of the shell. aisi e 1 volume ii part vii anchor bolt chairs better
