I would like to check with regards to the underground, above ground and sprinkler piping to be used. Is there a requirements to use Galvanized piping for fire ring main hydrant system as per NFPA guide lines? Are cement lined pipes recommended as water authorities generally require ductile iron for underground pipes? As for Galvanized Iron
Fire Collars At what size pipe would a fire collar be required? I cannot find a code reference in LSC chapter 8 or IFC. I did find some commentary from the ICC but it only stated that anything greater than 3 inches, check the system.