This practice establishes two procedures , procedure A (cyclic) and procedure B (static) , for obtaining a hydrostatic design basis (HDB) or a pressure design basis (PDB) for fiberglass piping products , by evaluating strength-regression data derived from testing pipe or fittings or both of the same materials and construction , either separately or in assemblies. Both glass-fiber-reinforced thermosetting-resin pipe (RTRP) and glass-fiber-reinforced polymer mortar pipe (RPMP) are fiberglass pipe.