抄録
A series of experimental study to investigate the bending strength and flexibility of steel sprinkler pipe through static loading tests, are carried out. These pipe systems don’t adopt flexible joints. To investigate the aging effect, aged pipes are tested and compared with new pipes. Moreover, to specify the service limit is lost due to leakage of water, the pipes subjected to load are filled with compressed air, and the air pressure is also measured together with the load and deformation. Based on the above experimental study, a simple way to approximate the failure deformation and load is proposed.