標準號：IS 12303-1987
發布日期：1989/5/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：The criteria given in this standard are inten-ded to be applied to only the Freyssinet hinge in which reinforcement through the throat, when provided, should not exceed 2 percent of the cross-sectional area of the throat. It is assumed that the rotation takes place in the plane only.1.2 Limitation of Use—This type of hinge should not be used where:a) there is risk of collision with a structure causing damage or displacement of the hinge, andb) under any loading there is a resultant uplift on all or a part of the hinge.