ipe guides shall consist of a telescopic arrangement of two sizes of steel tubing separated by a minimum 1/2” (12mm) thickness of 60 durometer neoprene. The height of the guides shall be preset with a shear pin to allow vertical motion due to pipe expansion or contrac- tion. Shear pin shall be removable and reinsertable to allow for selection of pipe movement. Guides shall be capable of ±15/8” (41mm) motion, or to meet location requirements. Pipe guides shall be type VSG as manufactured by Mason Industries, Inc.