Mason SLRSO-1-1750 Spring Mount
Restrained spring mountings have an SLF mounting as described in SLF Specification, within a rigid housing that includes vertical limit stops to prevent spring extension when weight is removed. The housing will serve as blocking during erection. Installed and operating heights are equal. Restraining Bolts have a neoprene bushing between the bolt and the housing. A clearance of 1/4” (6mm) should be maintained around restraining bolts and the bushing so as not to interfere with the spring action. Limit stops should be out of contact during normal operation. Since housings will be bolted or welded in position there must be an internal isolation pad. Housing should be designed to resist all seismic forces. Mountings have an OPA preapproval from OSHPD in the state of California certifying the maximum certified horizontal and vertical load ratings. Mountings should be type SLR or SLRS as manufactured by Mason Industries, Inc.