SPECIFICATION 29

SPECIFICATION 29 Sheet metal panels shall be bolted to the walls or supporting structure by assemblies consisting of a neoprene bushing cushioned between 2 steel sleeves. The outer sleeve prevents the sheet metal from cutting into the neoprene. Enlarge panel holes as required. Neoprene elements pass over the bushing to cushion the back panel horizontally.…

SPECIFICATION 28

SPECIFICATION 28 The horizontal thrust restraint shall consist of a spring element in series with a neoprene molded cup as described in specification 5 with the same deflection as specified for the mountings or hangers. The spring element shall be designed so it can be preset for thrust at the factory and adjusted in the…

SPECIFICATION 27

SPECIFICATION 27 plit Wall Seals consist of two bolted pipe halves with minimum 3/4” (19mm) thick neoprene sponge bonded to the inner faces. The seal shall be tightened around the pipe to eliminate clearance between the inner sponge face and the piping. Concrete may be packed around the seal to make it integral with the…

SPECIFICATION 26

SPECIFICATION 26 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…

SPECIFICATION 25

SPECIFICATION 25 All directional acoustical pipe anchor, consisting of two sizes of steel tubing separated by a minimum 1/2” (12mm) thick 60 durometer neoprene. Vertical restraint shall be provided by similar material arranged to prevent vertical travel in either direction. Allowable loads on the isolation material should not exceed 500 psi (.35 kg/mm2) and the…

SPECIFICATION 24

SPECIFICATION 24 lexible stainless steel hose shall have stainless steel braid and carbon steel fittings. Sizes 3” (75mm) and larger shall be flanged. Smaller sizes shall have male nipples. Minimum lengths shall be as tabulated: Flanged 3″ x 14″ (75 x 350mm) 6″ x 20″ (150 x 500mm) 12″ x 28″ (300 x 700mm) 4″…

SPECIFICATION 23

SPECIFICATION 23 Flexible spherical expansion joints shall employ peroxide cured EPDM in the covers, liners and Kevlar® tire cord frictioning. Any substitutions must have equal or superior physical and chemical characteristics. Solid steel rings shall be used within the raised face rubber flanged ends to prevent pullout. Flexible cable bead wire is not acceptable. Sizes…

SPECIFICATION 22

SPECIFICATION 22 – SRSC Seismic Rooftop Curb Curb mounted rooftop equipment shall be mounted on spring isolation curbs. The lower member shall consist of a sheet metal or structural steel sections containing adjustable and removable steel springs that support the upper floating section. The upper frame must provide continuous support for the equipment and must…

SPECIFICATION 21

SPECIFICATION 21 ibration isolation manufacturer shall furnish rectangular steel concrete pouring forms for floating and inertia foundations. Bases for split case pumps shall be large enough to pro- vide for suction and discharge elbows. Bases shall be a minimum of 1/12 of the longest dimension of the base but not less than 6” (150mm). The…

SPECIFICATION 20

SPECIFICATION 20 ibration isolation manufacturer shall furnish integral structural steel bases. Rectangular bases are preferred for all equipment. Centrifugal refrigeration machines and pump bases may be T or L shaped where space is a problem. Pump bases for split case pump shall include supports for suction and discharge elbows. All perimeter members shall be steel…