TranSystems Corporation - LGM Construction

501070099 Federal Express Oakland Sort Expansion Issued for Bid 10/11
malleable iron housing clamps, steel bolts, and nuts, and sealing gasket designed, such that
internal pressure tends to increase the tightness of the seal. The entire installation, including pipe
grooving, shall be accomplished in accordance with manufacturer's published instructions. Final
tightening of bolts shall be with a torque wrench to insure equal tension in bolts. Couplings shall
be suitable for involved space temperatures and shall be as manufactured by the Victaulic
Company, or equal.
B. Push-On Joints, Soil Pipe - Joint shall be one-piece double seal compression type gasket made
specifically for joining cast iron soil pipe. The gasket shall be neoprene material, permitting joint to
flex as much as 5 degrees without loss of seal. Gasket shall be extra heavy weight class,
conforming to ASTM Specification C-564. Installation shall be in accordance with manufacturer's
published instructions. Gaskets shall be as manufactured by Tyler Pipe & Foundry Company, or
equal.
C. Solder Joints - Make up joints with 95% tin and 5% antimony (95-5) lead-free solder conforming to
ASTM B32 "Solder Metal" Grade 95TA. Cut copper tubing so ends are square and remove burrs
inside and outside. Thoroughly clean sockets of fittings and ends of tubing to remove oxide, dirt,
and grease just prior to soldering. Apply flux evenly, but sparingly, over surfaces to be joined.
Heat joints uniformly to proper soldering temperature so solder will flow to mated surfaces. Wipe
excess solder, leaving a uniform fillet around cup of fitting. Flux shall be non-acid type. Remove
composition discs from solder end valves during soldering.
D. Welded Joints - The welding of pipe joints, both as to procedures and qualification of welders, shall
be in accordance with Section IX, ASME, "Boiler and Pressure Vessel Code," unless mandatory
local codes take precedence. Ends of pipe and fittings to be joined by butt-welding shall be
beveled, cleaned to bare metal and internal diameters aligned before tack welding. Backing rings
shall be used for butt weld joints 3 inch pipe size and over, and all sizes where operating pressure
is 200 psig and above or temperature is 400 F and above. Backing rings shall be of a material
compatible with pipe material being welded.
E. Threaded Joints - Pipe screw threads shall conform to ANSI B2.1, "Pipe Threads." Ream pipe
ends and remove all burrs and chips formed in cutting and threading. Protect plated pipe and
brass valve bodies from wrench marks when making up joint. Apply thread lubricant to male
threads only.
F. Flanged Joints - Steel pipe flanges shall conform to ANSI B16.5, "Steel Pipe Flanges and Flanged
Fittings." Cast iron pipe flanges shall conform to ANSI B16.1, "Cast Iron Flanges and Flanged
Fittings." Steel flanges shall be raised face except when bolted to flat cast iron flange. Bolting for
services up to 500 deg F shall be ASTM A307 Grade B with square head bolts and heavy
hexagonal nuts conforming to ANSI B18.2.1, "Square and Hex Bolts," and B18.2.2, "Square and
Hex Nuts." Set flange bolts beyond finger tightness with an indicating torque wrench to insure
equal tension in bolts. Tighten bolts such that those 180 degrees apart or directly opposite are
torqued in sequence.
G. Gaskets for flat face flanges shall conform to requirements for "Group 1 Gaskets" in ANSI B16.5.
Unless otherwise specified, gaskets shall be 3/32 inch thick.
H. Solvent Cement Joints - Socket joints in CPVC, PVC and ABS pipe shall be made using a code
required and manufacturer's recommended solvent cement suitable for respective pipe (CPVC,
PVC, ABS, Schedule 40, Schedule 80) and conforming to ASTM 2564. Follow manufacturer's
BASIC MATERIALS AND METHODS 15050-17