substitution request - Alliance Construction Solutions

Project No.: 10145
550 15 th Street Dual Brand Hotel
03/16/2012
3/4 to 1-1/4 (horizontal) 6 3/8
1-1/2 to 3 (horizontal) 10 1/2
3-1/2 to 5 (horizontal) 12 5/8
All sizes (vertical) every floor level at spacing and not greater than 15 feet.
2. Copper Tubing:
3.05 PIPE JOINT CONSTRUCTION:
SIZE (IN. O.D.) SPACING IN FEET MIN. ROD SIZE-
INCHES
1/2 (horizontal) 4 3/8
5/8 to 1-1/4 (horizontal) 6 3/8
1/2 to 2 (horizontal) 8 1/2
1/2 to 4 (horizontal) 10 5/8
All sizes (vertical) to be supported at every floor level at spacing indicated and not
greater than 10 feet.
A. Welded Joints: Comply with the requirements in ASME Boiler and Pressure Vessel Code,
Section IX.
B. Threaded Joints: Conform to ANSI 21.20.1, tapered pipe threads for field cut threads.
Join pipe, fittings, and valves as follows:
1. Note the internal length of threads in fittings or valve ends, and proximity of
internal seat or wall, to determine how far pipe should be threaded into joint.
2. Align threads at point of assembly.
3. Apply appropriate tape or thread compound to the external pipe threads.
4. Assemble joint to appropriate thread depth. When using a wrench on valves
place the wrench on the valve end into which the pipe is being threaded.
5. Damaged Threads: Do not use pipe with threads which are corroded or
damaged. If a weld opens during cutting or threading operations, that portion of
pipe shall not be used.
6. Below grade piping shall be all welded joints, not threaded joints below grade
unless noted otherwise (i.e. , tank bushing connection in sump).
C. Flanged Joints: Align flanges surfaces parallel. Assemble joints by sequencing bolt
tightening to make initial contact of flanges and gaskets as flat and parallel as possible.
Use suitable lubricants on bolt threads. Tighten bolts gradually and uniformly to
appropriate torque specified by the bolt manufacturer.
D. Brazed Joints: Comply with the procedures contained in the AWS "Brazing Manual."
1. WARNING: Some filler metals contain compounds which produce highly toxic
fumes when heated. Avoid breathing fumes. Provide adequate ventilation.
2. CAUTION: Remove stems, seats, and packing of valves, and accessible internal
parts of piping specialties before brazing.
3. Fill the tubing and fittings during brazing with an inert gas (nitrogen or carbon
dioxide) to prevent formation of scale.
4. Heat joints to proper and uniform temperature.
23 1113 - 10 FACILITY FUEL-OIL PIPING