substitution request - Alliance Construction Solutions

Project No.: 10145
550 15th Street Dual Brand Hotel
03/16/2012
a. Copper phosphorus – BCuP.
b. Silver – BAg
D. Gaskets for Flanged Joints: ANSI B16.21; full-faced for cast-iron flanges; raised-face for
steel flanges, unless otherwise indicated.
E. Piping Connectors for Dissimilar Non-Pressure Pipe: Elastomeric annular ring insert, or
elastomeric flexible coupling secured at each end with stainless steel clamps, sized for
exact fit to pipe ends and subject to approval by plumbing code.
F. Pipe Thread Sealant Material: Except as otherwise indicated, provide all pipe threads with
the sealant material as recommended by the manufacturer for the service.
2.08 PIPING APPLICATION:
1. Manufacturer: Subject to compliance with requirements, provide piping thread
sealant material. “Tyte-Unyte” for general use and Acorn no. 3500 for cleanouts.
A. Natural Gas Piping:
1. Above Grade:
a. Exposed locations:
i. 2” and smaller: Schedule 40 black steel pipe, beveled ends, with
150 psi malleable iron fittings and threaded joints.
ii. Larger than 2”: Schedule 40 black steel pipe with seamless steel
butt-weld fittings and welded joints.
b. Inaccessible Locations:
2. Below Grade:
i. All sizes: Schedule 40 seamless black steel pipe, beveled ends,
with socket-weld fittings same thickness as pipe, and welded
joints.
a. Within Building: Schedule 40 seamless black steel with 150 psi forged
steel fittings and welded joints. Provide piping with machine-applied
coating and wrapping in accordance with local code and utility company
requirements. Provide cathodic protection as called for on the drawings.
b. Outside of Building: Polyethylene (PE) pipe, as approved by local utility
company and code authorities having jurisdiction.
B. Space Heating Water, Chilled Water, and Condenser Water Piping:
1. 2-1/2” and smaller:
a. Schedule 40 black steel with 150 psi malleable iron threaded fittings; or
Type L copper tube, ASTM B-88, with wrought copper or bronze fittings
per ANSI B16.22, brazed or lead-free soldered.
2. 3” and larger:
23 2113 - 8 HYDRONIC PIPING