substitution request - Alliance Construction Solutions

Project No.: 10145
550 15 th Street Dual Brand Hotel
12/23/2011
a. 3” and smaller: Type K soft drawn copper with wrought copper fittings,
silver brazed solder joints.
b. 4” and larger: Ductile iron, tar coated outside, cement mortar lined
inside. Full lengths of pipe shall be utilized to the greatest extent possible.
Fittings for ductile iron pipe shall be 350 psi pressure rated, tar coated
outside and cement lined inside. Utilize rubber gasket joints.
B. Sanitary Drainage and Vents – Inside Building:
1. Above Grade: CISPI 301 cast iron, no-hub type, with neoprene gaskets and 300
series stainless steel clamps; or DWV copper with wrought copper or cast brass
fittings.
2. Below Grade: For sizes 2” to 20”, ASTM A-74 service weight cast iron, hub-andspigot
type only, with neoprene compression gaskets; or, for sizes 12” and larger,
ductile cast iron with neoprene gasket joints.
C. Sanitary Sewer – Beyond 5 feet Outside Building: ASTM D-2665 SDR-35 PVC Sewer Pipe;
ductile cast iron with neoprene gaskets for sizes 12” and larger; or service weight cast iron,
hub-and-spigot type, with neoprene gaskets.
D. Roof Drainage – Inside Building:
1. Above Grade: CISPI 301 cast iron, no-hub type, with neoprene gaskets and 300
series stainless steel clamps; or schedule 40 galvanized steel pipe with galvanized
cast iron drainage fittings and threaded joints. Full lengths of pipe shall be
utilized to the greatest extent possible.
2. Below Grade: For sizes 2” to 20”, ASTM A-74 service weight cast iron, hub-andspigot
type, with neoprene compression gaskets; or, for sizes 12” and larger,
ductile cast iron with neoprene gasket joints.
E. Storm Sewer – Beyond 5 feet Outside Building: ASTM D-3034 SDR-35 PVC sewer pipe;
ductile cast iron with neoprene gasket joints for sizes 12” and larger; or service weight cast
iron soil pipe, hub-and-spigot type, with neoprene gaskets.
F. 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.
22 1116 - 8 BASIC PLUMBING PIPING