final bid specs 09328.pdf - Freese and Nichols, Inc.

D. Install piping to allow for expansion and contraction without stressing the pipe, joints, or
connected equipment.
E. Slope piping and arrange systems to drain at low points.
F. Die cut screw joints with full cut standard taper pipe threads with approved non-toxic joint
compound applied to male threads only.
G. In steel piping, main sized saddle branch connections or direct connection of branch lines to
the mains will be permitted if the main is one pipe size larger than the branch line for up to 6"
diameter mains and if the main is two pipe sizes larger than the branch for 8" and larger
mains. Do not project branch pipes inside the main.
H. Do not penetrate building structural members unless indicated to do so or without the specific
approval of the Engineer. When cutting is approved, the actual size of holes shall be no
larger than the diameter of the pipe plus 1/2" clearance.
I. Provide sleeves when penetrating floors and walls.
J. Seal pipe and sleeve penetration to achieve fire resistance equivalent to rating of the wall or
floor penetrated.
K. Prepare pipe, fittings, supports, and accessories for finish painting. Where pipe support
members are welded to structural building framing, scrape, brush clean, and apply one (1)
coat of zinc rich primer to welding. Provide finish painting in accordance with Division 9,
PAINTING. Color shall be Red.
L. On main water supply piping below grade, install steel rod pipe clamps at the 90 degree bend
from horizontal to vertical riser. Provide approved thrust restraint systems.
M. Support horizontal piping from the structure using ferrous pipe hangers for ferrous pipe and
copper hangers for copper pipe and all-thread steel rods (or brass for copper). Provide pipe
hangers capable of supporting five (5) times the weight of the water-filled piping plus 250
pounds. The maximum spacing of hangers shall be not greater than 10' for pipe sizes up to
1-1/4" and 12' for larger pipe sizes. Supports for non-metallic pipe shall be in accordance
with the manufacturer's requirements.
N. Support risers at the ground level and not less than each second floor in multi-floor
installations.
O. Inspector's test piping shall not be less than 1" diameter and each location shall be equipped
with a globe valve.
3.03 VALVE INSTALLATION
A. Install valves with stems upright or horizontal, not inverted.
B. Provide gate valves or butterfly valves for shut-off or isolating service.
C. Provide drain valves at main shut-off valves and at low points of piping and apparatus.
3.04 FIELD QUALITY CONTROL
A. Perform testing required by NFPA 13 and regulatory authorities. Include the cost of such
testing in the proposal.
Facility Fire Suppression Water Service Piping 21 11 00 - 5
DPR09328