Complete Compiled Specification.pdf - Peck Ormsby Construction

sealed watertight with flexible waterproof silicone caulking. Seal around sleeves and pipe in sleeves to make
watertight.
PIPE LOCATION AND ARRANGEMENT:
Under no circumstances shall plastic piping or ducting materials be run inside of supply or return air plenums.
No water supply piping inside the building shall be placed in direct contact with the earth. Buried water piping
shall be placed in split tile or PVC pipe to keep pipe from direct contact with ground.
Unless otherwise noted on the drawings, all water piping shall be kept out of concrete floor slabs.
All piping shall be properly racked and supported to run straight and true.
All changes in direction shall be made with approved fittings. Pipes shall not be bent to change direction.
All piping shall be racked and run to facilitate maintenance work. Under no circumstances shall valves, shock
absorbers, drip traps, or piping specialties be installed in a "closed space" without proper access provided for
future maintenance. See "Access Doors" section of specifications.
NOTE: All piping shall be capped or plugged at the end of each work shift and when not being
extended, to prevent the entry of rocks and debris.
Any time lines are broken or disconnected, they shall be capped immediately after flushing to remove rock and
debris from pipes. If rocks or other foreign materials are found in the system after it has been closed, the
contractor shall stand the expense of their removal.
All valves, piping, and equipment to be installed so as to permit disassembly for maintenance purposes.
Provide drain valves at all low points in piping systems. Run to floor drain where possible, otherwise provide 3/4"
hose connections.
PIPE JOINING:
All steel pipe under 2" in size shall be joined by screwed connections. Heating hot water, chilled water,
condenser water, glycol, and oil piping may be welded if pipe size is over 2" in size.
Welded ends shall be plain beveled. Welding fittings must be employed if welding is used. Small (1-1/2" and
smaller) branch connections may be made with Weldolets or Thredolets provided the main is at least 2"
diameter, and not less than two pipe sizes larger than the branch. Where these connections are used, the pipe
opening in the main shall be cut to insure a full inside pipe diameter at the branch connection. Slag and spelter
resulting from the hole cutting shall be removed from the main piping.
All joinings shall be made to maintain the full metal strength of the pipe, with neat and workmanlike appearance.
All piping must be perfectly clean before the system is filled.
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDTION March 2, 2009
BASIC MATERIALS & METHODS 15050-3