Complete Compiled Specification.pdf - Peck Ormsby Construction

Materials and construction shall be as specified for water valves sizes 1-1/2-inch and smaller.
On sizes 3/4-inch and smaller ends may be sweat or compression type.
Each station shall be complete with quick disconnect valves and safety shut-off valves, metal identification tag
on chain giving pipe size, meter series, station identification, and meter reading at specified flow rate. Metering
stations shall be selected so that design flow rate shall be between 10 and 40 inches of water pressure
differential with permanent pressure loss of not more than 25% of indicated flow rate differential pressure.
The calibrated flow metering valves shall be selected to deliver the rated flows at the mid-point of their set-point
range.
Venturi Flow Metering System shall be by Barco Engineering Company or Robertson. Calibrated orifice system
shall be Bell & Gossett, Armstrong, Flow-Set, or Taco.
GAS PRESSURE REGULATORS:
Furnish and install, as required, approved type gas pressure regulators in gas piping ahead of appliance and
equipment. Regulators located outside of building shall have weatherproof vent with bugproof screen.
Regulators located inside of building shall be vented thru the roof with approved thread on bug screen.
Approved manufacturers of gas regulators are Fisher and Reliance.
V-BELT DRIVES:
Capacity of V-belt drives at rated RPM shall be not less than 150 percent of motor nameplate horsepower rating.
V-belt drive combinations shall be limited to A, B, C, and fractional horsepower belts. 3V, 5V, and 8V belts and
sheaves shall not be used.
Drives requiring single belt application shall be of the adjustable pitch type. Multiple belt drives shall be of the
non-adjustable type. All fixed pitch sheaves, including single groove fan sheaves, shall be of the bused type.
Fixed bore sheaves will not be acceptable for non-adjustable pitch sheaves.
All belt drives shall be fitted with belt guards.
MAGNETIC STARTERS:
Contractor furnishing pre-wired "packaged equipment" with 1/2 HP and larger motors shall furnish
factory-mounted magnetic starters. Magnetic starters shall provide both overload and undervoltage protection
and shall have integral hand-off-auto switch, auxiliary contacts, and pilot. All motors installed under this contract
shall have a disconnect switch in the immediate vicinity of the motor. Starters on three phase motors shall
protect all three legs of the circuit. Starters to be Cutler-Hammer, Square "D", or Westinghouse.
Starters for all motors on other than "packaged equipment" will be furnished and installed by the electrical
contractor.
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDTION March 2, 2009
BASIC MATERIALS & METHODS 15050-15