Complete Compiled Specification.pdf - Peck Ormsby Construction

access with minimum number of offsets in tray runs. If during construction as built conditions
occur, such that cable tray becomes inaccessible for any reason, Division 16 contractors
shall submit immediately to the architect:
1. The type and location of the obstruction including the trades involved.
2. The means proposed by Division 16 contractor to maintain accessibility.
Contractor shall proceed only if his proposal is approved. If the Contractor proceeds without
approval, the cable tray shall be relocated as directed by architect at contractors expense.
B. Install all cable tray in an accessible and visible-from-floor location. Provide a diagonal
seismic restraint brace at maximum 15 foot intervals.
C. Install tray and all accessories to provide electrical continuity throughout system. Provide flat
braided aluminum straps at questionable grounding connections.
D. Hanger rods shall be fastened to structure in an approved manner. Pullout resistance shall
have a safety factor of 4.
E. Follow manufacturer's instructions and details for separation of dissimilar metals including
steel suspension rod to aluminum splice connectors or cable tray. Provide nylon bushings at
joints, vinyl sleeve at hanger rods.
F. Maintain a minimum 12" spacing from light fixtures and electrical conduits. Maintain a 40"
spacing from electric motors. Coordinate tray location with conduit layout and motor
locations.
G. Provide at all penetrations a permanent fire stop system. The system shall consist of
reusable heat expanding pillows or bags. The fire stop material shall be approved by Factory
Mutual System and shall be Underwriters Laboratories classified. The penetration seal
method and material shall have an Underwriters Laboratories fire rating equal to the wall or
floor in which the openings are located. The penetration seal must allow future changes,
such as addition or removal of cables, with no damage to the integrity of the seal. If the wall
or floor penetration is for cable tray passage, the fire stop material shall have been tested by
Underwriters Laboratories for use with both steel and/or aluminum cable tray. The seal
method shall provide an immediate seal with no cure time. The penetration seal must be
unaffected by atmospheric conditions, water exposure or constant high humidity. The fire
seal shall be installed strictly according to the manufacturer/distributor published instructions.
END OF SECTION
SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
CABLE TRAY 16115-3