Specifications - State of Delaware

SECTION 265000 - INTERIOR LIGHTING FIXTURES: continued
3.02 INSTALLATION OF INTERIOR LIGHTING FIXTURES:
A. Light fixture locations indicated on electrical drawings are approximate. Architectural
reflected ceiling plans and floor plans define exact locations of light fixtures. Install interior
lighting fixtures at locations and heights as indicated, in accordance with fixture manufacturer's
written instructions, applicable requirements of NEC, NECA's "Standard of Installation,"
NEMA standards, and with recognized industry practices, to ensure that lighting fixtures fulfill
requirements.
B. Provide fixtures and/or fixture outlet boxes with hangers to properly support fixture weight.
Submit design of hangers and method of fastening, other than that which is indicated or
specified herein, for review by Contracting Officer.
C. Install flush mounted fixtures properly to eliminate light leakage between fixture frame and
finished surface.
D. Provide plaster frames for recessed fixtures installed in other than suspended grid type
acoustical ceiling systems. Brace frames temporarily to prevent distortion during handling.
E. Fasten fixtures securely to structural supports and ensure that pendant fixtures are plumb and
level. Provide individually mounted fluorescent pendant fixtures with pendants longer than
2 feet with twin stem hangers. Provide all pendent stem hangers with ball aligners and
provisions for minimum 1 inch vertical adjustment. Mount continuous rows of fixtures with an
additional stem hanger greater than the number of fixtures in the row.
F. All recessed light fixtures supported by suspended ceilings shall be securely attached (from a
minimum of 4 points) to the structural steel above by four diagonally opposite, adequately
sized safety chains. All support wire shall be same size and strength as the ceiling system
support wires.
G. Tighten connectors and terminals, including screws and bolts, in accordance with equipment
manufacturer's published torque tightening values for equipment connectors. Where
manufacturer's torquing requirements are not indicated, tighten connectors and terminals to
comply with tightening torques specified in UL 486A and the National Electrical Code.
H. Support surface mounted fixtures greater than 2 feet in length at another point in addition to the
outlet box fixture stud.
I. Provide seismic bracing and support such that the light fixtures and/or lamps will not fall
during a Seismic Zone 2A event.
3.03 FIELD QUALITY CONTROL:
A. At the Date of Substantial Completion, replace lamps in interior lighting fixtures which are
observed to be noticeably dimmed as judged by the Contracting Officer, after Contractor's use
and testing.
B. Refer to DIVISION 01 for the replacement/restoration of lamps in interior lighting fixtures
where used for temporary lighting prior to Date of Substantial Completion.
3.04 COMMISSIONING:
A. Clean interior lighting fixtures of dust, dirt, and construction debris upon completion of
installation. Clean fingerprints and smudges from lenses.
B. Protect installed fixtures from damage during the remainder of the construction period.
C. Provide new lamps at the start of building occupancy by the Contracting Officer.
D. Coordinate with SECTION 017900 - DEMONSTRATION AND TRAINING.
265000-4 DEAN265000.DOC