Specifications - State of Delaware

SECTION 260536 - CABLE TRAY: continued
2. Materials and Finishes: Material and finish specifications for each wire basket type are
as follows:
a. Electroplated Zinc: Straight sections shall be made from steel meeting the
minimum mechanical properties of ASTM A510 and shall be electroplated zinc in
accordance with ASTM B633 SC2.
b. Stainless Steel: Straight sections and accessories shall be made from AISI
Type 304 Stainless Steel.
C. Tubular Style Cable Runway:
1. Runway shall be ladder type with 1-1/2-inch stringer height with welded rungs.
2. Runway shall be 12 inches wide and 10 feet long with rungs spaced 9 inches on center, or
as shown on drawings.
3. Cable runway shall be Flat Black powder coat.
D. Fittings and Accessories:
1. Provide horizontal elbows, vertical elbows, horizontal tees, vertical tees, horizontal cross,
reducers, solid flanged covers, ventilated covers, peaked covers, cover clamps, metal
barrier strips, end plates, connector plates, hinged splice plates, reducing splice plates,
expansion joint plates, bonding jumpers, box connectors, cable dropouts, cable clamps,
and supports required.
2. Fittings and connector plates shall provide the same load capacity as the straight sections.
3. All fittings and accessories shall be from the cable tray manufacturer.
4. Provide warning signs with 1-1/2-inch high black letters on a yellow background that
reads: "WARNING! Not to be used as a walkway, ladder, or support for ladders or
personnel." Provide on the outside of each side of the cable tray at 10-feet intervals.
E. Supports:
1. Trapeze and center hung type supports shall utilize galvanized, manufactured framing
channels, threaded rods, beam clamps, cable tray hold down clamps, etc. Supports shall
support cable tray without noticeable deflection of support members.
2. Provide galvanized rods, anchors, inserts, clamps, spacers, shims, bolts, nuts, and
miscellaneous steel as required.
3. Supports shall be adequate to support cable tray with cables indicated plus cables
indicated for future installation (if any).
4. Supports shall be designed for Seismic Category D.
PART 3 - EXECUTION
3.01 GENERAL:
A. Install cable tray, fittings, and accessories level, plumb and as required, in accordance with
manufacturer's written instructions, applicable requirements of NEMA and NEC, and with
recognized industry standard practices to fulfill project requirements.
B. Sufficient space shall encompass cable trays to permit access for cable installation.
C. Where cable trays contain circuits of different noise levels, the horizontal and vertical spacing
between outside surfaces of the cable trays shall not be less than indicated below (unless
specified otherwise, indicated otherwise, or required otherwise by the equipment
manufacturer):
1. Noise Level 1 Circuits: Analog circuits less than 50V, digital signals less than 12V, or
telephone circuits.
2. Noise Level 2 Circuits: Analog circuits greater than 50V or digital circuits greater than
12V.
3. Noise Level 3 Circuits: 120Vac or DC circuits operating at less than 20 amperes.
260536-2 DEAN260536.DOC