Rooftop Tray PM reference

Sheet G-001 · General

Rooftop cable tray: the project manager's reference

Everything a PM needs to buy, schedule, install and close out a non-penetrating rooftop cable tray built from ANDREW's rooftop cable support line. That covers the bridge kits, splices, SnapStak cover kits, step-over, hood entry and sleepers, with the Texas and San Antonio requirements layered on top.

16part numbers in the line, each with its own spec page
1 yrhardware warranty, counted from the shipment date, not the install date
0wind ratings published. You have to request one in writing
8 ftsection length for every bridge and cover kit (96 in)
ROOF MEMBRANE + APPROVED PROTECTION LAYER ① bridge kit · 8 ft ② ② splice ③ step-over ④ hood entry ⑤ BUILDING ⑤ sleepers (3 per kit)
How the parts go together: ① bridge kits (or SnapStak cover kits) sit on ⑤ sleepers over membrane protection, joined by ② splices. A ③ step-over goes wherever people cross, and the run ends at a ④ hood entry. This is a schematic, not to scale.

Start here

Products & specs →All 16 parts with dimensions, weights, contents and the data conflicts to resolve before you order. Installation →The sequence from survey to closeout, with handling weights and the roof-warranty traps. Grounding & bonding →The full grounding solution: jumpers, bonds to the roof ground, coax kits, materials, tests and the Texas notes. Turns & elevation →How a 90° is made (two 45° splices), how to get over a curb, and which parts the kits leave out. Warranty →What ANDREW covers, what voids it, the 30-day claim clock and the 15-day transfer notice. Texas / San Antonio →2024 ICC codes and 2023 NEC in San Antonio, wind, hail, heat, licensing, historic districts. PM checklist →Submittals, procurement, mobilization, QA and closeout, with an RFI list ready to send. Estimator →Cable count and run length to sections, splices, sleepers and dead load.

Pick the size

Pick by cable count: smallest kit that carries the runs plus your growth allowance
Coax runsBridge kit (8 ft)SpliceExtensionSnapStak cover kit (8 ft)
up to 4MT-F1542-11 20 in wide · 9.6 lb/ftMT-F1573-11MT-F1703RT-CB4D 20 in wide
up to 8MT-F1543 30 in wide · 14.0 lb/ftMT-F1574MT-F1704RT-CB8D 28 in wide
up to 12MT-F1595 35 in wide · 22.5 lb/ftMT-F1597none listedRT-CB12D 36 in wide

Bridge kits carry the coax in the kit's own channel. Use the SnapStak cover kits when the runs are already in SnapStak snap-in hangers, which you order separately. Both families are 8 ft long and non-penetrating, and both ship three sleepers per kit.

The seven things that sink these jobs

  1. Voiding the roof warranty. The tray's own warranty is one year, but the roof's can run for decades. Get the roofing manufacturer's (or roofing contractor of record's) written approval of the layout, the pad material and any penetration before mobilizing. → roof coordination
  2. No wind rating. None of the 16 sheets publishes one. A non-penetrating tray resists uplift by its own weight, so your engineer needs ANDREW's rating, or a ballast or attachment design, to sign off. → San Antonio wind
  3. The warranty clock starts at shipment. Material that sits in a yard for eight months has four months of coverage left by the time it's installed. → warranty
  4. Field modifications. Cutting or drilling galvanized sections that ANDREW hasn't authorized in writing falls under exclusion §8(g). → exclusions
  5. Turn parts aren't in the box. Bridge kits ship with no splices. Every joint, and two per 90° turn, is a separate special-order, non-returnable part. → turns
  6. A floating tray. Plastic sleepers insulate the tray, and the kits include no grounding hardware. An unbonded tray fails inspection and draws lightning damage into the building. → grounding
  7. Spec-sheet conflicts. Two pad sheets give two different thicknesses, and ANDREW's extension-kit sheets don't say what the kits do. Send an RFI before you lock the BOM. → conflicts