Fiberglass Cable Tray & Channel Installation Procedures
Installation Guidelines: Fiberglass Trapeze Hanging Systems
The fiberglass cable tray system offers three types of fiberglass trapeze hanging systems: back- to-back strut trapeze, single strut with open end down trapeze, and single strut with open end up trapeze. The specifications associated with each trapeze type are shown below. Back-to-Back Bonded Strut 1. Fiberglass nuts should not be over-torqued. A snug 3 to 4 ft.-lbs. is sufficient. 2. When supporting a 100 lb./ft. load, the spacing between each trapeze should not exceed ten feet. Under these conditions, each trapeze will be supporting 1000 lbs., thus yielding a support system safety factor of 2.
1” Max between material being supported and rod 1" Max between material being supported
3. When using beam clamps, only fiberglass RGBC series clamps are acceptable. This clamp provides more thread engagement than clamps designed for steel rod and load ratings are dependent on the extra thread engagement. Care should be taken to ensure that the rod is fully engaged in the clamp nut, but not over torqued (5 ft-lbs. max.). 4. Material being supported should "fit" the trapeze system as closely as possible. The spacing between the all-thread rod and the material being supported should not exceed 1".
1 / 2 ” Fiberglass all-thread rod 1/2 Fiberglass all-thread rod Back-to-back berglass strut Back-to-back fiberglass strut Two fiberglass washers Two berglass washers Two brglass nuts Two fiberglass nuts
Max. load this conguration 1,000 lbs . Max. load this conguration 1,000 lbs.
2” Minimum from hole to end of strut to prevent tear out
1” Max between material being supported and rod
1 / 2 ” Fiberglass all-thread rod
Max. load this conguration 500 lbs .
Single berglass strut
Two berglass washers
Fibrglass nut
2” Minimum from hole to end of strut to prevent tear out
1” Max between material being supported and rod
1 / 2 ” Fiberglass all-thread rod
Max. load this conguration 400 lbs .
Single berglass strut
Fiberglass washer
Fibrglass nut
2” Minimum from hole to end of strut to prevent tear out
Note: Recommended loads include a safety factor of 2 for the complete trapeze assembly
GLAS - Installation Procedures
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