Ceiling Grid Specifications

Part 1 - GENERAL

1.01 Section Includes

Provide metal suspension system for lay-in acoustical panel ceiling.

1.02 Related Sections

A. Section 09120 - Ceiling Suspension Systems

B. Section 09646 - Special Ceiling Surfaces

C. Section 13020 - Integrated Ceilings

D. Section 13080 - Sound, Vibration, and Seismic Control

E. Section 15500 - Heating, Ventilating, and Air Conditioning

F. Section 16500 - Lighting

1.03 References

A. American Society for Testing and Materials (ASTM)

1. C635 - Standard Specification for the Manufacture, Performance, and Testing of Metal Suspension Systems for Acoustical Tile and Lay-in Panel Ceilings.

2. C636 - Standard Practice for INstallation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels.

3. E 119 - Standard Methods of Fire Tests of Building Construction and Materials.

4. E 580 - Standard Practice for Application of Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels in Areas Requiring Seismic Restraint.

1.04 Submittals

A. Product Data Guide

B. Samples: 10 inch long samples of main runner and cross tee with couplings.

Part 2 - PRODUCTS

2.01 Manufacturers

InterSource Specialties Company LLC double web (Intermediate) (Heavy) Duty (Fire) (Non-fire) Rated Ceiling Suspension System.

2.02 Suspension System Components

A. Main Runners:

1. Manufactured from (0.015) (0.020) inch thick steel 15/16 inch wide by 1 1/2 inches high by (96) (120) (144) inches long with factory punched cross tee slots, hanger holes, and integral bayonet-style end couplings.

2. Components are fabricated from commercial quality hot dipped galvanized steel.

3. Capped with prefinished hot dipped galvanized steel affixed to 15/16 inch wide wide flange (color to be selected by architect).

4. Manufactured with fire expansion reliefs on fire rated components.

B. Cross Tees:

1. Manufactured from 0.015 inch thick steel 15/16 inch wide by (1 1/2 inches) (1 inch) high by (12) (24) (36) (48) (60) (72) (96) inches long with factory punched cross tee slots and hanger holes and stepped ends.

2. Components are fabricated from commercial quality, hot dipped galvanized steel and capped identical to main runner.

3. Manufactured with factory attached integral couplings on component ends.

C. Perimeter Treatment Components:

1. Angle Moldings: Manufactured from 0.020 inch thick hot dipped galvanized steel (3/4) (15/16) (7/8) inch wide by (15/16) (7/8) (2) inch high by (144) (120) (96) inches long with hemmed edges finished identical to main runners and cross tees.

2. Shadow Line Moldings: Manufactured from 0.020 inch thick steel with 3/4 inch by 3/4 inch flanges, with 3/8 inch by 3/8 inch recess, and heemed edges. Finished identical to main runner and cross tees.

Part 3 - EXECUTION

3.01 Examination

Examine area receiving suspension system to identify conditions, which will adversely affect installation. Do not begin installation until adverse conditions have been remedied.

3.02 Installation

A. Main Runners: Installed (36) (48) (72) (96) inches on center, by direct suspension from existing structure, with not less than 12 guage steel hanger wires spaced (48) (60) inches on center along main runner length. Wrap hanger wires tightly 3 full turns at each end.

B. Cross Tees:

1. Installed perpendicular to main runners (12) (24) (36) (48) (60) (72) (96) inches on center to form _____by_____ modules.

2. Installed perpendicular to module forming cross tees to form _____by_____ modules.

3. Installed adjacent to each unsupported side of recessed fixtures.

C. (Angle) (Shadow Line) moldings: Installed on vertical surfaces, intersecting suspension components, by appropriate method in accordance with industry accepted practice.

D. Additional Hanger WiresL Wrapped tightly 3 full turns to structure and component at locations where imposed loads could cause deflection exceeding 1/360 span.