outlet box plaster rings for gyp board walls

#OUTLET BOX PLASTER RINGS FOR GYP BOARD WALLS CODE#

The aggregate surface area of the boxes should not exceed 100 sq in. The surface area of individual metallic outlet or switch boxes should not exceed 16 sq in. The metallic outlet or switch boxes should be securely fastened to the studs and the opening in the wallboard facing should be cut so that the clearance between the box and the wallboard does not exceed 1/8 in. These walls should have gypsum wallboard facings similar to those shown in Design Nos. Listed single and double gang metallic outlet and switch boxes with metallic or nonmetallic cover plates may be used in bearing and nonbearing wood stud and steel stud walls with ratings not exceeding 2 h. Nonmetallic boxes should not be installed on opposite sides of walls or partitions of staggered stud construction unless Classified for use in such constructions. The information provided for each Classification includes the model numbers for the Classified products, a description of the rated assemblies, the spacing limitations for the boxes and the installation details. Outlet Boxes and Fittings Classified for Fire Resistance ( CCN+and+GUIDEINFO'>CEYY ) includes Classifications for nonmetallic outlet and switch boxes for use in wall or partition assemblies.

#OUTLET BOX PLASTER RINGS FOR GYP BOARD WALLS CODE#

ICE, the code section posted above item 1 limits the amount of unprotected electrical penetrations where as item 2 refers to installed as listed the manufacturer installation for listed steel boxes is U.L. Note that exceptions 1.3 and 2.2 state 'solid fireblocking' which eliminates #7 of the choices of fireblocking material.Ĭlick to expand. Putty pads are an option that I discourage because they tend to relax and become loose. The integrity of fireblocks shall be maintained. Batts or blankets of mineral wool, mineral fiber or other approved materials installed in such a manner as to be securely retained in place.ħ17.2.1.4 Fireblocking integrity.

One-fourth-inch (6.4 mm) cement-based millboard.ħ. One thickness of 0.75-inch (19.1 mm) particleboard with joints backed by 0.75-inch (19 mm) particleboard.Ħ. One thickness of 0.719-inch (18.3 mm) wood structural panels with joints backed by 0.719-inch (18.3 mm) wood structural panels.Ĥ. Two thicknesses of 1-inch (25 mm) nominal lumber with broken lap joints.ģ. Fireblocking shall consist of the following materials:Ģ.

By other listed materials and methods.ħ17.2.1 Fireblocking materials. By protecting both boxes with listed putty pads orĢ.4. By solid fireblocking in accordance with Section 717.2.1 Ģ.3. By the horizontal distance specified in the listing of the electrical boxes Ģ.2. Such boxes on opposite sides of the wall or partition shall be separated by one of the following:Ģ.1. The annular space between the wall membrane and the box shall not exceed 1/8 inch (3.1 mm) unless listed otherwise. Membrane penetrations by listed electrical boxes of any material, provided such boxes have been tested for use in fire-resistance-rated assemblies and are installed in accordance with the instructions included in the listing. By protecting both outlet boxes with listed putty pads orġ.5. By solid fireblocking in accordance with Section 717.2.1 ġ.4. By a horizontal distance of not less than the depth of the wall cavity where the wall cavity is filled with cellulose loose-fill, rockwool or slag mineral wool insulation ġ.3. By a horizontal distance of not less than 24 inches (610 mm) where the wall or partition is constructed with individual noncommunicating stud cavities ġ.2. Such boxes on opposite sides of the wall or partition shall be separated by one of the following:ġ.1. The annular space between the wall membrane and the box shall not exceed 1/8 inch (3.1 mm). Membrane penetrations of maximum 2-hour fire-resistance-rated walls and partitions by steel electrical boxes that do not exceed 16 square inches (0.0103 m2) in area, provided the aggregate area of the openings through the membrane does not exceed 100 square inches (0.0645 m2) in any 100 square feet (9.29 m2) of wall area. Where walls or partitions are required to have a fire-resistance rating, recessed fixtures shall be installed such that the required fire-resistance will not be reduced.ġ. Membrane penetrations shall comply with Section 713.3.1.

2009 IBC but I am in California so your code may be different.ħ13.3.2 Membrane penetrations.

Outlet box plaster rings for gyp board walls