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• FIRE AND SMOKE PROTECTION FEATURES partitions shall comply with Sections 713.3.1 through 713.3.3. Lion is constructed with individual non- Penetrations in smoke barrier walls shall also comply with communicating stud cavities; Section 713.5. 1.2. By a horizontal distance of not less than the 713.3.1 Through penetrations. Through penetrations of depth of the wall cavity where the wall cav- fire-resistance-rated walls shall comply with Section ity is filled with cellulose loose-fill, 713.3.1.1 or 713.3.1.2. rockwool or slag mineral wool insulation; Exception: Where the penetrating items are steel, fer- 1.3.By solid fireblocking in accordance with rous or copper pipes, tubes or conduits, the annular Section 717.2.1; space between the penetrating item and the fire-resin- 1 4. By protecting both outlet boxes with listed tance-rated wall is permitted to be protected as follows: putty pads;or 1. In concrete or masonry walls where the penetrat- L5. By other listed materials and methods. ing item is a maximum 6-inch(152 nun)nominal diameter and the area of the opening through the 2. Membrane penetrations by listed electrical boxes wall does not exceed 144 square inches (0.0929 of any material, provided such boxes have been m2),concrete,grout or ortar is permitted where it tested for use in fire-resistance-rated assemblies is installed the full thickness of the wall or the and are installed in accordance with the instmc- thickness required to maintain the fire-resistance lions included in the listing. The annular space rating;or between the wall membrane and the box shall not 2. The material used to fill the annular space shall exceed Vs inch (3.1 rum) unless listed otherwise. prevent the passage of flame and hot gases suffi- Such boxes on opposite sides of the wall or parti- cient to ignite cotton waste when subjected to tion shall be separated by one of the following: ASTM E 119 or UL 263 time-temperature fire 2.1. By the horizontal distance specified in the conditions under a minimum positive pressure dif- listing of the electrical boxes; ferential of 0.01 inch(2.49 Pa)of water at the loca- 2.2. By solid fireblocking in accordance with tion of the penetration for the time period Section 717.2.1; equivalent to the fire-resistance rating of the con- struction penetrated. 2.3. By protecting both boxes with listed putty 41111, 713.3.1.1 Fire-resistance-rated assemblies. Penetra- pads;or tions shall be installed as tested in an approved fire-resin- 2.4. By other listed materials and methods. ante-rated assembly. 3. Membrane penetrations by electrical boxes of any 713.3.1.2 Through-penetration firestop system. size or type, which have been listed as part of a Through penetrations shall be protected by an approved wall opening protective material system for use in penetration firestop system installed as tested in actor- fire-resistance-rated assemblies and are installed dance with ASTM E 814 or UL 1479,with a minimum in accordance with the instructions included in the positive pressure differential of 0.01 inch (2.49 Pa) of listing. water and shall have an F rating of not less than the 4. Membrane penetrations by boxes other than elec- required fire-resistance rating of the wall penetrated. trical boxes,provided such penetrating items and 713.3.2 Membrane penetrations.Membrane penetrations the annular space between the wall membrane and shall comply with Section 713.3.1. Where walls or parti- the box, are protected by an approved membrane tions are required to have a fire-resistance rating,recessed penetration firestop system installed as tested in fixtures shall be installed such that the required fue-resin- accordance with ASTM E 814 or UL 1479,with a tance will not be reduced. minimum positive pressure differential of 0.01 inch(2.49 Pa)of water,and shall have an F and T Exceptions: rating of not less than the required fire-resistance I. Membrane penetrations of maximum 2-hour rating of the wall penetrated and be installed in fire-resistance-rated walls and partitions by steel accordance with their listing. electrical boxes that do not exceed 16 square 5. The annular space created by the penetration of an inches(0.0103 m2)in area,provided the aggregate automatic sprinkler, provided it is covered by a area of the openings through the membrane does metal escutcheon plate. not exceed 100 square inches(0.0645 m2)in any 100 square feet(9.29 m2)of wall area.The annular 713.3.3 Dissimilar materials.Noncombustible penetrating space between the wall membrane and the box items shall not connect to combustible items beyond the shall not exceed Vs inch(3.1 mm).Such boxes on point of fnestopping unless it can be demonstrated that the opposite sides of the wall or partition shall be sepa- fire-resistance integrity of the wall is maintained. ` rated by one of the following: 713.4 Horizontal assemblies. Penetrations of a floor, 1.1. By a horizontal distance of not less than 24 floor/ceiling assembly or the ceiling membrane of a roof/ceil- inches (610 mm) where the wall or parti- ing assembly not required to be enclosed in a shaft by Section 2010 OREGON STRUCTURAL SPECIALTY CODE 117