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Home My WebLink About008-A02 Fire Safety Notes• • • • R302.5 DWELLING-GARAGE OPENING AND PENETRATION PROTECTIONOPENINGS AND PENETRATIONS THROUGH THE WALLS OR CEILINGS SEPARATING THE DWELLING FROM THE GARAGE SHALL BE IN ACCORDANCE WITH SECTIONS R302.5.1 THROUGH 302.5.3.R302.5.1 OPENING PROTECTION = OPENINGS FROM A PRIVATE GARAGE DIRECTLY INTO A ROOM USED FOR SLEEPING PURPOSES SHALL NOT BE PERMITTED. OTHER OPENINGS BETWEEN THE GARAGE AND RESIDENCE SHALL BE EQUIPPED WITH SOLID WOOD DOORS NOT LESS THAN 13/8 INCHES (35 MM) IN THICKNESS, SOLID OR HONEYCOMB-CORE STEEL DOORS NOT LESS THAN 13/8 INCHES (35 MM) THICK, OR 20-MINUTE FIRE-RATED DOORS, EQUIPPED WITH A SELF-CLOSING DEVICE OR AUTOMATIC-CLOSING DEVICE. .R302.5.2 DUCT PENETRATION = DUCTS IN THE GARAGE AND DUCTS PENETRATING THE WALLS OR CEILINGS SEPARATING THE DWELLING FROM THE GARAGE SHALL BE CONSTRUCTED OF A MINIMUM NO. 26 GAGE (0.48 MM) SHEET STEEL OR OTHER APPROVED MATERIAL AND SHALL NOT HAVE OPENINGS INTO THE GARAGE.R302.5.3 OTHER PENETRATIONS = PENETRATIONS THROUGH THE SEPARATION REQUIRED IN SECTION R302.6 SHALL BE PROTECTED AS REQUIRED BY SECTION R302.11, ITEM 4. • R302.4.2 MEMBRANE PENETRATIONS MEMBRANE PENETRATIONS SHALL COMPLY WITH SECTION R302.4.1. WHERE WALLS ARE REQUIRED TO HAVE A FIRE-RESISTANCE RATING, RECESSED FIXTURES SHALL BE INSTALLED SO THAT THE REQUIRED FIRE-RESISTANCE RATING WILL NOT BE REDUCED.EXCEPTIONS: 1. MEMBRANE PENETRATIONS OF NOT MORE THAN 2-HOUR FIRE-RESISTANCE-RATED WALLS AND PARTITIONS BY STEEL ELECTRICAL BOXES THAT DO NOT EXCEED16 SQUARE INCHES (0.0103 M2) IN AREA PROVIDED THAT THE AGGREGATE AREA OF THE OPENINGS THROUGH THE MEMBRANE DOES NOT EXCEED 100SQUARE INCHES (0.0645 M2) IN ANY 100 SQUARE FEET (9.29 M2) OF WALL AREA. THE ANNULAR SPACE BETWEEN THE WALL MEMBRANE AND THE BOX SHALLNOT EXCEED 1/8 INCH (3.1 MM). SUCH BOXES ON OPPOSITE SIDES OF THE WALL SHALL BE SEPARATED BY ONE OF THE FOLLOWING:1.1. BY A HORIZONTAL DISTANCE OF NOT LESS THAN 24 INCHES (610 MM) WHERE THE WALL OR PARTITION IS CONSTRUCTED WITH INDIVIDUALNONCOMMUNICATING STUD CAVITIES.1.2. 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.1.3. BY SOLID FIREBLOCKING IN ACCORDANCE WITH SECTION R302.11.1.4. BY PROTECTING BOTH BOXES WITH LISTED PUTTY PADS.1.5. BY OTHER LISTED MATERIALS AND METHODS.2. MEMBRANE PENETRATIONS BY LISTED ELECTRICAL BOXES OF ANY MATERIALS PROVIDED THAT THE BOXES HAVE BEEN TESTED FOR USE IN FIRE-RESISTANCERATEDASSEMBLIES AND ARE INSTALLED IN ACCORDANCE WITH THE INSTRUCTIONS INCLUDED IN THE LISTING. THE ANNULAR SPACE BETWEEN THE WALLMEMBRANE AND THE BOX SHALL NOT EXCEED 1/8 INCH (3.1 MM) UNLESS LISTED OTHERWISE. SUCH BOXES ON OPPOSITE SIDES OF THE WALL SHALL BESEPARATED BY ONE OF THE FOLLOWING:2.1. BY THE HORIZONTAL DISTANCE SPECIFIED IN THE LISTING OF THE ELECTRICAL BOXES.2.2. BY SOLID FIREBLOCKING IN ACCORDANCE WITH SECTION R302.11.2.3. BY PROTECTING BOTH BOXES WITH LISTED PUTTY PADS.2.4. BY OTHER LISTED MATERIALS AND METHODS.3. THE ANNULAR SPACE CREATED BY THE PENETRATION OF A FIRE SPRINKLER PROVIDED THAT IT IS COVERED BY A METAL ESCUTCHEON PLATE.4. CEILING MEMBRANE PENETRATIONS BY LISTED LUMINAIRES OR BY LUMINAIRES PROTECTED WITH LOSTED MATERIALS THAT HAVE BEEN TESTED FOR USE IN FIRE-RESISTANCE RELATED ASSEMBLIES AND ARE INSTALLED IN ACCORDANCE WITH THE INSTRUCTIONS INCLUDED IN THE LISTING. R302.4.1 THROUGH PENETRATIONSTHROUGH PENETRATIONS OF FIRE-RESISTANCE-RATED WALL OR FLOOR ASSEMBLIES SHALL COMPLY WITH SECTION R302.4.1.1 OR R302.4.1.2.EXCEPTION: WHERE THE PENETRATING ITEMS ARE STEEL, FERROUS OR COPPER PIPES, TUBES OR CONDUITS, THE ANNULAR SPACE SHALL BE PROTECTED AS FOLLOWS:1. IN CONCRETE OR MASONRY WALL OR FLOOR ASSEMBLIES, CONCRETE, GROUT OR MORTAR SHALL BE PERMITTED WHERE INSTALLED TO THE FULL THICKNESS OFTHE WALL OR FLOOR ASSEMBLY OR THE THICKNESS REQUIRED TO MAINTAIN THE FIRE-RESISTANCE RATING, PROVIDED THAT BOTH OF THE FOLLOWING ARECOMPLIED WITH:1.1. THE NOMINAL DIAMETER OF THE PENETRATING ITEM IS NOT MORE THAN 6 INCHES (152 MM).1.2. THE AREA OF THE OPENING THROUGH THE WALL DOES NOT EXCEED 144 SQUARE INCHES (92 900 MM2).2. THE MATERIAL USED TO FILL THE ANNULAR SPACE SHALL PREVENT THE PASSAGE OF FLAME AND HOT GASES SUFFICIENT TO IGNITE COTTONW ASTE WHERESUBJECTED TO ASTM E 119 OR UL 263 TIME TEMPERATURE FIRE CONDITIONS UNDER A POSITIVE PRESSURE DIFFERENTIAL OF NOT LESS THAN 0.01 INCH OFWATER (3 PA) AT THE LOCATION OF THE PENETRATION FOR THE TIME PERIOD EQUIVALENT TO THE FIRE-RESISTANCE RATING OF THE CONSTRUCTION PENETRATED.R302.4.1.1 FIRE-RESISTANCE-RATED ASSEMBLYPENETRATIONS SHALL BE INSTALLED AS TESTED IN THE APPROVED FIRE-RESISTANCE-RATED ASSEMBLY.R302.4.1.2 PENETRATION FIRESTOP SYSTEMPENETRATIONS SHALL BE PROTECTED BY AN APPROVED PENETRATION FIRESTOP SYSTEM INSTALLED AS TESTED IN ACCORDANCE WITH ASTM E 814 OR UL 1479, WITH APOSITIVE PRESSURE DIFFERENTIAL OF NOT LESS THAN 0.01 INCH OF WATER (3 PA) AND SHALL HAVE AN F RATING OF NOT LESS THAN THE REQUIRED FIRE-RESISTANCE RATING OFTHE WALL OR FLOOR-CEILING ASSEMBLY PENETRATED. R302.7 UNDER-STAIR PROTECTIONENCLOSED ACCESSIBLE SPACE UNDER STAIRS THAT IS ACCESSED BY A DOOR OR ACCESS PANEL SHALL HAVE WALLS, UNDER-STAIR SURFACE AND ANY SOFFITS PROTECTED ON THE ENCLOSED SIDE WITH 1/2-INCH (12.7 MM)GYPSUM BOARD. R302.9 Flame Spread Index and Smoke-Developed Index for Wall and CeilingFinishesFlame spread and smoke developed indexes for wall and ceiling finishes shall be in accordance with Sections R302.9.1 through R302.9.4.R302.9.1 Flame Spread Index Wall and ceiling finishes shall have a flame spread index of not greater than 200.Exception: Flame spread index requirements for finishes shall not apply to trim defined as picture molds, chair rails, baseboards and handrails; todoors and windows or their frames; or to materials that are less than 1/28 inch (0.91 mm) in thickness cemented to the surface of walls or ceilings ifthese materials exhibit flame spread index values not greater than those of paper of this thickness cemented to a noncombustible backing. R302.9.2 Smoke-Developed IndexWall and ceiling finishes shall have a smoke-developed index of not greater than 450.R302.9.3 TestingTests shall be made in accordance with ASTM E 84 or UL 723.R302.9.4 Alternative Test Method As an alternative to having a flame spread index of not greater than 200 and a smoke-developed index of not greater than 450 where tested inaccordance with ASTM E 84 or UL 723, wall and ceiling finishes shall be permitted to be tested in accordance with NFPA 286. Materials tested inaccordance with NFPA 286 shall meet the following criteria:The interior finish shall comply with the following:1. During the 40 kW exposure, flames shall not spread to the ceiling.2. The flame shall not spread to the outer extremity of the sample on any wall or ceiling.3. Flashover, as defined in NFPA 286, shall not occur.4. The peak heat release rate throughout the test shall not exceed 800 kW.5. The total smoke released throughout the test shall not exceed 1,000 m2. R302.11 FireblockingIn combustible construction, fireblocking shall be provided to cut off both vertical and horizontal concealed draft openings and to form an effective firebarrier between stories, and between a top story and the roof space. Fireblocking shall be provided in wood-framed construction in the following locations:1. In concealed spaces of stud walls and partitions, including furred spaces and parallel rows of studs or staggered studs, as follows:1.1. Vertically at the ceiling and floor levels.1.2. Horizontally at intervals not exceeding 10 feet (3048 mm).2. At interconnections between concealed vertical and horizontal spaces such as occur at soffits, drop ceilings and cove ceilings.3. In concealed spaces between stair stringers at the top and bottom of the run. Enclosed spaces under stairs shall comply with SectionR302.7.4. At openings around vents, pipes, ducts, cables and wires at ceiling and floor level, with ana pproved material to resist the free passage offlame and products of combustion. The material filling this annular space shall not be required to meet the ASTM E 136 requirements.5. For the fireblocking of chimneys and fireplaces, see Section R1003.19.6. Fireblocking of cornices of a two-family dwelling is required at the line of dwelling unit separation. R302.11.1 Fireblocking MaterialsExcept as provided in Section R302.11, Item 4, fireblocking shall consist of the following materials.1. Two-inch (51 mm) nominal lumber.2. Two thicknesses of 1-inch (25.4 mm) nominal lumber with broken lap joints.3. One thickness of 23/32-inch (18.3 mm) wood structural panels with joints backed by 23/32-inch (18.3 mm) wood structural panels.4. One thickness of 3/4-inch (19.1 mm) particleboard with joints backed by 3/4-inch (19.1 mm) particleboard.5. One-half-inch (12.7 mm) gypsum board.6. One-quarter-inch (6.4 mm) cement-based millboard. 7. Batts or blankets of mineral wool or glass fiber or other approved materials installed in such a manner as to be securely retained inplace.8. Cellulose insulation installed as tested in accordance with ASTM E119 or UL 263, for the specific application.R302.11.1.1 Batts or Blankets of Mineral or Glass FiberBatts or blankets of mineral or glass fiber or other approved nonrigid materials shall be permitted for compliance with the 10-foot (3048 mm) horizontal fireblocking in walls constructed using parallel rows of studs or staggered studs.R302.11.1.2 Unfaced FiberglassUnfaced fiberglass batt insulation used as fireblocking shall fill the entire cross section of the wall cavity to a height of not less than 16 inches (406mm) measured vertically. Where piping, conduit or similar obstructions are encountered, the insulation shall be packed tightly around theobstruction. R302.11.1.3 Loose-Fill Insulation MaterialLoose-fill insulation material shall not be used as a fireblock unless specifically tested in the form and manner intended for use to demonstrate itsability to remain in place and to retard the spread of fire and hot gases.R302.11.2 Fireblocking IntegrityThe integrity of fireblocks shall be maintained. R302.11.1 Fireblocking Materials Except as provided in Section R302.11, Item 4, fireblocking shall consist of the following materials.1. Two-inch (51 mm) nominal lumber.2. Two thicknesses of 1-inch (25.4 mm) nominal lumber with broken lap joints.3. One thickness of 23/32-inch (18.3 mm) wood structural panels with joints backed by 23/32-inch (18.3 mm) wood structural panels.4. One thickness of 3/4-inch (19.1 mm) particleboard with joints backed by 3/4-inch (19.1 mm) particleboard.5. One-half-inch (12.7 mm) gypsum board.6. One-quarter-inch (6.4 mm) cement-based millboard.7. Batts or blankets of mineral wool or glass fiber or other approved materials installed in such a manner as to be securely retained in place.8. Cellulose insulation installed as tested in accordance with ASTM E119 or UL 263, for the specific application. R302.11.1.1 Batts or Blankets of Mineral or Glass FiberBatts or blankets of mineral or glass fiber or other approved nonrigid materials shall be permitted for compliance with the 10-foot (3048 mm)horizontal fireblocking in walls constructed using parallel rows of studs or staggered studs.R302.11.1.2 Unfaced FiberglassUnfaced fiberglass batt insulation used as fireblocking shall fill the entire cross section of the wall cavity to a height of not less than 16 inches (406mm) measured vertically. Where piping, conduit or similar obstructions are encountered, the insulation shall be packed tightly around theobstruction.R302.11.1.3 Loose-Fill Insulation Material Loose-fill insulation material shall not be used as a fireblock unless specifically tested in the form and manner intended for use to demonstrate itsability to remain in place and to retard the spread of fire and hot gases. R302.12 DraftstoppingIn combustible construction where there is usable space both above and below the concealed space of a floor-ceiling assembly, draftstops shall beinstalled so that the area of the concealed space does not exceed 1,000 square feet (92.9 m2). Draftstopping shall divide the concealed space intoapproximately equal areas. Where the assembly is enclosed by a floor membrane above and a ceiling membrane below, draftstopping shall be providedin floor-ceiling assemblies under the following circumstances:1. Ceiling is suspended under the floor framing.2. Floor framing is constructed of truss-type open-web or perforated members. R302.12.1 MaterialsDraftstopping materials shall be not less than 1/2-inch (12.7 mm) gypsum board, 3/8-inch (9.5 mm) wood structural panels or other approved materialsadequately supported. Draftstopping shall be installed parallel to the floor framing members unless otherwise approved by the building official. Theintegrity of the draftstops shall be maintained. DRAWN BY: SCALE: PROJECT: pobox 2016 Bozeman, MT 59771(406)531.9671 millerdesignbuild@gmail.com DATE:PROJECT NO REVISION DATE FOR CONSTRUCTION 12" = 1'-0" a0.2 SM Fire Safety Notes Garage / ADURemodel 116 (114 ADU) S. 11th AveBozeman, MT 59715 05/24/201122 12" = 1'-0"1 GENERAL FIRE SEPERATION NOTES 12" = 1'-0"4FLAME SPREAD NOTES 12" = 1'-0"3FIREBLOCKING & DRAFTSTOPPING NOTES