FIRE-RESISTANT MATERIALS AND CONSTRUCTION
SECTION 714 — THROUGH-PENETRATION FIRE STOPS
Through-penetration fire stops required by this code shall have an F or T rating as determined by tests conducted in accordance with UBC Standard 7-5.
Through-penetration fire stops may be used for membrane penetrations.
The F rating shall apply to all through penetrations and shall not be less than the required fire-resistance rating of the assembly penetrated.
The T rating shall apply to those through-penetration locations required to have T ratings as specified in Section 710.2.3 and shall not be less than the required fire-resistance rating of the assembly penetrated.
Where sleeves are used, the sleeves shall be securely fastened to the assembly penetrated. All space between the item contained in the sleeve and the sleeve itself and any space between the sleeve and the assembly penetrated shall be protected. Insulation and coverings on the penetrating item shall not penetrate the assembly unless the specific materials used have been tested as part of the assembly.
EXCEPTION: Fire damper or combination fire damper/smoke damper sleeves shall be installed in accordance with their listing.
COPYRIGHT 2003; International Conference of Building Officials Document provided by IHS Licensee=Aramco HQ/9980755100, User=, 12/31/2003 04:54:42 MST Questions or comments about this message: please call the Document
--````,```,,,,,,``,`,,,,,,`,-`-`,,`,,`,`,,`---TABLE 7-A
TABLE 7-A 1997 UNIFORM BUILDING CODE
1--76
TABLE 7-A—MINIMUM PROTECTION OF STRUCTURAL PARTS BASED ON TIME PERIODS FOR VARIOUS NONCOMBUSTIBLE INSULATING MATERIALSa
MINIMUM THICKNESS OF INSULATING MATERIAL FOR FOLLOWING FIRE-RESISTIVE PERIODS (inches) STRUCTURAL
PARTS TO BE ITEM × 25.4 for mm
PARTS TO BE
PROTECTED ITEM
NUMBER INSULATING MATERIAL USED 4 Hr. 3 Hr. 2 Hr. 1 Hr.
1-1.1 Carbonate, lightweight and sand-lightweight aggregate concrete, members 6I by 6I (152 mm by 152 mm) or greater (not including sandstone, granite and siliceous
gravel).1 21/2 2 11/2 1
1-1.2 Carbonate, lightweight and sand-lightweight aggregate concrete, members 8I by 8I (203 mm by 203 mm) or greater (not including sandstone, granite and siliceous
gravel).1 2 11/2 1 1
1-1.3 Carbonate, lightweight and sand-lightweight aggregate concrete, members 12I by 12I (305 mm by 305 mm) or greater (not including sandstone, granite and siliceous
gravel).1 11/2 1 1 1
1-1.4 Siliceous aggregate concrete and concrete excluded in Item 1-1.1, members 6I by 6I
(152 mm by 152 mm) or greater.1 3 2 11/2 1
1-1.5 Siliceous aggregate concrete and concrete excluded in Item 1-1.1, members 8I by 8I
(203 mm by 203 mm) or greater.1 21/2 2 1 1
1-1.6 Siliceous aggregate concrete and concrete excluded in Item 1-1.1, members 12I by
12I (305 mm by 305 mm) or greater.1 2 1 1 1
1-2.1 Clay or shale brick with brick and mortar fill.1 33/4 21/4
1-3.1 4I (102 mm) hollow clay tile in two 2I (51 mm) layers;1/2I(12.7 mm) mortar between tile and column;3/8I(9.5 mm) metal mesh [0.046I (1.2 mm) wire diameter]
in horizontal joints; tile fill.1 4
1-3.2 2I (51 mm) hollow clay tile;3/4I(19 mm) mortar between tile and column;3/8I(9.5 mm) metal mesh [0.046I (1.2 mm) wire diameter] in horizontal joints; limestone concrete fill;1plastered with3/4I(19 mm) gypsum plaster. 3
1-3.3
2I (51 mm) hollow clay tile with outside wire ties [0.08I (2 mm) diameter] at each course of tile or3/8I(9.5 mm) metal mesh [0.046I (1.2 mm) diameter wire] in horizontal joints; limestone or trap-rock concrete fill1extending 1I (25 mm) outside column on all sides.
3
1-3.4 2I (51 mm) hollow clay tile with outside wire ties [0.08I (2 mm) diameter] at each course of tile with or without concrete fill;3/4I(19 mm) mortar between tile and
column. 2
1. Steel columns and all members of
1-4.1 Cement plaster over metal lath wire tied to3/4I(19 mm) cold-rolled vertical channels with 0.049 inch (1.24 mm) (No. 18 B.W. gage) wire ties spaced 3I to 6I (76 mm to 152
mm) on center. Plaster mixed 1:21/2by volume, cement to sand. 21/22 7/8 members of
primary trusses
1-5.1
Vermiculite concrete, 1:4 mix by volume over paperbacked wire fabric lath wrapped directly around column with additional 2I by 2I (51 mm by 51 mm) 0.065 inch/0.065 inch (1.65 mm/1.65 mm) (No. 16/16 B.W. gage) wire fabric placed3/4I(19 mm) from outer concrete surface. Wire fabric tied with 0.049 inch (1.24 mm) (No. 18 B.W. gage) wire spaced 6I (152 mm) on center for inner layer and 2I (51 mm) on center for outer layer.
2
1-6.1
Perlite or vermiculite gypsum plaster over metal lath wrapped around column and furred 11/4I(32 mm) from column flanges. Sheets lapped at ends and tied at 6I (152 mm) intervals with 0.049 inch (1.24 mm) (No. 18 B.W. gage) tie wire. Plaster pushed through to flanges.
11/2 1
1-6.2 Perlite or vermiculite gypsum plaster over self-furring metal lath wrapped directly around column, lapped 1I (25 mm) and tied at 6I (152 mm) intervals with 0.049 inch
(1.24 mm) (No. 18 B.W. gage) wire. 13/4 13/8 1
1-6.3 Perlite or vermiculite gypsum plaster on metal lath applied to 3/4I (19 mm) cold-rolled channels spaced 24 inches (610 mm) apart vertically and wrapped
flatwise around column. 11/2
1-6.4
Perlite or vermiculite gypsum plaster over two layers of 1/2I(12.7 mm) plain full-length gypsum lath applied tight to column flanges. Lath wrapped with 1I (25.4 mm) hexagonal mesh of No. 20 gage wire and tied with doubled 0.035 inch diameter (0.89 mm) (No. 18 B.W. gage) wire ties spaced 23I (584 mm) on center. For three-coat work the plaster mix for the second coat shall not exceed 100 pounds (45.4 kg) of gypsum to 21/2cubic feet (0.07 m3) of aggregate for the three-hour system.
21/2 2
1-6.5
Perlite or vermiculite gypsum plaster over one layer of1/2I(12.7 mm) plain full-length gypsum lath applied tight to column flanges. Lath tied with doubled 0.049 inch (1.24 mm) (No. 18 B.W. gage) wire ties spaced 23I (584 mm) on center and scratch coat wrapped with 1I (25 mm) hexagonal mesh 0.035 inch (0.89 mm) (No. 20 B.W. gage) wire fabric. For three-coat work, the plaster mix for the second coat shall not exceed 100 pounds (45.4 kg) of gypsum to 21/2cubic feet (0.07 m3) of aggregate.
2
1-7.1
Multiple layers of1/2I(12.7 mm) gypsum wallboard3adhesively4secured to column flanges and successive layers. Wallboard applied without horizontal joints. Corner edges of each layer staggered. Wallboard layer below outer layer secured to column with doubled 0.049 inch (1.24 mm) (No. 18 B.W. gage) steel wire ties spaced 15I (381 mm) on center. Exposed corners taped and treated.
2 1
(Continued)
COPYRIGHT 2003; International Conference of Building Officials Document provided by IHS Licensee=Aramco HQ/9980755100, User=, 12/31/2003 04:54:42 MST Questions or comments about this message: please call the Document
--````,```,,,,,,``,`,,,,,,`,-`-`,,`,,`,`,,`---TABLE 7-A TABLE 7-A 1997 UNIFORM BUILDING CODE
1--77 TABLE 7-A—MINIMUM PROTECTION OF STRUCTURAL PARTS BASED ON TIME PERIODS
FOR VARIOUS NONCOMBUSTIBLE INSULATING MATERIALSa—(Continued)
MINIMUM THICKNESS OF INSULATING MATERIAL FOR FOLLOWING FIRE-RESISTIVE PERIODS (inches) STRUCTURAL
PARTS TO BE ITEM × 25.4 for mm
PARTS TO BE
PROTECTED ITEM
NUMBER INSULATING MATERIAL USED 4 Hr. 3 Hr. 2 Hr. 1 Hr.
1-7.2
Three layers of5/8I(15.9 mm) Type X gypsum wallboard.3First and second layer held in place by1/8I(3.2 mm) diameter by 13/8I(35 mm) long ring shank nails with 5/16I(7.9 mm) diameter heads spaced 24I (610 mm) on center at corners. Middle layer also secured with metal straps at mid-height and 18I (457 mm) from each end, and by metal corner bead at each corner held by the metal straps. Third layer attached to corner bead with 1I (25 mm) long gypsum wallboard screws spaced 12I (305 mm) on center.
17/8
1. Steel columns and all members of primary trusses (cont.)
1-7.3
Three layers of5/8I(15.9 mm) Type X gypsum wallboard,3each layer screw attached to 15/8I(41 mm) steel studs 0.018 inch thick (0.46 mm) (No. 25 carbon sheet steel gage) at each corner of column. Middle layer also secured with 0.049 inch (0.12 mm) (No. 18 B.W. gage) double strand steel wire ties, 24I (610 mm) on center. Screws are No. 6 by 1I (25 mm) spaced 24I (610 mm) on center for inner layer, No. 6 by 15/8I(41 mm) spaced 12I (305 mm) on center for middle layer and No. 8 by 21/4I(57 mm) spaced 12I (305 mm) on center for outer layer.
17/8
( )
1-8.1
Wood-fibered gypsum plaster mixed 1:1 by weight gypsum to sand aggregate applied over metal lath. Lath lapped 1I (25 mm) and tied 6I (152 mm) on center at all ends, edges and spacers with 0.049 inch (0.12 mm) (No. 18 B.W. gage) steel tie wires. Lath applied over1/2I(12.7 mm) spacers made of3/4I(19 mm) furring channel with 2I (51 mm) legs bent around each corner. Spacers located 1I (25 mm) from top and bottom of member and a maximum of 40I (1016 mm) on center and wire tied with a single strand of 0.049 inch (0.12 mm) (No. 18 B.W. gage) steel tie wires. Corner bead tied to the lath at 6I (152 mm) on center along each corner to provide plaster thickness.
15/8
2-1.1
Carbonate, lightweight and sand-lightweight aggregate concrete (not including sandstone, granite and siliceous gravel) with 3I (76 mm) or finer metal mesh placed 1I (25 mm) from the finished surface anchored to the top flange and providing not less than 0.025 square inch of steel area per foot (53 mm2of steel area per meter) in each direction.
2 11/2 1 1
2-1.2
Siliceous aggregate concrete and concrete excluded in Item 2-1.1 with 3I (76 mm) or finer metal mesh placed 1I (25 mm) from the finished surface anchored to the top flange and providing not less than 0.025 square inch of steel area per foot (53 mm2of steel area per meter) in each direction.
21/2 2 11/2 1
2-2.1 Cement plaster on metal lath attached to3/4I(19 mm) cold-rolled channels with 0.049 inch (1.24 mm) (No. 18 B.W. gage) wire ties spaced 3I to 6I (76 mm to 152 mm) on
center. Plaster mixed 1:21/2by volume, cement to sand. 21/22 7/8
2-3.1
Vermiculite gypsum plaster on a metal lath cage, wire tied to 0.165 inch (4.19 mm) diameter (No. 8 B.W. gage) steel wire hangers wrapped around beam and spaced 16I (406 mm) on center. Metal lath ties spaced approximately 5I (127 mm) on center at cage sides and bottom.
7/8
2. Webs or flanges of steel beams and girders
2-4.1
Two layers of5/8I(15.9 mm) Type X gypsum wallboard3are attached to U-shaped brackets spaced 24I (610 mm) on center. 0.018 inch (0.46 mm) (No. 25 carbon sheet steel gage) 15/8Ideep by 1I (41 mm deep by 25 mm) galvanized steel runner channels are first installed parallel to and on each side of the top beam flange to provide a1/2I (12.7 mm) clearance to the flange. The channel runners are attached to steel deck or concrete floor construction with approved fasteners spaced 12I (305 mm) on center.
U-shaped brackets are formed from members identical to the channel runners. At the bent portion of the U-shaped bracket, the flanges of the channel are cut out so that 15/8I(41 mm) deep corner channels can be inserted without attachment parallel to each side of the lower flange.
As an alternate, 0.021 inch (0.41 mm) (No. 24 carbon sheet steel gage) 1I by 2I (25 mm by 51 mm) runner and corner angles may be used in lieu of channels, and the web cutouts in the U-shaped brackets may be omitted. Each angle is attached to the bracket with1/2I(12.7 mm) long No. 8 self-drilling screws. The vertical legs of the U-shaped bracket are attached to the runners with one1/2I(12.7 mm) long No. 8 self-drilling screw. The completed steel framing provides a 21/8Iand 11/2I(54 mm and 38 mm) space between the inner layer of wallboard and the sides and bottom of the steel beam, respectively. The inner layer of wallboard is attached to the top runners and bottom corner channels or corner angles with 11/4I(52 mm) long No. 6 self-drilling screws spaced 16I (406 mm) on center. The outer layer of wallboard is applied with 13/4I (44.5 mm) long No. 6 self-drilling screws spaced 8I (203 mm) on center. The bottom corners are reinforced with metal corner beads.
11/4
(Continued)
COPYRIGHT 2003; International Conference of Building Officials Document provided by IHS Licensee=Aramco HQ/9980755100, User=, 12/31/2003 04:54:42 MST Questions or comments about this message: please call the Document
--````,```,,,,,,``,`,,,,,,`,-`-`,,`,,`,`,,`---TABLE 7-A
TABLE 7-A 1997 UNIFORM BUILDING CODE
1--78
TABLE 7-A—MINIMUM PROTECTION OF STRUCTURAL PARTS BASED ON TIME PERIODS FOR VARIOUS NONCOMBUSTIBLE INSULATING MATERIALSa—(Continued)
MINIMUM THICKNESS OF INSULATING MATERIAL FOR FOLLOWING FIRE-RESISTIVE PERIODS (inches) STRUCTURAL
PARTS TO BE ITEM × 25.4 for mm
PARTS TO BE
PROTECTED ITEM
NUMBER INSULATING MATERIAL USED 4 Hr. 3 Hr. 2 Hr. 1 Hr.
2. Webs or flanges of steel beams and girders (cont.)
2-4.2
Three layers of5/8I(15.9 mm) Type X gypsum wallboard3attached to a steel suspension system as described immediately above utilizing the 0.018 inch (0.46 mm) (No. 25 carbon sheet steel gage) 1I by 2I (25 mm by 51 mm) lower corner angles. The framing is located so that a 21/8Iand 2I (54 mm and 51 mm) space is provided between the inner layer of wallboard and the sides and bottom of the beam, respectively. The first two layers of wallboard are attached as described immediately above. A layer of 0.035 inch (0.89 mm) (No. 20 B.W. gage) 1I (25 mm) hexagonal galvanized wire mesh is applied under the soffit of the middle layer and up the sides approximately 2I (51 mm). The mesh is held in position with the No. 6 15/8I(41 mm) long screws installed in the vertical leg of the bottom corner angles. The outer layer of wallboard is attached with No. 6 21/4I(57 mm) long screws spaced 8I (203 mm) on center. One screw is also installed at the mid-depth of the bracket in each layer. Bottom corners are finished as described above.
17/8
3. Bonded pretensioned reinforcement in prestressed concrete5
3-1.1 Carbonate, lightweight, sand-lightweight and siliceous6aggregate concrete Beams or girders
Solid slabs8 47 37
2 21/2 11/2
11/2 1
4. Bonded or unbonded posttensioned
4-1.1
Carbonate, lightweight, sand-lightweight and siliceous aggregate concrete Unrestrained members:
Solid slabs8 Beams and girders10
8 in. (203 mm) wide
> 12 in. (305 mm) wide 3
2 41/2 21/2
11/2 21/2
2 13/4 11/2 posttensioned
tendons in prestressed concrete5.9
4-1.2
Carbonate, lightweight, sand-lightweight and siliceous aggregate Restrained members:11
Solid slabs8 Beams and girders10
8 in. (203 mm) wide
> 12 in. (305 mm) wide
11/4 21/2 2
1 123/4
3/4 13/4 11/2 5. Reinforcing
steel in reinforced concrete
5-1.1 Carbonate, lightweight and sand-lightweight aggregate concrete, members 12I (305 mm) or larger, square or round. (Size limit does not apply to beams and girders
monolithic with floors.) 11/2 11/2 11/2 11/2
concrete columns, beams, girders
and trusses 5-1.2 Siliceous aggregate concrete, members 12I (305 mm) or larger, square or round. (Size
limit does not apply to beams and girders monolithic with floors.) 2 11/2 11/2 11/2 6. Reinforcing
steel in reinforced
6-1.1 Carbonate, lightweight and sand-lightweight aggregate concrete. 11/4 11/4 1 3/4 reinforced
concrete
joists12 6-1.2 Siliceous aggregate concrete. 13/4 11/2 1 3/4
7. Reinforcing
and tie rods in 7-1.1 Carbonate, lightweight and sand-lightweight aggregate concrete. 1 1 3/4 3/4 and tie rods in
floor and roof
slabs12 7-1.2 Siliceous aggregate concrete. 11/4 1 1 3/4
aGeneric fire-resistance ratings (those not designated as PROPRIETARY* in the listing) in the Fire-Resistance Design Manual, Fourteenth Edition, dated April 1994, as published by the Gypsum Association, may be accepted as if herein listed.
1Reentrant parts of protected members to be filled solidly.
2Two layers of equal thickness with a3/4-inch (19 mm) air space between.
3For all of the construction with gypsum wallboard described in Table 7-A, gypsum base for veneer plaster of the same size, thickness and core type may be substi-tuted for gypsum wallboard, provided attachment is identical to that specified for the wallboard and the joints on the face layer are reinforced, and the entire surface is covered with a minimum of1/16-inch (1.6 mm) gypsum veneer plaster.
4An approved adhesive qualified under UBC Standard 7-1.
5Where lightweight or sand-lightweight concrete having an oven-dry weight of 110 pounds per cubic foot (1762 kg/m3) or less is used, the tabulated minimum cover may be reduced 25 percent, except that in no case shall the cover be less than3/4inch (19 mm) in slabs or 11/2inches (38 mm) in beams or girders.
6For solid slabs of siliceous aggregate concrete, increase tendon cover 20 percent.
7Adequate provisions against spalling shall be provided by U-shaped or hooped stirrups spaced not to exceed the depth of the member with a clear cover of 1 inch (25 mm).
8Prestressed slabs shall have a thickness not less than that required in Table 7-C for the respective fire-resistive time period.
9Fire coverage and end anchorages shall be as follows: Cover to the prestressing steel at the anchor shall be1/2inch (12.7 mm) greater than that required away from the anchor. Minimum cover to steel-bearing plate shall be 1 inch (25 mm) in beams and3/4inch (19 mm) in slabs.
10For beam widths between 8 inches and 12 inches (203 mm and 305 mm), cover thickness can be determined by interpolation.
11Interior spans of continuous slabs, beams and girders may be considered restrained.
12For use with concrete slabs having a comparable fire endurance where members are framed into the structure in such a manner as to provide equivalent perform-ance to that of monolithic concrete construction.
COPYRIGHT 2003; International Conference of Building Officials Document provided by IHS Licensee=Aramco HQ/9980755100, User=, 12/31/2003 04:54:42 MST Questions or comments about this message: please call the Document
--````,```,,,,,,``,`,,,,,,`,-`-`,,`,,`,`,,`---TABLE 7-B TABLE 7-B 1997 UNIFORM BUILDING CODE
1--79 TABLE 7-B—RATED FIRE-RESISTIVE PERIODS FOR VARIOUS WALLS AND PARTITIONSa,1
MINIMUM FINISHED THICKNESS FACE-TO-FACE2
(inches)
ITEM × 25.4 for mm
MATERIAL ITEM
NUMBER CONSTRUCTION 4 Hr. 3 Hr. 2 Hr. 1 Hr.
1-1.1 Solid units (at least 75 percent solid). 8 63 4
1-2.1 Hollow brick units4(at least 71 percent solid). 8
1-2.2 Hollow brick units (at least 60 percent solid, cells filled with loose-fill insulation). 8
1-2.3 Hollow brick units at least 64 percent solid. 12
1-2.4 Hollow brick, not filled. 5.0 4.3 3.4 2.3
1-2.5 Hollow brick unit wall, grout or filled with perlite vermiculite or expanded shale
aggregate. 6.6 5.5 4.4 3.0
1-3.1 Hollow (rowlock5). 12 8
1. Brick of clay
or shale 1-4.1 Cavity wall consisting of two 3I (76 mm) (actual) solid clay brick units separated by 2I (51 mm) air space, joint reinforcement every 16I (406 mm) on center vertically.
8
1-4.2 Cavity wall consisting of two 4I (100 mm) nominal solid clay brick units separated by 2I (51 mm) air space,1/4I(6.4 mm) metal ties for 3 square feet (0.28 m2) of wall area.
10
1-5.1 4I (102 mm) nominal thick units at least 75 percent solid backed with a hat-shaped metal furring channel3/4I(19 mm) thick formed from 0.021I (0.53 mm) sheet metal attached to the brick wall on 24I (610 mm) centers with approved fasteners, and1/2I(12.7 mm) Type X gypsum wallboard7attached to the metal furring strips with 1I (25 mm) long Type S screws spaced 8I (203 mm) on center.
56
2-1.1 Two cells in wall thickness, units at least 40 percent solid. 8
2-1.2 Two cells in wall thickness, units at least 43 percent solid.
2-1.3 Two cells in wall thickness, units at least 46 percent solid. 8
2-1.4 Two cells in wall thickness, units at least 49 percent solid. 8
2-1.5 Three or four cells in wall thickness, units at least 40 percent solid. 8
2-1.6 Three or four cells in wall thickness, units at least 43 percent solid. 8 2. Hollow clay 2-1.7 Three or four cells in wall thickness, units at least 48 percent solid. 8 2. Hollow clay
tile,
nonload-b i 2-1.8 Three or four cells in wall thickness, units at least 53 percent solid. 8
tile, nonload
bearing 2-1.9 Three cells in wall thickness, units at least 40 percent solid. 12
2-1.10 Three cells in wall thickness, units at least 45 percent solid. 12 2-1.11 Three cells in wall thickness, units at least 49 percent solid. 12 2-1.12 Two units and three or four cells in wall thickness, units at least 40 percent solid. 12 2-1.13 Two units and three or four cells in wall thickness, units at least 45 percent solid. 12 2-1.14 Two units and three or four cells in wall thickness, units at least 53 percent solid. 12 2-1.15 Two or three units and four or five cells in wall thickness, units at least 40 percent
solid. 16
3-1.1 One cell in wall thickness, units at least 40 percent solid.8,9 4
3. Structural clay 3-1.2 One cell in wall thickness, units at least 30 percent solid.8,9 6
3. Structural clay tile,
load-b i 3-1.3 Two cells in wall thickness, units at least 45 percent solid.10 6
tile, load
bearing 3-1.4 One cell in wall thickness, units at least 40 percent solid.9,10 4
3-1.5 One cell in wall thickness, units at least 30 percent solid.9,10 6
4-1.1 Two cells in wall thickness, units at least 40 percent solid. 8
4-1.2 Two cells in wall thickness, units at least 49 percent solid. 8
4-1.3 Three or four cells in wall thickness, units at least 53 percent solid. 8
4 H ll 4-1.4 Two cells in wall thickness, units at least 46 percent solid. 8
4. Hollow
structural clay 4-1.5 Three cells in wall thickness, units at least 40 percent solid. 12
structural clay tile,
load-b i 4-1.6 Two units and three cells in wall thickness, units at least 40 percent solid. 12 tile, load
bearing 4-1.7 Two units and three or four cells in wall thickness, units at least 45 percent solid. 12
4-1.8 Three cells in wall thickness, units at least 45 percent solid. 12
4-1.9 Three cells in wall thickness, units at least 49 percent solid. 12
4-1.10 Two units and four cells in wall thickness, units at least 43 percent solid. 16 4-1.11 Two or three units and four or five cells in wall thickness, units at least 40 percent
solid. 16
(Continued)
COPYRIGHT 2003; International Conference of Building Officials Document provided by IHS Licensee=Aramco HQ/9980755100, User=, 12/31/2003 04:54:42 MST Questions or comments about this message: please call the Document
--````,```,,,,,,``,`,,,,,,`,-`-`,,`,,`,`,,`---TABLE 7-B
TABLE 7-B 1997 UNIFORM BUILDING CODE
1--80
TABLE 7-B—RATED FIRE-RESISTIVE PERIODS FOR VARIOUS WALLS AND PARTITIONSa,1—(Continued)
MINIMUM FINISHED THICKNESS FACE-TO-FACE2
(inches)
ITEM × 25.4 for mm
MATERIAL ITEM
NUMBER CONSTRUCTION 4 Hr. 3 Hr. 2 Hr. 1 Hr.
5. Combination of clay brick and load
5.1.1 4I (102 mm) solid brick and 4I (102 mm) tile (at least 40 percent solid). 8 and
load-bearing hollow clay tile
5.1.2 4I (102 mm) solid brick and 8I (203 mm) tile (at least 40 percent solid). 12
6-1.111, 12 Expanded slag or pumice. 4.7 4.0 3.2 2.1
6. Concrete 6-1.211, 12 Expanded clay, shale or slate. 5.1 4.4 3.6 2.6
6. Concrete
masonry units 6-1.311 Limestone, cinders or air-cooled slag. 5.9 5.0 4.0 2.7
6-1.411, 12 Calcareous or siliceous gravel. 6.2 5.3 4.2 2.8
Siliceous aggregate concrete. 7.0 6.2 5.0 3.5
7. Solid
13 14 7-1.1 Carbonate aggregate concrete. 6.6 5.7 4.6 3.2
7. Solid
concrete13, 14 Sand-lightweight concrete. 5.4 4.6 3.8 2.7
Lightweight concrete. 5.1 4.4 3.6 2.5
8-1.1 One 2I (51 mm) unit cored 15 percent maximum and one 4I (102 mm) unit cored 25 percent maximum with 3/4I(19 mm) mortar-filled collar joint. Unit positions
reversed in alternate courses. 63/8
8-1.2
One 2I (51 mm) unit cored 15 percent maximum and one 4I (102 mm) unit cored 40 percent maximum with3/8I(9.5 mm) mortar-filled collar joint. Plastered one side with3/4I(19 mm) gypsum plaster. Two wythes tied together every fourth course with No. 22 gage corrugated metal ties.
63/4
8-1.3 One unit with three cells in wall thickness, cored 29 percent maximum. 6 8. Glazed or
un-glazed facing tile, nonload-bearing
8-1.4
One 2I (51 mm) unit cored 22 percent maximum and one 4I (102 mm) unit cored 41 percent maximum with1/4I(6 mm) mortar-filled collar joint. Two wythes tied together every third course with 0.030 inch (0.76 mm) (No. 22 galvanized sheet steel gage) corrugated metal ties.
6
8-1.5 One 4I (102 mm) unit cored 25 percent maximum with3/4I(19 mm) gypsum plaster
on one side. 43/4
8-1.6 One 4I (102 mm) unit with two cells in wall thickness, cored 22 percent maximum. 4 8-1.7 One 4I (102 mm) unit cored 30 percent maximum with3/4I(19 mm) vermiculite
gypsum plaster on one side. 41/2
8-1.8 One 4I (102 mm) unit cored 39 percent maximum with3/4I(19 mm) gypsum plaster
on one side. 41/2
9-1.1
3/4I(19 mm) by 0.055 inch (1.4 mm) (No. 16 carbon sheet steel gage) vertical cold-rolled channels, 16I (406 mm) on center with 2.5-pound (1.13 kg) flat metal lath applied to one face and tied with 0.049 inch (1.24 mm) (No. 18 B.W. gage) wire at 6I (152 mm) spacing. Gypsum plaster each side mixed 1:2 by weight, gypsum to sand aggregate.
26
9-1.2
3/4I(19 mm) by 0.055 inch (1.4 mm) (No. 16 carbon sheet steel gage) cold-rolled channels 16I (406 mm) on center with metal lath applied to one face and tied with 0.049 inch (1.24 mm) (No. 18 B.W. gage) wire at 6I (152 mm) spacing. Perlite or vermiculite gypsum plaster each side. For three-coat work, the plaster mix for the second coat shall not exceed 100 pounds (45.4 kg) of gypsum to 21/2cubic feet (0.071 m3) of aggregate for the one-hour system.
21/26 26
9. Solid gypsum plaster
9-1.3
3/4I(19 mm) by 0.055 inch (1.4 mm) (No. 16 carbon sheet steel gage) vertical cold-rolled channels, 16I (406 mm) on center, with3/8I(9.5 mm) gypsum lath applied to one face and attached with sheet metal clips. Gypsum plaster each side mixed 1:2 by weight, gypsum to sand aggregate.
26
9-2.1 Studless with1/2I(12.7 mm) full-length plain gypsum lath and gypsum plaster each side. Plaster mixed 1:1 for scratch coat and 1:2 for brown coat, by weight, gypsum to
sand aggregate. 26
9-2.2 Studless with1/2I(12.7 mm) full-length plain gypsum lath and perlite or vermiculite
gypsum plaster each side. 21/26 26
9-2.3 Studless partition with3/8I(9.5 mm) rib metal lath installed vertically, adjacent edges
9-2.3 Studless partition with3/8I(9.5 mm) rib metal lath installed vertically, adjacent edges