Page 237 - ICC IEBC 2018

RESOURCE A

TABLE 1.3.2—continued
WOOD FRAME WALLS
4″ TO LESS THAN 6″ THICK
PERFORMANCE REFERENCE NUMBER REC.
ITEM CODE THICKNESS CONSTRUCTION DETAILS NOTES
LOAD TIME PRE-BMS-92 BMS-92 POST-BMS-92 HOURS
2″ × 4″ stud wall; / ″, 1:5; 1:7.5 lime See 17, 21,
1
1
2
W-4-W-42 4 / ″ plaster on wood lath on both wall faces. Note 23 30 min. 1 23 1 / 2
2
1
2″ × 4″ stud wall; / ″ thick 1:5; 1:7.5 lime
2
1
W-4-W-43 4 / ″ plaster on wood lath on both faces; See 45 min. 1 17, 18, 3 /
2 Note 23 21, 23 4
insulated cavities.
3
2″ × 4″ stud wall; / ″ thick cement-asbes-
16
3
5
W-4-W-44 4 / ″ tos over / ″ thick gypsum board on both See 1 hr. 1 23, 25, 1
8 8 Note 23 26, 27
faces.
2″ × 4″ stud wall; studs faced with 4″ wide
3
3
5
16
8
W-4-W-45 4 / ″ strips of / ″ thick gypsum board; / ″ thick See 1 hr. 1 23, 25, 1
8
27, 28
gypsum cement-asbestos board on both Note 23
faces; insulated cavities.
1 hr.
5
1
W-4-W-46 4 / ″ Same as W-4-W-45 but nonload bearing. N/A 15 min. 1 24, 28 1 / 4
8
3
2″ × 4″ stud wall; / ″ thick cement-asbes-
16
7
1
1
W-4-W-47 4 / ″ tos board over / ″ thick gypsum sheathing See 1 hr. 1 23, 25, 1 /
8 2 Note 23 15 min. 26, 27 4
on both faces.
1 hr.
7
1
W-4-W-48 4 / ″ Same as W-4-W-47 but nonload bearing. N/A 30 min. 1 24, 27 1 / 2
8
3
2″ × 4″ stud wall; Exterior face: / ″ wood
4
2
sheathing; asbestos felt 14 lbs./100 ft. and
5 / ″ cement-asbestos shingles; Interior See 18, 23,
W-5-W-49 5″ 32 3 40 min. 1 25, 26, 2 /
face: 4″ wide strips of / ″ gypsum board Note 23 29 3
8
3
over studs; wall faced with / ″ thick
16
cement-asbestos board.
2″ × 4″ stud wall; Exterior face: as per W-
9
5-W-49; Interior face: / ″ composite
16
7
W-5-W-50 5″ board consisting of / ″ thick wood fiber- See 30 min. 1 23, 25, 1 /
16 Note 23 26, 30 2
1
board faced with / ″ thick cement-asbestos
8
board; Exterior side exposed to fire.
W-5-W-51 5″ Same as W-5-W-50 but interior side See 30 min. 1 23, 25, 1 /
exposed to fire. Note 23 26 2
W-5-W-52 5″ Same as W-5-W-49 but exterior side See 45 min. 1 18, 23, 3 /
exposed to fire. Note 23 25, 26 4
3
4
W-5-W-53 5″ 2″ × 4″ stud wall; / ″ thick T&G wood See 20 min. 1 17, 23 1 / 3
boards on both sides. Note 23
Same as W-5-W-53 but with insulated See 17, 18,
W-5-W-54 5″ 35 min. 1 1 /
cavities. Note 23 23 2
3
2″ × 4″ stud wall; / ″ thick T&G wood
4
W-5-W-55 5″ boards on both sides with 30 lbs./100 ft. 2 See 45 min. 1 17, 23 3 /
Note 23 4
asbestos; paper, between studs and boards.
1
2″ × 4″ stud wall; / ″ thick, 1:2; 1:3 gyp-
2
W-5-W-56 5″ sum plaster on metal lath on both sides of See 45 min. 1 17, 21, 3 /
Note 23 34 4
wall.
(continued)
218 2018 INTERNATIONAL EXISTING BUILDING CODE ®
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