Page 192 - ICC IEBC 2018

RESOURCE A

FIGURE 1.1.2
MASONRY WALLS
4″ TO LESS THAN 6″ THICK

NUMBER OF
ASSEMBLIES
99
15
71 104
70 103
62 110 95
56 92 90 The number in each box is
keyed to the last number in the
55 106 91 105 86 tem Code column in the Table.
10
51 88 84 97 98 79 For example:
50 109 77 81 87 96 35 W-5-M-108
41 76 74 80 85 89 31
100 43 72 73 75 78 68 25
94 42 63 64 65 69 67 20 102
5
93 41 58 59 60 66 22 12 101 108
54 40 57 53 45 61 21 11 83 30
46 37 52 49 44 32 13 10 15 82 29
39 16 48 33 34 9 8 6 14 26 27 107
38 36 4 24 17 2 3 5 1 7 23 19 18 28
0
0 1 2 3 4

FIRE RESISTANCE RATING (HOURS)
TABLE 1.1.2
MASONRY WALLS
4″ TO LESS THAN 6″ THICK
PERFORMANCE REFERENCE NUMBER
ITEM REC.
CODE THICKNESS CONSTRUCTION DETAILS LOAD TIME PRE- BMS-92 POST- NOTES HOURS
BMS-92 BMS-92
Solid 3″ thick, gypsum blocks laid in 1:3 sanded gyp-
1
W-4-M-1 4″ sum mortar; Facings: / ″ of 1:3 sanded gypsum plaster N/A 2 hrs. 1 1 2
2
(both sides).
1
W-4-M-2 4″ Solid clay or shale brick. N/A 1 hr. 1 1, 2 1 /
15 min 4
1
W-4-M-3 4″ Concrete; No facings. N/A 1 hr. 1 1 1 /
30 min. 2
W-4-M-4 4″ Clay tile; Illinois surface clay; single cell thick; No face N/A 25 min. 2 3-7, 36 1 /
plaster; Design “B,” Construction “C.” 3
3
W-4-M-5 4″ Solid sand-lime brick. N/A 1 hr. 1 1 1 /
45 min. 4
1
3
Solid wall; 3″ thick block; / ″ plaster each side; 17 / ″ ×
1 hr.
4
2
3
3
W-4-M-6 4″ 8 / ″ × 4″ “Breeze Blocks”; portland cement/sand mor- N/A 52 min. 7 2 1 / 4
4
tar.
3
W-4-M-7 4″ Concrete (4020 psi); Reinforcement: vertical / ″; hori- N/A 2 hrs. 7 2 2
8
1
zontal / ″; 6″ × 6″ grid. 10 min.
4
1
2
4
W-4-M-8 4″ Concrete wall (4340 psi crush); reinforcement / ″ diam- N/A 1 hr. 7 2 1 /
eter rebar on 8″ centers (vertical and horizontal). 40 min. 3
(continued)
2018 INTERNATIONAL EXISTING BUILDING CODE ® 173
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