Page 233 - 2018_Complete_14_Collection (1)_Neat

FIRE AND SMOKE PROTECTION FEATURES

TABLE 722.5.1(7) TABLE 722.5.1(8)
MINIMUM COVER (inch) FOR STEEL COLUMNS ENCASED IN MINIMUM COVER (inch) FOR STEEL COLUMNS
NORMAL-WEIGHT CONCRETE [FIGURE 722.5.1(6)(c)] ENCASED IN STRUCTURAL LIGHTWEIGHT CONCRETE a
a
FIRE-RESISTANCE RATING (hours) [FIGURE 722.5.1(6)(c)]
STRUCTURAL SHAPE FIRE-RESISTANCE RATING (HOURS)
1 1 1 / 2 2 3 4 STRUCTURAL SHAPE
W14 × 233 2 1 1 1 / 2 2 3 4
1 / W14 × 233 1
1
× 176 1 2 1 /
1
× 193 2
1
× 132 1 2 / 2 1 1
× 90 1 2 × 74 1 1 1 / 2 2
× 61
× 61 2 /
1
1 / × 43 1 / 2 2
1
1
× 48 2 3 2
1
1 / 2 / W12 × 65 1 / 2
1
1
× 43 2 2 1 2
× 53 1 1
W12 × 152 2 2 1 /
1
1 1 2 / × 40 1 / 2
1
× 96 2 2 2
W10 × 112
× 65 1 1 / 2
1
× 88 1 2
1
1
× 50 1 / 2 1 / 2 2 / 3 1 1
1
× 40 2 × 60 2 2 1 /
1
× 33 1 / 2
W10 × 88 1 2 2
1
W8 × 35 2 /
× 49 3 2 2
1
1 / × 28 1
1
× 45 1 / 2 2 1 1 /
1
1 2 1 / × 24 2 3
× 39 2 2 /
1
1
3 / × 18 1 / 2
1
× 33 2 2 2
For SI: 1 inch = 25.4 mm.
W8 × 67
1 3 a. The tabulated thicknesses are based on the assumed properties of
1
1
× 58 1 / 2 2 / 2 structural lightweight concrete given in Table 722.5.1(2).
× 48
1
1
× 31 3 / 2
1
1 /
× 21 2 2 3
× 18 4
1
1
W6 × 25 1 / 2 2 3 3 / 2
× 20 1
× 16
2 2 1 / 4
1
× 15 2 3 / 2
1 /
1
× 9 2
For SI: 1 inch = 25.4 mm.
a. The tabulated thicknesses are based on the assumed properties of normal-
weight concrete given in Table 722.5.1(2).
206 2018 INTERNATIONAL BUILDING CODE ®
Copyrighted © 2017 by, or licensed to, ICC (ALL RIGHTS RESERVED); licensed to UL, LLC pursuant to License Agreement with ICC. No further reproductions authorized or distribution authorized.
ANY UNAUTHROIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT; AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.