Page 227 - ICC IEBC 2018

RESOURCE A

TABLE 1.2.1—continued
METAL FRAME WALLS
0″ TO LESS THAN 4″ THICK
PERFORMANCE REFERENCE NUMBER REC.
ITEM CODE THICKNESS CONSTRUCTION DETAILS NOTES
LOAD TIME PRE-BMS-92 BMS-92 POST-BMS-92 HOURS
Solid wall: steel channel per Note 2; 2 / ″
1
2
1
W-2-Me-20 2 / ″ thickness of 1:2; 1:2 gypsum plaster on N/A 1 hr. 1 1
2
metal lath.
Solid wall: steel channel per Note 2; 2 / ″
1
2
1
W-2-Me-21 2 / ″ thickness of 1:2; 1:3 gypsum plaster on N/A 1 hr. 1 1
2
metal lath.
Core: steel channel per Note 2; 1:2; 1:2
3
W-3-Me-22 3″ gypsum plaster on / ″ soft asbestos lath; N/A 45 min. 1 3 / 4
4
plaster thickness 2″.
Solid wall: steel channel per Note 2; 2 / ″
1
2
1
3
W-3-Me-23 3 / ″ thickness of 1:2; 1:2 gypsum plaster on / ″ N/A 1 hr. 1 1
2
4
asbestos lath.
Solid wall: steel channel per Note 2; lath
over and 1:2 / ; 1:2 / gypsum plaster on 1″
1
1
1
W-3-Me-24 3 / ″ 2 2 N/A 1 hr. 1 1
2 magnesium oxysulfate wood fiberboard;
1
plaster thickness 2 / ″.
2
Core: steel studs; see Note 4; Facings: / ″
3
4
1
1
1
W-3-Me-25 3 / ″ thickness of 1: / :2; 1: / : 3 portland cement N/A 45 min. 1 3 /
2 30 30 4
and asbestos fiber plaster.
Core: steel studs; see Note 4; Facings: both
3
1
W-3-Me-26 3 / ″ sides / ″ thickness of 1:2; 1:3 portland N/A 30 min. 1 1 /
2 4 2
cement.
1
1
W-3-Me-27 3 / ″ Core: steel studs; see Note 4; Facings: both N/A 1 hr. 30 1 1 /
3
2 sides / ″ thickness of neat gypsum plaster. min. 2
4
Core: steel studs; see Note 4; Facings: both 1 hr. 15
1
1
1
3
1
W-3-Me-28 3 / ″ sides / ″ thickness of 1: / ; 1: / gypsum N/A min. 1 1 / 4
2
2
2
4
plaster.
Core: steel studs; see Note 4; Facings: both
1
3
W-3-Me-29 3 / ″ sides / ″ thickness of 1:2; 1:2 gypsum plas- N/A 1 hr. 1 1
4
2
ter.
Core: steel studs; see Note 4; Facings: both
3
1
W-3-Me-30 3 / ″ sides / ″ thickness of 1:2; 1:3 gypsum N/A 45 min. 1 3 / 4
2
4
plaster.
Core: steel studs; see Note 4; Facings: both
1
7
3
1
W-3-Me-31 3 / ″ sides / ″ thickness of 1: / : 2; 1: / : 3 N/A 1 hr. 1 1
4
30
30
8
portland cement and asbestos fiber plaster.
Core: steel studs; see Note 4; Facings: both
7
3
W-3-Me-32 3 / ″ sides / ″ thickness of 1:2; 1:3 portland N/A 45 min. 1 3 / 4
8
4
cement.
3
W-3-Me-33 3 / ″ Core: steel studs; see Note 4; Facings: both N/A 2 hrs. 1 2
7
4 sides / ″ thickness of neat gypsum plaster.
8
Core: steel studs; see Note 4; Facings: both
1
1
7
3
1
W-3-Me-34 3 / ″ sides / ″ thickness of 1: / ; 1: / gypsum N/A 1 hr. 30 1 1 / 2
2
2
8
4
min.
plaster.
(continued)
208 2018 INTERNATIONAL EXISTING BUILDING CODE ®
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