Page 285 - ICC IEBC 2018

RESOURCE A

TABLE 3.2—continued
FLOOR/CEILING ASSEMBLIES—STEEL STRUCTURAL ELEMENTS
ITEM MEMBRANE PERFORMANCE REFERENCE NUMBER REC.
CODE THICKNESS CONSTRUCTION DETAILS LOAD TIME PRE-BMS-92 BMS-92 POST-BMS-92 NOTES HOURS
Floor: 2″ reinforced concrete or 2″ precast
3
reinforced gypsum tile; Ceiling: / ″ portland
4
cement-sand plaster 1:2 for scratch coat and
1 hr.
See
1
F/C-S-29 3 / ″ 1:3 for brown coat with 15 lbs. hydrated lime Note 12 30 min. 1 12, 13, 1 / 2
4
14
and 3 lbs. of short asbestos fiber bag per
3
cement or / ″ sanded gypsum plaster 1:2 for
4
scratch coat and 1:3 for brown coat.
1
Floor: 2 / ″ reinforced concrete or 2″ rein-
4
1
F/C-S-30 3 / ″ forced gypsum tile; the latter with / ″ mortar See 2 hrs. 1 12, 13, 2
4
3
4
14
finish; Ceiling: / ″ sanded gypsum plaster; Note 12
4
1:2 for scratch coat and 1:3 for brown coat.
1
Floor: 2 / ″ reinforced concrete or 2″ rein-
2
1
forced gypsum tile; the latter with / ″ mortar See 2 hrs. 12, 13,
4
1
3
F/C-S-31 3 / ″ finish; Ceiling: 1″ neat gypsum plaster or / ″ Note 12 30 min. 1 14 2 / 2
4
4
gypsum-vermiculite plaster, ratio of gypsum
to fine vermiculite 2:1 to 3:1.
1
Floor: 2 / ″ reinforced concrete or 2″ rein-
2
1
forced gypsum tile; the latter with / ″ mortar
See
2
3
F/C-S-32 3 / ″ finish; Ceiling: 1″ neat gypsum plaster or / ″ Note 12 3 hrs. 1 12, 13, 3
4
4
14
gypsum-vermiculite plaster, ratio of gypsum
to fine vermiculite 2:1 to 3:1.
1
Floor: 2 / ″ reinforced concrete or 2″ rein-
2
1
forced gypsum slabs; the latter with / ″ mor- See 12, 13,
2
F/C-S-33 1″ tar finish; Ceiling: 1″ gypsum-vermiculite 4 hrs. 1 4
Note 12 14
plaster applied on metal lath and ratio 2:1 to
3:1 gypsum to vermiculite by weight.
Floor: 2″ reinforced concrete or 2″ precast
reinforced portland cement concrete or gyp-
sum slabs; precast slabs to be finished with
1
F/C-S-34 2 / ″ 1 / ″ mortar top coat; Ceiling: 2″ precast rein- See 4 hrs. 1 12, 13, 4
2 4 Note 12 14
forced gypsum tile, anchored into beams
with metal ties or clips and covered with / ″
1
2
1:3 sanded gypsum plaster.
Floor: 1:3:6 portland cement, sand and gravel
concrete applied directly to the top of steel
units and 1 / ″ thick at top of cells, plus
1
2
1
F/C-S-35 1″ 1 / ″ 1:2 / ″ cement-sand finish, total thick- See 3 hrs. 1 15, 16, 3
2
2
ness at top of cells, 2″ ; Ceiling: 1″ neat Note 15 17, 18
gypsum plaster, back of lath 2″ or more from
underside of cellular steel.
Floor: same as F/C-S-35; Ceiling: 1″ gyp-
F/C-S-36 1″ sum-vermiculite plaster (ratio of gypsum to See 4 hrs. 1 15, 16, 4
vermiculite 2:1 to 3:1), the back of lath 2″ or Note 15 17, 18
more from under-side of cellular steel.
Floor: same as F/C-S-35; Ceiling: 1″ neat
F/C-S-37 1″ gypsum plaster; back of lath 9″ or more from See 4 hrs. 1 15, 16, 4
Note 15 17, 18
underside of cellular steel.
Floor: same as F/C-S-35; Ceiling: 1″ gyp-
F/C-S-38 1″ sum-vermiculite plaster (ratio of gypsum to See 5 hrs. 1 15, 16, 5
vermiculite 2:1 to 3:1), the back of lath being Note 15 17,18
9″ or more from underside of cellular steel.
(continued)
266 2018 INTERNATIONAL EXISTING BUILDING CODE ®
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