6
Table C-Steel columns and beams.
Minimum thickness of protection in inches for
Construction and Materials
4
SOLD PROTECTION,
Columuzy
period of
2
+ hours., hours. hour. hour.
Concrete not inferior to that designated
Grade UT in by-law 3.07 and reinforced
*The thickness of protection on any pro- jecting cleat, projecting rivet, bead and the like nood not exceed I inch.
21*
2*
Solid bricks of burnt clay or sand lime Solid blocks: reinforced in every horizontal
joint
3
2
Foamed slag or pumice conspere ... () Gypsum blocks
24
2
2
2
+
Sprayed Asbestos
Bearu.
Concrete not inferior to that designated
#Re
H
N N
2
Table C-Steel columns and beams(contd.).
Construction and Materials
HOLLOW PROTECTION=-(Contd.)
Columns(Cond)
Gypsum plaster on metal lathing
Gypsum plaster on 3/8 inch gypsum plaster board with No, 16 S.W.G, wire binding
at 4 inches pitch Gypsum plaster on † inch gypsum plaster board with No. 16 S.W.G. wire binding at 4 inches pitch
Two layers of metal lathing plastered with
gypsum plaster on each layer, each ******* Precast concreto consisting of 4 volumes of
vermiculite (o 1 volume of Portland Cement, reinforced with expanded metal, wire mesh or with Mo, 16 5.W.G. wire binding at 4 inches pitch
Beans.
Minimum thickness of protection in inches for
period of
1
2
1 +
hours, hours. hour, hour.
Grade III in by-law 3.07 and reinforced
*The thickness of protection on the upper surface of the upper flange of an internal beam, and on any projecting cleat, pro- jecting rival head and the like need not exceed 1 inch.
Sprayed Asbestos
Hollow PROTECTION,
Columns.
Solid bricks of bumi clay or sand lime: reinforced in every horizontal joint
អ
24
2"
1
1
44
2
Solid bricks of foamed slag or pumice
concrete or gypsum: reinforced in every horizontal joint
3
2
2
Moulded asbestos bound in position with
nicrome wire not less than No. 16 S.W.G. in thickness. the wires to be sunk in grooves not less than 1/8 inch deep in the outer surface of the asbestos and the grooves and all joints in the asbestos to be filled with refractory cemenl Cement plaster or cement-me plaster on
metal lathing
3
21
#
Cement plaster or cement-lime plaster on
metal lathing with reinforcement over rendering coat
+++++++++++0
Moulded asbestos bound in position with
nicrome wire not less than No. 16 S.W.G. in thickness, the wires to be sunk in grooves not less than 1/8 inch deep in the outer surface of the asbestos and the grooves and all joints in the asbestos to be filled with refimctory cement Cement plaster or cement-lime plaster on
metal lathing
21
11
Cement plaster de cement-lime plaster on
metal lathing with reinforcement over the rendering cost
Gypsum plaster on metal lathing Gypsum plaster on 3/8 inch gypsum plaster board with No. 16 S.W.G, wire binding at 4 inches pitch
Gypsum plaster on 3/8 inch gypsum plaster
board supported on wood batteos..................................
Gypsum plaster on † inch gypsum plaster board with No. 16 5.W.G. wire binding at 4 inches pitch
Precast concrete consisting of 4 volumes of
vermiculite to 1 volume of Portlund Cement, reinforced with expanded metal, wire mesh or with No. 16 S.W.G. wire binding at 4 inches pitch.......
2
(Ch Finale com
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