BT4: QUANTITY SURVEYING AND COST ESTIMATING PT. 2
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32 Terms
75
[concrete cover] Concrete cast against and permanently exposed to earth
50
[concrete cover] Concrete exposed to earth or weather:
20 mm through 36 mm bars
40
[concrete cover] Concrete exposed to earth or weather:
16 mm bar, W31 or D31 wire and smaller
20
[concrete cover] Concrete not exposed to weather or in contact with ground: Slabs, Walls, Joists, 32 mm bar and smaller
40
[concrete cover] Beams, Columns: Primary reinforcement, ties,
stirrups, spirals
20
[concrete cover] Shell, Folded Plate members:
20 mm bar and larger
15
[concrete cover] Shell, Folded Plate members:
16 mm bar, W31 or D31 Wire and smaller
20
[concrete cover] Concrete exposed to earth or weather:
Wall panels: 32 mm bar and smaller
40
[concrete cover] Other Members:
20 mm bar through 32 mm bar
30
[concrete cover] Other Members:
16 mm bar, W31 or D31 Wire and smaller
15
[concrete cover] Concrete not exposed to weather or in contact with ground:
Slabs, Walls, Joists: 32 mm bar and smaller
15, 40
[concrete cover] Beams, Columns: Primary Reinforcement
db but not less than
___ and need not exceed ____
10
[concrete cover] Ties, Stirrups, Spirals
15
[concrete cover] Shells, Folded Plate members:
20 mm bar and larger
10
[concrete cover] Shells, Folded Plate members:
16 mm bar, W31 or D31 Wire, and smaller
75
[concrete cover] Concrete cast against and permanently exposed to earth
25
[concrete cover] Concrete exposed to earth or weather:
Wall Panels, Slabs, Joists
40
[concrete cover] Concrete exposed to earth or weather:
Other Members
20
[concrete cover]
Concrete not exposed to weather or in contact
with ground:
Slabs, Walls, Joists
40
[concrete cover]
Concrete not exposed to weather or in contact
with ground:
Beams, Columns:
25
[concrete cover]
Concrete not exposed to weather or in contact
with ground:
Primary Reinforcement
10
[concrete cover]
Concrete not exposed to weather or in contact
with ground:
Ties, Stirrups, Spirals
db but not less than 20
[concrete cover]
Concrete not exposed to weather or in contact
with ground:
Shells, Folded Plate Member:
16 mm bar, W31 or D31 Wire, and smaller
Other Reinforcement
6 mm
[rebar] no. 2
10 mm
[rebar] no. 3
12 mm
[rebar] no. 4
16 mm
[rebar] no. 5
20 mm
[rebar] no. 6
25 mm
[rebar] no. 8
28 mm
[rebar] no. 9
32 mm
[rebar] no. 10
36 mm
[rebar] no. 11
