Slab Bolster & Slab Bolster Upper Slab Bolster height = 2” Length of Slab Bolster = 5+4 = 9’- 0” Number of Slab Bolster = 200/9 = 22.22 = 23+1 = 24 No. of SB = 150 - (2 X ½ Spacing) Spacing = 150...
Rebar Estimation Class :14 (Grade Beam Part - 3)
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Grade Beam
Reinforcement calculation
Beam length = 400’-0” lft
Lap length =
2’-6” lft
Cover =
3” inches
Stock length = 40’-0” lft
2#6 Continuous Top & Bottom
Step 1 =
400’-(2*3”)
=
399’-6”
=
399’-6”/40’-0”
=
9.98 round down = 9 [9]
Step 2 = 9’-0” X
2’-6”
=
22’-6” (9 X 40’) =
360’-0”
Step 3 = 399’-6” +
22’-6”
=
422’-0”
=
422’-0” – 360’-0”
= 62’-0”
Step 4 = 62’-0” –
40’-0” [1]
=
22’-0”
=
22’-0” + 2’-6”
=
24’-6”
2 #5
Cont T&B (10X2X2 = 40) (40 Bars 40’-0” lft)
2#5
odd T&B (2 X 2 = 4) (4 Bars 24’-6” lft)
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