÷ SLAB REINFORCEMENT # OF TIES = # OF MAIN BAR X # OF
TEMPERATURE BAR (SEE DETAILS FOR
SLAB THICKNESS(h)= 200mm INTERSECTIONS)
CONCRET COVER = 20mm = 11 X 26 + 11
# OF TIES = 297 pcs of #16 tie wire
MAIN BAR SPACING WT. OF TIES = 297X 0.3 X (1/53) = 1.68kg
OPTION1: 3h=3(200) = 600mm
AREA = 3.3 X 2.1
OPTION 2: 450mm
# OF REBAR NEEDED WITH A LENGTH OF 3.3m
= 5.6667 say 6 pcs @12mm ⌀ 3.3m
= (2.1/0.45) + 1
MAIN BAR MAXIMUM SPACING= 450mm O.C
TEMPERATURE BAR SPACING # OF REBAR NEEDED WITH A LENGTH OF 2.1m
= 8.333 say 9pcs @12mm ⌀ 2.1m
OPTION1: 5h=5(200) = 1000mm = (3.3/0.45) + 1
OPTION 2: 450mm
TEMPERATURE BAR MAXIMUM SPACING= @3.3m LENGTH OF BAR
450mm O.C USE 6m length of rebar
# OF REBAR = 6pcs @12mm ⌀ X 6m
WASTAGE LENGTH = 6m – 3.3m = 2.7m
MAIN BAR- USE 12mm ⌀ 0.45m O.C
NOTE: ONE-WAY SLAB
WT. OF REBAR = 6pcs x 6m x 0.888kg/m = 31.968kg
DISTRIBUTION BAR – USE 10mm ⌀ 0.45m O.C
@2.1 LENGTH OF BAR
USE 6m length of rebar
SLAB ON GRADE WASTAGE LENGTH = 6m – 1.8(2) = 2.4m
pcs @12mm ⌀ X 6m
# OF REBAR =use wastage from 3.3m bar length + 2
= 8pcs@12mm ⌀ X 6m
AREA = 4.3 X 11.1
# OF REBAR NEEDED WITH A LENGTH OF 4.3m
WEIGHT = 2pcs x 6m x 0.888kg/m = 10.656kg
= 25.667 say 26pcs @12mm ⌀ 4.3m
= (11.1/0.45) + 1
TIE WIRE
# OF TIES = # OF MAIN BAR X # OF
# OF REBAR NEEDED WITH A LENGTH OF 11.1m
TEMPERATURE BAR
= 10.5556 say 11pcs @12mm ⌀ 11.1m
= (4.3/0.45) + 1
=6x8
# OF TIES = 48 pcs of #16 tie wire
WT. OF TIE WIRE = 48pcs X 0.3m X (1kg/53m) =
@4.3m LENGTH OF BAR
0.27169kg
USE 6m length of rebar
# OF REBAR = 26pcs @12mm ⌀ X 6m
WASTAGE LENGTH = 6m – 4.3m = 1.7m
AREA = 1m x 9m
# OF REBAR NEEDED WITH A LENGTH OF 1m
WT. OF REBAR = 26pcs x 6m x 0.888kg/m =
= 21 pcs @12mm ⌀ x 1m
= (9/0.45) + 1
138.528kg
@11.1m LENGTH OF BAR
# OF REBAR NEEDED WITH A LENGTH OF 9m
USE 6m length of rebar
= 3.222 say 4pcs @12mm ⌀ x 9m
= (1/0.45) + 1
L= 11.1m -6m + 0.4m = 5.5m
WASTAGE LENGTH =6m – 5.5 = 0.5m
# OF REBAR= 11pcs @12mm x 6m + 11pcs
@1m length of bar (do not include to the total number of
= 22 pcs @12mm ⌀ X 6m
@12mm x 5.5m
bars just use wastage from 4.3m length
# OF REBAR = 21 pcs @12mm ⌀ x 1m
USE 6m length of rebar
WT. OF REBAR = 22pcs x 6m x 0.888kg/m =
117.216kg
WT. OF REBAR = 21pcs x 1m x 0.888kg/m =
18.648kg
TIE WIRE
LENGTH OF TIE WIRE = 0.3m
@9m length of bar
1kg = 53m
USE 6m length of rebar
L = 9 – 6 + 0.4 = 3.4m WT. OF REBAR = 10pcs X 6m X 0.888kg/m= 53.28kg
# OF REBAR = 4pcs @12mm ⌀ x 6m + 3.4 say
WASTAGE LENGTH = 6m – 1.8(2) = 2.4m
4pcs @12mm ⌀ x 3.4m
L4 = 4 + 0.195(2) = 4.39m
= 8pcs @12mm ⌀ x 6m
# OF REBARS = (2.7/0.45) + 1 = 7PCS
WASTAGE = 6m – 4.39 = 1.61 m
WT. OF REBAR = 8pcs x 6m x 0.888kg/m = 42.624kg WT. OF REBAR = 7pcs X 6m X 0.888kg/m= 37.296kg
TIE WIRE TIE WIRE
# OF TIES = # OF MAIN BAR X # OF # OF TIES = 7 x 10 = 70 PCS
TEMPERATURE BAR WT. OF TIE WIRE = 70pcs X 0.3m X (1kg/53m) =
# OF TIES = 21 x 8 0.396kg
# OF TIES =168 pcs of #16 tie wire
WT. OF TIE WIRE = 168pcs X 0.3m X (1kg/53m) =
TOP STRAIGHT BARS @ 12mm⌀ x 6m
0.951kg
L3 = 2.7 + 0.195(2) = 3.09m
# OF REBARS = (1/0.45) + 1 = 3.222 SAY 4 PCS X 2
SECOND FLOOR AND ROOF TWO-WAY SLAB = 8PCS
WASTAGE LENGTH= 2.91m
WT. OF REBAR = 8pcs X 6m X 0.888kg/m =
TWO-WAY SLAB = 2.7 / 4 = 0.675
42.624kg/m
AREA = 2.7 X 4 m
L4 = 4 + 0.195(2) = 4.39m
@LONG DIRECTION
# OF REBARS = (0.675 / 0.45) + 1 = 2.5 X 2 = 5 PCS
L/4 = 4/4 = 1m
WASTAGE LENGTH = 1.61m
L/2 = 4/2 = 2m
WT. OF REBAR = 5pcs x m x 0.888g/m = 26.6kg
@ SHORT DIRECTION
W/4 = 2.7/4 = 0.675m
TIE WIRE
W/2 = 2.7/2 = 1.35m
# OF TIES = 8 x 5 = 40 PCS
BENT BARS @ 12mm⌀ x 6m
WT. OF TIE WIRE = 40pcs X 0.3m X (1kg/53m) =
0.226kg
L1 = 2.7m + (H x 2 + BEND
H @ 12mm = 0.195m
@200 mm thk slab = 200-2(20)-12 = 0.148m
CUT BARS / EXTRA BARS
L/5 = (2.7/3) + 0.195 = 1.095m
L1 = 2.7m + 0.195 x 2 +0 .148 = 3.238m
# OF REBARS = 6-1=5x2 = 10PCS
# OF REBARS = (2/0.45) + 1 = 5.444 SAY 6PCS
WASTAGE LENGTH = USE WASTAGE FROM BST
WASTAGE = 6 – 3.238 = 2.762m
@ 3.09m and 4.39
WT. OF REBAR = 6pcs X 6m X 0.888kg/m =
WT. OF REBAR = 10pcs X 1.095 X 0.888kg/m =
31.968kg
9.7236kg
L2 = 4m +0.195(2) +0.148m = 4.538m
L6 = (4/3) + 0.195 = 1.5283m
# OF REBARS = (1.35/0.45) + 1 = 4PCS
# OF REBARS = 4-1=3x2 = 6PCS
WASTAGE = 6 – 4.538 = 1.462m
WASTAGE LENGTH = USE WASTAGE FROM TST
WT. OF REBAR = 4pcs X 6m X 0.888kg/m =
@ 3.09m
21.312kg
WT. OF REBAR = 6pcs x 1.5283m x
0.888g/m=81427kg
TIE WIRE
# OF TIES = 6 X 4 = 24PCS
TIE WIRE
WT. OF TIE WIRE = 24pcs X 0.3m X (1kg/53m) =
# OF TIES = 10 x 6 = 60 PCS
0.27169kg = 0.1358kg
WT. OF TIE WIRE = 60pcs X 0.3m X (1kg/53m) =
0.3396kg
BOTTOM STRAIGHT BARS @ 12mm⌀ x 6m TWO-WAY SLAB = 1.8/ 4 = 0.45
L3 = 2.7 + 0.195(2) = 3.09m AREA = 1.8m X 4 m
# OF REBARS = (4/0.45) + 1 = 9.89 SAY 10 PCS
WASTAGE = 6m – 3.09 = 2.91m
@LONG DIRECTION L4 = 4 + 0.195(2) = 4.39m
L/4 = 4/4 = 1m # OF REBARS = (0.45 / 0.45) + 1 = 2X 2 = 4 PCS
L/2 = 4/2 = 2m WASTAGE LENGTH =6-4.39m = 1.61m
@ SHORT DIRECTION WT. OF REBAR = 4pcs x 6 m x 0.888g/m = 21.312kg
W/4 = 1.8/4 = 0.45m
W/2 = 1.8/2 = 0.9m TIE WIRE
BENT BARS @ 12mm⌀ x 6m
# OF TIES = 8 x 4 = 32 PCS
WT. OF TIE WIRE = 32pcs X 0.3m X (1kg/53m) =
L1 = 1m + (H x 2 + BEND 0.1811kg
H @ 12mm = 0.195m
@200 mm thk slab = 200-2(20)-12 = 0.148m
CUT BARS / EXTRA BARS
L1 = 1.8m + 0.195 x 2 +0 .148 = 2.338m L/5 = (1.8/3) + 0.195 = 0.795m
# OF REBARS = (2/0.45) + 1 = 5.444 SAY 6PCS # OF REBARS = 6-1=5x2 = 10PCS
WASTAGE = 6 – 2.338 = 3.662m WASTAGE LENGTH = USE WASTAGE FROM BST
WT. OF REBAR = 6pcs X 6m X 0.888kg/m = @ 2.19 m
31.968kg WT. OF REBAR = 10pcs X 0.795 X 0.888kg/m =
9.7236kg
L2 = 4m +0.195(2) +0.148m = 4.538m
# OF REBARS = (0.9/0.45) + 1 = 3 PCS L6 = (4/3) + 0.195 = 1.5283m
WASTAGE = 6 – 4.538 = 1.462m # OF REBARS = 3-1=2x2 = 4PCS
WT. OF REBAR = 3pcs X 6m X 0.888kg/m = WASTAGE LENGTH = USE WASTAGE FROM TSB
15.984kg @ 2.19m
WT. OF REBAR = 4pcs x 1.5283m x 0.888g/m =
TIE WIRE 5.4285kg
# OF TIES = 3 X 6 = 18PCS
WT. OF TIE WIRE = 18pcs X 0.3m X (1kg/53m) = TIE WIRE
0.101886kg # OF TIES = 10 x 4 = 40 PCS
WT. OF TIE WIRE = 40pcs X 0.3m X (1kg/53m) =
BOTTOM STRAIGHT BARS @ 12mm⌀ x 6m
0.2264kg
L3 = 1.8 + 0.195(2) = 2.19m TIE WIRE
# OF REBARS = (4/0.45) + 1 = 9.89 SAY 10 PCS # OF TIES = 4 x 10 = 40 PCS
WASTAGE = 6m – 2.19 = 3.81m WT. OF TIE WIRE = 32pcs X 0.3m X (1kg/53m) =
WT. OF REBAR = 10pcs X 6m X 0.888kg/m= 53.28kg 0.1811kg
L4 = 4 + 0.195(2) = 4.39m TWO-WAY SLAB = 1/ 1.8 = 0.56
# OF REBARS = (1.8/0.45) + 1 = 5PCS AREA = 1m X 1.8 m
WASTAGE = 6m – 4.39 = 1.61 m
WT. OF REBAR = 5pcs X 6m X 0.888kg/m= 26.64kg @LONG DIRECTION
L/4 = 1.8/4 = 0.45m
TIE WIRE L/2 = 1.8/2 = 0.9m
# OF TIES = 5 x 10 = 50 PCS @ SHORT DIRECTION
WT. OF TIE WIRE = 50pcs X 0.3m X (1kg/53m) = W/4 = 1/4 = 0.25m
0.283kg W/2 = 1/2 = 0.5m
BENT BARS @ 12mm⌀ x 6m
TOP STRAIGHT BARS @ 12mm⌀ x 6m
L1 = 1m + (H x 2 + BEND
H @ 12mm = 0.195m
L3 = 1.8 + 0.195(2) = 2.19m @200 mm thk slab = 200-2(20)-12 = 0.148m
# OF REBARS = (1/0.45) + 1 = 3.222 SAY 4 PCS X 2
= 8PCS L1 = 1m + 0.195 x 2 +0 .148 = 1.538m
WASTAGE LENGTH=6- 2.91 =3.09 m # OF REBARS = (0.9/0.45) + 1 = 3 pcs
WT. OF REBAR = 8pcs X 6m X 0.888kg/m = WASTAGE = 6 – 1.538 = 4.462m
42.624kg/m WT. OF REBAR = 3pcs X 6m X 0.888kg/m =
15.984kg
WASTAGE LENGTH = USE WASTAGE FROM BB
L2 = 1.8m +0.195(2) +0.148m = 2.338m @ 1.538 m
# OF REBARS = (0.5/0.45) + 1 = 3 PCS WT. OF REBAR = 4pcs X 0.5283 X 0.888kg/m =
WASTAGE = 6 – 2.338 = 3.662m 1.8765kg
WT. OF REBAR = 3pcs X 6m X 0.888kg/m =
15.984kg L6 = (1.8/3) + 0.195 = 0.795m
# OF REBARS = 3-1=2x2 = 4PCS
TIE WIRE WASTAGE LENGTH = USE WASTAGE FROM TSB
# OF TIES = 3 X 3 = 9PCS @ 1.39m
WT. OF TIE WIRE = 9pcs X 0.3m X (1kg/53m) = WT. OF REBAR = 4pcs x 0.795m x 0.888g/m =
0.1kg 2.8238kg
BOTTOM STRAIGHT BARS @ 12mm⌀ x 6m
TIE WIRE
# OF TIES = 4 x 4 = 16 PCS
L3 = 1 + 0.195(2) = 1.39m WT. OF TIE WIRE = 16pcs X 0.3m X (1kg/53m) =
# OF REBARS = (1.8/0.45) + 1 = 5pcs 0.1kg
WASTAGE = USE WASTAGE FROM BB @ 2.338m
WT. OF REBAR = 5pcs X 1.39m X 0.888kg/m= TWO-WAY SLAB = 1.8/ 2.3 = 0.78
6.17168kg AREA = 1.8m X 2.3 m
L4 = 1.8+ 0.195(2) = 2.19m @LONG DIRECTION
# OF REBARS = (1/0.45) + 1 = 3.22 SAY 4PCS L/4 = 2.3/4 = 0.575m
WASTAGE = 6m – 2.19 = 3.81 m L/2 = 2.3/2 = 1.15m
WT. OF REBAR = 4pcs X 6m X 0.888kg/m= 21.312kg @ SHORT DIRECTION
W/4 = 1.8/4 = 0.45m
TIE WIRE W/2 = 1.8/2 = 0.9m
BENT BARS @ 12mm⌀ x 6m
# OF TIES = 5 x 4 = 20 PCS
WT. OF TIE WIRE = 20pcs X 0.3m X (1kg/53m) =
0.1132kg L1 = 1.8m + (H x 2 + BEND
H @ 12mm = 0.195m
@200 mm thk slab = 200-2(20)-12 = 0.148m
TOP STRAIGHT BARS @ 12mm⌀ x 6m L1 = 1.8m + 0.195 x 2 +0 .148 = 2.338m
L3 = 1 + 0.195(2) = 1.39m # OF REBARS = (1.15/0.45) + 1 = 3.6 SAY 4PCS
# OF REBARS = (0.45/0.45) + 1 = 2X2 = 4PCS WASTAGE = 6 – 2.338 = 3.662m
WASTAGE LENGTH=6- 1.39 =4.61m WT. OF REBAR = 6pcs X 6m X 0.888kg/m =
WT. OF REBAR = 4pcs X 6m X 0.888kg/m = 31.968kg
21.312kg
L4 = 1.8 + 0.195(2) = 2.19m L2 = 2.3m +0.195(2) +0.148m = 2.838m
# OF REBARS = (0.25 / 0.45) + 1 = 1.555=2X 2 = 4 # OF REBARS = (0.9/0.45) + 1 = 3 PCS
PCS WASTAGE = 6 – 2.838 = 3.162m
WASTAGE LENGTH =6-2.19 = 3.81m WT. OF REBAR = 3pcs X 6m X 0.888kg/m =
WT. OF REBAR = 4pcs x 6 m x 0.888g/m = 21.312kg 15.984kg
TIE WIRE TIE WIRE
# OF TIES = 4x 4 = 16 PCS # OF TIES = 4 X 3 = 12PCS
WT. OF TIE WIRE = 16pcs X 0.3m X (1kg/53m) = WT. OF TIE WIRE = 12pcs X 0.3m X (1kg/53m) =
0.1kg 0.1kg
CUT BARS / EXTRA BARS BOTTOM STRAIGHT BARS @ 12mm⌀ x 6m
L/5 = (1/3) + 0.195 = 0.5283m L3 = 1.8 + 0.195(2) = 2.19m
# OF REBARS = 3-1=2x2 = 4PCS # OF REBARS = (2.3/0.45) + 1 = 6.111 SAY 7 PCS
WASTAGE = USE WASTAGE FROM BB @ 2.338m SECOND FLOOR ONE WAY SLAB =9/1 = 9
AND BB @ 2.838 AREA = 9 X 1 = 9 sq.m
DELELOPMENT LENGTH = 40d
WT. OF REBAR = 7pcs X 2.19m X 0.888kg/m=
#OF MAIN BARS = (9/0.45) + 1 = 21Pcs @12mm ⌀ X
13.613kg @1m LENGTH OF REBAR – SHORT DIRECTON
L4 = 2.3+ 0.195(2) = 2.69m 1m
# OF REBARS = (1.8/0.45) + 1 = 5PCS CUTTING LENGTH OF MAIN BAR =Ly + 2Ld + 1 x
WASTAGE = 6m – 2.69 = 3.31 m inclined length- 45degree x 2
WT. OF REBAR = 5pcs X 6m X 0.888kg/m= 26.64kg = 1000 + (2 x 40 x 12) + (1 x 0.42 x D)- (1d X 2)
TIE WIRE D = SLB. THK – 2 CONCRETE COVER – BAR DIA.
# OF TIES = 5 x 7 = 35 PCS = 200 – 2(20) -12 = 148mm
WT. OF TIE WIRE = 35pcs X 0.3m X (1kg/53m) =
0.2kg = 1000 + (2 x 40 x 12) + (1 x 0.42 x 148)- (12X 2)
= 1998.16mm OR 1.99816m
TOP STRAIGHT BARS @ 12mm⌀ x 6m
TOTAL LENGTH OF MAIN BARS = 1.99816 X 21 pcs
= 41.96136m
@12mm ⌀ x 6m
L3 = 1.8 + 0.195(2) = 2.19m #OF REBAR = 41.96136 / 6 = 6.99356 pcs SAY 7 pcs
# OF REBARS = (0.575/0.45) + 1 = 2.227 X2 = 4.454
SAY 5 PCS WT. OF REBAR = 7pcs X 6m x 0.888kg/m = 37.296kg
WASTAGE LENGTH=6- 2.19 = 3.81m
WT. OF REBAR = 5pcs X 6m X 0.888kg/m = 26.64kg @9m LENGTH OF REBAR – LONG DIRECTION
#OF DISTRIBUTION. BARS = (1/0.45) + 1 = 3.222 pcs
L4 = 2.3+ 0.195(2) = 2.69m SAY 4 pcs
# OF REBARS = (0.45 / 0.45) + 1 = 2 X2 = 4PCS CUTTING LENGTH OF TEMP. BAR =Lx + 2Ld
WASTAGE LENGTH =6-2.69 = 3.831m = 9000 + 2 X 40 X 10mm = 9800mm OR 9.8m
WT. OF REBAR = 4pcs x 6 m x 0.888g/m = 21.312kg TOTAL LENGTH OF TEMP. BARS = 9.8 X 4pcs =
39.2m
⌀ x 6m
TIE WIRE #OF REBAR = 39.2 / 6 = 6.533 pcs SAY 7 pcs @12mm
# OF TIES = 4x 5= 20 PCS
WT. OF TIE WIRE = 20pcs X 0.3m X (1kg/53m) = WT. OF REBAR = 7pcs X 6m x 0.616kg/m = 25.872kg
0.1132kg
TOP STRAIGHT BARS
L/4 = ¼ =0.25
CUT BARS / EXTRA BARS # OF REBARS = (0.25/ 0.45) + 1 = 1.555 SAY 5 pcs
L/5 = (1.8/3) + 0.195 = 0.795m LENGTH OF TOP BAR = LENGTH OF TEMP. BARS
# OF REBARS = 49/6 = 8.1667 SAY 9 pcs @12mm ⌀
# OF REBARS = 4-1=3x3 = 6PCS TOTAL LENGTH OF TOP BAR = 9.8 X 5 = 49 m
WASTAGE LENGTH = USE WASTAGE FROM TSB
@ 2.19 m x 6m
WT. OF REBAR = 6pcs X 0.795X 0.888kg/m = WT. OF REBAR = 9pcs X 6m x 0.616kg/m = 33.264kg
4.236kg
TIE WIRE
L6 = (2.3/3) + 0.195 = 0.962m # OF TIES = 7x7= 49 PCS + 9 x 7 = 112pcs
# OF REBARS = 3-1=2x2 = 4PCS WT. OF TIE WIRE = 112 pcs X 0.3m X (1kg/53m) =
WASTAGE LENGTH = USE WASTAGE FROM TSB 0.634kg
@ 2.69
WT. OF REBAR = 4pcs x 0.962m x 0.888g/m
=3.417kg
TIE WIRE
# OF TIES = 4 X 6= 24 PCS
WT. OF TIE WIRE = 24pcs X 0.3m X (1kg/53m) =
0.136kg
