Bar Bending Schedule (BBS) is a chart which gives a clear picture of bar length, diameter of bar ,bar mark ,location of bar. It allow workers to place steel properly.

1. Bar Bending
Schedule

2. CONTENT
 Introduction
 B B S for different reinforced concrete structures
 Measurement of bending dimensions
 Do’s and Don'ts
 Typical bar bending schedule
 Codes , specifications and standards

3. Bar Bending Schedule
 Member identification
 Bar mark
 Type of steel
 Diameter of bar
 Length of each bar
 Number of members
 Number of bars in each member
 Total number of bars
 Total length
 Shape code
 Bending dimensions

4. BBS for RC Beams

5. BBS for RC Slabs

6. BBS for Columns and walls

7. Measurement of bending dimensions
Bent-up Bar
h
45o
h
h2
Additional Length = 0.414 h
Total Length = L + 0.414 h
L

8. Do’s and Don’ts
 Proper accuracy
 Provide cover to rein
 Location of holes
 Bars >36mm shall not
bundled
 Welding is not permitted
at bends

9. Typical BBS Calculation
Example: Prepare bar bending schedule for the given beam. Clear
cover = 40 mm
2-#20 +1-#15
4000
570 2-#20
2-#10
228
#10 @ 180 c/c
Longitudinal Section
1-# 15

10. Bar Bending Schedule (contd…)
Example: Prepare bar bending schedule for the given beam. Clear
cover = 40 mm
#10 @ 180 c/c
228
375
2-#10
1-# 15
2-#20
(M-2)
(M-1)
(S-1)
(H-1)
Cross Section

11. Bar Bending Schedule (contd…)
Example:
M-1
M-1 = 4000 + 2 x 228 – 2 x 40 + 2 x (18
x 20)
= 5096
M-2h = 375 – 2 x 40 – 2 x 10 – 2 (15/2) =
260
h
M-2 = 4000 + 2 x 228 – 2 x 40 + (0.414 x 260) x 2
= 5091
H-1
H-1 = 4000 + 2 x 228 – 2 x 40
= 4376

12. Bar Bending Schedule (contd…)
Example: Prepare bar bending schedule for the given beam. Clear
cover = 40 mm
Number of Bars = 4000 / 180 +1 = 24 Round-up
Shear stirrups
a
a = 375 – 2 x 40 – 10 = 285 mm
bb = 228– 2 x 40 – 10 =138 mm
Total length of S-1 = 2 (138 + 285 + 18 x 10) = 1206 mm

13. Bar Bending Schedule
Serial
#
Bar
Designation
Number
of Bars
Length
of one
Bar
(m)
Dia
of
bar
Weight of Steel
Bars
Shape of Bar
#10 #15 #20
1 M-1 2 5.096 20 24
2 M-2 1 4.591 15 7.2
3 H-1 2 4.376 10 6.9
4 S-1 24 1.206 10 22.7
1.05 Σ 31.1 7.6 25.2
Total Weight = 64 kg
4376
4376
4376
285138

14. CODES , SPECIFICATIONS & STANDARDS
 IS:2502-1963
 IS:1893-2000
 SP:34
 IS:456
 International standard
ISO:4066-1977
some websites which are proving Bar
Bending Schedule Software.
1. www.eigen-tech.com/cs.html
2. www.rgsrebar.com/rebar.aspx
3. www.ensoftindia.com/prod_barbeq
ue.htm
4. www.steelpac.co.uk/design/steelp
ac_rdm...
5. www.cadsglobal.com
6. www.supercivilcd.com
7. www.technocad.co.za
8. www.BendingSchedule.com
9. www.structural-
engineering.fsnet.co.uk...
10. www.continuousbeamanalysis.co
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