Share
Get Access to:
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Bar Bending Schedule for Beam:
Consider the beam has a clear span of 6m consisting of two bottom layers (2 no’s of 20 mm dia. and 2 no’s 18 mm dia.) and a top layer ( 2 no’s 16 mm dia.).
Stirrup is provided in 3 zones where 1 & 3 have 8mm dia. test31405652 mm c/c and 2 has 8mm dia. test15211901mm c/c.
Given:
Step 1: Calculation cutting length of top bar
Cutting length of top bar = clear span + development length – bend
Cutting length = L + (2 x Ld) – (2 x 2d)
= 6000 + (2 x 50 x 16) – (2 x 16)
=7568 mm
Step 2: Calculation cutting length of bottom bar
For first layer (20 dia.)
Cutting length = L + (2 x Ld) – (2 x 2d)
= 6000 + (2 x 50 x 20) – (2 x 20)
= 6920 mm
For first layer (18 dia.)
Cutting length = L + (2 x Ld) – (2 x 2d)
= 6000 + (2 x 50 x 18) – (2 x 18)
= 7764 mm
Step 3: Calculation number of stirrup
There are 3 zones first we need to calculate the length of each zone = L/3 = 6000/3 = 2000 mm
Number of stirrup for zone 1st and 3rd = (clear span / spacing ) + 1
= (2000/140) + 1 = 15.28 or 16 no’s
No. of stirrup for zone 2nd = (2000/190) – 1 = 9.52 or 10 no’s
Step 4: Cutting length of stirrup
Cross section of stirrup is 300x500mm
Effective depth (d) = 500 – (2 x 30) – (2 x 4)
= 432 mm
Cross section of stirrup is 300x500mm
Effective width (b) = 300 – (2 x 30) – (2 x 4)
= 232 mm
Cutting length = 2 (d + b) + hook – bend
= 2 x (432 + 232) + (9 x 8 x 2) – (2 x 8 x 3)
= 1424 mm = 1.42 m
Step 5: Calculate the weight of stirrup:
Total no. of stirrup = 16 + 16 + 10 = 42 no’s
Total length of stirrup = 1.42 x 42 = 59.64 m
Total weight of stirrup = 8 x 8 x 59.64/162 = 23.56 or 24 kg
Step 6: BBS of Beam:
(mm)
m
m
kg