Bar bending schedule for footing
The bar bending schedule for the footing offers details on the overall quantity of steel rods, the length of steel rods needed, and the cutting length of a steel rod at the construction site. Let’s explore the process further.
Below is the reinforcement detail for an isolated footing, with the column measuring 2000 millimeters in length and 1500 millimeters in width. The footing has a height of 300 millimeters.
Now let us calculate the bar bending schedule for footing step by step with Complete details
Given
Diameter of the Both bars in X direction and the Y direction are 12 mm.
Clear cover of the footing is the 50 mm,
Center to Center spacing of the steel rods is 150 mm.
Step No 1 Calculate the effective length of the steel rod in X & Y direction using the formula given below.
Effective length = Total length – both sides covers.
Calculation
Effective length along of X direction = 2000 – (Two x 500) = 1900 mm
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Effective length along of Y direction = 1500 – (Two x 500) = 1400 mm
Step No 2 Calculate numbers of the bars by using formula given below.
Use Spanning of the steel rod as mentioned above.
No. of the bars along (X) direction = (1400/150) + One = 10 nos.
No. of the bars along (Y) direction = (1900/150) + One = 14 nos.
Step No 3 Calculate Cutting length of the Steel Bars using formula below
Cutting length of the bar along (X) direction:
(Effective length + bends) – bend deductions
[1900 + Two (300 – 50 – 50)] – (2 x Two x 2) = 2252 mm or 2.25 meterCutting length of the bar along (Y) direction:
(Effective length + bends) – bend deductions
[1400 + Two (300 – Fifty – 50)] – (2 x Two x 2) = 1752 mm or 1.75 meterBend deduction is the calculated as given below
Deduction of the length of the bars due to bending at the different angle:
45 Degree = One d
90 Degree = Two d
135 Degree = 3d
Where d is the diameter of steel rods.
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Step No 4 Calculate total length of the steel rods
Along (X) direction = No. of the bars x Length of one bars = 2.25 x ten = 22.5 meter
Along (Y) direction = No. of the bars x Length of the 1 bars = 1.75 x fourteen = 24.5 meter
Step No 5 Calculate the unit weight of the steel rod using formula
Step No 6 Calculate total weight of the steel rod
Total Weight of the steel = Unit weight x Total Length of the steel rod
Add five % of wastage of the steel to get actual total weight of the steel bars.
Therefore, we can determine the bar bending schedule for the footing using this method.
I trust this information proves to be beneficial for your needs.
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