Bar Bending Schedule For Slab | Forces on Slab | Fineness test for cement by Sieve method | Steps for Bar Bending Schedule of Slab
Bar Bending Schedule For Slab | Forces on Slab | Fineness test for cement by Sieve method | Steps for Bar Bending Schedule of Slab
Bar Bending Schedule for Slab:
- Use less cutting of steel and provide desirable lapping.
- Lap another steels at same time.
- Don’t Overlap at the same position/ place.
- Between the laps end to end spacing should be provided.
- Details from the diagram:
- Thickness of slab is150 mm
- Development Length is 50d
- Bottom bar of slab will be provided 12 mm dia of steel is at 200 mm center to center spacing
- Top bar of slab will be provided 12 mm dia of steel is at 200 mm center to center spacing
- Extra bar of slab at x- axis will be provided 12 mm dia of steel is at 125 mm center to center spacing
- Extra bar of slab at y- axis will be provided 12 mm dia of steel is at 125 mm center to center spacing
- Stirrup spacing is 8mm @ 150 mm C/C
- Number of steel
- Cut length of steel
- Find out lapping
- B.B.S
How To Calculate The weight of Steel With Formula
Cut Length of Main Bar
Length of Main bar = slab length – 2(concrete cover) + Development length (Ld) + Overlap Length
= 5000 – 2(25) + (12×12) + (50×12)
= 5694 mm or 5.69 m
Now we find the length of bar
The total length of Main bar = 5694 x number of steels in slab
The total length of bar = 5694 x 26
The total length of bar = 148044 mm or 148 meter
Cut Length of Distribution Bar
Length of Distribution bar = slab length – 2(concrete cover) + Development length (Ld) + Overlap Length
= 5000 – 2(25) + (12×12) + (50×12)
= 5694 mm or 5.69 m
Now we find the length of bar
The total length of Distribution bar = 5694 x number of steels in slab
The total length of Distribution bar = 5694 x 26
The total length of bar = 148044 mm or 148 meter
How to calculate the cutting length of reinforcement bars in circular R.C.C slab
Cut Length of Extra Bar at x-axis
Total Length of extra bar = Length of extra bar – concrete cover
= 1500 – 2(25)
= 1450 mm or 1.450 meter
Now we find the length of bar
The total length of extra bar at x- axis = 1450 x number of extra bar in slab
The total length of bar = 1450 x 41
The total length of bar = 59450 mm or 59.45 meter
Cut Length of Extra Bar at y-axis
Length of Extra Bar at y-axis = slab length – 2(concrete cover)
= 1500 – 2(25)
= 1450 mm or 1.40 m
Now we find the length of bar
The total length of Extra bar = 1450 x number of extra bar in slab
The total length of bar = 1450 x 41
The total length of bar = 59450 mm or 59.45 meter
Learn More
How To Calculate The Cutting Length Of Chair-bar In Footings
Find out lapping
Main Bar
length of lapping is 50d
Lapping length = 50 x Dia of steel
Length of lapping = 50×12 = 600 mm.
We know that the length of typical steel is 12.25 m or 40 feet length
Total Length of Main Bar = 148044 m that is more than 12.25 m or 40 feet so lapping should be provided.
Length of lapping is 600 mm the result will be 148044 + 600 = 148644 m
It is mentioned already in this article, consider the points while lapping the bar. There is no one right process we can use. Just remember the lines.
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