Bar Bending Schedule of Circular Column
Bar bending schedule for circular column
what is the circular column?
the circular column is the column to use mostly for pilling and this column has used more then4 longitudinal bars of reinforcement. this column is very strong as per the square column.
now is discuss the bar bending schedule of the circular column. the bar bending schedule means the find the rebar detail in a column or any footing/foundation.detail of the rebar means the size of the rebar diameter of rebar weight of the rebar, types of rebar, and the position of rebar means how to fix the rebar in any foundation or column.
now we calculate the rebar in a circular column
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Bar Bending Schedule of Combined Footing
given data as par sketch
diameter of column =500mm
height of column =3m
dia meter of vertical bar =20mm
dia meter of leteral ties =8mm
concrete cover =25mm
spacing of leteral ties= 150mm
now calculation
verticals bar diameter 20mm
cutting length of vertical bar =height of column+16d(duck leg length-2bend (2d)
cutting length of vertical bar= 3000+16×20-2×20=3280=3.280m
no’s of vertical bar = 8
total length= cutting length × no’s of bar
total length= 3.280 × 8= 26.24m
weight of vertical bar = d²/162.25×total length
weight of vertical bar = 20²/162.25 × 26.24=64.69kg=65kg
leteral Ties diameter 8mm
No’s of letaral ties= height of column/spacing+1
No’s of letaral ties= 3000/150+1=20+1=21 nos
cutting length of ties = πd+(2×10dia of a bar)-(2×3dia of a bar)
so d= dia of letaral strips center to center of letaral strips
d =dia of column -2 concrete cover-dia of strips
d = 500-(2×25)-8= 500-(50)-8= 442mm
cutting length of letaral ties = πd+(2×10dia of a bar )-(2×3dia of a bar)
cutting length of letaral ties =(π×442)+(2×10×8)-(2×3×8)
cutting length of letaral ties =(π×442)+160-48=1500.58=1.500m
the total length of letaral ties = nos of ties × cutting length of ties
the total length of letaral ties =21×1.500=31.5m
weight of letaral ties = d²/162.25×total length
weight of letaral ties =8²/162.25×31.5=12.42kg=13kg
Bar bendiing schedule for circular column |
|||||||||
s.no | types of bar | dia od bar (mm) | no.s of bar | length (m) | total length (m) | weight (kg) | weight (kg) | ||
1 | vertical bar | 20 | 8 | 3.28 | 26.24 | 65 | (w=d2/162.25xtotal lentgh | ||
2 | lateral ties | 8 | 21 | 1.5 | 31.5 | 13 | |||
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