Calculate Center To Center Distance Between The Bars In Column – Beam And slab
Let us calculate the C / C distance between the reinforcement bars for the column section drawing as shown below.
Given dataÂ :
Column width = 480mm.
Column depth = 300mm.
Clear cover = 40mm.
Corner rebar diameter = 16mm.
Mid rebar diameter = 12mm.
No. of rebars = 10nos.
Stirrup bar diameter = 8mm.
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Now, we will find out the spacing of the bars in both directions, i.e. the value ofÂ x & yÂ as shown in the drawing.
First, we will calculateÂ yÂ where,
y = [column width – {(2nos.Ã— cover) +( 2nos.Ã— dia. of stirrup bar ) +(2nos.Ã—1/2 dia. of corner bar)}]Â Ã·[ no. of bars in width side 1]
= [ 480mm – {( 2nos. Ã— 40mm ) + ( 2nos. Ã— 8mm ) + ( 2nos. Ã— 1/2 Ã— 16mm )}] Ã· [4 1]
=Â [ 480mm – { 80mm + 16mm + 16mm }] Ã· 3
= [ 480mm – 112mm ] Ã· 3
= 368mm Ã· 3
=Â 122.66mm.
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Bar Bending Schedule Of Plinth Beam
xÂ = [column depth – {(2nos.Ã— cover) +( 2nos.Ã— dia. of stirrup bar ) +(2nos.Ã—1/2 dia. of corner bar)}]Â Ã·[ no. of bars in depth side 1]
= [ 300mm – {( 2nos. Ã— 40mm ) + ( 2nos. Ã— 8mm ) + ( 2nos. Ã— 1/2 Ã— 16mm )}] Ã· [3 1]
=Â [ 300mm – { 80mm + 16mm + 16mm }] Ã· 2
= [ 300mm – 112mm ] Ã· 2
= 188mm Ã· 2
=Â 94mm.
The centertocenter distance of bars in the column isÂ y = 122.66mm. & x = 94mm.
Note:
1. By using this method, you can calculate the centertocenter distance between all types of structural members.
2. The centertocenter distance will be the same irrespective of the diameter of bars.
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