if i want to change the dia of some bar in a structure,then which formula should

if i want to change the dia of some bar in a structure,then which formula should be used to find the spacing for the bar of new dia?

Question Posted / subh

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if i want to change the dia of some bar in a structure,then which formula should be used to find the..

Answer / karan

Suppose, we are using 10 dia reinforcement with 120 c/c spacing in slab.Due to unavailability of 10 dia., we opt 12 dia. reinforcement then:

Area of 10mm dia/spacing = Area of 12 dia/spacing
3.14*10*10/120 = 3.14*12*12/x
therefore, x=172.8,
say, 175mm
hence, provide 12 mm dia r/f in slab @ 175C/C

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if i want to change the dia of some bar in a structure,then which formula should be used to find the..

Answer / javed

D1 X 2 / Spacing = D2 x 2 / Spacing

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if i want to change the dia of some bar in a structure,then which formula should be used to find the..

Answer / nisar ahmad

D1/L1=D2/L2
Whered1 is actual dia
L1 is actual length
D2 is available steel

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