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Steel quantity by thumb rule...

<h3><span>How can we get the steel quantity by thumb rule ? I know that it is1% for slab and2-3% for RCC column &amp; beams. If I have10 Cum RCC work for column &amp; beam then how can we get the steel quantity in kgm or Qntl.?</span></h3>

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Question added by Omair Abduljaleel Ali Al-Quliey , Design Engineer , Quliey Office for constructions
Date Posted: 2015/01/07
Muhammad Shakeel
by Muhammad Shakeel , CAD Design Manager , M/S zeeruk Intl.

For slab We are using70kg of steel for1cum.

 

 

For RCC Beam & Column need2-3% steel, say2.5% steel. So, for10 cum RCC =10Ã2.5%=0.25 cum steel. =1962.5kgm. Steel. [I know1 cum steel=7850 kgm] For,1 cum RCC =1962.5/10=196.25 kgm. Steel. So, we are using196.25 kg steel for1 cum.RCC work in column & beam.

Wolf Klaas Kinsbergen
by Wolf Klaas Kinsbergen , Managing Director, Designer , ingenieursbureau KB International NV

Depending on the building type and spans you use per floor28 to45 kg/m2. But that strongly depends on the floor span. Normally I determine the structural design of one floor and the bottom columns and take that up.

Vinod Jetley
by Vinod Jetley , Assistant General Manager , State Bank of India

70 kg per cubic meter

Deleted user
by Deleted user

Frankly I am not hear about this issue before, I just believe that we can estimate precisely the amounts of steel when we get all diagrams that related with the structure which consists all of the details , dimensions and details of the reinforcements

Muhammad Ahsan Anjum
by Muhammad Ahsan Anjum , Senior civil / Site Inspector , National Engineering Services Pakistan (pvt.) Ltd. (NESPAK)

This is only approximation for B.O.Q Actual quantity can be calculated after detail of steel bars only .

Elke Woofter
by Elke Woofter , Project Assistant , American Technical Associates

I think Mr. Muhammed Shakeel has given us the correct answer with70 kg/cbm

lakshmikandh ramadas
by lakshmikandh ramadas , Quantity Surveyor , M/S THUMBAY BUILDERS ( THUMBAY GROUP)

hello sir, good morning to all. i need a clarification for rcc structure,while using the binding wire quantity/ cu.m. pls explain me

Deleted user
by Deleted user

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hatem labib
by hatem labib , Quality control manager , MISER consultant

i supported Mr Shakeel answer

Abed ali Mohammed
by Abed ali Mohammed , Estimation Engineer , RATLS Contracting LLC

I am QS from last nine years and I never got steel density of 70kg/cbm for slabs , it should be between 120 to 140 kg /cbm

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