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Job Mix Concrete Volume

A trial batch of concrete can be tested to determine how much concrete is to be delivered by the job mix. To determine the volume obtained for the job, add the absolute volume V a of the four components—cements, gravel, sand, and water.

Find the V a for each component from

V a = W L / ( SG ) W u

where V a = absolute volume, ft 3 (m 3 )

W L = weight of material, lb (kg)

S G = specific gravity of the material

W u = density of water at atmospheric conditions (62.4 lb/ft 3 1000 kg /m 3 )

Then, job yield equals the sum of V a for cement, gravel, sand, and water.

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Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

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25 comments on "Job Mix Concrete Volume"

mvakil says:

Can you give the details
1 – volume of one bag of Cement (50 Kgs)
2 – weight of one cubic meter aggregate
3 – weight of one cubic meter sand

Froilan says:

Makvil,

I think 1 is the cement for one bag. 2 is the sand for 2 cubic feet. 3 is the gravel for 3 cubic feet. it refers to volume not weight.

Thanks.

Froilan says:

Does anytime assist me in providing a sample of Steel I Beam Investigation calculation. A sample would be nice..

Bmott says:

if i want a s.g of 1.52 of type i/ii cement what is the formula to figure water to cement ratios if i only have the specific gravity

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