Answer / upendra

Proportion for M20 grade concrete is 1:1.5:3 , water to be
added is as per water cement ratio 0.54 i.e
0.54 X 50kg of cement wt = 27lit.

Answer / suraj

water required in concrete is 28%of cement and 5% of total aggregate.

Answer / pinku gautam

A water/cement ratio of only 0.38 is required for complete
hydration of cement. (Although this is the theoretical limit, water cement ratio lower than
0.38 will also increase the strength, since all the cement that is added, does not hydrate)
Water added for workability over and above this water/cement ratio of 0.38, evaporates
leaving cavities in the concrete. These cavities are in the form of thin capillaries. They
reduce the strength and durability of concrete. Hence, it is very important to control the
water/cement ratio on site. Every extra lit of water will approx. reduce the strength of
concrete by 2 to 3 N/mm2 and increase the workability by 25 mm

What is the minimum distance between to stirrup ?

2 Answers  

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1 building project (work in progress) and following are sum detail about his project 1) Using local rebar grade 415 2) Total built up area- 60000 sq.ft 3) Floors to be constructed – 21 storey 4) Estimated requirement of Steel per sq. foot – 7KG/sq.ft 5) Concrete grade – M35 6) Rebars mainly required (sizes)- 16,20,25,32 & (8 mm for stirrups) Wanted to ask u if this person uses 500D…what are the benefits he will be getting? Whether his per Sq. foot consumption can b reduce? If yes den around how much?

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1)What is Suggested type of cement for concreting at water, for mass concreting and where the chaces of gettin attucked by salt? 2)How many types of camber? 3)why we always preffer short column in case of residential building? 4) Is there any advantages between the use of One way slab & two way slab? 5)What shoul be the % of steel for R. C. C. perpose based on volume & area ?

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what is the difference between TOR & TMT

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how to test the quality of bars???

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please send latest placement papers of hpcl officers trainee test. i will be very thankful to you.

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1 bundle=how many rods s there? and what is the length of each rod

2 Answers   Sobha Developers,

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