what will be the grade for M 30 ,35,40,45,50,55???

2 Answers  

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why spacer in reinforcement? 

3 Answers   ECCI,

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what is the mode of method of face bar measurement

0 Answers  

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What is the amount of cement,sand and course aggregate(jully)(in kgs) required for the RCC of an area of 450 square feet and 5 inch depth if the concrete mixing ratio is 1:2:4(cement:sand:jully)?your answer will be very helpful.

1 Answers  

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Explain the difference between shear and tensile strength.

0 Answers  

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pls tell me , what is the water content

0 Answers  

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what is bond strength of concrete

1 Answers  

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why 50% more is assumed while calculating dry volume of coarse and fine aggregates in concrete calculations.whether 50% more is correct? How is it decided? whether the same is applicable to cement volume. Also what about cement mortar dr volume? How much more is to be considered for dry volume of mortar.

1 Answers  

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In IS:456-2000 the workability of concrete is given in mm (slump)in cl.7.1. In IS:10262-1982, cl.3.3.4 & table-6 says +/- 3 percent adjustment is required in the quantity of water (calculated as per table-4 or 5), for each increase or decrease in the value of compacting factor (i.e. workability of concrete) by 0.1. How it is possible to calculate the exact quantity of water required for a particular grade of concrete? What is the relation between Slump & Compacting factor of concrete?

1 Answers   Unitech,

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what is right & short method of measurement of slab&beam

0 Answers   L&T,

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What are the causes of building collapse?

0 Answers  

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If a slab concrete is placed with M-20 grade concrete, actually it has to be placed with M-30. what are the rectifications / measures to be taken after concreting is done.

0 Answers   BARC,

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