md ehsanul haque


{ City } aligarh
< Country > india
* Profession * project incharge
User No # 39511
Total Questions Posted # 0
Total Answers Posted # 5

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Questions / { md ehsanul haque }
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Answers / { md ehsanul haque }

Question { L&T, 51740 }

who much should be the lap length in reinfocement


Answer

lap length is depend on the grade of concrete.
conc. mix Lap Length
M20 47D
M25 41D
M30 38D
M40 30D
D=dia. of bar
Mix increase then Lap Length decrease

Is This Answer Correct ?    11 Yes 2 No

Question { Interscape, 134202 }

How to convert rainforcement calculation: Running meter to kg


Answer

0.00617 x (D^2) in mm x 1 = Wt. per Rmt
For, 20mm = 0.00617 x 20 x 20 x 1 = 2.467 Kg / Rmt.
length of bar

Is This Answer Correct ?    3 Yes 1 No


Question { L&T, 99128 }

M20 Grade ratio?
M30 Grade ratio?
M40 Grade ratio ?


Answer

M20 Grade ratio = 1:1.5:3, from
M30 & M40 Grade ratio Design Mix

Is This Answer Correct ?    41 Yes 7 No

Question { L&T, 128995 }

How many steel is require in one sqft area?


Answer

2.5 to 3.0 kg per sft

Is This Answer Correct ?    28 Yes 25 No

Question { Focus, 108082 }

how to calculate steel columns beams and slab please give
me brief calculation


Answer

Approx, 1.5 to 2% steel in columns, 1 to 1.5% in beams & 0.7
to 1% in slabs (%age of Conc.)
if concrete is 100 cum in Column.
than we take min 1.5% and max. 2% steel.
It will be 1.5 cum to 2.0 cum steel.
1.5x7850= 11775kg/cm3 (min.)
2.0x7850= 15700kg/cm3 (max.)
(7850 is density of steel per cum)

Is This Answer Correct ?    56 Yes 32 No