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Question
What is the proportion in M-20, M-25, M-30 grade of 
concrete?
 Question Submitted By :: Civil-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Propertion in M-20 is 1:1.5:3 and in M-25 is 1:1:2,M-30 is
based upon the disign.
 
Is This Answer Correct ?    32 Yes 5 No
Devi Singh
 
Answer
# 2
M20 (1:1/2:3) M25(1:1:2) there is no proportion for M30 its
a rich design mix concrete only.
 
Is This Answer Correct ?    22 Yes 7 No
Chandu
 
 
 
Answer
# 3
watter, cement, crushed stone meby addmixture 
Is This Answer Correct ?    1 Yes 9 No
M.haseeb Yaquobi
 
Answer
# 4
M-20 means lower grade use in slab casting

(1:1.5:3)
M-25(use in coulam casting - 1:1:1.5)
M-25(use in Raft and foundation use and mix Desgion not
1:1:1 ok
through Indian standard code IS:456
 
Is This Answer Correct ?    1 Yes 10 No
Om Prakash Narayan
 

 
 
 
Other Civil Engineering Interview Questions
 
  Question Asked @ Answers
 
FOR SAME AMOUNT OF RAINFALL & EQUAL CATCHMENT AREA THEN WHERE RUN OFF WILL BE HIGHEST?   4
Is the ratio fixed for M-20,M-25,M-30,M-35....grades of concrete?? L&T 2
how to creat mix m-20? and how to check shuttering & how is mark layout at open ground   1
what is the safe bearing capacity of hard murum? can we consider it 50 ton?m2   1
1) what is the seewage discharge per person per day taken for design purpose as per IS codes? 2) how to convert gauge to MM like if we measure 18G as our door frame then how much is it in MM ? 3) how much binding wire is required ti tie 100kg steel ? 4) while making rings in steel reinforcement , whether the corners of rings are deducted to take out cutting length ? 5) how much carbon content should be there in steel used for construction purpose? 6) what are fe415 & fe 500 and which bars are used in general civil works?   1
What is the cement content for 1m3 of M20,M25 concrete? Omaxe 5
1. why steel used in concrete   6
WHAT HAPPEN WHEN USING OF LARGEST POSSIBLE MAXIMUM SIZE AGGREGATE RATHER THAN SMALLER AGGREGATE IN RCC ?   3
all engineering filed in which branch mother branch L&T 21
1cracks found in brick wall in service building, how to rectify it,with low cost ? how to find propagation of cracks (in depthwise) and arrest on that stage? Is it require to design for Expansion joint in Brick work? if so what is the required distaces?   1
1M2=how much M3?   5
in the footings first which reinforcement bar has to be layed as per desi   1
 
For more Civil Engineering Interview Questions Click Here 
 
 
 
 
 


   
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