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Question
how to calculate quantities of sand , cement & aggregate in 
1m3 - M20 , 1m2 of 6mm/12mm/20mm plaster , 1m3 20cm/ 1m2 of 
10cm brick wall, paint quantity for 1m2 snowcem and lime 
painting?
 Question Submitted By :: Civil-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
1. Grade of concrete M20 so ratio is 1:11/2:3
let volume of concrete - 1cum
total ratio- 1+1.5+3 = 5.5
cement = 1x1.54/5.5 = 0.28 cum so cement is =0.28x
1440Kg/cum = 403.2 Kg = 8.064 bags
sand-0.28*1.5= 0.42cum
aggregate- 2.8*3= 0.84 cum

2. plaster = suppose 12mm palster
consider 1 sqm ratio is 1:6
volume of concrete= .012x1= .012cum ( per 1sqm)
incrase 20% for joint, filling and wastage=.012*20%=.0144

calculate 1/3rd of mortar when
dry= .0144*1/3+.0144= .0192cum

summation of ratio = 7
cement= .0192/7=.00274cum
= .0789bags
sand= .00274*6=.0164cum

this formula applied for 6mm and 20mm also.
plaster area= paint area
 
Is This Answer Correct ?    54 Yes 15 No
V.purushotham
 
Answer
# 2
1. Grade of concrete M20 so ratio is 1:11/2:3
let volume of concrete - 1cum
total ratio- 1+1.5+3 = 5.5
cement = 1x15.4/5.5 = 2.8 cum so cement is =2.8/.347=8 bags
sand-2.8*1.5= 4.2cum
aggregate- 2.8*3= 8.4 cum

2. plaster = suppose 12mm palster
consider 1 sqm ratio is 1:6
volume of concrete= .012x1= .012cum ( per 1sqm)
incrase 20% for joint, filling and wastage=.012*20%=.0144

calculate 1/3rd of mortar when
dry= .0144*1/3+.0144= .0192cum

summation of ratio=7 so cement= .0192/7=.00274cum
= .0789bags
sand= .00274*6=.0164cum

this formula applied for 6mm and 20mm also.
plaster area= paint area
 
Is This Answer Correct ?    40 Yes 35 No
Sjtbehera
 
 
 

 
 
 
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