Civil Engineering - Estimating and Costing - Discussion
Discussion Forum : Estimating and Costing - Section 1 (Q.No. 22)
22.
For 12 mm thick cement plastering 1 : 6 on 100 sq.m new brick work, the quantity of cement required, is
Discussion:
43 comments Page 2 of 5.
ABHIJIT MANDAL said:
10 years ago
Volume of plaster = 0.012*100 = 1.2 m^3.
Add 20% depression & wastages volume of plaster = 1.2+1.2*20% = 1.2+0.24 = 1.44.
Add 1/3 dry volume = 1.44+1.44*1/3 = 1.44+0.48 = 1.92 m^3.
Cement = 1.92*1/7 = 0.274 m^3.
Add 20% depression & wastages volume of plaster = 1.2+1.2*20% = 1.2+0.24 = 1.44.
Add 1/3 dry volume = 1.44+1.44*1/3 = 1.44+0.48 = 1.92 m^3.
Cement = 1.92*1/7 = 0.274 m^3.
Ramvir singh said:
7 years ago
@All
We will take 60% extra of total Volume for water and joint filling between the bricks. So, 1 for 15mm thick plasters the answer is 0.3428 m3 and For 12 mm thick plaster it is 0.2742 m3.
We will take 60% extra of total Volume for water and joint filling between the bricks. So, 1 for 15mm thick plasters the answer is 0.3428 m3 and For 12 mm thick plaster it is 0.2742 m3.
Naveen Srivastava said:
7 years ago
0.278 is the incorrect answer.
There is no need to add an extra 25%.
It's Converted to wet volume to dry volume by 1.30.
The Correct ans is 100 * 0.012 * 1.30 = 1.56 * (1/7) = 0.222cum.
There is no need to add an extra 25%.
It's Converted to wet volume to dry volume by 1.30.
The Correct ans is 100 * 0.012 * 1.30 = 1.56 * (1/7) = 0.222cum.
Brijesh vishwakarma said:
9 years ago
Volume of plaster = 0.012 * 100 = 1.2 m^3.
Add 60% for new wall depression & wastages volume of plaster = 1.2 + 1.2 * 60% = 1.92 cum.
Cement = 1.92 * 1/7 = 0.274 m^3.
Add 60% for new wall depression & wastages volume of plaster = 1.2 + 1.2 * 60% = 1.92 cum.
Cement = 1.92 * 1/7 = 0.274 m^3.
Mohit Motwani said:
8 years ago
Volume of mortar required= 100*.12 = 1.2.
Total 60% of volume increases for dry mortar
1.2+ (.60* 1.2)= 1.92.
Now volume of cement = 1/7 * 1.92= 0.2743.
Total 60% of volume increases for dry mortar
1.2+ (.60* 1.2)= 1.92.
Now volume of cement = 1/7 * 1.92= 0.2743.
Narendra saud said:
3 years ago
You can take 30% for uniform wall and 25% for dry volume i.e. total of 55%.
Now, 10x10x0.012 = 1.2
Hence (1.2/1+6)+(1.2/1+6)x55/100 = 0.2785.
Now, 10x10x0.012 = 1.2
Hence (1.2/1+6)+(1.2/1+6)x55/100 = 0.2785.
(6)
Ajay saini said:
1 decade ago
You can take 30% for uniform wall and 25% for dry volume i.e. total 55% Now 10x10x0.012 = 1.2 hence (1.2/1+6)+(1.2/1+6)x55/100 = 0.2785.
Muthu nayak said:
7 years ago
dry vol=area*thckness*1.3*1.25.
dry vol=100*0.012*1.3*1.25.
=1.95cum,
Cement=1.95/1+6,
Cement=0.278cum,
dry vol=100*0.012*1.3*1.25.
=1.95cum,
Cement=1.95/1+6,
Cement=0.278cum,
Adebola said:
9 years ago
I think answers may vary because one may decide to allow 10-20% for wastage& 30%-35% for shrinkage.
Tarkraj said:
3 years ago
No, it's wrong.
In mortar or plastering, we increase only by 30%.
But for PCC we increase 50-55%.
In mortar or plastering, we increase only by 30%.
But for PCC we increase 50-55%.
(3)
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