Quantity calculation of concrete for DPC and what is DPC and how much cement sand and aggregate required for 50 square metre DPC work.

◆ what is DPC:- generally DPC damp proof course or damp proofing course is barrier between superstructure of building and ground structure of building which prevent moisture from ground soil due to capillary action that is called rising pump. and DPC put on wall and on floor to prevent from moisture and it is used at basement which restrict the movement of moisture from ground soil to Brick wall and floor surface.

Quantity calculation of concrete for DPC

* introduction:- in this topic we calculate quantity of cement sand and aggregate required for 50 square metre DPC work.

For the calculation of dry volume 33% volume is increased so we should multiply cofactor 1.33 in wet volume.

Dry volume =1.33×2 m3 =2.66 m3

*mix ratio:- we have use mix ratio of cement sand and aggregate is 1:2:4 in which 1 part cement 2 part sand and 4 part aggregate. And total proportion=1+2+4=7

(1) quantity calculation of cement in number of bags;-

Density of cement=1440 kg/m3
Weight of 1 bag cement=50 kg

Weight=volume×density

Number of bag of cement=(1×2.66×1440)/(7×50) =10.944 bags

Number of bag of cement = 11 bags (approx)

(2) quantity of sand:-

1m3 =35.3147cft

Volume of sand =2×2.66×35.3147/7 cft
Volume of sand =26.839 cft

(3) quantity of aggregate:-

Volume of aggregate=4×2.66×35.3147/7
Volume of aggregate=53.678 cft

●Results:- for DPC work of 50 square feet area we have required following material:-

1) number of bag of cement =11 bags
2) volume of sand in CFT=26.839 cft
3) volume of aggregate=53.678 cft

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