how much quantity of blocks, cement and sand is required to
complete 1sq.m of CC Hollow blockwork. Size-16"x8"x8". Also
what is the cement sand ration commonly used?
Answer Posted / k.amirthalingam
Quantity of material used for a Hollow block work
(400X200X200)?
1. Qty of HOllow block is 10 to 12 numbers / Sqm
2. Cement sand ratio preferable is 1:4
3. For 1:4 CM the cement, sand calculation as follows
Volume of mortor = Horizontal joints 5 rows of 200 mm wide
20 mm thick = 5*.2*.02 = .02 cum
Volume of verticaljoints : 5*2.5*.2*.2*.02 = .01 cum
Total = .03 + 30 % wastage = 0.039 Cum of Cement Mortor
For 1:4 ratio
Weight of cement in 1 Sqm = .039*1*(1/5)*1440 = 11.232
Kg /Sqm
Volume of Sand = .039*1*(4/5) = .0312 Cum = 1.11 Cubic foot
NOTE: But in actual it occurs more than the above
calculated values because many unskilled people filling the
hollow portions of the block. This is the wrong practice.
The Laying system is such that the hollow portion to be
overlapped with filled portion hence the hollow portion to
be maintained. This will give good heat reduction inside
the building.
For more queris mail me at ameerabic@gmail.com
K.Amirthalingam from Ariyalur
Is This Answer Correct ? | 134 Yes | 47 No |
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