## CALCULATION OF MATERIALS REQUIRED FOR BRICK WORK WITH STANDARD BRICKS FOR 10 CUM OF WORK.

###
__BRICK__**:**

__BRICK__

Considering a wall 1½ brick thick, 30 cm nominal thickness of
length 15 m and height of 5 m.

Ø
Total
Nominal Volume = 15m × 0.3m (30 cm) × 5m = 22.5 cum.

Normally for brickwork, mortar joint
will be less than 1 cm (1 m), taking 1 cm mortar joint, the thickness of the
wall will be 29 cm.

Ø
Hence,
the Actual Volume = 15m × 0.29m (29 cm) × 5m = 21.75 cum.

The Nominal size of a Standard Brick
= 20 cm × 10 cm × 10 cm

Ø
Then,
the Volume of a Standard Brick of Nominal Size= 0.20m
× 0.10m × 0.10m = 0.002 cum.

Ø
Therefore,
the Number of Standard Bricks for Actual Volume (21.75 cu m.) –

Ø Hence, Number of Brick required per cu m.
(Nominal) –

Ø Considering 5% breakages, wastage, etc.,
then Number of Brick required per cu m. = 507 nos, this may be taken as 500
nos. per cum.

v For 10 cum. Of Brickwork (500x10) 5000
nos Brick are required.

###
__MORTAR__**:**

__MORTAR__

Ø
Mortar
requirement for Brickwork –

= (Total Actual Volume of Brickwork – Net
Volume of Bricks)

= 21.75 – (10875×0.19×0.09×0.09)

= 21.75 – 16.737

= 5.013 cum.

Ø 15% extra Mortar considering for frog
filling, for use of cut bricks, for bonding, for uniform joints, wastage etc.,
hence, the Total Volume the Mortar –

= Mortar requirement for Brickwork + (Mortar
requirement for Brickwork × 15%)

= 5.013 + (5.013×15%)

= 5.765 cum.

Ø For dry volume increased by ¼ dry volume of
Mortar –

= Total Volume the Mortar + (Total Volume the
Mortar × ¼)

= 5.765 × (5.765 × ¼)

= 7.206 cum.

For 22.5 cum. of Brickwork, dry volume of
mortar = 7.206 cum.

v For 10 cum of brickwork, Dry Volume of mortar
= 7.206 × (10/22.5) = 3.203 cum.

Ø
In
practice, for cement mortar 3 cum. dry mortar and lime mortar 3.5 cum of dry
mortar are taken for 10 cum. brickwork, an approximate 30% of total brickwork
quantity may be taken for dry mortar.

###
**Calculation
of Material of Mortar – **

To calculate the Material for Mortarconsidering
proportion of material = 1:6

Ø For 10 cum. of brick work dry volume of mortar = 3 cum.

Ø
Cement: Sand
= 1:6

Ø
Cement + Sand
= 1 + 6 = 7

Ø
For Cement –

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