Considering 1:4 ratios for cement mortar in 150mm thick brickwork.
Calculation of quantity for 5 cu.m volume in brickwork as follows:
Size of brick = 19 cm x9 cm x9 cm.
Vol. of brick = (0.19 x 0.09 x 0.09) cu.m
= 0.00154cu.m.
Vol. of brick with cement mortar
= (0.2 x 0.1 x 0.1) cu.m
= 0.002 cu.m.
No. of bricks in 5 cu.m
= 5 ¸ (vol. of one brick with mortar).
= 5 ¸ 0.002
= 2500
Vol. of 2500 bricks = 2500 x vol. of one brick without mortar.
=2500 x 0.00154
= 3.85cu.m.
Vol. of mortar = 5 – 3.85 = 1.15 cu.m.
Add 15% (Bulkage + wastage)
\ Vol. of wet mortar = 1.15 + {1.15 x (15 ¸ 100)}
= 1.323cu.m
Vol. of dry mortar = 1.323 + 33% in wet mortars for interlocking =1.759cu.m
Vol. of cement = 1.759 ¸ (1+4) =0.352cu.m
\ No. of cement bags = 0.352 ¸ 0.035
=10.057bags.
» 10.00bags
Vol. of sand = 0.352 x 4
= 1.408cu.m.
ITEM DESCRIPTION
|
QUANTITY
|
RATE RS.
|
AMOUNT RS.
|
a. Material
Cement
Sand
Bricks
|
10 bags
1.408 cu.m
2500 Nos.
|
250/bag
1270/cu.m
4/no.
|
2500.00
1788.16
10000.00
|
Mason
Head Mason
Male coolie
|
4
1
10
|
250/day
400/day
200/day
|
1000.00
400.00
2000.00
|
Total
|
17688.16
| ||
c. Tools & Plants
|
1%
|
0f total
|
176.88
|
Total
|
17865.04
| ||
d. Water charges
|
2%
|
Of total
|
357.30
|
Total
|
18222.34
| ||
e. Supervisor, Overhead & Profit
|
25%
|
Of the total
|
4555.58
|
Total
|
22777.92
|
RATE FOR 5 CU.M = 22777.92 Rs.
RATE FOR PER CU.M = 4555.58 Rs.
