Friday, April 19, 2019

How to plan material requirement by yourself to estimate the budget in more detail




Estimating the budget is much needed before the construction of home and after the structural designing of building. Estimating the budget in case of construction is always difficult for the land owners, but we had made it is easier by covering the important aspect in the previous article. But there is another important deciding factor for the cost of construction is your material requirement for the construction of your house. For that you need to know what will be your material requirement for the construction of your house i.e Planning material requirement.



Planning material requirement:-
For the planning of material we are dividing material requirement for each job.

1)Slab casting
2)Brickwork
3)Plaster work

1)Slab casting(slab size 900 square feet, thickness 4”)

                                                   Material requirement for concrete

                                                                   Table A
Concrete mix
Water & cement ratio
Water in litre per bag of cement
Cement(Bags)
Sand           (cubic metre)
Stone aggregates (cubic metre)
1:1:2
0.35
             17.5
11.2
0.4
0.8
1:1.5:3
0.42
21
8
0.42
0.83
1:2:4
0.55
27.5
6.2
0.43
0.87
1:3:6
0.75
              37
4.4
0.45
0.9
1:4:8
0.95
47.5
3.3
0.46
0.93


Slab work:-
For concrete ratio 1:1:5:3

Concrete quantity= 900x4/12 cubic feet = 300 cubic feet = 300/35.5 cubic metres = 8.5 cubic metres
Please refer to Table A and calculate the required quantity of all the ingredients:
Cement = 8.5x8 = 68 bags
Sand = 8.5x0.42 = 3.57 cubic metres
Gitti = 8.5x0.83 = 7.01 cubic metres

2)Brickwork(300 square feet, wall thickness is 8")

                          Material requirement for 1 cubic metre of Brickwork      

                                            Table B
Mortar
Cement (Bags)
      Sand (Cubic metre)
1:3
2:6
0.267
1:4
1:9
0.275
1:6
1:4
0.299
1:8
1:1
0.308

Note:Approximately 0.25 cubic meters of mortar & 500 bricks are required for 1 cubic meter of brickwork.

If we are choosing the mortar ratio 1:6 then material requirement for brick work will be


Brick work quantity = 300x8/12 cubic feet = 200 cubic feet = 200/35.5 cubic metres
= 5.67 cubic metres
Fir this, refer to Table B to calculate the quantities:
Cement = 5.67x1.4 = 8 bags
Sand = 5.67x0.299 = 1.7 cubic metres
Bricks = 5.67x500 = 2835 numbers


3)Plaster work(200 square feet, 1/2 inch thickness)

           Material requirement for 100 square metre of plaster of 12 mm (1/2 inch) thickness               
                                          Table C
Mortar
Cement (Bags)
Sand (cubic metre)
1:2
21
1:4
1:3
15
1:5
1:4
12
1:6
1:6
9
1:8


If we are choosing the mortar ratio 1:4, then material requirement will be:-

0.5 inch thick plaster area = 200 square feet = 200/10.76 square metres = 18.6 square metres Referring to Table C,
Cement = 18.6x12/100= 0.3cubic metres
Sand = 18.6/1.6x100 = 0.3 cubic metres
Remember to add 5 to 8% for wastage always.
 
Here we have provided you a detail insight with which you can calculate your material requirement for home construction.So readers comment bellow  by what additional method you calculate your material requirement.


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