Different types of thumb rules for determining the total construction cost of the building
This construction video tutorial is very useful for site engineer. In this video, one can learn how to determine the construction cost of the entire building as well as the required quantities of materials on the basis of thumb rules.
Given below the quantity and rates of materials per square feet :-
* Steel = 3 to 5 kg
* Cement = 0.5 bags
* RMC or ready mix concrete = 0.05 m3
* Block = 12.5 Nos/m2
* Electrical cost = Rs. 133
* Plumbing cost = Rs. 126
* Fire fighting cost = Rs. 40
* External development = Rs. 94.5
* Civil work structure = Rs. 751.25
* Finishing work = Rs. 467.50
Suppose, the length of the plot is given as 20 feet
The breadth of the plot is given as 30 feet
So, the size of the plot = Length x Breadth = 20 x 30 = 600 square feet
The requirement of steel (5 kg/sq.ft) = 5 x 600 = 3000 kg = 3 Tonne
It includes 8 mm, 10 mm, 12 mm and 16 mm dia steel. The rate of 8 mm is Rs. 45/kg, 10 mm is Rs. 44/kg, 12 mm is Rs. 48/kg etc.
So, the quantity of steel = rate x steel kg
The requirement of cement (0.5 bag/sq.ft) = 0.5 x 600 = 300 bags. The cost of 1 bag is Rs. 200 (approx).
The total cost of cement = 300 x 200 = Rs. 600
The requirement of RMC alias ready mix concrete (0.05 m3/sq.ft) = 0.05 x 600 = 30 m3 cement
The cost of electricity (Rs. 133/sq.ft) = 133 x 600 = Rs. 79,800
The cost of plumbing (Rs. 126/sq.ft) = 126 x 600 = Rs. 75,600
The cost of fire alarm (Rs. 40/sq.ft) = 40 x 600 = Rs. 24,000
The construction cost with labor (Rs. 751/sq.ft) = 751 x 600 = Rs. 4,50,600
The cost of finishing work (Rs. 467/sq.ft) = 467 x 600 = Rs. 2,80,200
In finishing work interior part, exterior part and paintings are included.
To gather knowledge on other types of thumb rules, go through the following video tutorial.