2000 sq ft Slab Material and Cost Estimate
Introduction:
Slab is a very important part of any building, hence it is very important to determine it and estimate its cost beforehand.
This helps us in determining the details and cost of all the materials used in the building and the strength and size of the structure.
It is very important to have accurate information about the budget of slab so that we can control the cost of our project according to our budget and financial status.
Basic Details of the Slab:
In the basic details of the slab, we get information about the following things.
1-Thickness of the slab : 6 Inch
2-Length of the slab : 65’8″
3-Width of the slab : 30’0″
Total area of the slab : 2000 sq ft .
Grade of concrete : M20
Understanding M20 Concrete Mix (1:1.5:3) :
M20 grade concrete is a commonly used mix, prepared in the ratio of 1:1.5:3 (cement : sand : aggregate).
In which
In which 1 part cement
1. 5 part sand
3 part aggregate
Slab Volume Calculation (2000 sq ft, 6-inch thickness):
To find the volume of concrete, we multiply the length, width, and height of the slab and get the volume of concrete.
Length: 66’8″
Width: 30’0″
Height / Thickness: 6″
Volume = 66’8″x 30’0″x 6″ =1000 cubic feet
Volume (cubic meter) = 1000 × 0.0283168 = 28.3168 m³
Dry volume = wet volume × 1.54 = 28.3168 × 1.54 = 43.6079 m³
Volume as per M20 (1:1.5:3)= 43.6079 m³
Total parts = 1 + 1.5 + 3 = 5.5 parts
Cement Requirement for 2000 sq ft Slab:
Cement volume = 43.6079 × (1/5.5) = 7.9287 m³
Since 1440 kg of cement is required in 1 cubic meter, hence the quantity of cement is 7.9287 x 1440 = 11,417.328 kg.
50 kg of cement is required per bag
Hence the quantity of cement in a bag: 11,417.328/50 = 228.346 bags
Say About 230 bags of cement will be required for casting 2000 slabs.
Sand Requirement for 2000 sq ft Slab :
Sand volume = 43.6079 × (1.5/5.5) = 11.8931 m³
Volume of sand in cubic feet 420 cubic feet
Aggregate Requirement for 2000 sq ft Slab :
Aggregate volume = 43.6079 × (3/5.5) = 23.7861 m³
Volume of aggregate in cubic feet : 839.99
say 840 cubic feet aggregate required for slab casting of 2000 square feet area
Steel Bars (Reinforcement) Requirement for 2000 sq ft Slab :
10mm bars will be used in the slab which will be placed at a distance of 5 inches
Total length of bars 2,926.82 meters
Weight of bars = 2,926.82x 0.617= 1,805.84 kg to 1810 kg
5% will be added for overlap, i.e. about 90 kg
Thus, the total quantity of bars required for casting a 2000 sq. ft. slab will be 1900 kg i.e. 19 quintals
Binding Wire Requirement for 2000 sq ft Slab :
The binding wire used to tie the rods generally requires 1 kg of binding wire to extend 1 quintal of bars.
So, to extend 19 quintal of bars, 19 to 20 kg of binding wire will be required.
2000 sq ft Slab Material and Cost Estimate :
Cement Cost Estimate :
The rate of cement per bag is taken as Rs 500 in this estimate. Hence the total cost of cement is 230 x 500 = Rs 115,000.
Cement Cost: 115,000 Rs.
Sand Cost Estimate:
The rate of sand keeps changing due to change of place, transportation etc., hence we will consider the maximum rate of sand prevailing in the market, which is Rs. 93 per cubic foot.
Hence, the total cost of sand: 420 x 93 = Rs. 39,060.
Sand Cost : 39060 Rs.
Aggregate Cost Estimate:
The rate of aggregate also depends on the plant and transportation etc.
We consider the maximum rate of aggregate to be Rs 85 per cubic foot.
So cost of aggregate: 840 x 85 = Rs 71,400.
Aggregate Cost : 71,400 Rs.
Steel Reinforcement (TMT Bars) Cost Estimate :
The steel bars are of standard Tata type which are priced at Rs 81 per kg.
So, cost of Reinforcement Steel Bars is
1900 x 81 = Rs 153,900.
Binding Wire cost is Rs 130 per kg.
20 x 130 = Rs 2600.
Steel Reinforcement (TMT Bars) Cost : 156,500 Rs.
2000 sq ft Slab Material and Cost Estimate
1. Cement Cost
Qty = 230 bags
Rate = Rs 500 / bag
Total = Rs 115,000
2. Sand Cost
Qty = 420 cu.ft
Rate = Rs 93 / cu.ft
Total = Rs 39,060
3. Aggregate Cost
Qty = 840 cu.ft
Rate = Rs 85 / cu.ft
Total = Rs 71,400
4. Steel Reinforcement (TMT Bars) Cost
Qty = 1900 kg
Rate = Rs 81 / kg
Total = Rs 153,900
5. Binding Wire Cost
Qty = 20 kg
Rate = Rs 130 / kg
Total = Rs 2,600
2000 sq ft Slab Material and Cost Estimate | Cement, Sand & Aggregate
Cement + Sand + Aggregate + Steel + Binding Wire
= 115,000 + 39,060 + 71,400 + 153,900 + 2,600
Total = Rs 381,960 Rs.
Beam Requirement for 2000 sq ft Slab:
For this slab, the beam is given of 9 inches.
The surface area of the beam is 295.69 sq ft which is 14.78 percent of the slab or it can be considered as 15 percent i.e. the area of the beam is 15 percent of the area of the ceiling
Beam Volume Calculation :
To find the volume of the beam, multiply the surface area of the beam by the depth of the beam. The total volume of the beam in cubic feet is 295.69 X . 75 = 221.76 cubic feet. 6.279 cubic meters. Multiplying by the dry volume factor 1.54 gives 9.669 cubic meters.
Hence, the total volume of the beam in cubic meters is 9.669 cubic meters.
Cement Requirement for Beam :
Cement Volume = (1 / 5.5) × 9.669 = 1.757 m³
Cement in Bags
Cement density = 1440 kg/m³
Cement weight = 1.757 × 1440 = 2,531 kg
Bags = 2531 ÷ 50 = 50.6 bags Say 51 bags
Sand Requirement for Beam :
Sand Volume = (1.5 / 5.5) × 9.669 = 2.635 m³
Aggregate Requirement for Beam :
Aggregate Volume = (3 / 5.5) × 9.669 = 5.277 m³
Steel Bars (Reinforcement) Requirement for Beam :
If 6 reinforcement bars of 16 mm are inserted in the beam, then the total length required will be 760 m.
So the amount of reinforcement steel is 760 x 1.58 = 1,200.8 kg.
Or we can also call it 1200 kg.
Binding Wire Requirement for Beam :
12 quintals of beam will require 12 kg of binding wire to extend the reinforcement steel
Beam Cost Estimation (Volume = 9.669 m³)
Cement
51 bags × ₹500 = ₹25,500
Sand
93.05 cu.ft × ₹93 = ₹8,654
Aggregate
186.36 cu.ft × ₹85 = ₹15,840
Steel (TMT Bars)
1,200 kg × ₹81 = ₹97,200
Binding Wire
12 kg × ₹130 = ₹1,560
Grand Total (Beam Material Cost):
₹25,500 + ₹8,654 + ₹15,840 + ₹97,200 + ₹1,560 = ₹148,754
Stirrups Requirement for Beam
Spacing of Stirrups: Stirrups will be placed at 6-inch (150 mm) distance along the length of the beam.
Total Number of Stirrups: Approximately 760 stirrups will be required.
Diameter of Stirrups: 8 mm steel bar will be used for making stirrups.
Size of Each Stirrup: 7 inch × 12 inch (inside clear dimension).
Length of One Stirrup: 1.092 meters
Total Length of Steel Required:
760×1.092=829.say 830 meters
Weight of Stirrups
Unit Weight of 8 mm bar = 0.395 kg/m (IS code standard)
Total Weight = 830 × 0.395 = 327.85 kg ≈ 328 kg
Binding Wire for Stirrups
Approx. 4 kg binding wire will be required for tying the stirrups.
Cost Calculation:
Steel Cost: 328 kg × ₹81 = ₹26,568
Binding Wire Cost: 4 kg × ₹130 = ₹520
Total Cost for Stirrups: ₹27,088
Shuttering Cost Calculation
Shuttering Area: 2,900 sq.ft
Rate: ₹40 / sq.ft
- Shuttering Cost = ₹116,000
Final Total Cost Summary
Component
Slab
Beam
Stirrups
Shuttering
Grand Total
Total Cost
381,960
148,754
27,088
116,000