Quantity of cement sand and aggregate for 1500 square feet slab and construction cost of RCC slab in India and cost per square feet concrete slab in India
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| Roof slab |
Quantity of cement, sand and aggregate for 1,500 square feet slab or for the roof cast of 1,500 square feet building roof slab, you have require Steel bar, sand, cement and aggregate, how we calculate quantity of cement, sand, Steel bar and aggregate required ,you know that for the casting of roof slab we used M20 mix concrete.
●How to calculate material required for roof cast of 1800 square feet building
●How to calculate material required for roof cast of 1000 square feet building
●How to calculate weight of Steel bar of different size
●How to calculate weight of t -beam, l -beam and Sphare shaped Steel
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#How to calculate weight of rectangular shaped Steel bar
#How to calculate weight of rectangular tube shaped Steel bar
#How to calculate weight of square tube shaped Steel bar
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What is M-20 mix grade of Concrete
Quantity of cement sand and aggregate for 1500 square feet slab.In M20 mix concrete M is stand for mix and numerical figure 20 is stand for characteristic of compressive strength 20N/mm2 after mixing and casting of roof slab.
Quantity of material in slab formation it calculated by M20 mix in which ratio of sand cement and aggregate is 1: 1.5 :3
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●M-mix Ratio :-1 : 1.5 : 3 in which one part is cement 1. 5 part is sand and 3 part is aggregate
Construction cost of RCC slab in India
For construction cost of RCC slab in India we have to find out quantity of steel, cement bags, fine aggregate and coarse aggregate are required for roof casting of 1500 square feet 5 inch slab
How to calculate Steel for RCC slab
● Steel bar calculation:- In roof slab there is a two types of Steel bar used main bar and cross bar:-
1) Main bar:- it is also called as shorts span bar usually used at bottom of slab having spacing 4 inch between the two bar, main bar used in shorter direction having 10 mm dia of Steel bar.
2) Cross bar:- it is also called as longer span bar or distribution bar mainly used at top of the main bar, cross bar usually dia of 8mm Steel bar used in longer direction.
● Given dimensions:-
Thickness of slab=5″
Length of slab =50′
Breadth of slab=30′
Area of slab =50’×30’=1500 sqft
M -20 -mix =1:1.5:3 (concrete)
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| Roof slab |
●Volume Calculation:–
1) wet volume=Area × thickness of slab
Vw= 1500 sqft× 5′
Vw= 1500sqft×5/12′
Vw =625 cft
If you want to convert it into cubic metre you should divide by 35.3147
1m3 =35.3147 cft
Wet volume=625/35.3147=17.698 m3
2) Dry volume:–
We know that wet volume have water and bubbles it can be remove by vibrator or compressor machine so more quantity of material is required hence dry volume is increased by 54 percent of wet volume , so we can multiply 1.54 in wet volume to calculate dry volume
Vd =1.54 ×17.698 m3
Dry volume=27.255 m3
●Weight calculation of Steel:- quantity of steel required in roof slab is about 0.5℅ to 1% of dry volume then average is 0.75% of dry volume
Weight =0.75%of dry volume×density of steel
Density of steel is=7850 kg/m3
W =0.75/100×27.255m3 ×7850kg/m3
Weight=1602.8 kg
So weight of Steel bar is require for 1500 square feet Roof slab= 1602.8kg
If Market rate of steel bar is 60 rupees per kg then
total cost of Steel bar =1602.8×rs 60
Total cost= Rs 96172
How much quantity of sand required for Roof cast of rcc slab
In M20 ratio of sand cement and aggregate is 1:1.5:3 ,in this ratio 1.5 part is sand
Total proportion =1+1.5+3=5.5
Volume of sand in cft
Volume =1.5 /5.5×27.225×35.3147 cft
Volume of sand =262.21 cft
If market rate of 80 rupees per CFT then total cost of quantity of sand
Total cost =rs80×262.21
=Rs 20976
How much cement is required for roof cast of 1500 square feet RCC slab
●Cement calculation:- in M20 mix 1 part is cement quantity
Weight of cement=1/5.5×dry volume in m3×density of cement
Density of cement=1450kg/m3
Weight =1/5.5×27.255 m3×1450 kg/m3
=7177.5 Kg
1 bag cement =50kg
No.of bags =7177.5/50
=143.55 Bags cement
If market rate of cement is 350 rupees per bags then total cost
Total cost =143.55 ×rs 350
= Rs 50242
How much course aggregate is required for 1500 RCC roof slab
●Aggregate Calculation:-
in M20 mix there is 3 part of aggregate quantity
Volume of aggregate=3/5.5×dry volume in CFT
Volume =3/5.5×27.255×35.3147 cft
Volume =524cft
If market rate of aggregate is is 70 rupees per CFT then total cost of aggregate
Total cost =rs 70×524
Rs=rs 36709
Total cost of material required for 1500 square feet RCC slab
Cost of steel=rs 96172
Cost of cement=rs 50242
Cost of sand=rs 20976
Cost of stone=rs 36709
Labour charge and machine cost =rs 75000 (approx)
Total cost=Rs 279099
Hence total cost of roof slab of 1500 square feet building require rs 279099
1602.8 Kg steel, 262.21 Cubic feet sand, 143.55 bags ( 7177.5 kg) cement and 524 Cubic feet aggregate are required for roof cast of 1,500 square feet rcc slab and total cost of material is about Rs 279099.
How much does a 1500 square foot concrete slab cost?
A 1,500-square foot concrete slab may cost between $6,000 to $12,000. The average price for a concrete slab is range between $4 to $8 per square foot. So, 1,500 sq ft concrete slab may cost $6,000 to $12,000 because 1,500 ×4 = $6,000 or 1,500 ×8 = $12,000.
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Volume of sand’s calculation put the digit is wrong.plz correct the digit its 27.255 m3 but put has 27.225