How many bags of cement to build a 1, 2, 3, 4 bedroom house

How many bags to build a single room according to square feet, bedroom houses all comes back to the size and number of rooms of the house to be constructed on plan, the design also matters because some houses can be constructed by only timber while some by composite. cement is used right from the foundation, ground slab, wall mortar, beams and columns, plaster, verander, tile fixing, finishing designs and many other related areas. so you require to know: how many bags of cement and amount of sand in according to the standards mortar ratio or concrete ratio. a bedroom house will have different dimensions according to the house design plan which will be built according to cement mix ratio. you can find: how many bags of cement to construct a flat. So lets break it down as below.

How many bags of cement to build a one bedroom house?

64-70 bags of cement for building a 1 bedroom house building consisting of a living room & dining 12*12, one bedroom with a bathroom and a kitchen.

The maximum estimated cost on a brand like kampala and Simba cement at 28000 per bag costs 2 million or Tororo and Hima cement at 33000 per bag making 2.3 million shillings.

How many bags of cement to build a 2 bedroom house?

80-88 bags of cement for building a two bedroom house consisting of a living room & dining 12*12, 2 bedrooms with a bathroom and a kitchen.

The maximum estimated cost on a brand like kampala and Simba cement at 28000 per bag costs 2.5 million or Tororo and Hima cement at 33000 per bag approximately making 3 million shillings.

How many bags of cement to build a 3 bedroom house?

95-100 bags of cement for building a three bedroom house consisting of a living room & dining 12*12, 3 bedrooms with a bathroom and a kitchen.

The maximum estimated cost on a brand like kampala and Simba cement at 28000 per bag costs 2.8 million or Tororo and Hima cement at 33000 per bag approximately making 3.3 million shillings.

How many bags of cement to construct a 4 bedroom house?

112-120 bags of cement for building a four bedroom house consisting of a living room & dining 12*12, 4 bedrooms with a bathroom and a kitchen.

The maximum estimated cost on a brand like kampala and Simba cement at 28000 per bag costs 3.4 million or Tororo and Hima cement at 33000 per bag approximately making 4 million shillings.

Remember: types of tiles & prices, list of roof products & prices. and list of cement products and price in Uganda

How to calculate cement for the slab

Volume of total slab of the whole house

Length * base * height

23ft * 20 * 0.3333

Total volume of slab is 159.984 cft

Dry volume = 230 cft * 1.54 =246.37536 cft

Ratio of aggregate concrete of m15 is 1:2:4

Volume of cement =ratio of cement/total ratio *dry volume =1/7*246.37536 =50.5714 cft

Number of cement bags = 35.19/1.25= 28 bags of cement.

Volume of sand =ratio of sand/total ratio *dry volume =2/7*246.37536 = 70.39296 cft = 2 m3

Volume of aggregate =ratio of aggregate/total ratio *dry volume =4/7*246.37536= 140.78592 cft = 4 m3

How to calculate cement for building bricks and blocks.

Remember our mortar ratio is 25% in the walls.

Mortar ratio is 1:3

Mortar volume

Bedroom 10 cft * 3 bedroom

Living room and dining 11 cft

Bathroom 8 cft

Kitchen 10 cft

From the previous example

The volume of mortar is (30+11+8+10) =59cft

Volume of cement bag is 50kg=1.4cft

Increment due to volume shrink after water=1.27

Cement in cft = ratio of cement*volume of mortar*volume of water/sum ratio=1*59*1.27/4= 18.7325 cft

Bags of cement= cement in cft /volume of cement bag= 18.7325/1.4=14 bags

Sand used mortar cft*sand ratio=18.7325 *3/4=14.049 cft =0.3978233778 m3

How to calculate cement for plastering 3 bedroom house

Internal plaster

Internal plaster thickness=12mm change to foot= 0.0328084 ft

Total surface area for plastering = length * height

Kitchen 8*10=80 in a wall*4 =320

Bedroom 8*10 in a wall *4 =320 *4=1280

Living room 12*10 in a wall * 4= 480

Bathroom 70 *4 walls =280

Total surface area of house=2360

Total surface of doors and windows= (21 sq. ft * 5door entrances) + (12 sq ft. * 4windows)=153 sq ft.

Net surface area for plaster= Total surface area of house - Total surface of doors and windows=2207 sq ft

Volume of plaster= net surface area for plaster* thickness=2207*0.0393=86.7351

Dry volume plaster= volume of plaster 86.7351*water volume 1.54 =133.5720

Recommended Ratio of cement to sand is 1:4 and ratio sum is 5

Cement=1/5*133.5720 cft = 26.7144 cft

Cement bags =26.7144 cft /weight of cement 1.226= 22 bags of cement

Sand =4/5* 133.5720= 106.8576 cft = 3.0258702664 m3

External plaster (30 *24 ). Thickness =15mm (0.0492126 ft)

30 *10 height=300 *2=600

24* 10=240 *2=480

600+480=1080 square footage for a 3 bedroom house

Total surface of doors and windows= (21 sq. ft * 5door entrances) + (12 sq ft. * 4windows)=153 sq ft.

Net surface area for plaster= Total exterior surface area of house 1080 - Total surface of doors and windows 153 =927 sq ft

Volume of plaster= net surface area for plaster* external thickness=927* 0.0492126 =45.6176

Dry volume plaster= volume of plaster 45.6176*water volume 1.54 =70.2512

Recommended Ratio of cement to sand is 1:4 and ratio sum is 5

Cement=1/5*70.2512cft = 14.0502 cft

Cement bags == 14.0502 cft /weight of cement 1.226= 11 bags of cement

Sand =4/5*70.2512= 56.2009 cft = 1.5914322636 m3

How to calculate cement for constructing the foundation.

Total surface area of foundation = length *thickness * height

Living room: 12ft*2ft *0.666667ft =16.000*4=64.000032 cft

Kitchen 8ft*2*0.666667ft =10.666672 *4=42.666688 cft

Bedroom=8ft *2*0.666667ft=10.666672 *4=42.666688 cft*3=128.000064 cft

Bathroom= 7ft*2*0.666667ft=9.33338* 4= 37.33352 cft

Total cubic footage for foundation is 272.000304 cft

The mix ratio of 1:2:3 consists of 1 Part cement, 2 Parts sand, and 3 Parts stone (plus some water)

Volume of mortar= 25%= 25/100*total cubic footage=0.25*272.000304=68.000076

Increment due to volume shrink after water=1.27

Volume of cement=cement ratio 1*volume of mortar * water vol divide by sum ratio 1*68.000076*1.27/6=14.39334942

Bags of cement=14.39334942/volume of cement 1.25=10 bags of cement

Volume of sand=sand ratio 2*volume of mortar * water volume divide by sum ratio 2*68.000076*1.27/6=28.78669884 cft=0.81514853494238 m3

Volume of stones=sand ratio 3*volume of mortar * water volume divide by sum ratio 3*68.000076*1.27/6=43.18004826cft=1.2227228024136 m3

How to calculate cement for the wall beam

17 Iron bar of 8mm thickness and 1 roll of reinforcement wires

Area dimensions of 4 bars is 0.108268 ft2

Area of wall beam =Length * base * height = 142ft * 0.5ft *0.5ft=63.1111cft

Net area wall beam = area of wall beam – Area dimensions of 4 bars= 63.1111cft-0.108268 ft2=63.00283cft

Dry volume = 63.00283cft *1.27(water volume) = 80.01359664cft

Ratio of concrete beam 1:2:3

Cement volume=1/6*80.013 cft=13.33559

Cement bags = Cement volume/weight of cement bag=13.33559cft/1.25=10 bags of cement

Volume of Sand= 2/6*80.013 cft=26.67119 cft convert to m3=0.75524m3

Volume of Aggregate= 3/6*80.013 cft=40.006798cft convert to m3=1.1328663 m3