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How to calculate quantity of cement mortar in brickwork and plastering and steel Quantity in excel download
BRICKWORK QUANTITY
The standard size for a brick is accepted to be 190 × 190 × 90 mm thick; however, when the mortar is included this becomes 200× 200 × 100 mm thick. Therefore a one brick wall will be assumed to be 230 mm thick and a two brick wall 450 mm thick.
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1. Brick Masonry wall
The wall which is formed with bricks is known as as brick wall. The thickness of brick masonry wall used for construction of residential building could be 10cm or 20cm. 10cm wall is known as as Single brick wall or partition wall. Brick masonry wall: 20cm wall is known as as Double brick wall or outer wall of house or boundary wall. The density of Brick = 20 kN/cum
2. Course Rubble Stone masonry:
The wall which is formed with regular size of Granite is known as as course rubble stone masonry.
3. Random Rubble Stone:
The wall which is formed with irregular size of granite is known as as Random Rubble Stone masonry.
4. Retaining wall:
A wall designed to require care of unequal level of ground on its two faces is known as as wall . The wall which is formed all around the plot below ground level to retain the soil and land sliding after the planet work excavation on site is known as as wall . wall are often made up of R.C.C or C.R.S
5.Shear wall
The wall which is formed around the water Sump, lift pit or stair case to retain the soil is known as as Shear wall. it'll share two pressures i.e, water pressure & soil pressure or water pressure & wind pressure.
6.Curtain wall:
The wall which is formed with glass and aluminum or steel frame an extended hall to make individual cabins is known as as Curtain wall.
Calculation of Quantity of RCC
1 m3 of concrete
Dry mix ratio for concrete = 1.56
Dry mix ratio for mortar = 1.25
For 1:2:4 mix, = = 0.222857
Volume of cement required = 1 x = 0.222857 m3
1 bag of cement = 50 kg
30 bags of cement = 1 m3
Volume of cement required = 0.222857 m3 x 30 x 50 = 334.3 kg
Volume of course agg. required = 2 x = 0.445714 m3
Volume of cement required = 4 x = 0.891428 m3
In order to make a retaining wall safe against sliding, the horizontal thrust should be less than Total vertical load x coefficient of friction ( between soil & base slab )
Plastering
plastering of walls, columns and ceiling to urge smooth finish is termed as plastering. Mortar used for plastering could even be lime mortar, cement mortar or lime-cement mortar.
Richer mix getting used for outer walls. to combine the worth effectiveness of lime mortar and good quality of cement mortar many use lime-cement mortar of proportion (cement : lime : sand)
The target of plastering are:
1. to cover defective workmanship
2. to supply smooth surface to avoid catching of dust.
3. to supply good look.
4. to protect the External wall from External factors like rainwater and other atmospheric agencies.
5. to protect surfaces against vermit.
Requirement of fantastic plaster are:
1. It should be easily attached with background
2. It should be hard and durable
3. It should prevent penetration by moisture
4. It should be cheap.
Lime mortar applied in three coats while cement mortar is applied in 2 or 3 coats for the brick masonry. For concrete surfaces cement mortar could even be applied in two or three coats. For concrete building blocks repeatedly only one coat of cement mortar is applied. the last word coat provides smooth surface.
the standard thickness of first coat is 10 to fifteen mm. Middle coat thickness is 6–8 mm. the last word coat is just 2 to 3 mm thick. If single coat is used its thickness is kept between 6 to 12 mm. Such coats are used on concrete surfaces not exposed to rain.
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