How To Calculate Cement And Sand For Plastering?

How To Calculate Cement And Sand For Plastering
Calculation of quantity of material for 12 mm thick plaster of ratio 1: 6 (1 Cement:6 Sand) in the wall for 100 Sqm

  1. Quantity of Cement = 2/(1+6) × 1 (1 Ratio of cement)
  2. In Kg = 0.30 × 1440 (Density of cement = 1440 kg/m3)
  3. Quantity of Sand = 2/(1+6) × 6 (6 Ratio of sand)
  4. In Cubic Feet = 63.558 cft (1 Cum = 35.31 cft)

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How to calculate cement and sand for 100 m2 plastering area?

How To Calculate Cement, Sand Quantity For Plastering? – Following points should be remembered while calculating the quantity of cement, sand for plastering work.1. For wall plastering, Cement : Sand = 1 : 6 2. For ceiling plastering, Cement : Sand = 1 : 4 3.

Thickness of plaster should be in between 12-15 mm. If an additional coat is required then do not do it at one go.4. Use good quality of cement & Sand.5. Use measuring box (not head pan) for site mix. We will calculate cement and sand for 100 m 2 plastering area in 1:6 ratio and thickness of 12 mm. Cement Mortar Required: Plastering thickness = 12 mm = 12/1000 = 0.012m Volume of cement mortar required = ( Plastering Area x thickness ) = 100 m 2 x 0.012m = 1.2 m 3 (This is wet volume of cement mortar (after mixing water) but we need dry volume.

To get dry volume consider 35% bulking of sand and 20% wastages = 1.2 m 3 x (1+0.2+0.35) (Rather than 35% sand bulkage and 20% wastage you can add 1.54 as constant) = 1.86 m 3 Cement : Sand = 1 : 6 Sum of ratio =( 1 + 6) = 7 ∴ Cement required = 1.86 x 1/7 = 0.265 m 3 = 0.265/ 0.0347 ( 0.0347 m3 = 1 bag = 50 kg cement) = 7.66 bags ( ≈ 8 Bags) ∴ Sand required = 1.86 x 6/7 = 1.59 m 3 Here we have calculated in Sq.m but you can also calculate it in Sq.ft.

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How to calculate plastering work?

Calculating the quantities of Cement & Sand required for plastering Work: – How To Calculate Cement And Sand For Plastering How to Calculate Quantity of Cement Sand and Water in Plastering General points to be remembered in Plastering work calculation Plastering Estimate

  • The ratios mentioned in plastering are volumetric ratios of Cement & Sand (Ex. Cement:Sand = 1:5, 1 part of cement and 5 parts of sand in a mortar).
  • The overall thickness of plastering should be minimum 20mm including two coats.
  • Cement has a dry density volume of 1440Kg/m 3
  • Each bag of cement weighs = 50 Kgs or 110 lbs
  • The Volume of each cement bag = 50Kgs/1440 = 0.0348 m 3,
  • The dry density of sand = 1600Kgs/m 3
  • The plastering is done in two layers (two coats): The first coat of plastering is laid with the thickness of minimum 12mm (usually ranges between 12-15mm) and this coat is called as a Rough coat or Primary coat,
  • The second coat should be laid with the thickness of 8mm and this is called as a Finish coat or Secondary coat of plastering. Plastering Estimate

Total Plastering = First coat + Second Coat How to Find Plastering Quantity

How much cement do I need to make a 12mm plaster?

Plastering Work Ratio Calculation – For a better understanding, we are going to do this calculation for 100 Sq.m area.

  • To calculate the cement and sand for 100 m 2 plastering area in 1:6 ratio and 12 mm thickness.
  • Cement Mortar Required :
  • Plastering thickness 12 mm = 12/1000 = 0.012m
  • Volume of cement mortar required = ( Plastering Area x thickness )

= 100 m 2 x 0.012m = 1.2 m 3 (This is wet volume that means we need this much volume of cement mortar after mixing water, So for dry volume, we have to add 30-35% as bulkage of sand, we are using 35% and wastage as 20%) Consider 35% Sand Bulkage = 1.2 m 3 x (1+0.2+0.35) (Many of us would use 1.54 as constant)

  1. = 1.86 m 3
  2. Cement : Sand (Ratio) = 1 : 6 ( Total = 1+6 = 7 Parts )
  3. Cement required (1 Part) = 1.86 x 1/7
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= 0.265 m 3 /0.0347

  • = 7.66 bags (Approx – 8 Bags)
  • Sand required (5 Part) = 1.86 x 6/7
  • = 1.59 m 3

We normally use Sq.m while calculating plastering cement mortar. If you want to calculate it in Sq.ft Just convert that sq.ft into Sqm using and then use this formula.

How do you calculate the volume of sand in cement mortar?

Plastering Work Ratio Calculation – For a better understanding, we are going to do this calculation for 100 Sq.m area.

  • To calculate the cement and sand for 100 m 2 plastering area in 1:6 ratio and 12 mm thickness.
  • Cement Mortar Required :
  • Plastering thickness 12 mm = 12/1000 = 0.012m
  • Volume of cement mortar required = ( Plastering Area x thickness )

= 100 m 2 x 0.012m = 1.2 m 3 (This is wet volume that means we need this much volume of cement mortar after mixing water, So for dry volume, we have to add 30-35% as bulkage of sand, we are using 35% and wastage as 20%) Consider 35% Sand Bulkage = 1.2 m 3 x (1+0.2+0.35) (Many of us would use 1.54 as constant)

  1. = 1.86 m 3
  2. Cement : Sand (Ratio) = 1 : 6 ( Total = 1+6 = 7 Parts )
  3. Cement required (1 Part) = 1.86 x 1/7

= 0.265 m 3 /0.0347

  • = 7.66 bags (Approx – 8 Bags)
  • Sand required (5 Part) = 1.86 x 6/7
  • = 1.59 m 3

We normally use Sq.m while calculating plastering cement mortar. If you want to calculate it in Sq.ft Just convert that sq.ft into Sqm using and then use this formula.