Double room building estimation|6 steps

double room plan

Double room building estimation can be calculated by estimating earthwork in excavation,foundation concrete,plinth beam,1st class brickwork, cement concrete quantity.

Double room building estimation specifications, drawings

double room plan
double room plan

The following are the double room building estimation specifications

  • In foundation cement concrete M25 is utilised.
  • CRS wall is utilised in the foundation for the base of the brick wall.
  • Plinth beam 400 mm x 600mm is utilised in cement concrete M25
  • Dampproof course 25mm thick is applied.
  • In superstructure 1st class brickwork in 1:4 cement mortar and thickness 300mm is utilised.
  • Doors D ,size-1.2 m x 2.1 m
  • windows W,size-1 m x 1.5 m,Shelves S-1 m x 1.5 m 
double room section
double room section

Double room building estimation in 6 steps

The following building estimation 7 steps for a double room.

  1. In foundation excavated earth quantity,
  2. In foundation cement concrete quantity,
  3. CRS wall in the foundation quantity,
  4. Plinth beam quantity
  5. Dampproof course quantity,
  6. In superstructure 1st class brickwork quantity

Note: This building estimation is only limited up to brick walls quantity in the superstructure.

Length of the long wall from centre to centre =4 m + 6 m + 0.3 m+0.5×0.3 m +0.5×0.3 m=10.6 m

length of short walls from centre to centre = 6 m +0.5×0.3 m +0.5×0.3 m=6.3 m

1.Excavated earth quantity in foundation

Longwall length of excavated earth in foundation can be calculated by =10.6 m +0.5 x 1.1 m +0.5×1.1 m=11.7 m

Short wall length of excavated earth in foundation can be calculated by =6.3 m -0.5×1.1 m-0.5×1.1 m=5.2 m

S.NoDescription of workNoLength(m)Breadth(m)Depth/HeightQuantity
1Excavated earth quantity in foundation
Long wall quantity2 11.7 m1.10 m1 m25.74 cum
Short wall quantity35.2 m1.10 m1 m17.16 cum
Total quantity42.9 cum
Double room Earth work quantity estimation sheet

2.Cement concrete quantity in foundation

Longwall length of cement concrete earth in foundation can be calculated by =10.6 m +0.5 x 1.1 m +0.5×1.1 m=11.7 m

Short wall length of cement concrete in foundation can be calculated by =6.3 m -0.5×1.1 m-0.5×1.1 m=5.2 m

S.NoDescription of workNoLength(m)Breadth(m)Depth/HeightQuantity
2Cement concrete quantity in foundation
Long wall quantity2 11.7 m1.10 m0.3 m7.72 cum
Short wall quantity35.2 m1.10 m0.3 m5.15 cum
Total quantity12.87 cum
Double room Cement concrete quantity in foundation estimation sheet

3.CRS wall quantity in foundation

Long wall length of CRS wall in foundation

In 1st footing can be calculated by =10.6 m +0.5 x 0.8 m +0.5 x 0.8 m=11.4 m

In 2nd footing can be calculated by =10.6 m +0.5 x 0.7 m +0.5 x 0.7 m=11.3 m

In 3rd footing can be calculated by =10.6 m +0.5 x 0.6 m +0.5 x 0.6 m=11.2 m

In 4th footing can be calculated by =10.6 m +0.5 x 0.5 m +0.5 x 0.5 m=11.1 m

Short wall length of CRS wall in foundation

In 1st footing can be calculated by =6.3 m -0.5 x 0.8 m -0.5 x 0.8 m=5.5 m

In 2nd footing can be calculated by =6.3 m -0.5 x 0.7 m -0.5 x 0.7 m=5.6 m

In 3rd footing can be calculated by =6.3 m -0.5 x 0.6 m -0.5 x 0.6 m=5.7 m

In 4th footing can be calculated by =6.3 m -0.5 x 0.5 m -0.5 x 0.5 m=5.8 m

S.NoDescription of workNoLength(m)Breadth(m)Depth/HeightQuantity
3CRS wall quantity in foundation
Long wall quantity
1st footing quantity211.4 m0.8 m0.2 m3.65 cum
2nd footing quantity211.3 m0.7 m0.1 m1.58 cum
3rd footing quantity211.2 m0.6 m0.1 m1.34 cum
4th footing quantity211.1 m0.5 m0.1 m1.11 cum
Short wall quantity
1st footing quantity35.5 m0.8 m0.2 m2.64 cum
2nd footing quantity35.6 m0.7 m0.1 m1.18 cum
3rd footing quantity35.7 m0.6 m0.1 m1.03 cum
4th footing quantity35.8 m0.5 m0.1 m0.87 cum
Total quantity13.4 cum
Double room CRS wall quantity in foundation estimation sheet

4.Dampproof course quantity

25 mm thick damp proof course is laid and considered in building estimation.

Longwall length for damp proof course can be calculated by =10.6 m +0.4 x 0.5 m +0.4×0.5 m=11 m

Short wall length for damp proof course can be calculated by =6.3 m -0.5×0.4 m-0.5×0.4 m=5.9 m

S.NoDescription of workNoLength(m)Breadth(m)Depth/HeightQuantity
4Damp proof course quantity
Long wall quantity2 11.0 m0.4 m8.80 Sq.m
Short wall quantity35.9 m0.4 m7.08 Sq.m
Deduct door sills quantity21.2 m0.4 m-0.96 Sq.m
Total quantity14.92 Sq.m
Double room Damp proof course quantity estimation sheet

5.Plinth beam quantity

Longwall length of plinth beam can be calculated by =10.6 m +0.4 x 0.5 m +0.4 x 0.5 m=11 m

Short wall length of plinth beam can be calculated by =6.3 m -0.5 x 0.4 m-0.5 x 0.4 m=5.9 m

S.NoDescription of workNoLength(m)Breadth(m)Depth/HeightQuantity
5Plinth beam quantity
Long wall quantity2 11.0 m0.4 m0.8 m7.04 cum
Short wall quantity35.9 m0.4 m0.8 m5.66 cum
Total quantity12.7 cum
Double room Plinth beam quantity estimation sheet

6.1st class brick work quantity in superstructure

1st class brick work is laid in 1:4 cement mortar with 300 mm thick in building estimation is used.

Center to center Long-wall length of brick wall can be calculated by =10.6 m +0.3 x 0.5 m +0.3 x 0.5 m=10.9 m

Center to center Short wall length of plinth beam can be calculated by =6.3 m -0.3 x 0.4 m-0.3 x 0.4 m=6 m

S.NoDescription of workNoLength(m)Breadth(m)Depth/HeightQuantity
61st class brick work quantity in super structure
Long wall quantity2 10.9 m0.3 m4.2 m27.42 cum
Short wall quantity36 m0.3 m4.2 m22.68 cum
Deductions
Door openings quantity21.2 m0.3 m2.1 m1.51 cum
window openings quantity41 m0.3 m1.5 m1.80 cum
Shelves quantity21 m0.2 m1.5 m0.6 cum
Lintels over doors quantity21.5 m0.3 m0.15 m0.14 cum
Lintels over windows quantity41.3 m0.3 m0.15 m0.23 cum
Lintels over shelves quantity21.3 m0.3 m0.15 m0.12 cum
Total quantity45.75 cum
Double room Brick work quantity estimation sheet

Conclusion

So from the above 6 steps double room building estimation up to brick wall in superstructure can be done easily.

Read Also:

single room| 5 building estimation items

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About Ashwini Kumar

Ashwini Kumar is a graduate in civil engineering from NIT Warangal. He has 8+ years of experience in the construction field. He is the author, founder of the Easy Home Builds blog

View all posts by Ashwini Kumar →

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