* 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

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 building estimation in 6 steps

The following building estimation 7 steps for a double room.

- In foundation excavated earth quantity,
- In foundation cement concrete quantity,
- CRS wall in the foundation quantity,
- Plinth beam quantity
- Dampproof course quantity,
- 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.No | Description of work | No | Length(m) | Breadth(m) | Depth/Height | Quantity |

1 | Excavated earth quantity in foundation | |||||

Long wall quantity | 2 | 11.7 m | 1.10 m | 1 m | 25.74 cum | |

Short wall quantity | 3 | 5.2 m | 1.10 m | 1 m | 17.16 cum | |

Total quantity | 42.9 cum |

### 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.No | Description of work | No | Length(m) | Breadth(m) | Depth/Height | Quantity |

2 | Cement concrete quantity in foundation | |||||

Long wall quantity | 2 | 11.7 m | 1.10 m | 0.3 m | 7.72 cum | |

Short wall quantity | 3 | 5.2 m | 1.10 m | 0.3 m | 5.15 cum | |

Total quantity | 12.87 cum |

### 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.No | Description of work | No | Length(m) | Breadth(m) | Depth/Height | Quantity |

3 | CRS wall quantity in foundation | |||||

Long wall quantity | ||||||

1st footing quantity | 2 | 11.4 m | 0.8 m | 0.2 m | 3.65 cum | |

2nd footing quantity | 2 | 11.3 m | 0.7 m | 0.1 m | 1.58 cum | |

3rd footing quantity | 2 | 11.2 m | 0.6 m | 0.1 m | 1.34 cum | |

4th footing quantity | 2 | 11.1 m | 0.5 m | 0.1 m | 1.11 cum | |

Short wall quantity | ||||||

1st footing quantity | 3 | 5.5 m | 0.8 m | 0.2 m | 2.64 cum | |

2nd footing quantity | 3 | 5.6 m | 0.7 m | 0.1 m | 1.18 cum | |

3rd footing quantity | 3 | 5.7 m | 0.6 m | 0.1 m | 1.03 cum | |

4th footing quantity | 3 | 5.8 m | 0.5 m | 0.1 m | 0.87 cum | |

Total quantity | 13.4 cum |

### 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.No | Description of work | No | Length(m) | Breadth(m) | Depth/Height | Quantity |

4 | Damp proof course quantity | |||||

Long wall quantity | 2 | 11.0 m | 0.4 m | 8.80 Sq.m | ||

Short wall quantity | 3 | 5.9 m | 0.4 m | 7.08 Sq.m | ||

Deduct door sills quantity | 2 | 1.2 m | 0.4 m | -0.96 Sq.m | ||

Total quantity | 14.92 Sq.m |

### 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.No | Description of work | No | Length(m) | Breadth(m) | Depth/Height | Quantity |

5 | Plinth beam quantity | |||||

Long wall quantity | 2 | 11.0 m | 0.4 m | 0.8 m | 7.04 cum | |

Short wall quantity | 3 | 5.9 m | 0.4 m | 0.8 m | 5.66 cum | |

Total quantity | 12.7 cum |

### 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.No | Description of work | No | Length(m) | Breadth(m) | Depth/Height | Quantity |

6 | 1st class brick work quantity in super structure | |||||

Long wall quantity | 2 | 10.9 m | 0.3 m | 4.2 m | 27.42 cum | |

Short wall quantity | 3 | 6 m | 0.3 m | 4.2 m | 22.68 cum | |

Deductions | ||||||

Door openings quantity | 2 | 1.2 m | 0.3 m | 2.1 m | 1.51 cum | |

window openings quantity | 4 | 1 m | 0.3 m | 1.5 m | 1.80 cum | |

Shelves quantity | 2 | 1 m | 0.2 m | 1.5 m | 0.6 cum | |

Lintels over doors quantity | 2 | 1.5 m | 0.3 m | 0.15 m | 0.14 cum | |

Lintels over windows quantity | 4 | 1.3 m | 0.3 m | 0.15 m | 0.23 cum | |

Lintels over shelves quantity | 2 | 1.3 m | 0.3 m | 0.15 m | 0.12 cum | |

Total quantity | 45.75 cum |

### Conclusion

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

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