Before starting learn these facts:

SN | Nature of work | Type of mortar |

1. | Exposed and water logged areas | Cement or lime mortar of 1:3 |

2. | Damp proof courses and cement concrete roads | Cement mortar of 1:2 |

3. | For RCC works like staris, slab, pillar, lintels,etc. | Cement mortar of 1:3, the concrete mix of 1:2:4 |

4. | For internal and less important work. | Lime cinder mortar of 1:3, cinder or ashes is used in place of sand. |

5. | For Fire Bricks | 1:2 ratio of aluminous and crushed fine powder of fire bricks |

6. | For Parapet & Partition wall | Cement mortar of 1:3 or Lime mortar of 1:1 |

7. | Plastering work | Cement mortar of 1:3 to 1:4 or lime mortar of 1:2 |

8. | Pointing work | Cement mortar of 1:1 to 1:2 |

9. | Reinforced brickwork | Cement mortar of 1:3 |

10. | Stone masonry with best quality stones | Lime mortar of 1:2, eminently hydraulic lime. |

11. | Stone masonry with simple or ordinary stones, bricks,etc | Lime mortar of 1:2 or cement mortar of 1:6, eminently hydraulic lime. |

12. | For brickwork with thin joints | Lime mortar of 1:3, fat lime is used. |

*Assumptions Done*

*Assumptions Done*

Standard Brick Size : 190mm * 90mm * 90 mm

Standard Brick volume without mortar = 0.19* 0.09 * 0.09 = *0.001539 cub.m *

We assume 10 mm for thickness of mortar

Brick size with mortar : (190+10) mm * (90+10) mm * (90+10) mm

*1). Brick calculation *

take brick size = *200mmx100mmx100mm*

convert in meter =*0.2mx0.1mx0.1m*

total volume of one brick with mortar = * 0.2×0.1×0.1*=

**0.002 cub.m**** calculate the numbers of brick for 1cub.m** =

*=*

**1cub.m / 0.002cub. m****of bricks.**

*500 numbers**MORTAR*

*MORTAR*

Total volume of brick = ** 500 * 0.001539** =

*0.7695 cub.m**Volume of Mortar Required = 1- 0.7695 = 0.2305 cub. m*

cement : sand ratio = * 1 : 5*

sum = ** 1+5** =

*6*Total Wet volume of mortar = *0.2305 cub.m*

** t**otal dry mortar requried for 1 cub.m brick masonary=

**0.30 cub. m ( Dry volume is 33% more than wet volume of mortar )***2). cement calculation*

*2). cement calculation*

cement =** ( 0.30 x 1 ) / 6** =

*0.05 cum*convert in KG or mass =

**=**

*0.05 x 1440*

*72KG*convert in cement bag=

**=**

*72/50*

**1.44bag.****3. sand calculation**

**3. sand calculation**

sand = ** ( 0.30 x 5 ) / 6** =

*0.25cum*convert in kg =

**=**

*0.25 x 1440*

*360Kg.*