Here one can get answer of "how many blocks required for 12 by 12 room" with a given size of block, some requirements and considerations in the wall.
How Many Blocks Required For 12 By 12 Room?
Total 507 blocks are required for 12×12 room with 16×8×8 inch block size and 12 mm mortar thickness. In this calculation we have considered the standard height of wall as 10 feet. Read the post to know in detail.
Blocks Required For 12 By 12 Room
We have some requirements and considerations to calculate the number of blocks required for 12 by 12 room.
Requirements in the Room
We have the following requirements in 12 by 12 feet room
- Four walls
- One gate
- One window
Considerations in the Room
We have the following considerations
- Four walls size (10 feet height × 12 feet length or 120 inch height × 144 inch length)
- One gate size (7 feet height × 3 feet width or 84 inch height × 36 inch width)
- One window size (4 feet height × 3 feet width or 84 inch height × 36 inch width)
- Standard lock size (16 inch × 8 inch × 8 inch or 400 × 200 × 200 mm)
- Mortar thickness (12 mm), Generally 10 to 15 mm
- Thickness of wall (8 inch or same as thickness of block)
Calculate Face Area of Each Part of the Room
Face Area of the Complete Walls
= 4 walls × (length of wall × height of wall)
= 4 × (12 feet × 10 feet)
= 480 square feet
Face Area of the Gate
= Height of gate × Width of gate
= 7 feet × 3 feet= 21 square feet
Face Area of the Window
= Height of gate × Width of gate
= 4 feet × 3 feet= 12 square feet
Face Area of a Single Block (Without Mortar)
= Length of Block × Height of Block
= 128 square inch or 0.889 square feet
= (16 inch + 12 mm) × (8 inch + 12 mm)
Face Area of a Single Block (With Mortar)
= (Length of block + Thickness of mortar) × (Height of block + Thickness of mortar)
= (406.4 mm + 12 mm) × (203.2 mm + 12 mm)
= 418.4 mm × 215.2 mm
= 90040 mm² or 0.9692 square feet
Net Face Area of the Wall For Block Masonry Work
Net Face Area of Wall
= Face area of complete wall - Face area of open wall (i.e. Face area of gate + Face area of window)
= 480 square feet - (21 square feet + 12 square feet)
= 447 square feet
Total Number of Blocks in the 12 By 12 Room
Total number of blocks in the room
= Net face area of wall in square feet/ Face area of a single block with mortar
= 447 square feet/0.9692 square feet
= 461.2 Blocks, (Say 461 Blocks).
Taking 10% wastage of blocks during the masonry work, the total number of blocks would be 461 + 10% of 461 = 507.1 Blocks, Say 507 Blocks.
Final Result
Total number of concrete blocks required in 12×12 feet room with one gate and one window is 507 Nos including 10% wastage.
Note: It is important to note that this calculation is an estimate and may vary depending on factors such as the pattern of the brickwork, the size of the mortar joints and the amount of waste generated during construction. It's always a good idea to order a few extra bricks than what you think you'll need in the construction.
