Building a 1200 Sq Ft House: How Many AAC Blocks Are Required and What Will It Cost?
If you are planning to construct a 1200 sq ft house with two bedrooms, a hall, a kitchen, storage, and two bathrooms, you may be wondering about the number of AAC (Autoclaved Aerated Concrete) blocks required for your walls and how much it will cost. This article will guide you through the calculations and provide an estimation based on standard construction practices.
Step-by-Step Calculation
To estimate the number of AAC blocks needed for a 1200 sq ft house, let's break it down into a few key steps:
1. Calculate the Wall Area
Assuming a typical ceiling height of 9 feet, we can estimate the wall area based on the perimeter of the house's layout. For a simple rectangular structure, the perimeter calculation is as follows:
Perimeter Calculation:
Assuming a layout of approximately 30 ft x 40 ft, the perimeter is calculated as: Perimeter 2 * (length width) 2 * (30 ft 40 ft) 140 ftNow, we calculate the total wall area:
Wall Area Perimeter * Height 140 ft * 9 ft 1260 sq ft2. Subtract Area for Openings
Next, we need to subtract the area occupied by doors and windows to get the net wall area:
Doors: 2 doors at 21 sq ft each, totaling 42 sq ft Windows: 6 windows at 15 sq ft each, totaling 90 sq ft Total openings: 42 sq ft 90 sq ft 132 sq ftTherefore, the net wall area is:
Net Wall Area Total Wall Area - Total Openings 1260 sq ft - 132 sq ft 1128 sq ft
3. AAC Block Size and Quantity
AAC blocks are typically available in 600 mm x 200 mm x 100 mm (24 in x 8 in x 4 in) dimensions. Each block contributes an area of approximately 2 sq ft when considering the face area. Thus, the number of blocks required is calculated as:
Number of Blocks Net Wall Area / Area of One Block 1128 sq ft / 2 sq ft per block 564 blocks
4. Cost Estimation
The cost of AAC blocks can vary based on regional differences and suppliers. According to recent average market rates, the cost ranges from $1.50 to $3.00 per block. Assuming an average cost of $2.00 per block:
Total Cost Number of Blocks * Average Cost 564 blocks * $2.00 USD/block $1128 USD
Summary
In conclusion, for a 1200 sq ft house, you would need approximately 564 AAC blocks, with an estimated cost of around $1128 USD, based on an average cost of $2.00 per block.
Note: This estimation is based on standard construction practices and a simplified layout. Actual requirements may vary based on architectural designs, structural requirements, and local building codes. It is advisable to consult with a contractor or an architect for more accurate estimates tailored to your specific project.