Calculation of Plastering Area for a Brick Wall in Cement Mortar 1:6

This article will walk you through the process of calculating the total plastering area for a brick wall, considering the thickness of the plaster layer and the dimensions of the wall. We'll use a specific example involving a cement mortar with a mix ratio of 1:6 and a thickness of 12mm. The goal is to determine the total surface area to be plastered, taking into account the dimensions of the wall and any openings.

Introduction to Plastering

Plastering, a crucial construction technique, involves applying a layer of plaster to walls and ceilings for leveling, finishing, and sometimes insulation. The choice of material can significantly impact the process. In this case, we'll be working with a specific type of cement mortar with a mix ratio of 1:6 (cement to sand). The thickness of the plaster layer will be 12mm.

Personal Example and Context

Let's consider a specific scenario to understand the calculation process. Our wall is a 1-brick thick wall on both faces, with dimensions of 6m x 3m. This can be visualized as a wall that extends for a length of 6 meters and a height of 3 meters, with each brick layer contributing to its thickness. In addition to this, there is an opening in the wall with dimensions of 1m x 2m, which will need to be deducted from the total plastering area to find the net area to be plastered.

Step-by-Step Calculation

The calculation of the plastering area can be broken down into the following steps:

Step 1: Calculate the Total Area of the Wall

First, we need to calculate the total area of the wall before considering any openings. The formula to find the surface area of a rectangular wall is:

Total Surface Area Length x Height

Given the dimensions of the wall:

Length 6m, Height 3m

Total Surface Area 6m x 3m 18m2

Since the plastering is applied on both sides of the wall, we need to double this area:

Total Area for Both Sides 18m2 x 2 36m2

Step 2: Deduct the Opening Area

Next, we need to deduct the area of the opening from the total area. The dimensions of the opening are 1m x 2m:

Deducted Area 1m x 2m 2m2

Therefore, the adjusted area for both sides of the wall after accounting for the opening would be:

Adjusted Area 36m2 - 2m2 34m2

Step 3: Add for Vertical Sides of the Opening

Additionally, we need to account for the vertical sides of the opening. The height of the vertical sides is the height of the wall, which is 3m. However, we only need to consider the sides that are parallel to the 6m length of the wall:

Area for Vertical Sides 2 x (Height x Side Length) 2 x (3m x 2m) 12m2

Step 4: Calculate the Net Plastering Area

Finally, we add the area of the vertical sides to the adjusted area to obtain the net plastering area:

Net Plastering Area Adjusted Area Area for Vertical Sides

Net Plastering Area 34m2 12m2 46m2

Conclusion

Based on the calculations, the net plastering area for the brick wall, considering the thickness of the plaster layer and the dimensions of the wall, is 46 square meters. This includes the 1:6 cement mortar and 12mm thickness, and adjustments for both the opening and the vertical sides of the door.