# Rate analysis for plaster work- calculate quantity and cost

Plaster work is an essential step in any construction project, whether it is for a residential, commercial or industrial building. It not only provides a smooth and attractive finish to the walls and ceilings, but also adds strength and durability to the structure. However, before embarking on a plastering project, it is important to calculate the required quantity and cost of materials accurately. This is where rate analysis for plaster work plays a crucial role. In this article, we will delve into the details of rate analysis for plaster work, its importance, and how to effectively calculate the quantity and cost for a successful and cost-effective project.

## Rate analysis for plaster work

Rate analysis for plaster work is a crucial aspect of any construction project as it helps to estimate the cost and quantity of materials required for plastering works. Plastering is a process of covering walls and ceilings with a smooth, durable, and aesthetically pleasing layer of cement mortar or gypsum.

The rate analysis for plaster work is performed based on the types and thickness of plaster, number of coats, and the type of surface to be plastered. Here are the key steps involved in rate analysis for plaster work:

1. Calculation of Plastering Area: The first step is to calculate the total area to be plastered. The area is measured in square feet or square meters, depending on the unit system used in the project.

2. Selection of Plastering Materials: The type of plaster and its thickness play a vital role in the rate analysis. The most commonly used plasters are cement plaster, lime plaster, and gypsum plaster. The rate of the materials will vary based on their quality and availability.

3. Estimation of Material Quantity: Once the type of plaster is finalized, the next step is to estimate the quantity of materials required. This includes cement, sand, and water for cement plaster, and gypsum, sand, and water for gypsum plaster. The quantity is calculated based on the plastering area, thickness of the plaster, and the number of coats.

4. Labor Cost: Labor is another significant factor in the rate analysis for plaster work. The cost of labor is calculated based on the labor rate per day and the number of laborers required for the project.

5. Cost of Other Expenses: Other expenses such as transportation, tools, and equipment cost, and overhead charges are also considered in the rate analysis.

6. Cost of Finishing Materials: After the plastering is completed, the surface requires finishing with paint, tiles, or other materials. The cost of these finishing materials is also considered in the rate analysis.

7. Calculation of Overheads: Overheads include indirect costs such as administrative expenses, cost of supervision, and contingencies. These costs are calculated as a percentage of the total material, labor, and other expenses.

8. Calculation of Total Cost: The total cost of plastering work is calculated by adding the cost of materials, labor, other expenses, and overheads. The cost is then divided by the total area of plastering to get the cost per square foot or square meter.

Rate analysis for plaster work is essential as it helps to estimate the total cost of the project accurately. It also helps to compare the rates provided by different contractors and select the one that offers the best value for money. Moreover, it helps to keep track of the expenses and manage the budget effectively. A detailed and accurate rate analysis for plaster work is crucial for the success of any construction project.

## Rate analysis for 20mm (1:6) thick plaster per sq meter

Rate analysis is a method used in civil engineering to determine the cost of construction materials and labor for a particular project. In this article, we will discuss rate analysis for 20mm (1:6) thick plaster per square meter.

Plastering is one of the essential components of construction, which helps to create a smooth and even surface on walls and ceilings. It also provides protection to the underlying structure and enhances the aesthetic appeal of the building. The thickness of the plaster plays a vital role in determining the strength and durability of the surface.

Rate analysis for 20mm (1:6) thick plaster per square meter refers to the calculations required to estimate the total cost of materials and labor required for plastering a surface of 1 square meter with a thickness of 20mm and a mix ratio of 1:6 (one part of cement and six parts of sand).

Materials Required:
– Cement: The primary binding agent in plaster is cement, which provides strength and adhesion to the surface.
– Sand: Sand acts as a filler and helps to create a smooth surface.
– Water: Water is required for the chemical reaction to take place, resulting in the hardening and binding of the plaster mix.
– Labor: Skilled workers are required for the mixing, application, and finishing of the plaster.

Calculation:
The following are the steps involved in the rate analysis for 20mm (1:6) thick plaster per square meter:

1. Determine the quantity of cement:
The first step is to calculate the quantity of cement required for plastering 1 square meter with a thickness of 20mm. The standard mix ratio for cement and sand in plastering is 1:6. Therefore, the amount of cement required can be calculated as:
Cement quantity = (1 / 7) x 1 cubic meter = 0.1429 cubic meter

2. Determine the quantity of sand:
Sand quantity = (6 / 7) x 1 cubic meter = 0.8571 cubic meter

3. Determine the quantity of water:
The amount of water required depends on factors such as humidity and temperature. A typical ratio for water to cement is 0.4, which means 0.4 parts of water for every 1 part of cement. Therefore, the quantity of water needed can be calculated as:
Water quantity = (0.4 / 7) x 1 cubic meter = 0.0571 cubic meter

4. Calculate the total cost of materials:
The cost of materials can be determined by multiplying the quantities of cement, sand, and water with their respective market rates. For example, if the rate of cement is \$10 per cubic meter, sand is \$8 per cubic meter, and water is \$1 per cubic meter, the total cost of materials would be:
Cement cost = \$10 x 0.1429 = \$1.429
Sand cost = \$8 x 0.8571 = \$6.857
Water cost = \$1 x 0.0571 = \$0.057
Total material cost = \$1.429 + \$6.857 + \$0.057 = \$8.343

5. Determine the cost of labor:
The cost of labor can be calculated by multiplying the total time required for plastering with the daily wages of the workers involved. For instance, if the total labor time is 10 hours, and the daily wage of

## Rate analysis for 12mm (1:6) thick plaster per sq meter

Rate analysis is an important aspect of any construction project. It involves the calculation of materials, labor, and other costs required to complete a specific task. In this article, we will discuss rate analysis for 12mm (1:6) thick plaster per square meter.

12mm (1:6) thick plaster refers to the thickness of the plaster and the ratio of cement and sand used in the mixture. This type of plaster is commonly used for internal walls and ceilings in residential and commercial buildings. The first step in rate analysis is to identify the various components required for this task.

Materials Required:

1. Cement: The amount of cement required for plastering per square meter can be calculated by multiplying the plaster thickness (12mm) by the area to be covered. For example, if the area to be plastered is 10 square meters, then the total amount of cement required would be 0.12 cubic meters (10 sqm x 0.012m = 0.12 m3).

2. Sand: The amount of sand required for plastering can be calculated by multiplying the area to be plastered by the plaster thickness and the sand ratio. In this case, it would be 10 square meters x 0.12m x 6 = 7.2 cubic meters.

3. Water: The amount of water required for plastering is usually a percentage of the cement used. For 1 cubic meter of cement, approximately 0.7 cubic meters of water is needed.

Labor Cost:

The next step is to calculate the labor cost involved in plastering per square meter. This can vary depending on the location, availability of labor, and the contractor’s rates. It is important to factor in the wages, transportation, and other expenses associated with labor.

Overhead costs are indirect expenses that cannot be directly linked to a particular task but are essential for the overall project. This can include equipment and machinery, transportation, electricity, and other administrative costs. These costs are usually calculated as a percentage of the total material and labor cost.

Profit Margin:

Profit margin is the percentage of profit that the contractor expects to earn from the project. This can vary depending on the contractor’s experience, market conditions, and competition. Typically, the profit margin for a construction project ranges from 10% to 20%.

Once all the above costs have been calculated, the rate per square meter for 12mm (1:6) thick plaster can be determined by adding the material cost, labor cost, overheads, and profit margin. Here is a sample calculation:

Material Cost:
Cement = 0.12 m3 x \$100/m3 = \$12
Sand = 7.2 m3 x \$50/m3 = \$360
Water= 0.12 m3 x \$50/m3 = \$6

Labor Cost:
Assuming labor cost per square meter is \$10,
Labor cost = 10 sqm x \$10 = \$100

Assuming overhead cost is 15% of material and labor cost (\$12 + \$360 + \$6 + \$100 = \$478),
Overhead cost = 15% x \$478 = \$71.7

Profit Margin:
Assuming the profit margin is 15% of total cost (\$478 + \$71.7 = \$549.7),
Profit margin = 15% x \$549.7 = \$82.46

## Rate analysis for 6mm (1:4) thick plaster per sq meter

Rate analysis is an essential aspect of any construction project, especially for civil engineers who are responsible for estimating the cost of materials and labor. In this article, we will discuss the rate analysis for 6mm (1:4) thick plaster per square meter.

Rate analysis is the process of determining the cost of a construction project by calculating the quantities of materials and labor required. It involves breaking down the total cost into various components and analyzing each component separately. By doing so, it provides a detailed understanding of how much a particular item or task will cost and helps in budgeting and cost control.

Plaster is a common material used in construction for finishing walls and ceilings. It is a mixture of cement, sand, and water, which is applied in a thin layer to provide a smooth and durable surface. The thickness of plaster varies depending on the type of surface and the desired finish. For this rate analysis, we will consider 6mm thick (1:4) plaster, where 1 part is cement and 4 parts are sand.

The following are the step-by-step procedure for rate analysis of 6mm thick plaster per square meter:

1. Material calculations: The first step is to calculate the quantities of materials required for 1 square meter of 6mm thick plaster. In this case, the material proportion is 1:4 for cement and sand. So, for 1 square meter plaster, we need 0.012 cubic meters of cement (1/5.5 x 0.072 = 0.012) and 0.047 cubic meters of sand (4/5.5 x 0.072 = 0.047).

2. Material rates: The next step is to determine the rates of the materials. The rates may vary depending on location and suppliers. For this example, let us assume the rate of cement is \$10 per cubic meter and sand is \$25 per cubic meter.

3. Material cost: The material cost is calculated by multiplying the quantity of material required by its rate. In our example, the cost of cement will be \$10 x 0.012 = \$0.12 and sand will be \$25 x 0.047 = \$1.18.

4. Labor cost: The next component is the labor cost, which includes the wages of workers, their transportation, and other expenses. The labor cost also varies depending on the location and skill level of workers. Let us assume the labor cost for plastering is \$5 per square meter.

5. Total cost of plaster: The total cost of plaster is the sum of material cost and labor cost. In this case, the total cost of 6mm (1:4) thick plaster per square meter will be \$0.12 (material cost) + \$1.18 (labor cost) = \$1.30.

6. Profit and overheads: It is essential to include a percentage for profit and overheads, which covers the project’s administrative and other indirect expenses. The standard percentage for profit and overheads is around 10-15%. For our example, let us take 13% of the total cost of plaster, which is \$1.30 x 13% = \$0.17.

7. Grand total cost: The grand total cost is the sum of the total cost of plaster (\$1.30) and profit and overheads (\$0.17). Therefore, the grand total cost of 6

## Conclusion

In conclusion, understanding the rate analysis for plaster work is essential for accurately calculating the quantity and cost of materials required for a project. By carefully taking into consideration factors such as area to be covered, thickness of plaster, and type of materials, one can determine the most efficient and cost-effective way to execute plaster work. With the help of proper calculations and rate analysis, one can avoid wastage of materials and unnecessary expenses, resulting in a successful and profitable project. It is important to regularly update and track the rate analysis to ensure that the project stays within budget and meets the desired quality standards. Overall, rate analysis for plaster work is an important tool for contractors and builders to make informed decisions and maximize their profitability.