Begini Cara Mudah Menghitung Material Dan Biaya Plasteran Dinding Rumah | Bangunan

Summary

In this video, the presenter shares a practical guide on how to calculate the materials and costs for plastering a wall. Using a sample wall with specific dimensions, the video explains how to compute the volume of plastering needed, the materials required (cement, sand, and water), and how to apply the SNI standard for material calculations. The presenter uses a 1:4 cement-sand mixture for a standard plaster job and walks through simple formulas to estimate the amounts needed for a project. The video concludes with a discussion on converting these estimates into real-world costs and quantities.

Takeaways

• 😀 The video is about calculating the materials and costs for plastering a wall, specifically focusing on cement, sand, and water usage.
• 😀 The example used in the video shows a wall with dimensions 4 meters in length and 4 meters in height, resulting in an area of 16 square meters to be plastered.
• 😀 The first step in the calculation is determining the volume of the plastering job, which is done by multiplying the length and height of the wall.
• 😀 The next step is calculating the materials required for the plastering, with the key materials being cement, sand, and water.
• 😀 The standard mix for plastering in this example is 1 part cement to 4 parts sand, which is typically used for walls that don’t encounter significant exposure to water.
• 😀 The plaster thickness is assumed to be 15 millimeters (1.5 cm) for this calculation.
• 😀 To calculate the required materials, the video uses standard industry coefficients found in the SNI (Indonesian National Standard) AHSP for plastering, which specifies the amount of each material needed per square meter of plaster.
• 😀 For each square meter of plastering with a 15mm thickness and a 1:4 cement-to-sand mix, 6.240 kg of cement and 0.024 m³ of sand are needed.
• 😀 For the 16 square meters of plastering, the total required materials are 99.84 kg of cement and 0.384 m³ of sand.
• 😀 The video demonstrates how to convert these material quantities into practical units like cement bags (40 kg each) and cubic meters of sand, resulting in approximately 3 bags of cement and 0.5 cubic meters of sand for the entire job.
• 😀 Finally, the video mentions that the cost can be calculated by adding the cost of materials (cement and sand) and the labor cost, with a more detailed breakdown available in the next video.

Q & A

What is the first step in calculating the material requirements for plastering a wall?

The first step is to determine the area to be plastered. This is done by multiplying the width and height of the wall.

How do you calculate the volume of plastering needed for a wall?

To calculate the volume of plastering, multiply the area of the wall by the thickness of the plaster layer. For example, if the area is 16 m² and the thickness is 15 mm, the volume will be 16 m² × 0.015 m = 0.24 m³.

What material mix is typically used for plastering standard walls?

A common material mix for plastering standard walls is 1 part cement (semen) to 4 parts sand (pasir). This mix is usually used for areas not exposed to excessive moisture.

What is the importance of using the SNI standard for calculating material requirements?

The SNI (Indonesian National Standard) provides a reliable and tested reference for calculating the amount of cement, sand, and water required for plastering. It ensures consistency and accuracy in material estimation.

How much cement and sand are required per square meter of plastering?

For every 1 m² of plastering with a thickness of 15 mm, you need approximately 6.24 kg of cement and 0.024 m³ of sand.

How do you calculate the total amount of material needed for a specific plastering area?

To calculate the total material needed, multiply the standard material requirement per m² by the total area to be plastered. For example, for 16 m² of plastering, multiply 6.24 kg of cement by 16 to get the total cement needed.

What is the standard thickness of plaster for a typical wall?

The standard thickness for plaster on a wall is typically 15 mm (0.015 meters).

Why is it necessary to round the amount of sand to 0.5 m³ in this example?

It is rounded to 0.5 m³ because sand is usually purchased in bulk, and buying an exact amount of 0.384 m³ (from the calculation) is impractical for purchasing purposes.

How do you convert cement weight from kilograms to the number of bags?

To convert the weight of cement from kilograms to the number of bags, divide the total weight by the weight of a single bag. For example, if one bag weighs 40 kg, divide 99.84 kg by 40 kg, resulting in 2.5 bags, which is rounded to 3 bags.

What steps follow after determining the amount of material needed for plastering?

After determining the material quantities, you can calculate the total cost by multiplying the material amounts by their respective prices. Labor costs are then added to estimate the total cost for the plastering work.