Analysis of Gravity Wall and Cantilever Wall in Terms of Economical Aspects of Varied Height

Oct 13, 2025 by wbrum.org 47 views

Analysis of Gravity Wall and Cantilever Wall in Terms of Economical Aspects of Varied Height

Introduction

Retaining walls are a crucial component in construction, serving to hold soil or other materials that have a height difference. Their primary function is to prevent landslides and maintain slope stability. Among the various types of retaining walls, gravity walls and cantilever walls are two of the most commonly used, each with distinct characteristics and economic advantages, particularly in relation to wall height variations. This article aims to analyze the economic aspects of these two types of retaining walls based on variations in wall height ranging from 1 meter to 10 meters, with the ultimate goal of determining the ideal height for each type of wall to ensure economical and efficient design.

Economic Concepts in Retaining Wall Design

The fundamental concept of building an economical retaining wall is to minimize material and construction costs without compromising the strength and stability of the structure. Several factors influence the economy of retaining walls, including:

Material

Types and quality of the material used will affect the cost of the material. The choice of material plays a significant role in determining the overall cost of the retaining wall. Different materials have varying prices, and the quality of the material can also impact the cost.
Dimensions: The size and shape of the wall will affect the amount of material needed and construction costs. A larger wall will require more material, which can increase the construction cost.
Construction Method: The chosen construction technique will also affect construction costs. Different construction methods have varying levels of complexity, which can impact the overall cost.

Economical Analysis of Gravity Wall and Cantilever Wall

Gravity Wall

A gravity wall generally uses massive concrete or stone material. The strength of the wall is based on its own weight to withstand soil pressure. The main advantage of a gravity wall is that its construction is simple and easy to do.

Cantilever Wall

A cantilever wall uses a more complex design with concrete buffer embedded in the ground. Its strength is obtained from the bending moments produced by the buffer and wall. Cantilever walls are usually more economical for greater wall height.

Results of Economic Analysis

Based on the economic analysis conducted, the following results are obtained:

Gravity Wall

Showing optimal economy at wall height up to 3 meters. If the wall height is more than 3 meters, the cost of material and construction will increase significantly, making it not economical.
Cost-effective for smaller wall heights. Gravity walls are more economical for wall heights up to 3 meters due to the simplicity of their design and the reduced amount of material required.

Cantilever Wall

More economical at wall height of more than 3 meters. The strong supporting structure can withstand greater soil pressure at significant wall height, reducing material and construction costs.
Cost-effective for larger wall heights. Cantilever walls are more economical for wall heights greater than 3 meters due to their ability to withstand greater soil pressure and the reduced amount of material required.

Recommendations for Use

Based on the analysis above, the following recommendations for the use of the two types of retaining walls based on wall height:

Wall Height ≤ 3 meters

Use gravity wall, because it is more economical and easy to construct. Gravity walls are more economical and easier to construct for wall heights up to 3 meters.

Wall Height > 3 meters

Use Cantilever Wall, because it is more economical and strong in withstanding soil pressure at large wall height. Cantilever walls are more economical and stronger in withstanding soil pressure at larger wall heights.

Conclusion

The choice between gravity wall and cantilever wall is very dependent on wall height and structural needs. Appropriate economic analysis can help planners in determining the most effective and economical type of walls for their construction projects. By understanding the characteristics and advantages of each type of wall, planners can build a strong, stable, and economical retaining wall.
Frequently Asked Questions (FAQs) about Gravity Wall and Cantilever Wall

Introduction

In our previous article, we analyzed the economic aspects of gravity walls and cantilever walls based on variations in wall height. We also provided recommendations for the use of each type of wall based on wall height. In this article, we will address some of the most frequently asked questions about gravity walls and cantilever walls.

Q&A

Q: What is the main difference between a gravity wall and a cantilever wall?

A: The main difference between a gravity wall and a cantilever wall is the way they resist soil pressure. A gravity wall relies on its own weight to resist soil pressure, while a cantilever wall uses a more complex design with a concrete buffer embedded in the ground to resist soil pressure.

Q: Which type of wall is more economical for smaller wall heights?

A: Gravity walls are more economical for smaller wall heights (up to 3 meters) due to the simplicity of their design and the reduced amount of material required.

Q: Which type of wall is more economical for larger wall heights?

A: Cantilever walls are more economical for larger wall heights (greater than 3 meters) due to their ability to withstand greater soil pressure and the reduced amount of material required.

Q: What are the advantages of using a gravity wall?

A: The advantages of using a gravity wall include its simplicity of design, ease of construction, and lower material costs.

Q: What are the advantages of using a cantilever wall?

A: The advantages of using a cantilever wall include its ability to withstand greater soil pressure, reduced material costs, and increased stability.

Q: Can a gravity wall be used for larger wall heights?

A: No, gravity walls are not recommended for larger wall heights (greater than 3 meters) due to the increased cost of material and construction.

Q: Can a cantilever wall be used for smaller wall heights?

A: Yes, cantilever walls can be used for smaller wall heights, but they may not be the most economical option due to the complexity of their design.

Q: How can I determine the ideal height for a gravity wall or a cantilever wall?

A: The ideal height for a gravity wall or a cantilever wall can be determined by conducting an economic analysis based on the wall height and structural needs of the project.

Conclusion

We hope that this FAQ article has provided you with a better understanding of gravity walls and cantilever walls. If you have any further questions or concerns, please do not hesitate to contact us.