Cost-Effective Methods to Build A Retaining Wall

Cost-Effective Methods to Build A Retaining Wall

A concrete retaining wall can be constructed in different layouts and designs, dependent on its location and function. To build one is vastly different from constructing a regular wall.

Open- and closed-face versions allow them to serve different functions. When looking at cost-effective methods to approach this type of construction, you need quality building blocks at fair prices. This ensures the integrity of the finished product. MVA Bricks offers a variety of concrete retaining-wall blocks (CRBs) in this category.

To comply with the building requirements set out by the SABS and SANS 10400 regarding the construction of retaining walls in South Africa, every structure that retains soil should have its plans drawn up by a civil engineer and approved before construction can start. Of course, it has to be cost-effective as well, yet not compromise on safety standards. The correct methods to build retaining walls starts with the engineer’s plans and layout of the structure. These aspects come into play when the foundation and excavation limits are surveyed.

Building It

During the surveyance process, the appropriate method is to set excavation limits to plot the area of the retaining wall before excavating the trench for the foundation. Identifying beforehand where the structure will bend to follow a natural curve on the slope makes the whole process less time-consuming and therefore more cost-effective and should not be overlooked before the foundation is installed. When building such structures, it is vital to follow the engineer’s design and layout to the letter for optimal soil retention and structural integrity.

Should the intended retaining wall be lower than 1,2 m, a well-compacted foundation base with a depth of 100 mm is sufficient to support it. However, the higher it is, the more it will experience natural forces and the higher the loads on the foundation will be. Drainpipes must also be installed at the correct angle to achieve positive gravity-flow drainage to allow for stormwater to flow naturally from the structure. This is one of the most cost-effective methods to achieve water drainage, where the job is left to gravity. To build the foundation, concrete of a specified density is poured into the excavated area to ensure that the top elevation of the foundation is level with the ground.

Should the plans of the civil engineer dictate that the base angle of your retaining wall be rotated, cast the top level of the concrete in accordance with the desired base-section angle. When working with a level foundation, you want to place one CRB unit at the lowest point to form a reference point from where the stack will start. To ensure that there are no kinks or unevenness in the wall, place a unit at each step-up point to plan ahead when you build the structure. This cost-effective method will save valuable time and endless headaches throughout the construction phase.

MVA Bricks is your supplier of construction blocks to build retaining walls. We offer cost-effective methods to construct these walls by delivering quality concrete blocks at fair prices for your business. For more information on our selection, please browse our website for images, dimensions, and pallet details on each design.