A retaining wall needs particularly stable concrete blocks

Unlike pure privacy or decorative walls, a retaining wall must have a special static stability. Often, slopes or large terrain elevation differences must be fixed. While most concrete blocks can handle the pure earth load, you have to pay attention to additional traffic loads.

Wall height and stone size

The most common form of retaining wall is loaded on one side by soil. When it comes to tiered beds and borders, usually a good strip foundation and concrete blocks in the clean masonry bandage are sufficient. The wall height should not be more than one meter.

Depending on the available space and the height of the retaining wall and the soil to be kept, the wall structure should be planned individually. While large concrete blocks made of heavy solid concrete have enough stability due to their own weight, hollow block and lightweight concrete blocks should be reinforced or reinforced.

High slopes and traffic loads

From heights of two meters onwards, compulsory building regulations require thorough structural calculations before the construction of the retaining wall. Not only the dimensioning of the concrete blocks plays a decisive role. The allegedly "weakest" limbs of a retaining wall are the joints, which can become the overall stability risk for the retaining wall even at local overload.

With the help of reinforcements, usually reinforcements made of iron bars or iron grids, hollow concrete blocks and grout can be supported. A special form is gabions, which create stability through their stone basket. If additional traffic loads are to be expected above the retaining wall, such as in the case of a walking or driving path, the stability must be increased again.

Appropriate foundation

With a retaining wall, the foundation also has a literal "supporting" task. With wall heights between one and two meters usually still a strip foundation is sufficient, which is provided with Armierungsstäben. The reinforcements must be connected to the concrete blocks.

Stiff foundations develop greater static resistance. They have a "tail" on the side, which is turned away from the ground. The risk of twisting the foundation must be excluded by professional foundation.

Tips & Tricks

With low retaining walls up to one meter in height, you can carry out the construction yourself without much static knowledge. In addition, you should definitely seek the advice of a professional, from two meters height you have to even.

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