The only walls you may be build without plans are those that are considered, by the National Building Regulations to be minor building work. Over the years we’ve had numerous queries from visitors to this site regarding retaining walls, many homeowners wanting to know whether plans are required. It is for this reason that it is essential for all retaining walls to be designed by a competent person, preferably an engineer, and for plans to be drawn up and submitted to the relevant local authority for approval before building begins. If the wall is not designed the right way, it simply won’t resist the pressure of soil or other materials pushing against it, and it might collapse injuring or even killing people. They also deal with retaining walls which, by definition are intended to “resist the lateral displacement of materials”. Part K of SANS 10400, Walls in the National Building Regulations (NBR) covers the structural strength and stability of all walls, including those that form part of a house or other building, and both garden and boundary walls. The Implications of Building Retaining Walls A retaining wall constructed from specially designed, interlocking blocks
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