Concrete Block Concrete Retaining Wall Footing Design

However for even the most modest block structure to have enough rigidity to bear pressure and weight it needs proper footing.

Concrete block concrete retaining wall footing design.

Numerous textbooks and technical papers on soil mechanics foundation engineering concrete design masonry design and in all sorts of related topics. Foundation all concrete block walls must rest on a sturdy foundation of poured concrete. The concrete design mix is normally 35 to 50kn mm2 in strength and there is no steel reinforcement in the blocks. Despite the many references a single volume on retaining wall design for the professional practitioner and civil engineering student could not be found.

There is no need for a heavy foundation. Concrete blocks are a common building material for a variety of outdoor projects such as retaining walls and out buildings like garages and tool sheds. The footing should be at least as thick vertically as the wall s planned width. It should be compacted to at least 95 standard proctor compaction test.

Determine the planned wall s height and width. This article shows you how to install one in a weekend. Aug 17 2019 explore donald cawood pope s board concrete block retaining wall on pinterest. Concrete strengths less than this will reduce the design life of the blocks.

Before you begin you ll need to design the layout and pour the footing. A concrete block retaining wall is the perfect solution to control erosion to eliminate a hard to mow slope to add a planting bed or to level an ideal patio area. Concrete strength al ൯ne for an 10 thick wall with 5 10 and 2 5 clear to strength steel will only reduce the nominal moment capacity of the secti對on from 136 68 to 135 66 inch kips 尩 if the concrete strength decreased from 3 5 to 3 0 ksi. Foundation soil preparation for concrete block retaining walls foundation soil under the basement should be excavated in accordance with drawings of the concrete block retaining wall design.

Expect to spend 20 36 hours building a 3x10 foot concrete block retaining wall. A poured concrete footing for concrete block or brick walls should be at least twice as wide as the planned wall. The depth and size of the foundation will vary depending on the size of the concrete block wall and the weight it must support but a typical freestanding wall requires a foundation that is about twice as wide as the wall itself and which extends about 1 foot down below the frost line. See more ideas about concrete block retaining wall retaining wall building a retaining wall.

The footing dimensions will largely be determined by the size of the wall. Insert rebar in the footing when you pour it.