Soil mechanics simplified 4.
Concrete block retaining wall design guide.
Concrete block retaining wall construction consists of number of phases including excavation foundation soil preparation retaining wall base construction concrete block unit placement grouting and drainage system installation.
B short retaining walls vertical walls up to about 3m in height are usually built as shown in figure 1 b.
Building codes and retaining walls 5.
The interlocking retaining wall block can be used to build walls up to 24 to 36 inches high depending on the size of the block.
This is not meant to be a final authority as each project has its own set of unique situations.
Design procedure overview 3.
The intent of this material is to communicate the best practices for design of segmental retaining walls srw as determined by allan block corporation based on 25 plus years of research design and field experience.
N ultimate load design with material factors based on characteristic soil properties partial load factors consistent with as 1170 1 and structure designs to as 3700 and as 3600.
Follow the block manufacturer s instructions for wall height limits.
Forces on retaining walls 6.
Construction of concrete block retaining wall with steps.
These consists of a concrete or masonry wall of uniform thickness vertical wall reinforcing and transverse footing reinforcing are all designed for the lateral shear and cantilever bending movement plus the vertical weights of the wall footing and earth fills.
Walling guide no 4.
Design for earth loads retaining walls which set out a design methodology and safe load tables for these structures.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
These phases are explained briefly.