Retaining wall design 10 editionth a design guide for earth retaining structures contents at a glance.
Brick retaining wall design guide.
Mass retaining walls are not generally considered to be economic over a height of 1800mm when constructed of brick or concrete and 1000mm high in the case of natural stonework.
Walling guide no 4.
A retaining wall made entirely out of brick is known as a cavity wall.
A garden retaining wall of up to 400mm high can be built out of a single skin wall of facing bricks or concrete block.
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.
Earthquake seismic design 7.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
Manufacturer s recommendations should be followed regarding the capacity of their particular system for the soil loads under consideration.
Soil mechanics simplified 4.
Between them is a gap for steel that runs up from the foundation to the top of the wall.
Design for earth loads retaining walls which set out a design methodology and safe load tables for these structures.
This design is composed of two standard brick walls just inches apart that share the same foundation.
Please note that the gravity wall chart provided has specific heights for specific site and soil conditions.
Design procedure overview 3.
This is not meant to be a final authority as each project has its own set of unique situations.
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.
Design sequence design problem quick solution detailed method 1 determine the wind class local authority see as 1170 2 for the site or as 4055 2 convert wind class to pressure table 1 see section 5 2 3 convert wind pressure to tables 2 3 see section 5 2 1.
If you are not sure of your site conditions we recommend being conservative with your retaining wall heights or use geogrid in your retaining wall.
To mark a free form layout use a rope or hose to outline the shape.
Soil bearing and stability 8.
Forces on retaining walls 6.
Segmental retaining walls can be designed as either conventional or as reinforced soil as illustrated in figure 1.
Your retaining wall design will determine how you mark the area.
Building codes and retaining walls 5.
Follow the block manufacturer s instructions for wall height limits.
Structural design design of free standing clay brick walls 5 figure 1.
A wall any higher than this needs to be thicker and there are several ways of achieving this.
The structural capacity of the srw system will vary with the srw unit size shape batter etc.
Bricks can be laid in two skins which can be held together by mesh or built as a 225mm thick wall as shown in the laying bricks project.
