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.

Brick retaining wall design guide.

Between them is a gap for steel that runs up from the foundation to the top of the wall. 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. Design procedure overview 3. Soil mechanics simplified 4.

To mark a free form layout use a rope or hose to outline the shape. Soil bearing and stability 8. 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. 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.

A wall any higher than this needs to be thicker and there are several ways of achieving this. Earthquake seismic design 7. Retaining wall design 10 editionth a design guide for earth retaining structures contents at a glance. Your retaining wall design will determine how you mark the area.

Please note that the gravity wall chart provided has specific heights for specific site and soil conditions. Learn more about gravity wall construction. Structural design design of free standing clay brick walls 5 figure 1. Manufacturer s recommendations should be followed regarding the capacity of their particular system for the soil loads under consideration.

Brick retaining walls typical mass retaining wall details these walls rely mainly on their own mass to overcome the tendency to slide forwards. Gravity walls rely on their own weight and setback to hold up the soil behind them. A garden retaining wall of up to 400mm high can be built out of a single skin wall of facing bricks or concrete block. 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.

Segmental retaining walls can be designed as either conventional or as reinforced soil as illustrated in figure 1. A retaining wall made entirely out of brick is known as a cavity wall. Follow the block manufacturer s instructions for wall height limits. Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.

This design is composed of two standard brick walls just inches apart that share the same foundation. This is not meant to be a final authority as each project has its own set of unique situations. Walling guide no 4. 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.

Forces on retaining walls 6.