Preparing a troublesome site one that includes clay soil or a natural spring for example can raise costs substantially.
Retaining wall specifications timber.
Retaining wall systems include cantilevered round or sawn timber mass wall and crib wall construction.
But a retaining wall made of timber will be straight.
Forces on retaining walls 6.
If you have your retaining wall built figure about 15 per square face foot for a timber wall 20 for an interlocking block system or poured concrete and 25 for a natural stone wall.
Some materials can be used to create curves.
Retaining walls up to 1 m high timber retaining walls up to one metre high can be constructed as shown in figure 1.
On a steep site they give your garden structure highlight natural features and.
10 batter as shown.
Several factors add to the load on a wall including lateral earth pressure from soil surcharge loads axial forces wind forces and impact loads.
Pier and pile foundations 11.
Retaining walls are great for creating terracing and raised gardens where space is limited.
The purpose of this technical data sheet is to provide sufficient detail to enable the correct design and.
Designing the cantilever wall stem 9.
An engineer will be required to plan and design walls greater than one metre including the footings and drainage.
This determines the necessary dimensions of the sleepers and posts.
Earthquake seismic design 7.
Soil bearing and stability 8.
The natural appeal and versatility of timber is ideal for this application.
The heartwood of naturally durable species durability class 1 that are suitable for retaining walls include ironbark grey gum tallowwood forest red gum and bloodwood.
These retaining walls have been used for a long time in australia.
Walls exceeding 400 mm high should have a 1.
Building codes and retaining walls 5.
Walls up to one metre in height follow a basic design and can usually be constructed using standard proprietary wall systems.
Member sizes and post embedment depths shall be as outlined in tables 1 and 2 for preservative treated softwood and hardwood respectively.
Cantilevered tilt up walls 13.
Retaining walls in particular contribute significantly to the surroundings when constructed from timber.
Retaining walls are perfect for creating a focal point in your garden highlighting a special feature or levelling off areas to create a flat lawn.
One of the most important retaining wall specifications to consider is the load that the wall will need to bear.
Timber is a preferred material for landscaping purposes.
In ground durability class 1 timber species or timber preservative treated to h5 should therefore be used.
Counterfort retaining walls 12.
Retaining walls can be constructed with various materials from stone to wood.
Wood retaining walls 14.