Retaining Wall Specifications Timber

Retaining walls are great for creating terracing and raised gardens where space is limited.

Retaining wall specifications 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. The natural appeal and versatility of timber is ideal for this application. But a retaining wall made of timber will be straight. Wood retaining walls 14.

Forces on retaining walls 6. Walls up to one metre in height follow a basic design and can usually be constructed using standard proprietary wall systems. On a steep site they give your garden structure highlight natural features and. Gabion walls 16.

Initially constructed from original old railway sleepers our research tells us that around 15 years was a fairly average life span for these class 1 timber hardwood walls. Counterfort retaining walls 12. Building codes and retaining walls 5. This determines the necessary dimensions of the sleepers and posts.

Pier and pile foundations 11. Retaining walls in particular contribute significantly to the surroundings when constructed from timber. Retaining wall systems include cantilevered round or sawn timber mass wall and crib wall construction. Some materials can be used to create curves.

10 batter as shown. Preparing a troublesome site one that includes clay soil or a natural spring for example can raise costs substantially. Soil bearing and stability 8. Walls exceeding 400 mm high should have a 1.

Designing the cantilever wall stem 9. These retaining walls have been used for a long time in australia. Retaining walls up to 1 m high timber retaining walls up to one metre high can be constructed as shown in figure 1. Several factors add to the load on a wall including lateral earth pressure from soil surcharge loads axial forces wind forces and impact loads.

Cantilevered tilt up walls 13. The purpose of this technical data sheet is to provide sufficient detail to enable the correct design and. Earthquake seismic design 7. Member sizes and post embedment depths shall be as outlined in tables 1 and 2 for preservative treated softwood and hardwood respectively.

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. Timber is a preferred material for landscaping purposes. An engineer will be required to plan and design walls greater than one metre including the footings and drainage. Retaining walls can be constructed with various materials from stone to wood.

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.