Retaining Wall Specifications Qld

The batter allows for the wall to have some lateral.

Retaining wall specifications qld.

For treated softwood posts standard 15 mpa n15 concrete backfill is adequate. 1 1 1 6min. The general rule is that a retaining wall should be built entirely within the boundary of one of the properties and not on the common boundary like a fence. Less than one 1 metre high further than 1 5 metres to a building or another retaining wall only supports the soil behind the wall nothing above.

There are also certain practical maximum height requirements depending on the type of material used to build the retaining wall. 10 batter as shown. Retaining walls up to 1 m high timber retaining walls up to one metre high can be constructed as shown in figure 1. The code also requires minimum clearances from roads and side and rear boundaries.

Unless an exemption applies a qbcc contractor s licence is required to carry out or undertake to carry out the construction erection renovation alteration extension improvement or repair of a retaining wall if the value of the work exceeds 3 300 including the cost of materials. Retaining walls need building approval unless they meet all of the following criteria. Walls exceeding 400 mm high should have a 1. Retaining walls are generally made of steel reinforced concrete or concrete blockwork timber sleepers and boulders.

Member sizes and post embedment depths shall be as outlined in tables 1 and 2 for preservative treated softwood and hardwood respectively. No approval is required under the building regulation 2006 for retaining walls if. And the wall is no closer than 1 5m to a building structure e g. Retaining walls is a licence required.

Retaining walls in particular contribute significantly to the surroundings when constructed in timber. There is no surcharge loading. For hardwood posts which have a much smaller treatment zone backfill with no fines concrete. Timber is a preferred material for landscaping purposes.

The queensland development code recommends you construct retaining walls up to one metre requiring fill or excavation in accordance with an accepted industry standard publication depending on the materials used to construct it e g. And the height of wall or height of fill or excavation is not more than 1m. Tql 9 timber retaining walls for residential applications. Timber queensland technical data sheet 9 timber retaining walls revised march 2006 page 1.

A swimming pool or other retaining wall.