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200 x 50mm 2 4m durable mixed hardwood sleepers.
Timber sleeper retaining wall specifications. Post are fully set in. Height 600 to 900mm 2 3ft high six high of the 150mm 6. Building a retaining wall. In general try to choose posts less than 150 mm dia as they have holes 300 mm x 1 6 m deep 1 5 m embedment and 0 1 m for post drainage.
Height 300 to 600mm 1 2ft high four high of the 150mm 6 treated pine sleeper. Timber retaining walls up to one metre high can be constructed as shown in figure 1. For retaining walls footing should be at least 150mm deep and 450mm wide. When building a retaining wall sleepers must be supported at both ends and at 1200mm intervals maximum and posts should be placed in front of sleepers for the results.
Invariably the retaining wall forms part of a landscape where plants are encouraged to soften the harder elements of construction. In addition proprietary timber crib wall systems are also available. To ensure that the wall will fulfil its intended purpose safely retaining wall specifications should be adhered to. 200 x 75mm 2 4m mixed hardwood sleepers.
Typical elements include how deep the footing needs to be. 10 batter as shown. 200 x 75mm 2 4m mixed hardwood sleepers. Generally if you are building a wall higher than 600mm 2ft then you will need drains and if you are working with sleepers 150mm 6 x 75mm 3 then the total thickness to allow for the base will be 100mm 4 for the drain plus 75mm 3 thick for the rails horizontal timber and then the posts which are usually thicker than the rails so i would use either 150mm 6 x 100mm 4 thick or 200mm 8 x 100mm 4 thick depending on the height.
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. Member sizes and post embedment depths shall be as outlined in tables 1 and 2 for preservative treated softwood and hardwood respectively. For posts above this size use 450 mm dia holes. These retaining walls have been used for a long time in australia.
W w w 200 x 50mm 2 4m durable mixed hardwood sleepers. This means that any factors that affect the building of the wall and its functionality must be contemplated. Post holes should have 100mm of coarse gravel to manage drainage. Walls exceeding 400 mm high should have a 1.
Post are fully set in. The minimum stress grade for sawn timber shall be f7 for softwood and f14 for hardwood.
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The minimum stress grade for sawn timber shall be f7 for softwood and f14 for hardwood. Post are fully set in. Walls exceeding 400 mm high should have a 1.
