Stacked
- This is a very popular method of timber wall construction. Ideal for creating varying levels in your landscape or for correcting drainage problems. Stairs and planters can be integrated to turn a functional structure into an appealing feature. (See 19c)
- Materials most commonly used are 4x6 or 6x6 timbers. Railway ties can also be used for a rougher look and 4x4 posts for a light-duty decorative wall.
- Our detail illustrates the inherent strength in the system of "T" tiebacks. The wall is held in place by the very soil it is retaining. A properly built wall will last a lifetime.
- If your ground is very rocky this may be the most cost effective retaining wall as it does not require excavation for post holes.
Post & Plank
- This functional wall is relatively economical and allows for some design flexibility. Post spacing can vary from 4 ft to 6 ft apart and post size commonly ranges from 4"x4" to 6"x6".
- Planking may vary in dimension according to retaining capacity required and the desired appearance of the finished wall.
- The strength of this wall comes from the posts being anchored into the ground with concrete. For extra strength we often install some timber-"T" style- tiebacks.
- All retaining walls are backfilled to allow for proper drainage.
- Pressure treated lumber is used to ensure against decay.
Planning a Future Fence?
Save money by planning ahead.
Stacked Walls - Keep tiebacks clear of future post locations for a depth behind the wall of at least 3 feet. This will allow posts to be dug in at a future date.
Post and Planked Walls - If posts are set vertically, extend every second support post above the top row of planking to allow for a future fence. Position retaining wall posts at 4 ft centres to take advantage of standard fence lumber sizes. Extending posts will neatly integrate the wall and fence.
