Completing landscapes on sloped terrain can be challenging, since it causes soil erosion and shifting of the ground. Landscaping timbers can be used to form retaining walls, containing the soil and giving your landscaping project a neat and polished appearance. Be sure to check with your local building authority if a permit is needed before you start the work. It is always better to get the red tape out of the way first. There is nothing worse than having to pull the wall down later because you didn’t cross all the ts and dot all the ‘i’s with the relevant authorities from the start.
Begin construction of your wall by driving wooden stakes to mark the corners and tying string between the stakes to mark the top and bottom borders.
2 Dig A Trench
You will need to dig a trench around the wall that is 2 inches deeper than that of the landscaping timbers. A trench about 6 inches wide or large enough to allow the timbers should be dug.
Evenly cover the bottom of the trench with 1 inch of sand or gravel.
4 Cut Timbers To Fit
Make sure that the first row of timbers are set end to end, and that the length is just right for the trench. Use the chainsaw to cut the pieces so they fit tightly into the trench.
5 Cut Second Row Of Timbers
Lay the second row of timbers on the first row. Stagger the seams above the first row of timbers when laying the second row. Every subsequent row should be pitched into the slope by 1/4 inch from the row below it. Between the first and second rows, drive galvanized spikes to secure the wall. It’s easier to work with the wood if it’s predrilled.
6 Deadman And Header Pieces
For the dead men and header pieces, dig perpendicular ditches into the sloped hillside. By jutting into the hillside, these short pieces of wood will help to solidify the wall further. Each 6 to 8 foot section of the wall should have a deadman piece.
Install the deadman and header pieces in the prepared perpendicular ditches and level them.
7 Rinse And Repeat
Repeat the steps 4 to 6 to continue building up the wall.
Use sand or gravel to backfill to the second row.
9 Backfill With Soil
Backfill the trench so as to cover the entire top area with soil, taking care to tamp as you go.
10. You’re done. Maybe time for a beer??
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