Replace Wooden Retaining Wall


Old 09-03-05, 11:12 AM
Visiting Guest
Posts: n/a
Replace Wooden Retaining Wall

The wooden retaining wall (20ft wide x 4ft high) in my front yard is starting to show its age. I'm planning to replace it with the easy to install retaining wall block system. The most difficult part of the project, I think, is dismantling the old wooden wall. Question - Would it be ok if I leave the old wooden wall, as is, and install the retaining wall blocks in front of it and fill the gaps between the old and the new wall with aggregate and soil?

Sponsored Links
Old 09-04-05, 02:38 AM
WeldGod's Avatar
Join Date: Mar 2003
Location: Texas
Posts: 616
Yes, you should be fine doing it that way. But make sure the soil used to fill in between walls is packed in all the way and fully filled in. If there is any gap between walls and the back wall fails it could lead to unsafe loading of the new wall.
Old 09-04-05, 01:31 PM
Join Date: Mar 2005
Location: USA
Posts: 6,128
Wooden Retaining Wall

Do not use ordinary soil for filling between the walls.

Follow the instructions for the retaining wall block and fill with gravel or a granular backfill. Compacted soil containing clay is a guarantee for failure. Most problems with retaining walls have little to do with the wall itself. The backfill containing moisture is the cause of failures and short lives.

Old 04-15-09, 01:41 PM
Join Date: Apr 2009
Location: Ohio
Posts: 1
Replace wood retaining wall

What about attaching the new wall to the old wood wall with the perforated polyethylene cloth? I would think tying the two walls together has merit.
Old 04-18-09, 03:45 PM
Join Date: May 2002
Location: Maryland zone 7
Posts: 1,716
If the old wall is wood it will continue to deteriorate and decompose. Leaving it there will eventually lead to sunken areas. Remove the old wood.

Old 04-20-09, 06:16 AM
Join Date: Feb 2009
Location: Arkansas
Posts: 10
Don't forget about dranage and geo-grid.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes