Log retaining wall

[Ramsey]

Hi,

I need to build a log retaining wall about 1.2 metres high. I want to use pressure treated circular posts as shown below:


Has anyone built this kind of retaining wall? And can someone give me some tips about how to go about it?

I plan to use a membrane and drainage pipes behind it. I will bed the posts in concrete.

What diameter do you think the posts will need to be for a 1.2 metre high retaining wall?

Thanks in advance for your help.

Ramsey

[Pablo]

What context is the wall to be used for. Sloping bank/planter etc. 1.2m is very high for this type of thing and the timber generally rots at the base within a few years (even treated stuff). Would take some heavy wood like telegraph poles buried quite deep to have any long term success. Bunch of ar*e and very twee type of walling if you ask me. Horizontally fixed sleepers can retain that height if done right.

[Stuarty]

Ive built a few, none of which i like to be totally honest. The only time we have had the poles vertical is when we built an amphitheatre, but the difference in levels was only 400mm. The rest of them, have had the poles laid horizontally with 100x100 posts every so often. These posts were approx 800 deep in the ground, with a decent amount of concrete round them.

[matt h]

BUILT MANY OF THESE IN A MILITARY SCENARIOI. DOESNT LAST THAT LONG IMHO, BUT EFFECTIVE AS TEMPORARY BARRIER BEFORE PUTTING IN PROPER PALLISADE WALL. ADVISE OLD TELEGRAPH POLES OR OTHER MINIMUM 8X8 OR 12 INCH DIAMETRE TIMBER. OK IN GARDEN BUT ELSEWHERE LIABLE TO PROBLEMS.