18 retaining wall how deep should 4x4 posts be

4 in. x 4 in. x 16 ft. #2 pressure-treated timber-4250254 - the

these timbers are pressure treated in order to protect it from termites fungal decay and rot. treated for ground contact they are ideal for a variety of applications including retaining walls deck play sets landscaping stair support posts and walkways. these timbers can be painted or stained. when used properly timbers 【Get Price】

how to build a wood retaining wall doityourself.com

once the posts are cut then lay them aside and dig the holes you need on each side of the retaining wall area. they should be 18 inches deep. set the posts inside each hole and then pour quick dry concrete into the hole to hold the posts straight. use 2x4 braces to keep the 4x4's completely straight. level out the concrete 【Get Price】

how to build a retaining wall - lumber talk.com

dec 19 2007 attach each layer of timbers to the layer below it with spikes (8 inch long 60d nails). timber retaining walls are built straight up – not slanted like stone walls – so keep your timbers plumb as you stack them. timber tie-backs if your wall will be higher than about 18 inches use tie-back timbers every eight or 【Get Price】

how to build a timber retaining wall - landscaping lawns & ponds

jul 7 2011 behind the top tier of the wall add 6 inches of topsoil and lightly compact it. tiebacks. all retaining walls should lean into the hill 1 inch for every 12 inches of height. timber walls 4 feet or higher should be tied to the hillside with "dead men" anchors (6-foot-long t-shaped tiebacks buried in the hillside) 【Get Price】

retaining walls and backfill - family garden trains

to hold the backfill in place most garden railroaders use some kind of retaining walls generally made of wood stone or preformed concrete blocks. if the dirt is on top of gravel it should be at least a foot deep to support most groundcovers suitable for garden railroads or two foot deep to support dwarf conifers as well.【Get Price】

build a retaining wall - extreme how to

jan 2 2008 setting posts using temporary bridging. with your level string-line in place you can now measure down to the edge of the hole. let's say its 4-feet from the level string line to the hole. add 3-feet for the hole depth and you know you need a 7-foot tall post. cut the post to length. plan for the end you cut to go 【Get Price】

how to build a strong retaining wall with 4x4 treated post - wikihow

the instructions for building a retaining wall out of 4x4 treated post aim to help ambitious homeowners and do-it-yourselfers tackle this task. if you appreciate the dig a level trench a foot deep into stable soil. make the trench check each post level horizontally and plumb vertically as subsequent courses will be affected.【Get Price】

how to build a treated wood retaining wall family handyman

the headers footers braces and shelves anchor the stanchions deep into the side of the hill to keep the wall from tipping out or sliding away from the slope. a special steel strap (photo 2) ties the 45-degree brace to the top of the posts to keep everything straight up and down. your walls can be as long as you want but limit 【Get Price】

wood retaining wall help - building & construction - diy chatroom

i planned to have it flat behind the wall. the total slope is about 10 feet deep and 62 inches high. this wall is already 30 inches high. do you think i can attach a 4x4 or something behind the wall between the posts and anchor it back with a deadman to be able to go a little higher than the 18" you suggest.【Get Price】

how to build a wood retaining wall: 10 steps (with pictures)

building a wood retaining wall can keep your topsoil from washing away down a slope and it can be turned into a terraced garden for planting anything from dig 18 inch (45.7 centimeter) holes for your posts on each side of the area where your retaining wall will be. on long boards a snapped chalk line works best.【Get Price】