one way to make a retaining wall fall over is by using a digger it'll knock it over every single
that's part about and what makes the retaining wall fall down well there's a few things that
can make a retaining wall fall down and we're going to see how this one was built to see if
we can point a few this things out thanks for the coffee where how's the [ __ ] going hey
guys we've pulled out a post now and let's have a look at it so that's the bottom of the post
where contact at the ground and this is one of the sides you can see that there's very little
concrete around here and no concrete here because the strength of the wall is lateral
when you pour concrete for a retaining wall you really need to get a lot of it underneath your
timber posts to prevent that post from sinking so that could be one of the key things on this wall
hello will continue with discussion about retaining walls but while they knock the
old one out its starter and prompt you segment that I'm gonna call Scott's got mail I can't lie
I was very excited when I saw this come in the mail finishing carpentry TV I was not expecting
this even put my little picture on there gonna see what's in this finishing carpentry TV box
bar your legend I'm a big fan of the channel that's surprise hello YouTube awesome thank you
so we think we know why this wall failed ultimately this is a big block of concrete
and it was around the parts the post is still in there it's 950 long and that was the fire end of
the retaining wall now it is a big one but it's not big enough the wall from the ground level
up was 1.5 but this was only in the ground 900 you kind of want to go in the ground as much as
you going out the ground when it gets to 1.5 you kind of want to be even more so that was part of
the problem wasn't deep enough the other part was in some cases the concrete didn't surround
the posts enough there was no concrete beneath the posts all that pressure goes on the post and
then it kind of slips through the concrete if there's nothing underneath or the bottom of the
post rots out because exposed to the dirt so you got all these things that all these factors and
this one retaining wall that caused it to fail another factor was the drainage there's some
drainage right there a little bit of drainage we pulled it all up and there was stranded in
here scoria it's porous and it's also randomly shaped so when you put a bunch of it together it
creates gaps in between that the water can then run through from the temple wall that's going to
go here back to the dirt you need like a whole area of scoria there that the water can go down
in this case there was only scoria up to say this height and then it was also above there so that
soil just fills up with water and just creates a pressure on that timber wall so combine that
with the issues that we have with the post and the holes you you get a crooked retaining wall
this weeks it doesn't work just about letting gravity do the work Scott yeah
we have to keep digging the other pose that's the last post to dig out and it's probably the biggest
post so we got to spend a bit of time getting rid of that before we can drill our own holes so this
is the joy of removing and redoing a retaining wall rather than just putting a new one in you
have these perfectors these things let's slow you down a bit but that's kind of the way it is
well one retaining wall one lawn that's gonna be all cleaned up it's not gonna
look like that when we're all finished with a bit of extra drainage and deeper
holes and a bit of concrete under the post this wall should last a bit longer no it
this wall should last a lot longer chainsaw a battery powered chainsaw