let's go around here and today's exciting episode everybody we finished the retaining wall this is
part three of building a retaining wall yeah cold it's definitely cold and the rains been
kicking in lately so we're trying to backfill this retaining wall before it all turns the first step
drainage drainage and the most simplest sense think about like this you basically want the
water to filter down and get to the lowest point of the wall and escape that's the simplest way to
put it but there's a number of things you have to do in order to achieve that it's hard to see
with all the dirt and everything everywhere but we've scraped down to the clay and created this
channel here that's gonna be the lowest point there the drain system you can kind of see that
it's already working so it's looking good it's kind of plan the water's going where it should
polythene the only purpose of this in this situation it makes it so there's
no resistance on the wall it just hits this polar thing and goes all the way down
alright that's one more with polythene on it now you might be thinking we might not I don't
know the drainage material is quite you know the drainage material is quite rough and this stuff is
easily rip we need to protect it from the scoria pardo he was here to protect the high Potter when
the score he goes against that shouldn't rip and now it's raining this here isn't really
waterproofing it's more water diversion it's just a way of giving the water a path of least
resistance so rather than soaking into the timber and weighing the wall down the water will hit this
and go right down to the drain and get out of here that's the idea so it might be a little
bit overkill for a timber retaining wall like this but um whatever helps the drainage the force from
the water is what can cause the most damage on retaining walls I'm I'm filthy but the wall is
looking very tidy all the foam in there all the DPM and the polythene whatever you call it now
the next step on the drainage journey is to get rid of this stuff here this here is a geotextile
fabric where our geotextile fabric does is it filters the water so rather than just all the
mud and water going straight into your drainage the water goes through the geotextile fabric and
the mud stays on the other side of the fabric a few moments later geotextile fabric a little bit
of scorer on top rad so I asked every plumber and every punters friend what to do with these pipes
and they all recommended the drainage coil here as usual but at these joints we're using PVC pipe
and you can actually get drainage clew connectors but they charge like three or four times the PVC
pipe so it's not necessary so we've got all the PVC pipe and we're using PVC tape to join them
pretty much ready to backfill now the digger drivers here it's waiting for the digger to
turn out and I'm just doing the last-minute last-minute things like this it's just a
ventilation for a sewer pipe that runs down there it doesn't smell great just make sure
things and rips in before we start filling exciting all that's work for this moment
I did it the best I could while I was
thank you Andrew appreciate it boy good worker we did a pilot well Beckford for the leveling
out to do but I'm pretty happy with that it's nice and straight I've got a bit of
leftover stuff here for the trench to take the wooden right out but there we go oh my
god thanks for watching this exciting episode and see you guys in the next one all right
you