hi guys and welcome back to SITENG. in today's video i'm going to show you the construction of
the pile caps and this is going to be actually the first video from the pile caps as i want to
show you the bigger pile cap like a core cap as well in two days i'm going to show you the
typical pile cap what you need to have a look at when you constructed the pile caps and then we're
going to jump to the bigger one and i'll try to show you the construction of the slip form as well
and then how the slipform goes up then later so yeah let's go
so this is guys how we're to be starting the pile caps you see my lines here this is actual
line for the pile cap itself and i what i always do i mark the offset line as well i mark it on the
other side the two meter offset whatever offset you're gonna do it's about two meters let's say
at least so they're going you're going to lose that line because as we can see here we step it
so the dig itself going to be bigger than the this is actually crane base but all the pile caps it's
the same story you see the laser i set the laser that's the first thing we're going to be doing
and you're gonna see everything on my drawings uh video when i'm gonna be covering this as i said
before each video on site will be covered by the each video on the drawing series so yeah
that's it we exposing the piles now we're going to be cropping the piles i'm going to show you
later blinding everything and step by step so yeah let's go to the next part so that's the next step
when we have a dig already done we just have to crop the piles you see the cropper
using the digger for it cropper of course the size of the cropper depends on the size of the piles
and mr cropper they call it and then yeah that's how it looks you see the blue marks down there
that's the cutoff level the last actually getting ready to see the two lads there
and so that's the next step and uh next one blinding i'm gonna show you and of course
before we start the pile testing as well so we're going to blind this today just before blinding i'm
going to show you the old piles are cut now to the level this is the nice cut of level and i want to
show you one more thing i showed the loose bead yeah so all those beats like this they have to go
it happens when we when you break and sometimes lose bit but it has to go
and the structural concrete has to go around it so it's not the end of the world if it's broken
but the all those bits have to go as i said or another one here i think we're gonna get rid of it
yeah yeah and then the rebar has to be cut as well as this is actually higher than top of
the concrete and we got 40 times diameter for the rebar anchorage uh minimum so i'm gonna cut this
1500 above the cut off level i think the guy's already marked here you see so just a little bit
cut so it's not going to be clashing with the top steel and i think that's it in this part of works
so time for testing now we have a tester here i'll show you how it looks now
so that's guys how integrity test is looking so you're going to be doing that
all the time before you start working with a
pile caps and capping beam as well you saw that graph on that little tablet it's going to show
uh that base on that hitting with the hammer it shows the integrity of the pile it's going
to tell us if the piles is cracked somewhere of yeah there's some incontinuities in the concrete
so that's it that's the next one and then all of them has to be checked this way then integrity
pile report gonna be sent to us or to you in that case on your job and then you're good to go
with the works so the concrete here the next stage is the blinding and it's very important to have it
very accurate the more accurate the easier going to be later for us so what i did i actually set
my edm here and uh i'm checking the level i got here marked on the pile the perfect level
for the cut off so i know from here it's uh the blinding gonna be 75 mil lower so the projection
projection of the piles are 75 mil as as usual really so i just gonna set my laser somewhere here
at uh quite comfortable level for the lads so they don't have it you know the stuff too high they
can control it easily so blinding carries on i set the laser as you can see there on one of the piles
that's gonna be actually the next pile cap we obviously did that a little bit bigger
uh to allow workers to work around it when they're gonna be constructing the steel
uh for the crane base yeah so as you can see that's the blinding the guys got the level there
they spread in the concrete and then yeah i'm gonna be keeping an eye on them so this
is this is very good and then with the pile caps just probably with the smaller pile caps
i think the lads gonna be using here the prefab cages in terms of still fixing so the the
the ready-made cage is going to be coming you're going to be dropping them in the position and
probably marking the columns on top of them later after the backfill but that's all very similar so
i'll try to show you that one as well but this is the perfect example for the for the pile
cap so after our blinding is ready we in this case and in some caps you're going to need the
cell core on this job i typically never put the uh cell core at the core deck underneath
the cups i would we we're using this underneath the slab and i believe that cord are gonna be
underneath all the basement slab here which is the heat protection i'm going to tell you a
little bit more maybe in the drawing video why you need it and what you need it for
and this obviously the depth of this is going to determine the level of digging and everything so
you need to be very careful and check these things as well as they might be shown on another drawing so
after the blinding is done and the heave protection board is on which i showed you uh there is a time
to steel fixer so that's the steel here came for the for this pile cap you see some shearlinks
some uh big l bars and then the main bar i main bar is behind me here they're all 32 millibars but
that's how they come so you're gonna have a tag here this is 32 it's 32 mil bar you got the bar
mark here it's barmark number four and that's it really so that's how it comes and it depends
i'll try to show you how i do the colors myself as there's more complicated drawings and more stuff
i'll try to use different tag colors like red for the bottom and blue for the top for instance and
then depending how much and how complicated is the rebar drawing i'll try to make it easier for
fixers as this really can make your life much easier i think that's it you see the links here
for the column here are the starter bars the long ones as the pile cap is 17 50 millimeters
so they have to be around one meter above it above the concrete and uh yeah i'm going to show
you how the fixtures the fixing the steel and then one going to be ready when we pour in it
guys are laying the cordek now this is a second crane base i'm going to set now
the drainage i put already what the legs going to be so the guy's going to cut
in the cordek for me and then what i'm going to do now i just set i check on the card drawing
how the line of the yeah put myself here 1470 and one four five five on the other side so i'm going
to be doing that just the offset from this line i got this line in the edm so i need offset one
470 to the line and i'm going to mark myself level as well level on the blinding and we're going to
measure of the blinding later to the bottom of the pipe that's going to be our input level and then
yeah i just show you this one going to be installed so let's go to the next step yeah so
same story the other side from that line offset that's you can find actually on my setting up
drawing with the reference line in case and then we're gonna looking for one four five five here
yeah one four five five that's what i got now i'm just going to mark it there i check later the
reflectorless the level here of the blinding and then i just gonna measure with the tape from that
level to the invert level of the pipe what i'm gonna need i'll show you that later anyway so guys
when you do the pile caps you need to like you're going to see on the construction
drawing series we we're going to go through all the drawing services drainage pile cap
schedule probably to just double check the cutoff levels everything you're going to see that step by
step but what I'm doing now I'm just marking the this i don't know if you can see the laser there
actually you can see this yeah I marked it on the bar that's going to be invert level of our pipe I
actually used a blinding before but just i got my edm set so i just want to make sure this is
just perfect and then yeah that's it you're going to see the pipe later i'm just doing
like a pre-pour inspection just just last check before we pour and that's how the file caps are
constructed really and uh if it's crane based i'm actually showing this as a pile cap that that's
that's how you're going to be doing the pile caps unless using the the the prefab cages but uh
crane anchor how we setting crane anchor you gonna se on the crane base video I'm just i
I'll I'll just do that as a separate video setting the crane base for the crane tower so you can see
the pipe in uh the first scene is a three meters pipe time saver one I'm gonna tell you about maybe
types of pipes more in the drawing uh video covering this uh bit the pile caps but yeah the
pipe is in you got my invert level here the line for the guys the other side as well the same story
uh oh yeah and this pile cup I'm gonna have a two columns as well so obviously all the pile caps
there will be some columns unless you're gonna be core caps that you're gonna have the walls
uh it depends on the cubs here the core caps is interesting i'm gonna show you i'm probably
gonna find some videos on from my last job we're preparing the crane base for the back filling now
we have to actually backfill it slowly and then carefully from each side slowly and slowly not
to move anything and obviously after we're gonna do that i'm gonna double check the crane anchor
position i'm gonna double check the pipe as well and after the back filling i'm gonna mark two
columns as on this pile cap here they're gonna be two columns coming anchor in their top steel
there is only top one to come on top of it we got the lightning protection here connected
this is a tape now it uh it's going in two legs that's what design wanted so we got
one here one on the opposite it's not opposite yeah opposite corner and then yeah after backfill
i'm gonna mark the columns I'm gonna double check everything and then uh I'm gonna show you the pour
so guys this is uh the last check actually I'm doing before pour, we're pouring tomorrow
i also do a survey of the pipe which i'm going to show you it's installed
now i showed you that before but i just shoot the top of the pipe
i changed the height target that for uh it's 105 mil so i'm gonna have
the invert level recorded straight in and don't have to take anything off
yeah so that's it really you guys got two columns to be installed there and wait for the pour
oh