[Music]
no construction site is complete without
its fair share of tower cranes and here
at media city we're no exception
it seems that they appear from nowhere
almost overnight and before you know it
they're in full swing but it's not quite
that easy at this film will show the
team of media city are about to erect TC
10 a saddle jib tower train and we're
going to follow its progress through to
completion first the project manager
with the assistance of the health and
safety support team have to consider a
few things
what type of crane where is it to be
situated how high what length does the
jib need to be what sort of base how's
it going to be built and finally how do
we dismantle the thing something else
that is really important the paperwork
apart from the usual method statements
and permits there are various stages
throughout the crane erection where
checks need to be undertaken
certificates issued and signatures
required so we know where the cranes
going and we know the type of crane we
need but first we need to expose the
piles around which the concrete crane
base will be set the designs are
produced and approved by highly skilled
engineers and enormous care is taken to
make sure that the base is of the
highest standard at last we can start
digging well almost a permit to excavate
must be raised and method statements
produced and discussed with the
excavation team
the site is clear and an exclusion zone
created and although underground utility
checks were carried out previously the
area is scanned with a cat detector
prior to excavation
the important safety word should always
be foremost so guardrails and safe
access routes are put in place piles
down to the correct height blinding
concrete is fought to give us a clean
surface where we can build our steel
cage
these concrete footings are where the
cream-based section will sit
the cage needs to be checked and signed
off
and then preformed walls complete the
structure the base is back filled
and compact it
the first section of the crane which has
been positioned nearby is lifted onto
the footings
the crane base section anchors are tied
into the cage this is pretty critical at
the guys that will erect a must have to
be confident that the base is solid and
safe our temporary works coordinator and
the crane supervisor make the final
checks before the complete is for
give samples percent of the laughs where
tests will be carried out on the
concrete and reports sent to the
temporary works engineer so he knows
when it's safe to proceed to the next
stage
all people weren't completed base
construction thoroughly checked the
project is handed on to the erection
contractor in this case HTC the base has
hardened off and the mast can now be
built after the lifting operations
manager completes his pre erection audit
rated the permit to erect and checks
that the foundation approval certificate
has been issued by the temporary works
engineer the erection team must not
continue without the certificate of
approval we have to extend the original
exclusion zone now that the crane is to
be erected the zone has to take into
account the eventual height of the mast
and the length of the jail this is all
laid out in the method statements we've
allocated an area for the mobile crane
tested the ground and checked insurance
documents this crane is pretty high it's
not going to be freestanding we're going
to tie it into the core for stability
the ties will be fitted to steel
brackets which will have to be fixed
into the core at the required height
would inform us the bunk the location of
the brackets are removed the steel
brackets will have to be checked and
approved by the temporary works engineer
the crane sections are delivered and
inspected by the erection crew careful
attention is paid to the pins and
retaining clips mobile cranes like all
other types of cranes operate under
strict guidelines if the wind is too
strong work starts
as each section is lifted the slinger
banks Minh and operatives on the mast
guide it into place
locate the feet hammer home the pins and
check and confirm that the securing
devices are fixed and in flames the
erection team or though they may have a
head for Heights make sure that
harnesses and safety equipment is one at
all times
now the mast has reached the height
where it is going to be tied into the
core we fixed the yellow tie collar to
the section when it was on the ground
and now we can lift it into its position
on the mast tie legs are assembled to
their approximate length and prepared
for lifting the tour the ties can be
fitted the brackets on the core have
been inspected and approved by the
temporary works engineer
our site engineer checks the tower is
vertical and relates his findings to the
crew so they can make adjustments to the
ties before fully tightening the bolts
now that the tower is tied into the core
we can finish building the mast up to
its final height the a-frame and slue
ring are lifted into place are secured
with high tensile pins and retaining
clips followed by the cab the counter
jib is next being raised off the ground
and changed for balance before being
lifted to the top of the mast a tag line
controls the jib on the way out until
it's placed into its catchment hooks and
secures and the bracing bars attached
the main Jade is assembled in the
exclusion zone trolley ropes and safety
rails are fitted and like the counter
jib it's raised off the ground and
checks for balance the tower crane is
slewed round ready to fit the main gym
which is lifted and secured bracing bars
are connected to the top of the a frame
then the jib lowered to its final
horizontal position all retaining bolts
pins and tie bar connections are
carefully checked
counterweights are lifted into place the
hook block and rope are made ready then
hoist it up to the jib where the fitter
will complete the process and set limits
ready for weight tests before testing
the supervisor will carry out an
inspection including all connections
ballast ropes and Anchorage points the
cranes Bill's a bit more paperwork needs
to be produced the erectors inspection
and handover certificates are issued and
the lifting operations manager completes
his post direction audit before we can
Commission the crane into use there is a
little more work to do
an overload test is carried out so the
crane can be certified
an independent engineer completes a
report of thorough examination and the
management audit is finalized routine
checks will be carried out until the
crane has finished its work and is
finally decommissioned so there we are
a great deal of work and preparation
goes into the erection of the tower
train they don't just appear by magic
and although exclusion zones may seem to
be a real nuisance they are there for a
reason
not to make everyone's life difficult
but to keep everyone safe and out of
harm's way
TC 10 is now fully operating as one of
many tower cranes on the media city site
you