Out with the old

This 12 block unit at Double Bay had to remove all their driveways, paths and stairs to redo all the plumbing (sewer and stormwater) in the whole unit block.

More than 450 sqm of concrete with very little room to move.

Damaged Wall removal

This damaged wall was hanging on by a thread. There was a 6 car carpark on top of this wall that had to be removed and replaced.

Our Engineer came up with a new approved design and down it came.

Piers

To satisfy the engineers requirements we had to pier into solid rock before placing our steel cages and formwork in.

Pier diameter  & spacing was determined by the engineer and steel Rio inserted into each pier for additional strength.

Plumbing

The plumbing here looked like something from the antique roadshow. All the old pipes & systems had to be replaced prior to the steel and concrete going in.

To ensure we had no ongoing issues with blockages and camera access, we added a number of additional inspection points for future maintenance.

Pits

The old pits also had to go with the new pits installed to cater for all the additional stormwater.

Concrete pits were specified for a job this size.

Steel

Once the plumbing is installed, the prep work starts for all the concrete.
Blue metal base for drainage, plastic, steel and chairs installed ready for the pour.

Waterproofing

Just as important as the drainage and plumbing, the new walls had to be water proofed before the pour.
3 layers of waterproofing was painted on the back of the walls, new membrane with attached geocloth was pinned to the walls and aggregate, agg lines and more geocloth back filled the walls before pouring.

Concrete

Plumbing, pits, steel and drainage in and time for the concrete. More than 70 cubes to cover the job.

Old to new

A quick snapshot of our biggest concrete (and plumbing) job to date.