Liberty Industrial was appointed by Urban Growth NSW to carry out the demolition of redundant warehouses and gym facilities on the corner of Bourke Road and O’Riordan Street, in Alexandria NSW.
Prior to the demolition works being undertaken all redundant services including electricity, telecom and water were disconnected by licensed technicians. Tiger tails were installed on the low voltage and communications lines adjacent to the eastern boundary walls on O’Riordan Street.
Liberty Industrial carried out the removal of bonded asbestos from the office sheds inside the warehouses. Air monitoring was undertaken throughout removal works.
The eastern boundary wall was in an unstable condition due to years of deterioration, hence preventing the usual approach of demolishing the building first then the freestanding facade wall. An alternative method was developed involving propping and bracing of the inner columns and trusses of the warehouses so that the boundary wall could be demolished first, without compromising the stability of the warehouses. This methodology was developed with and approved by an independent Structural Engineer and provided to the Principal Certifying Authority for approval.
Once approval was obtained, the demolition of the facade wall was then undertaken during two consecutive nights. The works included hand separation of the facade wall from the warehouses roof structures, working from Elevated Work Platforms. Demolition of the gable walls down to lintel height was carried out by hand, working from Elevated Work Platforms and demolition of the lower part of the boundary wall was undertaken with an excavator, working from within the site footprint, systematically and methodically pulling the remnant of the facades walls to the ground.
During these works, the footpath and traffic lane adjacent to the facade wall were closed and traffic control in place. Proper approvals from Roads and Maritime Services and City of Sydney had been obtained prior to these works commencing.
During the following day shifts, the rest of the remaining structures were demolished bay by bay using an excavator fitted with grabs attachments.
After loading out of the demolition materials following appropriate waste streams, new fencing was installed to replace the brick boundary walls and clearly delineate public from private land.