Prior to commencing works the structures were inspected by the site supervisor for any hazardous waste such as sharps, needles, gas containers or chemicals. Loose contents from within the structure, including furniture, appliances, loose waste etc. were removed by hand in a controlled manner and arising’s managed in accordance with the Site Waste Management Plan. Door frames and skirting boards were removed by using bar and sledgehammers.
The structure floors were cleared of general waste and debris prior to demolition. This was removed from the building via the windows and doors that lead directly to each designated drop zone. Once complete, the demolition phase could start.
All fencing carried signage warning of the dangers that would affect others entering the demolition zone during structural mechanical demolition.
Dust suppression equipment was set up next to the demolition excavator. A water supply from a fire hydrant was used to supply the tank via a licensed standpipe, this water pump supplied a jet of water to the building being deconstructed.
The demolition supervisor monitored the usage of water to ensure a minimum amount was used to reduce the environmental impact of excessive use and water runoff. All entrances to each building were securely fenced off to ensure no entry could be made into each building. A toolbox talk was conducted prior to demolition of each building to keep all operatives fully informed of what was going on.
A 360-demolition excavator with demolition attachment was positioned at the rear of each structure, all voids in the ground such as manholes and sewers will have been protected.
Using a hydraulic grab attachment, the roofs were removed back to the first supporting column allowing one bay of the roof to be lowered carefully to the ground floor slab. Any wood and timber were then be removed and lowered to ground level away from the building – this was processed and loaded into the designated 40-yard waste bins. Once the roof had been removed, the internal walls and floors were removed and lowered to ground level.
The external walls of each of the buildings were left until all internal walls had been removed to help contain any dust generated. This process of deconstruction was repeated until all the buildings had been removed.