DDS Demolition undertook the demolition of 2no 6 storey tower blocks of steel frame construction down to the underside of their reinforced concrete slab foundations.
The demolition works included a number of low level structures that extended around the site. The scope included extensive strip out works, asbestos removals, construction of walls and weatherproofing to retained buildings at the separation joint, break out of ground slabs and redundant drainage and the removal of materials from site.
Thames Valley University remained live during the works, requiring careful and considerate perimeter controls, security and methods of work adopted that favoured reduced noise and vibration. Additionally, the buildings were adjacent to a live railway necessitating additional approvals and control measures to be put in place.
The demolished buildings adjoined retained university buildings, therefore separation joints were formed using hand tools with the retained structures weatherproofed with blockwork walls to seal off the openings. The retained structures were protected with scaffolding crash decks and airflow sheeting.
Asbestos removals included notifiable and non notifiable removals. In particular, the steel frames had been coated in fireproofing material containing asbestos requiring a strategic approach to contain contamination. Additionally a number of evasive species were identified on site including Japanese Knotweed, Buddleia and Flat leaf bamboo, all of which were contained and encapsulated.