This was an emergency job for HAL as concern for section of the roof work pipework collapsing. The scaffold was built in 1.5 days with the taxi route being closed off. Also being pushed by APOC to get the road reopen. The scaffold had a support either side of the roadway. Then beams where spanned across the roadway. The scaffold was double boarded with a polythene membrane. A system staircase was erected to enable access for HAL. Heathrow T4