Case Study // Seacoal House – UKPN

Erith was employed by the UK Power Networks to demolish the seven storey office building which occupied the site in Limeburner Lane in the City of London. The site presented several major
challenges in that the two levels of basement on the site, which were retained by UKPN, house the sub-station that supplies power to a large area of the City of London and therefore required
protection from the demolition process and the weather. Erith’s proposal to install a waterproof membrane to the ground floor and protect it with a concrete topping prior to demolition and to
install a steel bafe above ground level to protect the remaining structure was instrumental in being awarded the contract by UKPN.
The neighbouring properties were of mixed use including both residential and commercial surrounding. The site is located 75m from the Old Bailey and sits within an important conservation
area within London. Most of the nearby offices are occupied by large legal practices, a television studio occupies the 4th floor of 10 Fleet Place opposite the site and the Thameslink Tunnel lies
immediately below the road slab in Limeburner Lane.

Erith managers collaborated with the local businesses and the City of London Environment Department, to explain the demolition process and listen to their concerns and comments. As a
result, Erith’s temporary works engineers designed a propping system to enable the use of larger 13 tonne machines fitted with hydraulic munchers which greatly reduced the noise impact
on the neighbours’ businesses. Erith also kept the neighbours aware of progress and forthcoming works on site with monthly newsletters. The building was demolished without incident and the
works completed six weeks ahead of programme.

Project Goals

  • 18,700 working man hours without a loss time accident or incident

“Erith won the project principally on their method of demolition to be undertaken and by convincing UKPN that they were able to carry out these works whilst maintaining a waterproof barrier on the ground floor and pedestrian access for UKPN Staff, which would enable the live substation in the basement to work uninterrupted throughout the whole demolition process.
Not only were these works carried out in the prescribed manner, but the project was handed over without any safety issues, some 6 weeks early.

It was noted that the positive attitude of your staff, their concern for the well-being of UKPN Operatives entering site, and care for our neighbours, who included The Old Bailey, numerous high ranking legal firms, and Television Studio immediately opposite the site, led to Erith winning the City Of london Gold Award for their Considerate Contractors Scheme for this project. It has been a pleasure to work with your team; they made the challenges of a difficult and complex UKPN Development as uncomplicated as I would wish at all times providing full visibility and reporting for both the practical operations of the works undertaken and for my financial forecasts.”

Paul Rogers – UKPN Senior Project Manager