The scope of works included:
Standing at 105m with a 11m diameter and a total of 750t, the felling of the steel stack required a specialised steel bracing system working along a fulcrum line to allow for even weight distribution and to reduce pulling capacity. Our felling technique was completed successfully and well within our proposed vibration controls, which were critical in protecting the adjacent live gas plant facility and assets.
The unbalanced weight distribution of the 40m high ductwork structure led to a split design methodology, involving two (front and back) sections; the front was felled & sheared, whilst an innovative skidding technique was used for the back.
The back section included two 85t sections that required two 87t excavators to skid the structure away from the adjacent gas plant so it could be safely felled and processed.