Email 15th January 2014. from the Planning Manager.

The variation in the angle of the pillars is not considered to be material.
That the dismissal of the slope or angle of pillars as immaterial is questionable considering the extra width gained at the height of the travelling crane. The extra width at this height because the pillars are now vertical is 3 meters and the extra meter gained in 2001 at the footings gives an overall increase of 4 meters. Any observer would say that the shelter in no longer just a cover but is now a housing for a travelling crane.