It is far too long since I ave been here. Whether taking time is a right on a holiday, or whether this is just a displacement activity is something I am not sure about. Anyway:
A year or so ago I got involved with my friend David Narro and his colleague Ben Adam on some alterations to the main floor of the NMS. The floor is supported by a very elegant set of vaults which have been obscured in a store until now. A new entrance is being constructed by piercing the basement wall 
and removing the supporting walls from the vaults. The original plan was to core needles into the vaults and lift from there but we eventually determined that it was possible and desireable to avoid such damage to the remaining structure. Inclined props were used to lift the vaults near the springings and the walls could then be removed and replaced with a steel frame without damaging the vault.
. The pictures are a bit blurry but show the scheme quite well. I will look out my pics of the original structure shortly.
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