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RESOLVED:
1.   
Recommended to Council that a budget of £1.1
million is created for the Royal & Derngate roof
works.
2.   
Authorised procurement of the works.
 
REASONS RESOLVED:
1.   
The Council is liable for the maintenance of the
roof under the lease, and accordingly it is liable to carry out
works to ensure the safety of the roof.
2.   
The recommended course of action (the support
system) is the most cost-effective and causes the least disruption
to the theatre and therefore to the financial position of NTT. It
is also in line with the Council’s Construction &
Maintenance Climate Strategy by supporting what is present and
thereby minimising the use of new materials.
 
ALTERNATIVE OPTIONS:
·        
Option 1: The full removal of
the RAAC and a new roof system installed. This would
entail:

Ø 
Works period of around 46 weeks

Ø 
Cost circa £2.3 million.

Ø 
Putting extreme pressure on the NTT’s revenue
position due to the time that the building would be
closed.
·        
Possible additional closure of spaces within the
theatre.
·        
Would provide a 25-30 year warranty and should last
for at least 60 years in practice.
 
·        
Option 2: Installation of a
steel and timber support matrix fitted beneath each individual RAAC
panel, supported by the existing structure, which has sufficient
strength to do so. This would entail:

Ø 
Works period of around 20 weeks.

Ø 
Cost within £1.1 million.

Ø 
Would reduce the scale of the Royal & Derngate
revenue income loss.

Ø 
Phased works allow for the maximum space to be
open.

Ø 
The roof would then need to be checked annually, but
the scheme should extend the life of the RAAC roof planks by at
least 30 years.

Ø 
Structural engineer design warranty is a standard
and approved methodology.

Ø 
Lower carbon impact through less use of new
materials.