RFI - Peer Review Response by Sprout · 51901.3614.01

Central Courtyard
8. NR would prefer that only fire stair 01 be extended to the roof terrace level. (However, understands that doing
   so may not satisfy the building certifier’s travel distance requirements – and therefore understands if fire stair
   02 needs to be extended)

9. NR would then question whether both stair 01 and stair 02 need to be extended, or whether, more preferably,
   the extension of just one staircase will achieve the necessary compliance.

The vertical extension of the central stair 01 and the eastern stair 02 provide the required alternative escape paths
from the roof top terraces in accordance with the National Construction Code D1.4 and D1.5. Stair 02 is required
within 6 metres of the eastern private roof terrace gates. The centrally located Stair 01 is required as the travel
distance between stair 02 and the existing stair 03 is greater than 45 metres.


10. NR would recommend that the bulk of the new roof planes over the extended staircase/s be minimised.

Images 8 & 9 below indicate the revised stair 01 and 02 roof detailing. The roof area has been substantially
reduced with its perimeter overhang slightly projecting beyond the extremity of the stair. The profile of the roof is
simplified as two roof planes with a central ridge. The steeper roof angle over the stair reduces the overall scale
and height; it also replicates the profile of the ground level commercial roof. The visual appearance of the roof
when viewed from Hastings Street has been minimized, the horizontal fascia is the prominent roof element; the roof
plane aligns with the perspective view.

The openness of the aluminum screen to the perimeter of the stair provides transparency and a lightweight
appearance when viewed from Hastings Street. The Linea weatherboard clad fin walls each side of the stair flights
vertically connect the roof planes to the stair structure.




Image 8 Hastings Street Frontage Elevated View