CASE STUDY ROYAL ARTILLERY BARRACKS
protrusions provided spectator access to the venue. The BIM models were also rendered
so that the design team could check that shadows would not affect the shooters. With the cladding designed, Mott
MacDonald turned their attention to thermal and airflow modeling and to the lighting analysis (see box on page 38) to ensure conditions inside the buildings would provide perfect conditions for competitors and audience alike. ‘There was no environmental criterion for the venues,’ says Leon Higgins, a director of Mott MacDonald and the man responsible for the scheme’s MEP design. All three venues are ventilated naturally
using stack effect ventilation. The buildings are fitted with an inner skin, which helps hide the structure and, more importantly, it helps to control the airflow through the buildings. Fresh air enters the buildings through the
ground level protrusions. Some air will rise up in the void between the inner lining and outer skin before exiting through openings
in the side of the rooftop protrusions. The remainder of the fresh air passes through holes at the base of the inner lining and into the void beneath the spectator seating. From here it permeates out through perforations beneath the seating before making its way upwards and out through the roof; drawing in cold air at low level in the process. The venues’ seating was provided by LOCOG so Mott MacDonald used a TAS model to develop the permeability of the seating system and to check spectator comfort. Stack effect ventilation is also used to
remove the puff of smoke emitted when the guns are fired. A small grill is fitted to the canopy above each of the shooters for this purpose. ‘It is not guaranteed to work in all conditions, but modelling showed that under most conditions the grille will provide a natural extract system at the firing line,’ explains Higgins. Because the shooting targets are situated in the open, fresh air will also enter the venue through the opening adjacent to the shooters. Computational Fluid Dynamics (CFD) modelling was undertaken to verify that
For the record, the actual trusses used to support the venues started life as the staging for Madonna’s Sweet and Sticky tour
BIM helped engineers understand how the venue could be dismantled and reused
Air speed was modelled to ensure there was no excessive air movement in the 10m range 40 CIBSE Journal November 2012
www.cibsejournal.com
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80