Posted Nov 12, 2013, 5:39 PM
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Registered User
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Join Date: Jan 2008
Posts: 8,047
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Quote:
Originally Posted by Nathan
I don't think the province has removed that condition from their funding, so it's probably still a requirement.
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Concept design says:
9.5 Roof Ready Spectator Roof Base Condition Independent Retractable Roof Ready A number of options were considered for enabling
schemes (Roof Ready) allowing various upgrades to
the roof over time. The simplest of these is an open
stadium with a bowl structure capable of accepting
a roof at a future date. As the base case is now
a Spectator Roof, only two roof ready options are
possible; filling in the aperture to create a permanent
indoor venue or installing an operable roof allowing
either indoor or open use. As this flexibility is
required, the roof ready proposal is for an operable
roof.
There are a number of factors to consider in
designing the stadium to accept an operable roof in
the future, including: • Foundation implications
• Geometry
• Original roof structure
• Fire strategy
• Internal environment As detailed in this report, the summer climate can be
addressed without the need for cooling. The internal
environment can be managed by the air infiltration
louvers. Hence no provision needs to be made for
additional plant in the event a roof is added.
The three most critical issues are foundations,
geometry and base roof structure. There are many
options here but the broad range is; maximum
initial works or minimal initial works, i.e. implement
as many elements as in the base scheme leaving
less to add in the future or; do as little as possible
initially and leave it for the future. The former option
is attractive if the eventual upgrade is a certainty as
the overall cost is less, i.e. high initial cost with lower
conversion cost. The latter is better if the eventual
upgrade is only a possibility or initial funds are
capped and insufficient, i.e. lower initial cost and
higher conversion cost, which is the case with the
current funding arrangement for the stadium project.
Given the innovative approach and encouraging
wind performance results of the Spectator Roof, it
is quite possible that the fans will find this the best
blend of open air and protected. Fortunately, the
geometry of the proposal is well suited to receiving a
future operable roof without increasing the initial cost.
The provision here is spatial and the proposed base
design has the following benefits in regard to this: • Sunken bowl and minimal end stands
• High roof line These factors allow an independent operable roof to
be added in the future. This would comprise a pair
of arches spanning the length of the field outboard
of the side lines. They would be mounted on vertical
supports landing at Main Concourse on the outer
perimeter of the end stands. The large volume here
allows for future construction access for foundations.
The arches would fit under the current roof plane
and carry the moving roof panels. A number of
options are possible for the moving panel including;
independent moving and rotating panels, concertina
fabric or fixed large panel. The design of these
will be reviewed in the next stage together with the
disruption implications for erecting the arches. Some
disruption is inevitable but with prefabrication and
partial occupation, games could continue. However
it is generally more expensive than just shutting the
stadium for a season or half a season and completing the work in one phase.
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