After a lot of debate with Andrew last friday, we had a thorough look at the roof and the construction of the bowl itself so that it blends well with the main concept. The idea that the housing ribbon behaves as the main support for the stadium still remained, both visually and structurally.
The steel truss system was discarded as we wanted to see the bowl with the roof as a heavy object supported over the housing. So we are trying to investigate a light weight concrete roof. First thoughts were to puncture the roof along the same lines as the housing, with regular divisions.
But on second thoughts we decided to make this as a gradient of solid and void with more solid towards the support and gradully reducing to void towards the end.
Now the bowl and the entire system for construction-
Enhancing on the idea of the neighbourhood supporting the stadium, we propose to have bridges connecting to the tribune from the neighbourhood at regular intervals. This serves both as functional bridges for access as well as structural support to the main stand, with tapered columns supporting the bridges towards the bowl.
The sustainablility consult yesterday encouraged us to investing more on daylighting in the atrium like space all around in between the neighbourhood and the tribune. Thus we decided to split the stands at regular intervals to have light streaming in from inside the stadium.
Let see if this system could be made a little irregular to go with the housing pattern in the ribbon.
Another important thing to be thought about is, if the field has to be slid out, this demands a column/ support free zone for almost 70m along the east side. So we need to check how much free span we can do with this system.
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