Have tested and it does work, but with some limitations:
1. I think you need to tell it to use both connections simultaneously through Network Preferences, by default I believe it just uses whichever it sees as the 'best' network
2. As mentioned before, the two different adapters need to be on different subnets otherwise it will be unable to decide which interface to route traffic over
3. Only set a default gateway on one of the interfaces otherwise you'll get connection problems.
What I'd do is to set the interface that is connecting to the building LAN and out to the internet to use DHCP and pick up its settings automatically, then configure all the things on the wireless side statically and with just the most basic of settings (IP address and subnet mask only).
That should work, but obviously my set-up is not identical to yours so there's no guarantee.
1. I think you need to tell it to use both connections simultaneously through Network Preferences, by default I believe it just uses whichever it sees as the 'best' network
2. As mentioned before, the two different adapters need to be on different subnets otherwise it will be unable to decide which interface to route traffic over
3. Only set a default gateway on one of the interfaces otherwise you'll get connection problems.
What I'd do is to set the interface that is connecting to the building LAN and out to the internet to use DHCP and pick up its settings automatically, then configure all the things on the wireless side statically and with just the most basic of settings (IP address and subnet mask only).
That should work, but obviously my set-up is not identical to yours so there's no guarantee.