The simulations confirm that the dryers in a laundry room are a bottleneck resource and an equal number of washers and dryers in a laundry room is not an optimal configuration. It appears that Owen Graduate Hall's laundry gets good performance simply by having a large number of both washers and dryers. However, by changing the balance of washers and dryers we can reduce response time to close to optimal levels.
It appears that the optimal ratio of washers to dryers is approximately 2:3. In our simulation, it was precisely 3:5. Future laundry room installations should adopt this ratio and abandon the 1:1 washer/dryer ratio.