CRS designed the first tank in the state to address concerns for liquefaction during seismic events and high wind issues, including both post-tensioned floor and roof slabs. This will avoid the roof failures that Spanish Fork is currently experiencing. To address concerns for liquefaction during seismic events and high wind issues, CRS designed the first tank in the state to include both post-tensioned floor and roof slabs. This will avoid the roof failures that Spanish Fork is currently experiencing.