To make sure that structures are safe , Seismic and other engineers will __ test full size structures before construction starts square them by building scale models and testing those instead. Much cheaper and safer. build the full size structures and closely monitor them square to see that nothing goes wrong. Repairs and modifications are immediately made if something does go wrong.

To ensure that structures are safe, seismic and other engineers will test full-size structures before construction starts. This involves building scale models and testing those instead, which is much cheaper and safer. Additionally, they will build the full-size structures and closely monitor them to see that nothing goes wrong. Repairs and modifications are immediately made if something does go wrong.