The bridges also function as a fire escape from the second floor and therefore have been designed for post-disaster Zone 2 earthquake conditions and are designed to remain standing during and after an earthquake. The bridges are fixed at the stair towers and supported by sliding bearings at the terminal side. The bearings have Teflon inserts in polished stainless steel sliders fitted to a tolerance of 1 mm. They allow parallel movement to the bridge only, plus or minus two inches, and restrain both vertical and lateral movement.
[[Auto Insert Gallery here]]
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