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 Vertical Lifting Rigid Hangar Doors
Vertical lifting rigid doors are only practical for relatively short spans and are not found with the
swinging mullions of the fabric doors. Thus, beyond a limit of about 20 m (70 ft), an alternative
door type must be selected. As with vertical lifting fabric doors, the rigid doors are completely
supported by the structure. However, typically the door weight is carried by columns at each
door jamb, rather than the roof structure. No door pockets are required and the entire doorway is
available for use but the size limit is a serious drawback.
Open Doorway
Typically an open doorway is only used in remote sites or under expeditionary conditions. The
facility would not be suitable for storm sheltering aircraft and the facility itself would also be
much more vulnerable to storm damage.
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