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John Herts

Main entrance

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As all doors in the external envelope of a building can be used as a final exit when do you not have to put a crash bar/push pad type mechanism on a main entrance door or other frequently used door to a school building?  E.g. some doors have a digital lock on them which has a lever handle internally.

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A usual rule of thumb is if the route is used by 60 or more it needs to be panic proof (push bars) otherwise any normal emergency exit device (which includes lever handles as well as push pads) will suffice

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Originally panic bars were only used in places of public assemble and where not used for normal access/exit, the main doors were used instead. As the main doors had to cope with the total occupancy, there was an extra amount of exit width and it  was considered the chance of a panic was low because of the choice of the number of exits available. In an emergency most would be exiting via the emergency exits where it was considered a panic might happen, so emergency exits were fitted with panic bars and not the main doors, but not always.

Over the years they started to be used in many buildings, usually on emergency fire exit doors which were only used for emergencies, now days  it is all about risk assessment and as a rule of thumb AB,s used by 60 or more is reasonable.

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