Building Construction Handbook, Eighth Edition

Monitor Roofs ~ these are basically a flat roof with raised glazed portions called monitors which forms aroof having a uniform distribution

of daylight with no solar glare problems irrespective of orientation

and a

roof with easy access for maintenance. These roofs can be constructed with light long span girderssupporting the monitor frames, cranked welded beams following the profile of the roof or they can be of aprecast concrete portal frame format.

Long Span Roofs