Complex sentence: The central atrium is completely glazed behind deep concrete balconies, this arrangement was to make it conducive to study although there was good natural light the design was an early recognition of solar gain and the damage it can cause to books.
Split into simpler sentences: The central atrium is completely glazed behind deep concrete balconies; this arrangement was to make it conducive to study. Although there was good natural light, the design was an early recognition of solar gain and the damage it can cause to books.