Complex sentence: This dome construction allowed main hall of the mosque to be committed to the proportions and the aesthetics of the 30 m high interior above the mihrab, meanwhile 40 m high outer dome of the main building could be designed towards maximal impression and visibility.
Split into simpler sentences: This dome construction allowed the main hall of the mosque to be committed to the proportions and the aesthetics of the 30 m high interior above the mihrab. Meanwhile, the 40 m high outer dome of the main building could be designed for maximal impression and visibility.