Complex sentence: For most designers, buildability considerations and ensuring that the structure can be easily maintained and repaired will be part of their normal work, and thinking about the health and safety of those who do this work should not be an onerous duty.
Split into simpler sentences: For most designers, buildability considerations, and ensuring the structure can be easily maintained and repaired is part of their normal work. Considering the health and safety of those who do this work should not be an onerous duty.