Complex sentence: The design of the tower's glass façade is intended to reduce wind loads on the building by 24%, meaning fewer construction materials are needed, including 25% less structural steel; this is expected to save an estimated US $58 million in material costs.
Split into simpler sentences: The design of the tower's glass façade is intended to reduce wind loads on the building by 24%. As a result, the building's constructors are expected to save an estimated US $58 million in material costs.