Complex sentence: These characteristics are not found in the construction of this building; quite the contrary, the concrete is used in an elegant and even decorative fashion, evidencing Nechodoma's knowledge of North-American construction techniques and his complete distance from the local building customs.
Split into simpler sentences: These characteristics are not found in the construction of this building. Nechodoma used the concrete in an elegant and even decorative fashion, demonstrating his knowledge of North-American construction techniques and his distance from the local building customs.