It 486 Building Systems and Concepts In addition, optimized structural systems favor more efficient load paths and tend to eliminate less efficient ones. architecture often benefited from this discipline. Each of these sections engineers and that the earlier … While this can greatly reduce the quan-tities of steel and concrete, it often results in a building with less redundancy. structural engineers. The book then divides into sections on the He stresses that buildings are designed as a major structural materials - steel, concrete, collaborative task between architects and masonry and timber.