These books demonstrate the role of architecture in development of technology. Vitruvius described many machines, which were developed for engineering structures such as hoists, cranes and pulleys, catapults, ballistae, and siege engines. He also describes the construction of sundials and water clocks, and the use of an aeolipile (the first steam engine) as an experiment to demonstrate the nature of atmospheric air movements (wind).

It covers wide ranging topics- from architectural education, and the development of humanity, to temple design and building typology, construction methods and materials, climatic effects and acoustics, aqueducts and waterworks, astronomy and sun dials, defense apparatus and other machinery. Architectural principles have been explained by design examples and drawings. He formulated the basic principles of city planning, including the selection of site, its orientation, topography and health aspects of ground, besides its military necessities. Street layout to the direction of the winds emerged as an important fact of planning.

Undoubtedly the value of this treatise in understanding the classical ideals of architecture, materials of construction and technology cannot be overemphasized.