Instructions on Modern American Bridge Building

"Instructions on Modern American Bridge Building" by G. B. N. Tower is a scientific publication written in the mid-19th century. This treatise serves as a practical guide for engineers entering the field of bridge construction, focusing on the principles and methodologies of designing wooden bridges. The book addresses the strains on bridge components and offers calculations, designs, and tables essential for the construction process. The content of the book is structured to assist young engineers in understanding the physical principles governing bridge design. It discusses the various materials used, such as wood and iron, detailing their strengths under different strains: tension, compression, and detrusion. Tower provides formulas for calculating weights, dimensions of bridge members, and helpful tables for estimating quantities. He outlines different truss designs, explaining the importance of structural integrity and offering practical examples of building practices. Through these detailed instructions, the book emphasizes the importance of adhering to safety standards and thorough design methodologies in bridge engineering.