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Dr. John Alexander Low Waddell (January 15, 1854 – March 3, 1938, often shortened to J.A.L. Waddell and sometimes known as John Alexander Waddell) was a Canadian-American civil engineer and prolific bridge designer, with more than a thousand structures to his credit in the United States, Canada, as well as Mexico, Russia, China, Japan, and New Zealand.
"Vernacular architecture and "historical seismography": an experience research" (PDF). Structural Analysis of Historical Constructions - 2 Volume Set: Possibilities of Numerical and Experimental Techniques - Proceedings of the IVth Int. Seminar on Structural Analysis of Historical Constructions, 10-13 November 2004, Padova, Italy .
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The Waddell "A" Truss Bridge is standardized truss bridge design that was first patented in 1893 by prolific civil engineer John Alexander Low Waddell. The design provided a simple low-cost, high-strength solution for use by railroads across the United States and Empire of Japan for short spans of around 100 ft (30.5 m).
The book is aimed at beginners, with each chapter outlining a single convention, including takeout doubles, negative doubles, and cuebid raises. [1] All chapters are followed by a quiz. Since its publication, the book has sold over 300,000 copies, [ 2 ] and won the American Bridge Teachers' Association Book of the Year (Student) award. [ 3 ]
Cable-stayed bridge and Suspension bridge: 1,408 m (4,619 ft) Yavuz Sultan Selim Bridge, [2] Istanbul: Cantilever bridge: 549 m (Quebec bridge) 1042.6 m (Forth Bridge) Cantilever spar cable-stayed bridge: Clapper bridge: Covered bridge: Girder bridge: Continuous span girder bridge Integral bridge: Extradosed bridge: 1,920 m Arrah–Chhapra ...
He published the Molesworth's Pocket Book of Engineering Formulae. This useful little volume contained formulas and details on many engineering related subjects. The first edition was published in November 1862 and ran to over thirty editions (The twenty-eighth edition [9] was published in 1921). His other works include: State Railways in India ...
Truss bridge for a single-track railway, converted to pedestrian use and pipeline support. In this example the truss is a group of triangular units supporting the bridge. Typical detail of a steel truss, which is considered as a revolute joint Historical detail of a steel truss with an actual revolute joint