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Articles 31 - 33 of 33
Full-Text Articles in Engineering
Recent Developments In The Use Of Precast Concrete Units For Buildings In The United States And Iran, Khosrow Ebadi Farshchi
Recent Developments In The Use Of Precast Concrete Units For Buildings In The United States And Iran, Khosrow Ebadi Farshchi
Dissertations and Theses
The object of this study was to investigate the recent developments in the use of precast prestressed concrete members for buildings in the United States and Iran. In the United States, the study was concerned with developments in the usage of members such as slabs, wall panels, beams and columns. The latest technical and engineering reports, along with personal interviews, were used, and a number of case studies were conducted on recently built structures. The author also studied the newest developments in the precast concrete industry in Iran. A questionnaire was formulated in both Persian (native language of Iran) and …
Direct Design Of A Portal Frame, Angel Fajardo Ugaz
Direct Design Of A Portal Frame, Angel Fajardo Ugaz
Dissertations and Theses
This investigation was undertaken to develop plastic design aids to be used in the direct design of optimum frames. It uses the concept of minimum weight of plastically designed steel frames, and the concept of linear programming to obtain general solutions. Among the special characteristics of this study are: A. The integration of both gravity and combined loading conditions into one linear programming problem. B. The application of the revised simplex method to the dual of a parametric original problem. C. The application of A and B above in the development of design aids for the optimum design of symmetrical …
Comparative Study Of Lightweight And Normal Weight Concrete In Flexure, Mohammad Zareh
Comparative Study Of Lightweight And Normal Weight Concrete In Flexure, Mohammad Zareh
Dissertations and Theses
This investigation represents a comparative study of the flexural behavior of lightweight and normal weight concrete. Both theoretical and experimental moment-curvature characteristics of the tested specimens were used to study the flexural behavior.
A generalized computer program to determine the moment-curvature relationships of a singly reinforced rectangular concrete beam was developed.
For this limited study it was observed that lightweight concrete beams when compared to normal concrete beams achieve comparable moment capacity (about 92% of normal weight concrete) but exhibit higher deflections (about 40% more than normal weight concrete).