Author: Stevens, L K
First published: N/A
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Stevens, L K
This paper presents an extension of the Cross method of moment distribution to the analysis of continuous frames with members having hinges located between supports. General expressions for the stiffness, carry-over factor and fixed-end moments are derived for members with variable moment of inertia. Numerical examples are given to illustrate the procedure of analysis.
S.L. Lee, R.S. Harwell and F.P. Wiesinger
The paper begins with a brief description of an operation on an ordinary steel-framed building which was in danger of collapse. Glass played an important role in preventing the complete collapse of this building before the remedial works were put in hand. Attention is directed to the inherent strength of glass, which is very much in evidence when glass is drawn into fine filaments. Descriptions of glass reinforced plastics and other ' two-phase ' materials follow and details of the various types of glass reinforced plastics are included. The properties of glass reinforced plastics, structural steel and aluminium alloy are tabulated for comparison. In conclusion possible future developments in the field of 'two-phase' materials are mentioned and structural engineers are reminded of the necessity to familiarize themselves with the
properties of these new materials and to assist in their development for structural purposes.
The paper offers a solution in general terms for the design of the two major types of power station in use today. The variety of problems confronting the engineer when preparing a design for either a conventional, coal-fired or a modern, nuclear-powered station are discussed and special reference is made, under the following sub-headings, to a number of essential factors which control the design and construction of a power