Author: Dickie, JF;Dunn, D J
First published: N/A
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Dickie, JF;Dunn, D J
This paper discusses in summary form the forthcoming changes in National Insurance as particularly affecting the self-employed, but including those with other occupations as well. It is written to provide a quick resume of the position as it is known, which can be assimilated at one reading. It aims to provide an awareness so that those affected can see what further action is required and what further areas need to be studied. It must be emphasized, however, that it is not prepared as a substitute for official publications, nor for the Statutes.
Test results of nine stiffened panels loaded axially show that the Perry-Robertson formula accurately predicts the collapse load and the direction of collapse provided the imperfection term ©¯ is interpreted in a logical manner. A new expression for ©¯ is derived. Four other panels were tested in bending or with combined bending-axial loadings. Simple rules are also presented for the design of stiffened panels with these
The interest in improving fire escape facilities continues unabated and tends to centre on the helter-skelter solution. We may have treated this somewhat light-heartedly in the January issue: not because we found it risible, but because it is pleasant to think that a concept normally associated with children's pleasure may solve a horrifying hazard.