The Structural Engineer > Archive > Volume 45 (1967) > Issues > Issue 2 > Correspondence. 'Design of Network Arches' by Per Tveit, published in The Structural Engineer, July
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Correspondence. 'Design of Network Arches' by Per Tveit, published in The Structural Engineer, July 1966

Mr. E.C. Edge (Engineering Analysis Section, the Marconi Company Limited) writes: 'On page 255 the first sentence in the second paragraph in the second column reads, " The logarithmic decrement of the oscillations was only 1.5 per cent." It is unusual to describe the logarithmic decrement as a percentage.'