The grumble point: is it still worth the candle?

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Structural Survey

ISSN: 0263-080X

Online from: 1983

Subject Area: Built Environment

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Document Information:
Title:	The grumble point: is it still worth the candle?
Author(s):	Michael Pitts, (Michael Pitts is a Consultant and Former Senior Partner with Edmund Kirby & Sons, a private practice of architects and surveyors where he specialises in rights to light matters. He knew John Anstey for many years. Both followed their respective fathers into rights to light practice and both shared an enjoyment of music making.)
Citation:	Michael Pitts, (2000) "The grumble point: is it still worth the candle?", Structural Survey, Vol. 18 Iss: 5, pp.255 - 258
Keywords:	Lighting, Measurement, Rules
Article type:	General review
DOI:	10.1108/02630800010360092 (Permanent URL)
Publisher:	MCB UP Ltd
Abstract:	The purpose of this paper is to encourage discussion on whether the acceptable standards of natural illumination have increased since Colls was decided in 1904. It invites discussion as to whether new parameters should be set or whether the 50/50 rule should be changed. Reference is made to the circumstances in which the grumble point of 0.2 per cent was calculated and to the method of measuring this accurately with the aid of a Waldram diagram. Comments are invited from readers to continue the debate.