Flats and houses 1958 : design and economy.

  • Great Britain. Ministry of Housing and Local Government.
Date:
1958
Catalogue details

Licence: Public Domain Mark

Credit: Flats and houses 1958 : design and economy. Source: Wellcome Collection.

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    2. Sunlighting The Standard The British Standard Code of Practice (CP 5: 1945, Chapter 1(B)) recommends that one of the main windows in living rooms and, where practicable, in kitchens and bedrooms also, should be so placed that sunlight can enter for at least one hour at some time of the day during not less than 10 months of the year from February to November. In arriving at this standard, (a) sunlight is not considered as entering a room if the horizontal angle between the sun’s rays and the plane of the window is less than 223°; and (5) sunlight is not considered to be useful unless the sun has an altitude above the horizon of more than 5°. The Indicator A Standard Sunlight Indicator has been devised which can be used as a quick and approximate means of ensuring that buildings are so placed that it would be possible for the standard to be achieved. The indicator is designed to show, when placed on a layout plan against a window of a building, for how long that window could be lit by the sun on January 21st and November 22nd. For the 10 months between these dates the number of hours of possible sunlight per day will of course be greater. The indicator is made of transparent material and drawn at the scale of the plan to be examined. Standard Sunlight Indicator for 51° 30’ N., the approximate latitude of London, Cardiff and Bristol NORTH JANUARY 2!st AND NOVEMBER 22N0 (10 MONTHS) STANDARD SUNLIGHT INDICATOR LATITUDE 5I° 30' (LONDON, CARDIFF, BRISTOL) 400 300 100 O 100 200 300 [es tt (Ey a ee OT Oe LE eA Ne OT TY He | {ee a ata ee Sr 4 {[D—WS—~ Wisi. N SOUTH