Manual calculation
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Until the 1980s, the only means of calculating, with any kind of accuracy, the position of the 0.2% skyline within a room was by means of the Waldram diagram (Figure 1). This was developed by Percy Waldram FRICS in the 1920s. This diagram translates the illuminance of the sky at any...Explore the subscription options here to get full access to isurv, including downloads.
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