BRE BR379 PDF

Conventional solar prediction techniques tend to assume an unobstructed site, but nearly all urban and suburban sites are obstructed to some degree. This report contains manual tools to find, for almost all of Europe, how much skylight, sunlight and solar gain reach the outside of an obstructed window or a point in a building layout. Complex as well as simple obstruction profiles can be modelled. The tools comprise: a skylight indicator, sunlight availability indicators, sunpath indicators, and solar gain indicators. 59 pages and transparent direction finder.