Solar shading protractor
Sun shading catalogue, Adequate shading: Sizing overhangs and fins, published by United Nations Human Settlements Programme (UN-Habitat) in 2018, states: ‘The solar shading protractor is another useful tool which allows one to study the effects of sunshades, overhangs and fins on the building façades. It has the same dimensions as the polar diagram and can be overlaid to it to show the shading effects caused by vertical and horizontal overhangs, with respect to a specific point of view, which must coincide with the centre of the chart. This produces the shading mask of the solar shading device.’
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