Page 26 - PowerPoint Presentation

For equinox 22 nd September the
Q.2 A 5ft (height) x 5ft (width) window is located on a south facing altitude angle is 75⁰(for south

wall at 29N latitude. Sill height is 2ft and head height (lintel) of the facade).
window is 7ft.

a. Calculate the depth of the overhang such that it will completely
shade the window at noon on equinox and expose it fully at noon
on winter solstice. (Hint: Use simple sketch to determine this)

• Equinox is on 22nd September – 75 degrees

• Winter solstice is on 21st December – 50 degrees

Calculations to be done for the south faced ,29N For winter solstice 21 st
December the altitude angle is
latitude that is for Delhi so the altitude for the same is
50⁰(for south facade).
determined by analysing the amount of heat gained in

the particular month and time.