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2. A 5ft (height)

  x 5ft (width)
  window is

  located on a
  south facing
  wall at 29N

  latitude. Sill
  height is 2ft

  and head
  height (lintel)                                              nd
  of the window                     • Equinox is on 22             September – 75

  is 7ft. (Figure is                    degrees
                                                                         st
  for reference)                    • Winter solstice is on 21 December
                                        – 50 degrees

  a. Calculate

  the depth of                      Calculations to be done for the south
  the overhang                      faced ,29N latitude that is  for Delhi so

  such that it                      the altitude for the same is
  will                              determined by analysing the amount
  completely                        of heat gained in the particular month

  shade the                         and time.
  window at

  noon on
  equinox and
  expose it fully

  at noon on
  winter

  solstice. (Hint:
  Use simple

  sketch to
  determine

  this)
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