Page 69 - Building Regulation Design Guidelines - Architecture Book (Blue Code)
P. 69

SEcTION  9   OPENINGS REQUIREMENTS                                         SEcTION: 9  OPENINGS REQUIREMENTS







                9.1   WINDOWS

                     9.1.1   All habitable spaces (whether residential or non-residential),
                            including lobbies or corridors, shall have a lighting and ventilation
                            opening whose area is not less than 10% of the habitable space
                            floor area. And 5% for service spaces such as kitchens, bathrooms,
                            toilets, storerooms and staircases. (figure -17)



                               ≥ 1.2 m                     ≥ 0.6 m
                                *W      ≥ 1.2 m             *W    ≥ 1.0 m                                               With Scenic View and Balcony
                  ≥2.0 m
                          ≥ 0.9 m                  ≥  0.9 m

                                    *A                         *A
                                   Habitable Spaces            Service Spaces
                                         *W = 10%A                  *W = 5%A
                                  Figure-17   Windows Requirements


                     9.1.2   The position, size and type of windows determine the pattern                          ≥0.90 m
                            of daylight in an internal area. The daylight shall be designed to
                            enhance the function of spaces such as, provision of windows for
                            classrooms shall be at the left side and so on.                                                   In General
                     9.1.3   Natural ventilation and sky light openings of not less than 5% of the
                            floor area for industrial buildings (factories and warehouses) shall
                            be provided, in order to enable natural lighting to reach the deepest
                            point within the building area unless verified from the Authority.
                     9.1.4   The main staircase of the building shall be provided with
                            openings for lighting and ventilation in every floor level starting
                            from the first until the highest level with exemption to towers as
                            mentioned in section-13.                                                                                           1.25 m
                     9.1.5   Height of window sills shall not be less than 0.9 meter except when
                            there is terrace or balcony outside the window, otherwise, balusters
                            with minimum height of 0.9 meter needs to be provided for safety.                                  Kitchen
                            (figure -18)                                                                       Figure-18   Window Sill Height via Different  Usage
                *A = Floor Area / *W= Window Area
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