Question

when locating windows in a kitchen, what standard applies under nbcp for natural light?
the window area must be at least 10% of the floor area of the kitchen.
nbcp requires window placement at a minimum height of 1.80 meters.
kitchen lighting is considered exempt if under 12 sqm.
the 10% rule only applies if mechanical lighting is unavailable.

Explanation:

Under NBCP for natural - light in kitchen window - location, the common standard is that window area should be at least 10% of kitchen floor area. Other options are incorrect as there's no such NBCP - specified minimum height for window placement in this context, kitchen lighting isn't exempt based on area in this regard, and the 10% rule isn't conditional on mechanical lighting unavailability.

Answer:

The window area must be at least 10% of the floor area of the kitchen.