(1)
Except as specified in Articles 9.8.9.4. and 9.8.9.5., stairs and ramps shall be designed for strength and rigidity under uniform loading criteria to support specified loads of
(a)
1.9 kPa for stairs and ramps serving not more than one dwelling unit or a house with a secondary suite including their common spaces, and
(b)
4.8 kPa for other stairs and ramps.