The Ontario Building Code | Application
(1) Spans provided in this Subsection for joists, beams and lintels supporting floors shall apply only where,
(a) the floors serve residential areas as described in Table 184.108.40.206., or
(b) the uniformly distributed live load on the floors does not exceed that specified for residential areas as described in Table 220.127.116.11.
(2) Spans for joists, beams and lintels supporting floors shall be determined according to Subsection 4.1.3. where the supported floors,
(a) serve other than residential areas, or
(b) support a uniform live load in excess of that specified for residential areas.