The Ontario Building Code | Restraint of Joist Bottoms
184.108.40.206. Restraint of Joist Bottoms
(1) Except as provided in Sentence 220.127.116.11.(1), bottoms of floor joists shall be restrained from twisting at each end by toe-nailing to the supports, end-nailing to the header joists or by providing continuous strapping, blocking between the joists or cross-bridging near the supports.