29 cfr part 1926 subpart r July 8, 2019 16 32 64 128 What does osha 29 cfr part 1926 subpart m require 29 code of federal regulations cfr part 1926 subpart p 29 cfr part 1926 safety and health regulations for construction subpart 1053 29 cfr part 1926 safety and health regulations for construction subpart 451 29 cfr part 1926