WAC 246-359-350
WAC 246-359-350. Roof connections for concrete masonry units (CMU)
(1) Framing members must bear on a two-inch nominal thickness pressure treated plate anchored to the CMU wall with one-half inch diameter bolts. The anchor bolts must be spaced at maximum of six feet on center and a minimum of twelve inches from end of each plate member, and must be embedded into the top of the wall bond beam a minimum of four inches.
(2) Each roof framing member must be secured to the treated plate by installation of a metal tie as approved by the department of health.