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5.22 Show solid blocking at exterior 5.29 Note rectangular sawn lumber <br /> walls on trussed roofs. UBC beams, rafters, joists or other <br /> Section 2320.12.8. bending members shall be <br /> supported laterally to prevent <br /> 5.23 Ridges, hips and valleys shall be at rotation or lateral displacement. <br /> least one size larger than supported <br /> rafters. UBC Section 2320.12.3. 5.30 Show double joists. Floor joists <br /> shall be doubled under bearing <br /> 5.24 Provide supports for ridge/hip I partitions running parallel with the <br /> valley intersections to beam and/or joists. UBC Section 2320.8.5. <br /> bearing walls. <br /> 5.31 Buildings shall be provided with <br /> 5.25 Joists, rafters appear to be exterior and interior braced wall <br /> overspan at: lines. Spacing shall not exceed 34 <br /> feet on center in both the <br /> longitudinal and transverse <br /> 5.26 Show blocking at ends and at directions in each story. Braced <br /> supports of ceiling joists and for wall lines shall consist of braced <br /> rafters larger than 2"x 4" at bearing wall panels which meet the <br /> walls. requirements for location, type and <br /> amount of bracing specified in <br /> 5.27 In open beam construction, provide Table 23-IV-C-1 and are in line or <br /> strap ties across the beams at the offset from each other by not more <br /> ridge support and provide tie at wall than 4 feet. Braced wall panels <br /> plates. UBC Section 2304.4.1 shall start at not more than 8 feet <br /> from each end of a braced wall line. <br /> 5.28 Show attic ventilation. Minimum All braced wall panels shall be <br /> vent area is 11150 of attic area or clearly indicated on the plans. See <br /> 11300 of attic area if at least 50% of 2320.11.4 for alternate braced wall <br /> the required vent is at least 3 feet panels. UBC Section 2320.11.3. <br /> above eave vents or cornice vents. <br /> Calculate required area and area <br /> provided. UBC Section 1505.3. <br /> 11 <br />