200 W MARINE VIEW DR BAYWOOD 2025-09-16

09/16/2020 Todd Schutz - Nelson Worldwide Page 3 2. The Roof Framing Plan on Sheet 52.1 appears to indicate unspecified wide -flange drag struts at multiple locations, including but not limited to Grids L, 2, and 7. The required framing should be specified. See IBC Sections 107.2.1 and 1603.1. RESPONSE: Please see response letter from Shutler Consulting Engineers Inc. 3. Detail P/55.0 appears to indicate that the roof trusses provide the out -of -plane support for the concrete walls and references Sheet 53.1. The required loading on this sheet should be clarified. See IBC Sections 107.2.1 and 1603.1.8. RESPONSE: Please see response letter from Shutler Consulting Engineers Inc. 4. The Roof Framing Plan on Sheet 52.1 appears to specify out -of -plane support for the concrete walls per Detail A/55.0 at multiple locations, including but not limited to Grids 1,1.5, 7.5, 8, M, M.S, and P. Detail A appears to rely on a connection that will induce cross -grain bending in the ledger, which is not permitted per IBC Section 1613.1 and ASCE 7-10 Section 12.11.2.2.3. The connection should be revised. Calculations substantiating the connection should be submitted for review. See IBC Section 1604.1. RESPONSE: Please see response letter from Shutler Consulting Engineers Inc. 5. The diaphragms should be provided with continuous cross -ties across the building diaphragm per IBC Section 1613.5.1. The typical connection shown in Detail E/55.0 for the abutting trusses does not appear to include a connection. The design should be revised. The spacing of the cross -ties should be specified. RESPONSE: Please see response letter from Shutler Consulting Engineers Inc. 6. Continuing with the previous comment, the cross -ties are required to develop the cumulative shear loading from the sub diaphragms at the building perimeter and distribute it into the roof diaphragm. Axial loads for the trusses designated as part of the cross -ties should be specified. Alternatively, all trusses supporting the exterior walls should be interconnected for a minimum diaphragm ratio of 2.5:1. See IBC Sections 1603.1.8 and 1613.5.1. RESPONSE: Please see response letter from Shutler Consulting Engineers Inc. We hope this information answers your questions and concerns satisfactorily. Please contact me to discuss further if you should need additional information or clarification and thank you for your attention to this matter.