Laserfiche WebLink
L 4 • • <br /> 607 Riverside Road <br /> B1909-009 <br /> City Review Comment Response <br /> etails 3/A8.1 and 9/A8.1 specify connections of the interior non-bearing walls to the <br /> structural roof framing to resist out-of-plane loading. The connections place a torsional load <br /> on the unbraced bottom surface of the framing. The framing shall be provided with stability <br /> bracing or shall be shown by analysis to be adequate to resist loading from the walls in <br /> addition to other concurrently loads. Walls loads on the framing shall be determined per IBC <br /> Section 1607.14. See IBC Sections 1603.1, 1604.1, and 1604. <br /> Please see revised sheet A8.1 as well as new structural calculations attached. <br /> 12. 5/A8.1 specifies 6-inch 10-gage ceiling joists where GWB ceilings are provided. See IBC <br /> 'jSections 107.2.1 and 1603.1. The following comments shall be addressed: <br /> a. The detail shall show or specify that the joists bear on the walls at each end and <br /> are provided with positive connections to the wall top tracks. <br /> b. The maximum joist spans shall be specified. <br /> Please see revised sheet A8.1 as well as new structural calculations attached. <br /> Structural <br /> 1. Sheet S1.1 shows modifications to the existing concrete tilt-up wall panels that include cutting <br /> new openings in the panels. The panels are the vertical lateral force resisting system (LFRS) <br /> for the building and have been designed as Special Reinforced Concrete Shear Walls using a <br /> response modification factor of R=5.0 (i.e., bearing wall system per ASCE 7-10 Table 12.2-1 <br /> Item A.1). The following comments shall be addressed: <br /> a. Calculations substantiating the performance of the modified lateral force resisting <br /> system, and in particular the modified wall panels, shall be submitted for review per IEBC <br /> Section 807.5. Note that construction for this building is currently being performed <br /> under Permit No. B1801-035. The 10% DCR limit and reduced seismic loads per the <br /> exception shall not apply. See IEBC Section 807.2, IBC Sections 1604.1, 1604.4, and <br /> 1901.2, and ACI 318-14 Sections 18.10 and 18.11. <br /> Please see attached response letter from AHBL. <br /> b. The modified wall panels shall not be considered as part of the LFRS if they do not satisfy <br /> the reinforcement requirements of ACI 318-14 Sections 18.10. Documentation <br /> substantiating compliance with this section shall be submitted for review. See IBC <br /> Section 1901.2. <br /> Please see attached response letter from AHBL <br /> 19-1011 glacier peak-compasspermit review response letter draft <br />