3632 RUCKER AVE THE LANDING AT PORT GARDNER 2023-04-06

Mr. Charlie Morgan,Jr. Charles Morgan &Associates Plan Check Number: B1805-043, Second Review • October 24, 2018 wall. Note that the location of the retaining wall on Sheets A1.1 and A3.1 does not appear consistent with Sheets C1.0 and C2.0 of the civil drawing set. See IBC Section 107.2.1. 3. Sheet A3.1 shows an MSE retaining wall at Grid G/7.3 abutting the exterior wall of the building. The exterior wall construction appears to be wood framing at this location. At a minimum, the end of the wood framing terminates near the face of the retaining wall, placing this material in close proximity with water and retained soils. The wood framing, structural sheathing, and siding and trim shall be constructed of naturally-durable or preservative-treated wood unless sufficient clearance between the retained soils and the wood is specified. Flashing should be provided to protected the wood from water seapage through the retaining wall. See IBC Sections 2304.12.1.2 and 2304.12.1.5. Structural Original Comments: 1. No additional comment. 2. This comment has not been completely addressed. The original comment stated that a redundancy factor of p=1.3 shall be used in the design unless a value of p=1.0 was substantiated by analysis. The response states that the lesser value has been substantiated by the calculations. The analysis has not sufficiently shown that the structure does not have a Type lb Extreme Torsional Irregularity per ASCE 7-10 Table 12.3-1. See Comment 3 for additional information. Revised documentation shall be submitted for review. The structural design shall be revised considering p=1.3 if the structure is determined to have a Type lb irregularity. See IBC Section 1613.1 and ASCE 7-10 Section 12.3.4.2. 3. This comment has not been completely addressed. The original comment requested supplemental documentation substantiating the torsional amplification factor per ASCE 7-10 Section 12.8.4.3. The response states that the structure does not have a torsional irregularity. See IBC Section 1613.1. The following comments shall be addressed: a. The lateral analysis of the concrete structure is not consistent with the structural drawings. For example, the 113-foot wall on Grid G per Sheet S2.1 is represented by a 10-foot wall in the finite element model (FEM), and Grid 8 per Sheet S2.1 includes three shear walls while the includes only one on this Grid. Additional discrepancies in the wall layout, including missing walls, occur between the structural drawings and the FEM. The FEM shall be revised to accurately model all elements of the lateral force resisting system. Note that the analysis indicates the center-of-rigidity is north and slightly west of the center-of-mass; by inspection, the center-of-rigidity should be south and potentially east of the center-of-mass. See ASCE 7-10 Section 12.7.3. b. The model shall include cracked stiffness properties for all concrete elements of the lateral force resisting system per ASCE 7-10 Section 12.7.3 Item (a). If the gravity columns and other non-lateral elements are included in the FEM, they shall similarly be modeled with crack properties. Default properties per ACI 318-14 Section 6.6.3.1.1 unless values are substantiated by an alternative method. Documentation from the FEM O 3200 Cedar Street © 425.257.8800 everettpw@everettwa.gov Everett,WA 98201 425.257.8882 ax everettwa.gov