3323 HOYT AVE C D 2020-06-17 - Laserfiche WebLink

Page 5 of 9 1 .The foundation plan on Sheet S-3.0 indicates the 8-foot tall foundation wall per Section 8/S- 3.1 is the typical condition. The following comments should be addressed: iiar-The architectural elevations on Sheet 1-of-10 indicate the retained soil depth is less than one-half the first story height of 8 feet. Documentation verifying the retained soil depths for the project should be submitted for review. See IBC Section 107.2.1. Response; Further detail on the necessary retained height has been provided by the client and the plans have been updated. Additionally, the engineer has been informed the architectural drawings will be updated to better reflect anticipated conditions. C) The structural calculations for the 8-foot wall on page 26 appear to consider active soil pressures on the wall. The wall extends to and is restrained by the Main Level floor diaphragm. Calculations substantiating the design considering restrained-condition soil pressures shall be submitted for review. A minimum value of 60 pcf shall be used in the design unless a lower value is specified by the geotechnical engineer. See IBC Section 1610.1 and Table 1610.1. Response; Per the structural detailing and Architectural elevations the concrete wall does not extend to the floor framing and is not pinned at the top. Per IBC section 1610.1 and table 1610.1 the wall was designed for an Active soil pressure of 30 pcf utilizing an equivalent fluid pressure analysis. Supplemental clarification was provided on the detail and supplemental calculations are attached for your convenience. aefl-ie Wall Footing Schedule on Sheet S-3.0 specifies footing depths below-grade of 1 foot for both FW2- and FW3-type footings. The schedule shall clarify if this is measured to the top or bottom of the footing. If measured to the bottom of footing, the depth shall be increase to 18 inches. See IBC Section 1809.5 Item 5. Response; The table has been updated and clarifications have been provided to the table and construction details that 18-inch minimum depth required to bottom of footing. 1.4 . I he foundation plan on Sheet S-3.0 references Detail 6/S3.1 showing a thickened slab-on- grade at the posts. The slab is identified as"by others"in Note 2/5-3.0, and is therefore not include in the design. The footing should be revised as an isolated footing. See IBC Section 107.2.1. Response: T itle to this detail has been revised per your requested clarifications i%' The foundation plan includes strip footings for the shear walls at Grit Oand - . Calculations substantiating the design of the footings to resist loads fr the ear walls shall be submitted for review. The calculations shall demonstrate th the ►stings provide adequate strength and resistance to transfer overturning forces fro t • shear walls. See IBC Section 1604.1 and 1604.4. Response: Jru e 4/4/4.-s 7 There are no Shearwalls at the locations you have identified. 817 Metcalf Street, Suite 207 Office: 360.855.2333 Ext. 207 Sedro-Woolley,WA 98284 Cell: 360.982.0928