5208 S 2ND AVE 2021-07-13 - Laserfiche WebLink

Ms. Joanne Coghlan Plan Check Number: B2003-040, First Building Review April 8, 2020 4. The bridge is connected to the existing building with an isolation joint per Detail 3/S3.1. The joint appears to provide a minimal gap per Detail E2 of the bridge drawings. Calculations substantiating the minimum required gap should be submitted for review. See IBC Section 1613.1 and ASCE 7-10 Section 12.12.3. Bridge 1. Structural special inspections are required for this project. See additional comments above in the"Structural" section of this letter for additional information. A statement of special inspections should be provided in the bridge drawings unless they are included in the S-series drawings. Where the inspection requirements are included in the S-series drawings, a reference to the requirements should be provided. The bridge EOR should coordinate with the abutment EOR to verify that the required inspections are listed. See IBC Sections 107.1, 1704.2.3 and 1704.3. 2. The Elevation on Sheet 2-of-3 specifies a bridge span and angle of 41 feet and 4.7 degrees, resulting in a rise of approximately 40 inches. The bridge is fundamentally a ramp and limited to a rise of 30 inches between landings per IBC Section 1012.4. The bridge should be revised to provide an intermediate landing or limit the rise over its length to 30 inches. Landings should comply with IBC Section 1012.6. 3. The bridge is connected to the existing building with an isolation joint per Detail 3/S3.1. See additional comments above in the "Structural" section of this letter for additional information. The minimum required gap should be specified in the detail. See IBC Section 1613.1 and ASCE 7-10 Section 12.12.3. 4. The bridge Section on Sheet 2-of-3 specifies 0.5-inch diameter horizontal guard rails at a 4.5- inch spacing. The guard rails are required to be spaced to prevent passage of a 4-inch sphere. The provided gap between the rails equals this spacing and should be reduced. See IBC Section 1015.4. 5. The bridge Section on Sheet 2-of-3 includes rails located 3.5 inches above the deck surface. The first rails should be located 4 inches abovethe surface. In addition, the section should specify that the deck extend under the rails to prevent a horizontal gap between these elements. See IBC Section 1012.10.1. 6. The bridge Section on Sheet 2-of-3 should specify that the FRP deck incudes a non-slip surface. See IBC Section 1012.7.1. O3200 Cedar Street /"D 425.257.8810 0 everetteps@everettwa.gov Everett,WA 98201 �J 425.257.8857 fax everettwa.gov/permits Page3of4