1502 HEWITT AVE 2019-03-27 - Laserfiche WebLink

• MIME WNW 15. Plan 1/AF1.1 shows a new GL5-1/8x16-1/2 beam spanning parallel with the existing joists. The purpose of and loading conditions on the beam are not clear. The beam does not appear to be included in the structural calculation package. Documentation substantiating its design should be submitted for review. See IBC Section 1604.1. DCI Response: See updated framing at the mezzanine in the updated drawings. 16. The elevator shaft appears to require headers for the door openings at all levels. Plans 2/AF1.1, 1/AF1.1, and 2/AF1.1 should be revised to include headers. Calculations substantiating the design of the headers should be submitted for review. See IBC Sections 1603.1, 1604.1, and 2304.3.2. DCI Response: The elevator addition has been removed from this project so these beams are no longer needed. 17. The design appears to require jamb studs at multiple locations to support beams. Locations include, but are not limited to, the elevator headers and the GL 3-1/8 in Plan 1/AF1.1.A detail should be added to the drawings. See IBC Section 1603.1. DCI Response: The mezzanine plan has been revised,these beams are no longer needed so the jamb studs are likewise not needed. 18. Plan 1/AF1.1 shows new GL5-1/8x12 headers that appear vertically-aligned under the existing floor sheathing to support the new 2x12 joists with face-mounted connections. It appears that similar connections will be required for the existing joists on the opposite face. The structural design should be reviewed and revised as needed. See IBC Section 1603.1. DCI Response: The mezzanine level landing at the elevator has been removed from this project. 19. Details and calculations should be provided for multiple framing connections to substantiated their design. See IBC Section 107.2.1 and 1604.1. Connections requiring additional documentation include, but are not limited to, the following: a. Plan 1/AF1.1: GL5-1/8x12 to wall framing and existing post. b. Plan 1/AF1.1: GL5-1/8x16-1/2 to existing exterior and interior walls. C. Plan 2/AF1.1: GL5-1/8x16-1/2 to existing exterior wall and existing beams. DCI Response: The framing scheme has changed such that there are no new connections to existing columns or exterior walls.The connections of the new stringers to the second level framing is shown in detail 6/AF1.1 and calculation sheet S4. 20.Detail 5/AF1.0 shows details for the connection of the elevation shaft to the existing roof framing. See IBC Sections 107.2.1 and 1603.1. The following comments should be addressed: a. The detail appears to indicate the existing joists are oriented in the north-south direction. However, based on the second-floor framing, it appears likely that the joists span east- west. The orientation should be verified and the connections on the north and south walls _ , revised as needed.