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2015-0639 Pruett addition-proposed ADU 3- Shapiro Arch.pdf City of Edmonds PLAN REVIEW COMMENTS BUILDING DIVISION (425) 771-0220 DATE: November 4, 2015 TO: AD Shapiro Architects Tony Shapiro tonys@adshipiro.com FROM: Chuck Miller, Plans Examiner RE: Plan Check: BLD2015-0639 Project: Pruett addition-proposed ADU nd Project Address: 9011 192 Street SW During a review of the plans by the Building Division for the above noted project, it was found that A complete review cannot be the following information, clarifications, or changes are needed. performed until the revised plans/documents, including a written response indicating where the ‘clouded’ or otherwise highlighted changes can be found on the revised plans, have been submitted to a Permit Coordinator. Items that recur on this list appear in italics. nd Resubmittals must be made at the Development Services Department on the 2 Floor of City Hall. Permit Center hours are M, T, Th, & F from 8am-4:30pm. The Permit Center is closed on Wednesdays. On sheet A 101 – Cover Sheet, Code Notes, Vicinity Map, Project Team: 1.Energy Code Data - Note #8 and #16– Clarify the selected WSEC Table 406.2 option ‘3a’. The existing structure is noted by the Snohomish County Assessor’s office and in the ‘Scope of Work’ – Note #5 – as being heated hydronically. Option ‘3a’ regards furnace “Energy Code: Revised installations. The response to the plan review comment states: building permit application, WSEC Table 406.2 (using options 3a, and 4), and A101 has been updated, to include the heat pump option of the upstairs heating /cooling system.” As noted earlier, option ‘3a’ regards furnace installations, not heat pumps of either the air-source or ground source type covered by other available options. There does not appear to be a proposal to replace an existing furnace or install a new furnace for a ducted system. Option ‘4’ also regards the installation of a furnace to provide the required comfort heat through a ducted distribution system. The furnace and all ductwork are required to be located within the conditioned space. AFUE (Annual Fuel Utilization Efficiency) is a thermal efficiency measure of a combustion appliance, such as the furnace selected under this option, and not an electric heat pump. As with most of the options, the building permit drawings shall specify the option being selected and shall specify the heating equipment type and the minimum equipment efficiency of the primary means of providing the required comfort heat per WSEC Table 406.2. Only option ‘3d’ develops credits for a proposal that benefits only a portion or ‘zone’ of the structure. On sheet A 111 – Main Floor Plan, Window Schedule: 2.Main Floor Plan – Indicate on the plans the required emergency escape and rescue opening from the sleeping room identified as ‘Bedroom 3’ (space 113) that opens directly to a public way, or to a yard or court that leads to a public way per IRC R310.1. The opening represented on the plans submitted prior appears to have been omitted or removed. The “Emergency egress from Bedroom 3, room response to the plan review comment states: No. 113, is thru (sic) the pocket doors to the anti-room (sic) and then thru (sic) the exterior man door to the outside back yard. This is an existing condition which is not being impacted by the construction.” The existing window in the east wall represented on sheets ‘A111’ and ‘A201’ of the submittal received on May 22, 2015 is also an existing condition, and meets the requirements of IRC R310.1 by opening directly to the exterior. There is no provision for allowing the required emergency escape and rescue opening to be accessed through an adjacent room or space, or approval to remove the existing window providing the required egress. On sheet S-2 – Upper Floor – and sheet S-3 - Roof Level: 3.Clarify the required minimum 6x12 ‘existing beam to be verified’ used to support the loads over the east and west walls of the ‘Kitchen’. Using the same loads as those applied to beams ‘B2-3’ and ‘B2-3’ in the provided structural calculations, the 6x12s appear to be “Please over spanned and fail in bending. The response to the plan review comment states: see attached calculations. 6x12 beam is adequate.” The beam calculations provided in response to the review comment do not appear to account for the eave/overhang of the roof or the dead load from the exterior wall above the beams. Page 2 of 2