5901 23RD DR W PROVIDENCE 2023-05-22

• • Drew Martin From: Drew Martin Sent: Thursday, October 27, 2022 9:18 AM To: Scott Ablitt Subject: City of Everett Permit Services: 5901 23rd Wet, Suite 105 (M2208-045) - Second Building Review Hello,Scott. We have completed the second review of the building plans for this project. Multiple comments have not been sufficiently addressed and require additional action. Additional comments have also been included based the review of the revised drawings. This email will serve as the review letter. Two copies of revised documents should be submitted for review, including an itemized response letter. The comments below have been itemized for consistency with the original comments. Comments 4. Structural drawings providing details have not been included as required. The following comments should be addressed: a. The 8.5x11 page in the structural calculations is not sufficient. Full size sheets matching the mechanical sheets should be provided. b. The page in the structural calculations does not provide details for the support of suspended equipment as required. Independent vertical and lateral support is required for all suspended equipment exceeding 20 pounds. See IBC Sections 1604.1 and 1613.1, and ASCE 7-16 Chapter 13. 4a. Continuing with the previous comment,the interior equipment appears to be both suspended from and mounted on interior wall-ceiling structures that are presumed to be constructed of light-framed walls with GWB sheathing. It is not clear if these structures have sufficient capacity to support the proposed equipment. In addition, these structures likely lack adequate lateral strength for the induced seismic loads. Note that it is not clear how many levels are occurring inside the building. Based on the drawings and photography of the building, it appears there are two levels in the area where the units are being installed. The following comments should be addressed: a. The gravity and lateral framing supporting the units should be specified in the drawings. b. Calculations substantiating the vertical and lateral load paths should be submitted for review. c. Additional structural reinforcement of the interior structures may be required. This will require a separate building permit application to be submitted for review. All structural work should be shown in this submittal if required. 5. The engineer's response that the reinforcement is spaced at least 18 inches is not correct. This is the common spacing for temperature reinforcement used in foundations and slabs-on-grade. Typical tilt-up buildings are required to comply with the standard and seismic reinforcement detailing requirements of ACI 318 based on the type of lateral system (i.e.,ordinary or special reinforced concrete walls). The engineer should re-evaluate the building as needed. As stated in previous comments,full-size construction drawings should be submitted with clear construction-level details. Per comment 4a, if a building permit application is required, all structural modifications should be included in this drawing set, not the mechanical drawing set. 6. Fan EF-1 weighs 136 pounds and will be mounted overhead, representing a significant falling hazard. Support details capable of resisting vertical and lateral loading should be included in the drawings. The supports should be designed per ACSE 7-16 Chapter 13.