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Mr. Chris Lermusik <br /> University Mechanical Contractors <br /> Plan Check Number: M1902-054, First Building Review <br /> March 12, 2019 <br /> 1. The ducts for the HVUs shown on Sheets M2.13 and M2.14 penetrate the exterior concrete <br /> wall panels. The ducts appear to be located at openings in the wall panels. Verify that <br /> demolition of the wall panels is not required. If demolition is required, documentation <br /> substantiating the modified panels shall be submitted for review. See IBC Section 107.2.1. <br /> 2. Sheets M2.12 and M2.22 show multiple mechanical units that appear to be suspended from <br /> the structural systems above. The unit weights typically exceed 20 lbs per the equipment <br /> schedules on Sheets M1.01 and M1.02. The following comments shall be addressed: <br /> a. Details for the suspension of the units shall be provide in the construction drawings. <br /> The details shall include lateral bracing. See IBC Sections 107.2.1 and 1603.1 <br /> b. Calculations substantiating the suspension systems shall be submitted for review. The <br /> units shall include lateral bracing designed per the requirements of ASCE 7-10 Section <br /> 13.6. Note that the units do not satisfy Section 13.1.4 Item 6(c) and therefore are not <br /> exempt from this requirement. See IBC Sections 1604.1 and 1613.1. <br /> c. Connections utilizing post-installed concrete anchors shall be provided with special <br /> inspection. Requirements for special inspection shall be specified in the construction <br /> drawings per IBC Table 1705.3 Item 4. See IBC Section 1704.3. <br /> 3. Sheet M2.12 shows unit FCU-1-08 at Grid D.7/2.7. The unit appears to be suspended off <br /> the interior stud wall framing and weights 69 lbs per the equipment schedule on Sheet <br /> M1.01. The following comments shall be addressed: <br /> a. Details for the support of the unit shall be provide in the construction drawings. The <br /> details shall include lateral bracing. See IBC Sections 107.2.1 and 1603.1 <br /> b. Calculations substantiating the support system shall be submitted for review. The <br /> support shall be designed for lateral loading per the requirements of ASCE 7-10 Section <br /> 13.6. Note that the unit does not appear to satisfy Section 13.1.4 Item 6(c) and <br /> therefore is not exempt from this requirement. See IBC Sections 1604.1 and 1613.1. <br /> c. Calculations substantiating the design of the wall framing to support the load shall be <br /> submitted for review. Details modifying the wall framing shall be provided as needed. <br /> See IBC Sections 1603.1 and 1604.1. <br /> 4. Sheet M2.R1 shows multiple EF units on the roof weighing up to 2,200 lbs per the <br /> equipment schedules on Sheets M1.01 and M1.02. Details for the connections of the units <br /> to the roof structure shall be provide in the construction drawings. The units shall be <br /> provided with positive anchorage designed per the requirements of ASCE 7-10 Section 13.6. <br /> Note that the units do not satisfy Section 13.1.4 Item 6(c) and therefore are not exempt <br /> from this requirement. See IBC Sections 107.2.1, 1603.1, and 1613.1. <br /> 5. Sheet M2.R1 shows multiple RV units on the roof. Details for the connections of the units to <br /> the roof structure shall be provide in the construction drawings. The connections shall be <br /> designed per the requirements of ASCE 7-10 Section 13.6. See IBC Sections 107.2.1, <br /> 1603.1, 1604.1, and 1613.1. <br /> o 3200 Cedar Street 0425.257.8800 O everettpw@everettwa.gov <br /> Everett,WA 98201 425.257.8882 fax everettwa.gov <br />