3315 SEAWAY BLVD 2020-06-05 - Laserfiche WebLink

., RtAboire.divf s Y® a (dm e T . • cai-erg 1 UNIVERSITY `F‘stct—. Xevr-jto "'e'er'. x✓ra D OD': MECHANICAL CONTRACTORS, INC. We Build Value 4/3/19 City of Everett Public Works Department 3200 Cedar Street Everett,WA 98201 Attn: Mr. Drew Martin P.E,S.E. RE: Mechanical Permit Plan Check M1902-054 Response Dear Mr. Martin, We have received your letter requesting additional information about the mechanical permit application for Terra Power Phase 3&4. A response to each of the items is listed below. 1. The ducts for the HVUs shown on Sheets M2.13 and M2.14 penetrate the exterior concrete wall panels. The ducts appear to be located at openings in the wall panels. Verify that demolition of the wall panels is not required. If demolition is required, documentation substantiating the modified panels shall be submitted for review. See IBC Section 107.2.1. Response:The supply and return air ducts from the Heat/Vent Units do not penetrate concrete. The building has several existing roll up doors that approximately 10'tall and 9'wide. At each of the Heat/Vent Unit locations a roll up door is being removed and a storefront system is replacing the door. There will be extruded aluminum storefront framed around the ducts with metal infill panels. -.>A( 4 40 0 S 7 6.4E44 Y Cove. trefAere 12..sdrs,oTf1F4 r .)-4et > 2. Sheets M2.12 and M2.22 show multiple mechanical units that appear to be suspended from the structural systems above. The unit weights typically exceed 20 lbs per the equipment schedules on Sheets M1.01 and M1.02. The following comments shall be addressed: a. Details for the suspension of the units shall be provide in the construction drawings. The details shall include lateral bracing. See IBC Sections 107.2.1 and 1603.1 b. Calculations substantiating the suspension systems shall be submitted for review. The units shall include lateral bracing designed per the requirements of ASCE 7-10 Section 13.6. Note that the units do not satisfy Section 13.1.4 Item 6(c) and therefore are not exempt from this requirement. See IBC Sections 1604.1 and 1613.1. c. Connections utilizing post-installed concrete anchors shall be provided with special inspection. Requirements for special inspection shall be specified in the construction drawings per IBC Table 1705.3 Item 4. See IBC Section 1704.3. Response: Enclosed are submittal documents with calculations prepared by ISAT for the equipment suspension.The calculations have a PE stamp. University Mechanical cannot physically add the sheets to our drawings for liability purposes.