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HomeMy WebLinkAboutENGINEERING LETTER - 21-00216 - Valley Agronomics - Maintenance Shop124 Kirby Dr Version 2019.02.19 (2/25/19) 1050 North Watery Lane Ph: (435) 919-3100 Portland, TN 37148 Brigham City, UT 84302 Fax: (435) 919-3101 Ph: (615) 325-4165 Fax: (800) 231-3460 Steel Design LLC Project Name:Valley Ag Expandable End Wall R1 4409 Haroldsen Drive Buildings: Idaho Falls, ID 83401 Attn.:Brian Christensen Project Location:Idaho Falls, ID 83401 NBS Project #:U19M0989A This Letter of Design Certification ensures that the materials supplied by Nucor Building Systems are designed in accordance with the information specified to Nucor Building Systems on the order documents and summarized by the loading information listed below. The Project Engineer of Record (not NBS) is responsible for verifying that the building code and design loads meet any and all applicable local requirements. The Professional Engineer whose seal appears on this Letter of Certification is employed by Nucor Building Systems, a Member of MBMA, and does not serve as or represent the Engineer of Record for this project and shall not be construed as such. DESIGN LOAD CRITERIA: Structural Loads Applied in General Accordance with: IBC 2015 Risk Category:II - Standard Buildings PROJECT-WIDE LOADING INFORMATION: Ground Snow Load: 50.0 psf Snow Exposure Factor,Ce: 1.00 Snow Imp. Factor, Is: 1.00 Roof Live Load: 20.0 psf Reducible As Per Code. Ultimate Design Wind Velocity: 115 mph Nominal Design Wind Velocity: 89 mph ***Components & Cladding Pressures: 27 psf/ -37 psf Is Roof to meet UL 90 Requirements?: No Wind Exposure: C Seismic Criteria: Ss: 0.538 S1: 0.171 • 20% of flat roof snow included in seismic calc's. Design Sds / Sd1: 0.491/0.241 Analysis Procedure: Equiv. Lat. Force Procedure Seis. Imp. Factor, Ie: 1.00 Basic SFRS: Ord. Steel Mom. Frames & Seis. Design Category: D Site Class: D Ord. Steel Conc.-Br. Frames BUILDING-SPECIFIC LOADING INFORMATION: Roof Dead Bldg (psf)* Pri (psf) Sec (psf) Ct Cs Ps (psf) **Pm (psf) Enclosure GCpi R Cs V (kips) A 3.75 5.0 5.0 1.0 1.00 35.00 20.00 Enclosed ± 0.18 3.25 0.151 47.08 *Primary Structural Not Included Mezzanine Information: Floor Dead Load: N/A Floor Collateral Load: N/A Floor Live Load: N/A Crane Information: No cranes on building. Roof-Top Unit Information No roof-top units on building. The design of structural members supporting roof gravity loads is controlled by the more critical effect of roof live load or roof snow applied in accordance with the governing building code. DESIGN STANDARDS REFERENCED: • AISC Specification for Structural Steel Buildings - Steel Construction Manual, 14th Edition, © 2010. • AISI North-American Specification for the Design of Cold-Formed Steel Structures, © 2012 Edition. • IBC codes are designed in accordance with ASCE7-10 Edition. • MBMA Low Rise Building Systems Manual, Latest Edition. • AWS Latest Edition of Structural Welding Code. • No buyout structural components provided on this project. **Pm is based on the minimum roof snow load calculated per building code or the contract-specified roof snow load, whichever is greater. This value, Pm, is only applied in combination with Dead and Collateral Loads. Roof Snow in other loading conditions is determined per the specified Building Code. ***Design wind pressures to be used for wall exterior component and cladding materials not provided by Nucor Building Systems. November 25, 2019 A->100'-0"x120'-0"x18'-4"(RCG,1.0:12) Excellence from the ground up Collateral Dead Wind SeismicSnow Coefficient Snow Load (psf) Professional Seal12/04/2019