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HomeMy WebLinkAboutLA219133 - APPROVED - PP Permit Pack 9663 Shimelis Dadi Stamped flatConcept Approval ONLYSubject to Field Inspection Inspector Date 2015 MN Bldg Code 10/18/2023jnuetzman The high-powered, smart grid-ready IQ7X Microinverter installation process while achieving the highest Part of the Enphase Energy System, the IQ7X Microinverter integrates with the IQ Gateway, IQ Battery, and the Enphase Installer App monitoring The IQ Series Microinverters extend the reliability IQ7X Microinverter To learn more about Enphase offerings, visit enphase.com Data Sheet Enphase Microinverters Region: AMERICAS Easy to Install •Lightweight and simple • Faster installation with improved, lighter two-wire cabling • Built-in rapid shutdown compliant (NEC 2014, 2017 & 2020) • Optimized for high powered 96-cell* modules • More than a million hours of testing • Class II double-insulated enclosure •UL listed • Complies with advanced grid support, voltage and frequency ride-through requirements grid requirements rd IQ7X-DS-0099-EN-US-12-27-2022 at To learn more about Enphase offerings, visit enphase.com INPUT DATA (DC) IQ7X-96-2-US Commonly used module pairings¹ Module compatibility Operating range 10A Overvoltage class DC port II 0A OUTPUT DATA (AC)@ 240VAC @ 208VAC Nominal frequency 60 Hz Overvoltage class AC port III EFFICIENCY @240VAC @208VAC MECHANICAL DATA Ambient temperature range -40ºC to +60ºC Connector type (IQ7X-96-2-US) Cooling Natural convection - No fans Approved for wet locations Yes Enclosure Class II double-insulated, corrosion resistant polymeric enclosure FEATURES Communication Monitoring Enphase Installer App and monitoring options Compatible with IQ Gateway Disconnecting means Compliance rd IQ7X Microinverter IQ7X-DS-0099-EN-US-12-27-2022 The Enphase Q Cable™ and accessories are part of the latest generation Enphase IQ System™. These accessories provide simplicity, reliability, and faster installation times. Enphase Q Cable Accessories To learn more about Enphase offerings, visit enphase.com Data Sheet Enphase Q Cable Accessories REGION: Americas Enphase Q Cable • Two-wire, double-insulated Enphase Q Cable is 50% lighter than the previous generation Enphase cable • New cable numbering and plug and play connectors speed up installation and simplify wire management • Link connectors eliminate cable waste Field-Wireable Connectors • Easily connect Q cables on the roof without complex wiring • Make connections from any open connector and center feed any section of cable within branch limits • Available in male and female connector types To learn more about Enphase offerings, visit enphase.com © 2020 Enphase Energy. All rights reserved. Enphase, the Enphase logo, Enphase IQ 7A, Enphase IQ Battery, Enphase Enlighten, Enphase IQ Envoy, and other trademarks or service names are the trademarks of Enphase Energy, Inc. Data subject to change. 2020-06-26 CONDUCTOR SPECIFICATIONS UL3003 (raw cable), UL 9703 (cable assemblies), DG cable Flame test rating FT4 Compliance RoHS, OIL RES I, CE, UV Resistant, combined UL for Canada and United States Conductor type THHN/THWN-2 dry/wet Disconnecting means The AC and DC bulkhead connectors have been evaluated and approved by UL for use as the load-break disconnect required by NEC 690. Q CABLE TYPES / ORDERING OPTIONS Connectorized Models Size / Max Nominal Voltage Connector Spacing PV Module Orientation Connector Count per Box Q-12-10-240 12 AWG / 277 VAC 1.3 m (4.2 ft) Portrait 240 Q-12-17-240 12 AWG / 277 VAC 2.0 m (6.5 ft) Landscape (60-cell) 240 Q-12-20-200 12 AWG / 277 VAC 2.3 m (7.5 ft) Landscape (72-cell) 200 ENPHASE Q CABLE ACCESSORIES Name Model Number Description Raw Q Cable Q-12-RAW-300 300 meters of 12 AWG cable with no connectors Field-wireable connector (male)Q-CONN-10M Make connections from any open connector Field-wireable connector (female)Q-CONN-10F Make connections from any Q Cable open connector Cable Clip Q-CLIP-100 Used to fasten cabling to the racking or to secure looped cabling Disconnect tool Q-DISC-10 Disconnect tool for Q Cable connectors, DC connectors, and AC module mount Q Cable sealing caps (female)Q-SEAL-10 One needed to cover each unused connector on the cabling Terminator Q-TERM-10 Terminator cap for unused cable ends Enphase EN4 to MC4 adaptor¹ECA-EN4-S22 Connect PV module using MC4 connectors to IQ micros with EN4 (TE PV4-S SOLARLOK). 150mm/5.9” to MC4. Enphase EN4 non-terminated adaptor¹ECA-EN4-FW non-terminated cable. 150mm/5.9” Enphase EN4 to MC4 adaptor (long)¹ECA-EN4-S22-L Longer adapter cable for EN4 (TE PV4-S SOLARLOK) to MC4. Use with split cell modules or PV modules with short DC cable. 600mm/23.6” Replacement DC Adaptor (MC4)Q-DCC-2 DC adaptor to MC4 (max voltage 100 VDC) Replacement DC Adaptor (UTX)Q-DCC-5 DC adaptor to UTX (max voltage 100 VDC) 1. Enphase Q Cable Accessories TERMINATOR Terminator cap for unused cable ends, sold in packs of ten (Q-TERM-10) SEALING CAPS Sealing caps for unused aggregator and cable connections (Q-BA-CAP-10 and Q-SEAL-10) DISCONNECT TOOL Plan to use at least one per installation, sold in packs of ten (Q-DISC-10) CABLE CLIP Used to fasten cabling to the racking or to secure looped cabling, sold in packs of one hundred (Q-CLIP-100) Gross Automation (877) 268-3700 · www.carlonsales.com · sales@grossautomation.com ___________________________________________________________________________________________ Domus Structural Engineering, LLC P.O. Box 560 Broomfield, CO 80038 530-864-7055 projects@domusstruc.com To: Blue Raven Solar 1403 North Research Way, Building J Orem, UT. 84097 Subject: Certification Letter Dadi Residence 17260 Glencoe Ave Lakeville, MN. 55044 To Whom It May Concern, Design Criteria: භ Applicable Codes = 2018 IBC/IRC, ASCE 7-16 භ Roof Dead Load = 7 psf (MP1) භ Roof Live Load = 20 psf භ Wind Speed = 115 mph (Vult), Exposure C භ භ Sincerely, John Calvert, P.E. Project Engineer October 17, 2023 The roof structure of (MP1) consists of composition shingle on roof plywood that is supported by pre-manufactured trusses that are spaced at @ 24"o.c.. The top chords, sloped at 27 degrees, are 2x4 sections, the bottom chords are 2x4 sections and the web members are 2x4 sections. The truss members are connected by steel gusset plates. The max unsupported projected horizontal top chord span is approximately 6'-9''. The existing roof framing system of (MP1) is judged to be adequate to withstand the loading imposed by the installation of the solar panels. No reinforcement is necessary. Ground Snow Load = 50 psf - Roof Snow Load = 35 psf The spacing of the solar standoffs should be kept at 48" o.c. for landscape and 24" o.c. for portrait orientation, with a staggered pattern to ensure proper distribution of loads. A jobsite observation of the condition of the existing framing system was performed by an audit team of Blue Raven Solar as a request from Domus Structural Engineering. All review is based on these observations and the design criteria listed below and only deemed valid if provided information is true and accurate. On the above referenced project, the roof structural framing has been reviewed for additional loading due to the installation of the solar PV addition to the roof. The structural review only applies to the section of the roof that is directly supporting the solar PV system and its supporting elements. The observed roof framing is described below. If field conditions differ, contractor to notify engineer prior to starting construction. The scope of this report is strictly limited to an evaluation of the fastener attachment, underlying framing and supporting structure only. The attachment's to the existing structure are required to be in a staggered pattern to ensure proper distribution of loading. All panels, racking and hardware shall be installed per manufacturer specifications and within specified design limitations. All waterproofing shall be provided by the manufacturer. Domus Structural Engineering assumes no responsibility for misuse or improper installation of the solar PV panels or racking. Please contact me with any further questions or concerns regarding this project. Note: Seismic check is not required since Ss<.4g and Seismic Design Category (SDC) < B Attachment: 1 - 5/16 dia. lag screw with 2.5 inch min. embedment depth, at spacing shown above. I hereby certify that this plan, specification or report was prepared by me or under my direct supervision and that I am a duly Licensed Professional Engineer under the laws of the State of Minnesota.John A. Calvert, License No. 52823 Expiration Date: 30-June-2024 Dadi Lakeville MN 1 Digitally signed by John A. Calvert Date: 2023.10.17 11:50:16 -06'00' ___________________________________________________________________________________________ Domus Structural Engineering, LLC P.O. Box 560 Broomfield, CO 80038 530-864-7055 projects@domusstruc.com 50.0 psf (ASCE7 - Eq 7-1) 1 (ASCE7 - Table 7-2) 1 (ASCE7 - Table 7-3) 1 35.0 psf (ASCE7 - Eq 7-2) 1 35.0 psf 3.37 psf 3.0 psf 2.00 ft 6.08 ft 12.17 sft 37 lb 4.00 2.00 0.73 0.00 (Ceiling Not Vaulted) 0.27 7.0 psf 7.9 psf Gravity Loading PV System Weight Weight of PV System (Per Blue Raven Solar) X Standoff Spacing = Y Standoff Spacing = Note: PV standoffs are staggered to ensure proper distribution of loading 2x4 Top Chords @ 24"o.c. I = Importance Factor = Cs = Slope Factor = Standoff Tributary Area = ps = Cspf ps = Sloped Roof Snow Load = pf = Flat Roof Snow Load = DL Adjusted to 27 Degree Slope Roof Snow Load Calculations pg = Ground Snow Load = Ce = Exposure Factor = pf = 0.7 Ce Ct I pg Ct = Thermal Factor = Roof Live Load = 20 psf Roof Plywood Roof Dead Load (MP1) Composition Shingle Note: Roof live load is removed in area's covered by PV array. DL Adjusted to 27 Degree Slope Point Loads of Standoffs Miscellaneous Vaulted Ceiling Total Roof DL (MP1) PV Dead Load = 3 psf (Per Blue Raven Solar) Dadi Lakeville MN 2 ___________________________________________________________________________________________ Domus Structural Engineering, LLC P.O. Box 560 Broomfield, CO 80038 530-864-7055 projects@domusstruc.com 115 mph C Gable Roof 27 degrees 20 ft 21.3 ft 0 ft (Eq. 26.10-1) 0.90 (Table 30.3-1) 1.00 (Fig. 26.8-1) 0.85 (Table 26.6-1) 1.00 115 mph (Fig. 26.5-1A) II (Table 1.5-1) qh = 25.95 Zone 1 Zone 2 Zone 3 Positive ya =0.77 0.80 0.80 0.77 GCp =-1.50 -2.50 -3.59 0.52 (Fig. 30.3) Uplift Pressure =-30.0 psf -51.9 psf -74.5 psf 10.3 psf (Eq. 29.4-7) ASD Uplift Pressure =-18.0 psf -31.1 psf -44.7 psf 9.6 psf X Standoff Spacing = 2.00 2.00 1.33 Y Standoff Spacing = 6.08 3.04166667 3.04166667 Tributary Area = 12.17 6.08 4.06 Dead Load on attachment = 37 lb 18 lb 12 lb Footing Uplift (0.6D+0.6W) = -197 lb -179 lb -174 lb Zone 1 Zone 2 Zone 3 Positive ya =0.75 0.80 0.80 0.75 GCp =-1.50 -2.50 -3.49 0.50 (Fig. 30.3) Uplift Pressure =-29.2 psf -51.9 psf -72.5 psf 9.8 psf (Eq. 29.4-7) ASD Uplift Pressure (0.6W)=-17.5 psf -31.1 psf -43.5 psf 9.6 psf X Standoff Spacing = 4.00 4.00 2.67 Y Standoff Spacing = 3.50 1.75 1.75 Tributary Area = 14.00 7.00 4.67 Dead Load on attachment = 42.00 21.00 14.00 Footing Uplift (0.6D+0.6W) = -220 lb -205 lb -195 lb -220 lb 450 lb Therefore, OK Fastener =1 - 5/16" dia. lag Number of Fasteners = 1 Embedment Depth = 2.5 Pullout Capacity Per Inch = 250 lb Fastener Capacity = 625 lb w/ F.S. of 1.5 & DOL of 1.6= 667 lb Therefore, OK Fastener Capacity Check Mean Roof Height Ground Elevation Kd (Wind Directionality Factor) = 667.2 lb capacity > 220 lb demand Ke (Ground Elevation Factor) = V (Design Wind Speed) = Risk Category = Standoff Uplift Calculations-Portrait Standoff Uplift Calculations-Landscape Standoff Uplift Check Standoff Uplift Capacity = 450 lb capacity > 220 lb demand Wind Calculations Maximum Design Uplift = Design Wind Pressure Calculations qh = 0.00256 * Kz * Kzt * Kd * Ke * V^2 Kz (Exposure Coefficient) = Kzt (topographic factor) = Wind Speed Exposure Category Roof Shape Roof Slope Effective Wind Area Per ASCE 7-16 Components and Cladding Input Variables Dadi Lakeville MN 3 ___________________________________________________________________________________________ Domus Structural Engineering, LLC P.O. Box 560 Broomfield, CO 80038 530-864-7055 projects@domusstruc.com (MP1)PASS Dead Load 7.9 psf PV Load 3.4 psf Snow Load 35.0 psf Governing Load Combo = DL + SL Total Load 46.2 psf Fb (psi) = f'b x Cd x Cf x Cr (NDS Table 4.3.1) 1650 x 1.15 x 1 x 1.15 Allowed Bending Stress = 2182.1 psi (wL^2) / 8 = 526.5118 ft# = 6318.142 in# Actual Bending Stress = (Maximum Moment) / S = 2063.1 psi L/180 (E = 1500000 psi Per NDS) = 0.45 in Deflection Criteria Based on = (w*L^4) / (185*E*I) = = L/364 > L/180 Therefore OK Allowed Deflection (Live Load) =L/240 0.337 in (w*L^4) / (185*E*I) L/480 > L/240 Therefore OK Member Area = Fv (psi) = 135 psi (NDS Table 4A) Allowed Shear = Fv * A = Max Shear (V) = w * L / 2 = 312 lb Framing Check 5.3 in^2 Check Shear w = 92 plf 2x4 Top Chords @ 24"o.c. Member Span = 6' - 9" 709 lb Allowed > Actual -- 44.1% Stressed -- Therefore, OK 1650Fb/1.5E Member Spacing @ 24"o.c. Maximum Moment = Check Deflection I (in^4) 5.36 Lumber Sp/Gr Actual Deflection (Live Load) = Allowed Deflection (Total Load) = Actual Deflection (Total Load) = Allowed > Actual -- 94.6% Stressed -- Therefore, OK Member Properties Member Size 2x4 S (in^3) 3.06 0.169 in Continuous Span 0.223 in Check Bending Stress (True Dimensions) Dadi Lakeville MN 4 ___________________________________________________________________________________________ Domus Structural Engineering, LLC P.O. Box 560 Broomfield, CO 80038 530-864-7055 projects@domusstruc.com Appendix A: General Notes GENERAL Ɣ The contractor shall verify all dimensions, property setbacks, AHJ/HOA CC&R's, elevations and site conditions before starting work and shall notify Domus Structural Engineering, LLC of any discrepancies. Ɣ All report conclusions represent Domus Structural Engineering, LLC's best professional judgment based upon industry standards. Ɣ Resolve any conflicts on the drawings with Domus Structural Engineering, LLC before proceeding with construction. Ɣ The design criteria used for this project & listed on the first page of the report is based on the engineers best judgement and/or provided by the ATC council. AHJ specific requests may differ. Please contact our team if the design criteria needs to be modified. Ɣ A site visit was not physically conducted by Domus Structural Engineering, LLC. The accompanying calculations and certification are provided with the understanding that the site building and construction standards meet an acceptable level of industry standards. It shall be the contractors responsibility to identify any irregularities such as inconsistent framing conditions, water damage, fire damage, cracked, split or noticeably deflecting framing members. Ɣ Domus Structural Engineering, LLC is not responsible for enforcing safety measures or regulations. The contractor shall design, construct, and maintain all safety devices including shoring and bracing, and shall be solely responsible for conforming to all local, state and federal safety and health standards, laws and regulations. The contractor shall take necessary precautions to maintain and insure the integrity of the structure during construction. If a lawsuit is filed by one of the contractor's or subcontractor's employees, or any one else, the contractor will indemnify, defend and hold the owner and Domus Structural Engineering, LLC harmless of any and all such claims. Ɣ Any and all waterproofing shall be provided by the contractor. Domus Structural Engineering, LLC is not responsible for waterproofing. Ɣ All hardware shall be installed per manufacturer specifications and within specified design limitations. Domus Structural Engineering, LLC assumes no responsibility for incorrectly installed hardware or hardware installed outside of the manfacturer specifications. USER RELIANCE Ɣ Domus Structural Engineering, LLC was engaged by Blue Raven Solar (Client) to perform this assessment. This report and the information therein, are for the exclusive use of the Client. This report has no other purpose and shall not be relied upon, or used, by any other person or entity without the written consent of Dous Structural Engineering, LLC. Third parties that obtain this report, or the information within shall have no rights of recourse or recovery against Domus Structural Engineering, LLC, it’s officers or employees. ROOF MOUNTED ARRAYS Ɣ If an analysis of a supporting stucture is included in our scope of work, the structural assessment only applies to the section of the roof that is directly supporting the proposed solar PV system. Ɣ No structural members can be cut for conduit, etc., unless specifically shown. Obtain prior written approval for installation of any additional conduit, etc. Ɣ It is assumed that a standard quality of construction care was used to construct the original building. It shall be the contractors responsibility to field verify any and all framing member supporting the proposed PV array are in adequate condition. The contractor shall field inspect for sub-standard construction means, signs of dry rot, mold, fire damage, etc. and notify engineer if any compromised material is found on site prior to starting construction. Ɣ It is assumed that there have been no additional loads (HVAC or MEP equipment, additional layers of roofing, etc) added to the building over the course of the structures histroy. The contractor and/or client shall verify this with the property owner and notify Domus Structural Engineering, LLC if additional load has been added to the structure already. Ɣ Flexible utility connections must be used at any building seismic joint. Ɣ Care should be taken to ensure that PV arrays do not preclude drainage of rain water. Ɣ Unless otherwise noted, construction material shall be evenly distributed if placed on framed floors or roofs. Loads shall not exceed the allowable loading for the supporting members and their connections. Ɣ All lags or wood screws at the roof shall be stainless steel and installed withing the middle 1/3 of the dimensional width of the framing members. Ɣ All fasteners shall be a minimum of 6" away from any truss panel or hinge joints, truss plates and/or member ends. Field verify location of fasteners prior to starting construction. All fasteners shall be pre-drilled to avoid splitting existing lumber. Ɣ Domus Structural Engineering, LLC is not responsible for downslope effects of snow shedding or sliding off of the PV array nor any damage to downslope decks, roofs, walkways, landscaping, automobiles, pets, people, etc.. If snow guards are requested by the customer, notify Domus Structural Engineering, LLC. Dadi Lakeville MN 5