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HomeMy WebLinkAboutLetter from Truss Engineer 02.24.2017MiTek® Re: ML12814 THE SHARP RES MiTek USA, Inc. 7777 Greenback Lane Suite 109 Citrus Heights, CA, 95610 Telephone 916/676-1900 Fax 916/676-1909 The truss drawing(s) referenced below have been prepared by MiTek USA, Inc. under my direct supervision based on the parameters provided by Overholt-Delta,Co. Pages or sheets covered by this seal: R49805573 thru R49805574 My license renewal date for the state of Colorado is October 31, 2017. February 24,2017 Hernandez, Marcos IMPORTANT NOTE: Truss Engineer's responsibility is solely for design of individual trusses based upon design parameters shown on referenced truss drawings. Parameters have not been verified as appropriate for any use. Any location identification specified is for file reference only and has not been used in preparing design. Suitability of truss designs for any particular building is the responsibility of the building designer, not the Truss Engineer, per ANSI/TPI-1, Chapter 2. Job Truss 'TrU Type ML12814 T3 Roo Special Overholt Truss, Delta. Co 81416 -3-0-0 1 5410 5-5-10 3-0-0 10-7.12 5-2-2 15.8.14 5-2-2 3/4" PLYWOOD OR OSB GUSSET (23/32" RATED SHF..A—HING 48/24 EXP 1) 500 112 36" X 18" 10x10 39" X 42" 2x4 11 5 a if 4x4 �- •��►S 18 :��•� 19 `•• 2.50 112 4x4 8x12 Qty 3 ty THE SHARP RES Job Reference (optional) R49805573 8.010 s Apr 20 2016 MiTek Industries, Inc, Wed Feb 22 16:50:27 2017 Page 1 ID:PDRrnSINSY13ggPelxxhEmyd3zH-KLcEMBYBHydUp11 HISOVypakCifquLlYYivHgRziX1A 21.0.0: 22-1i a 211 0 8 354-8 1 424741 1 1544_1 5-2-2 1-8-8 6-4-0 6-4-0 6-7-8 3-0-0 5x10 11 Scale = 1:782 2x4 11 CUT WEB JUST BEYOND CONNECTOR PLATES AT ITS END. 7 THE JOINT MUST REMAIN UNDISTURBED. 4x4 8 4x8 9 2-0-0 4x4 PLATES TO BE FULLY INTACT AND UNDAMAGED 4x8 10 4-0-0 11 7x14 M18SHS 72" X 33" 3/4" PLYWOOD OR OSB GUSSET (23/32" RATED SHEATHING 48/24 EXP 1) 17 8x10 16 48 X 24" 7x10 = THIS REPAIR IS FOR SHIFTING THE BEARING AT JOINT 14 4-0-0 TO THE RIGHT AS SHOWN 15 3x8 = 14 13 4x10 11 4x8 \\4x4= INSTALL 2 X 6 SPF/DF/SP NO.2 CUT TO FIT TIGHT. ATTACH 1/2" PLYWOOD OR OSB GUSSET (15/32" RATED SHEATHING 32/16 EXP 1) AND 3/4" PLYWOOD OR OSB GUSSET (23/32" RATED SHEATHING 48/24 EXP 1) TO EACH FACE OF TRUSS WITH CONSTRUCTION QUALITY ADHESIVE AND (0 131"X 2.5" MIN) NAILS PER THE FOLLOWING NAIL SCHEDULE: 2 X 4'S - 3 ROWS, 2 X 6'S AND LARGER - 4 ROWS: SPACED ® 4" O.C. NAILS TO BE DRIVEN FROM BOTH FACES. STAGGER SPACING FROM FRONT TO BACK FACE FOR A NET 2" O.C. SPACING IN EACH COVERED TRUSS MEMBER USE 2" MEMBER END DISTANCE. �6.11r1 11.7 0 _f 15.9.14 248 29-0 8 384.0 42-0 u 8.11-4 5 7-12 4.2-14 8-10-10 6 4 0 8-11-8 1 4.0.0 Plate Offsets (X:Y}. j2:0 -1-1,0.3.8J. [3:0-1-12.0.2.01. (4:03-$ 0.5.01, [11:0-1-10,o-1-9j,.[to_0-4.12,Edg91, [15:0-3-8,0.1-&1,116:0-7-12,0-3-01, (18:0-84,0-441 LOADING (psf) TCLL 40.0 (Roof Snow=40.0) TCDL 10.0 BCLL 0.0 BCDL 10.0 SPACING- 2-0-0 Plate Grip DOL 1 00 Lumber DOL 1 00 Rep Stress Incr YES Code IRC2012/TPI2007 CSI. TC 0,45 BC 0,96 WB 0.81 Matrlx-R DEFL. in (loc) I/deft Ud Vert(LL) -0 46 18 >987 240 Vert(TL) -0.80 18-19 >568 180 Horz(TL) 0.40 14 n/a n/a PLATES GRIP MT20 197/144 M18SHS 197/144 Weight: 250 Ib FT = 0% LUMBER- BRACING - TOP CHORD 2x6 SPF 1650F 1.5E TOP CHORD Structural wood sheathing directly applied or 3-1-7 oc purlins. BOT CHORD 2x6 SPF 1650F 1 5E "Except' BOT CHORD Rigid ceiling directly applied or 2-2-0 oc bracing. 11-16: 2x4 SPF 1650F 1.5E WEBS 1 Row at midpt 4-17, 6-16, 7-16, 8-16 WEBS 2x4 SPF 1650F 1 5E SLIDER Left 2x4 SPF 1650F 1.5E 5-9-15, Right 2x6 SPF 1650F 1 5E 2-8-5 REACTIONS (Ib/Size)—2E2518/0.5.B.14=3120/0.5-8 Max-HoT—2==176(LC11) Max Uptift2=902(LC-10),-t4 47(tC-11) Max-Gray-2=2585(LC 1-7):14=3120(L-1) NEW REACTIONS. (Ib/size) 2=2824/0-5-8 (min. 0-4-5), 11=2814/0-5-8 (min. 0-4-7) Max Horz 2=-176(LC 11) Max Uplift 2=-314(LC 10), 11=-313(LC 11) FORCES. (Ib) - Max. Comp./Max. Ten - All forces 250 (Ib) or less except when shown. TOP CHORD 2-3=-6491/663, 3-4=-6191/698, 4-5=-4050/407, 5-6=-4100/505, 6-7=-2419/316, 7-8=-2520/293, 8-10=-2576/217, 10-11=-444/1580 BOT CHORD 2-19=-679/5696, 18-19=-622/6031, 17-18=-703/7094, 16-17=-99/2268, 15-16=-63/2264, 14-15=-41/917, 11-14=-1285/457 WEBS 3-19=0/270, 4-19=-333/19, 4-18=-225/2861, 4-17=-3969/496, 5-17=-815/191, 6-17=-329/2681, 6-16=-409/570, 7-16=-682/145, 8-16=-259/146, 8-15=-565/133, 10-15=-75/1525, 10-14=-3672/537 NOTES - 1) Wind: ASCE 7-10; Vult=115mph (3 -second gust) V(IRC2012)=91mph; TCDL=6.0psf; BCDL=6.Opsf; h=25ft; Cat II; Exp C; enclosed; MWFRS (envelope) automatic zone; cantilever left and right exposed ; end vertical left and right exposed; Lumber DOL=1 00 plate grip DOL=1.00 2) TCLL: ASCE 7-10; Pf=40.0 psf (flat roof snow); Category II; Exp C; Partially Exp.; Ct=1.1 3) Unbalanced snow loads have been considered for this design 4) This truss has been designed for greater of min roof live load of 16.0 psf or 1.00 times flat roof load of 40 0 psf on overhangs non -concurrent with other live loads. 5) All plates are MT20 plates unless otherwise indicated. 6) This truss has been designed for a 10.0 psf bottom chord live load nonconcurrent with any other live loads. 7) Bearing atjoint(s) 2 considers parallel to grain value using ANSI/TPI 1 angle to grain formula. Building designer should verify capacity of bearing surface J�n W1 A kING - Verify design parameters and READ NOTES ON THIS AND INCLUDED MITEK REFERENCE PAGE 811-7473 rev. 10/03/2015 BEFORE USE. Design valid for use only with MiTek® connectors. This design Is based only upon parameters shown, and Is for an individual building component, not a truss system. Before use, the building designer must verify the applicability of design parameters and properly incorporate this design into the overall building design Bracing indicated is to prevent buckling of individual truss web and/or chord members only Additional temporary and permanent bracing is always required for stability and 10 prevent collapse with possible personal injury and property damage For general guidance regarding the fabrication, storage, delivery, erection and bracing of trusses and truss systems, see ANSIITPII Quality Criteria, D5B-89 and BCSI Building Component Safety Information available from Truss Plate Institute, 218 N Lee Street, Suil. 312, Alexandria, VA 22314. 12. N February 24,2017 MiTek 7777 Greenback Lane Suite 109 Citrus Heights, CA 95610 Symbols PLATE LOCATIO 41 14-1 I4 N AND ORIENTATION Center plate on joint unless x, y offsets are indicated. Dimensions are in ft -in -sixteenths. Apply plates to both sides of truss and fully embed teeth. For 4 x 2 orientation, locate plates 0- 'her from outside edge of truss. This symbol indicates the required direction of slots in connector plates. Plate location details available in MiTek 20/20 software or upon request. PLATE SIZE 4x4 The first dimension is the plate width measured perpendicular to slots. Second dimension is the length parallel to slots. LATERAL BRACING LOCATION BEARING Indicated by symbol shown and/or by text in the bracing section of the output. Use T or I bracing if indicated. Indicates location where bearings (supports) occur. Icons vary but reaction section indicates joint number where bearings occur. Min size shown is for crushing only. Industry Standards: P.NSITTPI1: National Design Specification for Metal Plate Connected Wood Truss Construction. DSB-89: Design Standard for Bracing. ECSI: Building Component Safety Information, Guide to Good Practice for Handling, Installing & Bracing of Metal Plate Connected Wood Trusses. cc 0 2 U 0 Numbering System 1 6-4-8 j dimensions shown in ft -in -sixteenths (Drawings not to scale) 2 TOP CHORDS 3 8 BOTTOM CHORDS 7 6 5 TOP CHORD JOINTS ARE GENERALLY NUMBERED/LETTERED CLOCKWISE AROUND THE TRUSS STARTING AT THE JOINT FARTHEST TO THE LEFT. CHORDS AND WEBS ARE IDENTIFIED BY END JOINT NUMBERS/LETTERS. PRODUCT CODE APPROVALS ICC -ES Reports: ESR -1311, ESR -1352, ESR1988 ER -3907, ESR -2362, ESR -1397, ESR -3282 Trusses are designed for wind loads in the plane of the truss unless otherwise shown. Lumber design values are in accordance with ANSI/TPI 1 section 6.3 These truss designs rely on lumber values established by others. © 2012 MiTek® All Rights Reserved 1 A General Safety Notes Failure to Follow Could Cause Property Damage or Personal Injury Sr MiTeks MiTek Engineering Reference Sheet: MII-7473 rev. 10/03/2015 1. Additional stability bracing for truss system, e.g. diagonal or X -bracing, is always required See BCSI 2. Truss bracing must be designed by an engineer. For wide truss spacing, individual lateral braces themselves may require bracing, or altemative Tor I bracing should be considered 3. Never exceed the design loading shown and never stack materials on inadequately braced trusses 4. Provide copies of this truss design to the building designer, erection supervisor, property owner and all other interested parties. 5. Cut members to bear tightly against each other. 6. Place plates on each face of truss at each joint and embed fully. Knots and wane at joint locations are regulated by ANSI/TPI 1. 7. Design assumes trusses will be suitably protected from the environment in accord with ANSI/TPI 1. 8 Unless otherwise noted, moisture content of lumber shall not exceed 19% at time of fabrication. 9. Unless expressly noted, this design is not applicable for use with fire retardant, preservative treated, or green lumber 10. Camber is a non-structural consideration and is the responsibility of truss fabricator. General practice is to camber for dead load deflection. 11 Plate type, size, orientation and location dimensions indicated are minimum plating requirements 12. Lumber used shall be of the species and size, and in all respects, equal to or better than that specified. 13. Top chords must be sheathed or purlins provided at spacing indicated on design. 14. Bottom chords require lateral bracing at 10 ft spacing, or less, if no ceiling is installed, unless otherwise noted. 15. Connections not shown are the responsibility of others. 16. Do not cut or alter truss member or plate without prior approval of an engineer. 17. Install and load vertically unless indicated otherwise. 18. Use of green or treated lumber may pose unacceptable environmental. health or performance risks. Consult with project engineer before use. 19 Review all portions of this design i,frortl. hack, words and pictures) before use. Reviewing pictures alone is not sufficient. 20. Design assumes manufacture in accordance with ANSI/TPI 1 Quality Criteria Li PFAmtt 8 BOTTOM CHORDS 7 6 5 TOP CHORD JOINTS ARE GENERALLY NUMBERED/LETTERED CLOCKWISE AROUND THE TRUSS STARTING AT THE JOINT FARTHEST TO THE LEFT. CHORDS AND WEBS ARE IDENTIFIED BY END JOINT NUMBERS/LETTERS. PRODUCT CODE APPROVALS ICC -ES Reports: ESR -1311, ESR -1352, ESR1988 ER -3907, ESR -2362, ESR -1397, ESR -3282 Trusses are designed for wind loads in the plane of the truss unless otherwise shown. Lumber design values are in accordance with ANSI/TPI 1 section 6.3 These truss designs rely on lumber values established by others. © 2012 MiTek® All Rights Reserved 1 A General Safety Notes Failure to Follow Could Cause Property Damage or Personal Injury Sr MiTeks MiTek Engineering Reference Sheet: MII-7473 rev. 10/03/2015 1. Additional stability bracing for truss system, e.g. diagonal or X -bracing, is always required See BCSI 2. Truss bracing must be designed by an engineer. For wide truss spacing, individual lateral braces themselves may require bracing, or altemative Tor I bracing should be considered 3. Never exceed the design loading shown and never stack materials on inadequately braced trusses 4. Provide copies of this truss design to the building designer, erection supervisor, property owner and all other interested parties. 5. Cut members to bear tightly against each other. 6. Place plates on each face of truss at each joint and embed fully. Knots and wane at joint locations are regulated by ANSI/TPI 1. 7. Design assumes trusses will be suitably protected from the environment in accord with ANSI/TPI 1. 8 Unless otherwise noted, moisture content of lumber shall not exceed 19% at time of fabrication. 9. Unless expressly noted, this design is not applicable for use with fire retardant, preservative treated, or green lumber 10. Camber is a non-structural consideration and is the responsibility of truss fabricator. General practice is to camber for dead load deflection. 11 Plate type, size, orientation and location dimensions indicated are minimum plating requirements 12. Lumber used shall be of the species and size, and in all respects, equal to or better than that specified. 13. Top chords must be sheathed or purlins provided at spacing indicated on design. 14. Bottom chords require lateral bracing at 10 ft spacing, or less, if no ceiling is installed, unless otherwise noted. 15. Connections not shown are the responsibility of others. 16. Do not cut or alter truss member or plate without prior approval of an engineer. 17. Install and load vertically unless indicated otherwise. 18. Use of green or treated lumber may pose unacceptable environmental. health or performance risks. Consult with project engineer before use. 19 Review all portions of this design i,frortl. hack, words and pictures) before use. Reviewing pictures alone is not sufficient. 20. Design assumes manufacture in accordance with ANSI/TPI 1 Quality Criteria