Loading...
Specifications MST2oi y -ov t09 773o HAtJSEN Lt\1 GREEN MOUNTAIN structural engineering STRUCTURAL CALCULATIONS Plan 2885- Deck Elderberry Ridge, Lot 12 OFFICE COPY Tigard, Oregon Contractor: REvIsION Riverside Homes `cop PRpts ,6, `r�c7 +!9 78PE it ' OREGON�,q rr CI*VA 2� 4EXPIRES 12• 31 •2.OiO Project Number: 17485 September 26, 2019 Index Structural Information Deck Analysis D-1 thru D-2 1111 greenmountainse.com-info@greenmountainse.com-4857 NW Lake Rd.,Suite 260.Camas,WA 98607 Project € StruCalc 9.0 Page I—— Location:DJ r , Floor Joist of [2015 International Building Code(2015 NDS)] 1.5 IN x 11.25 IN x 14.0 FT Pressure Treated @ 16 O.C. #2-Hem-Fir-Dry Use StruCalc Version 10.0.1.6 9/26/2019 10:03:00 AM Section Adequate By: 14.8% Controlling Factor:Moment DEFLECTIONS Center LOADING DIAGRAM Live Load 0.21 IN L/801 Dead Load 0.08 in Total Load 0.29 IN L/583 Live Load Deflection Criteria:11360 Total Load Deflection Criteria:L/240 REACTIONS A Live Load 373 lb 373 lb Dead Load 140 lb 140 lb Total Load 513 lb 513 lb Bearing Length 0.84 in 0.84 in SUPPORT LOADS A Live Load 280 plf 280 plf Dead Load 105 plf 105 plf A 14n B Total Load 385 plf 385 plf MATERIAL PROPERTIES #2-Hem-Fir JOIST DATA Center Base Values Adjusted Span Length 14 ft Bending Stress: Fb= 850 psi Fb'= 782 psi Unbraced Length-Top 0 ft Cd=1.00 CF=1.00 Cr=1.15 Ci=0.80 Unbraced Length-Bottom 0 ft Shear Stress: Fv= 150 psi Fv'= 120 psi Floor sheathing applied to top of joists-top of joists fully braced. Cd=1.00 Ci=0.80 Floor Duration Factor 1.00 Modulus of Elasticity: E= 1300 ksi E= 1235 ksi JOIST LOADING Ci=0.95 Uniform Floor Loading Center Comp. L to Grain: Fc- = 405 psi Fc--- = 405 psi Live Load LL= 40 psf Controlling Moment: 1797 ft-lb Dead Load DL= 15 psf 7.0 Ft from left support of span 2(Center Span) Total Load TL= 55 psf Created by combining all dead loads and live loads on span(s)2 TL Adj.For Joist Spacing wT= 73.3 plf Controlling Shear: 513 lb At left support of span 2(Center Span) Created by combining all dead loads and live loads on span(s)2 Comparisons with required sections: Req'd Provided Section Modulus: 27.57 in3 31.64 in3 Area(Shear): 6.42 in2 16.88 in2 Moment of Inertia(deflection): 79.97 in4 177.98 in4 Moment: 1797 ft-lb 2062 ft-lb Shear: 513 lb 1350 lb Project: StruCalc 9.0 page s / Location:DB ' Multi-Loaded Multi-Span Beam _ ... of [2015 International Building Code(2015 NDS)] 3.5 IN x 11.25 IN x 7.0 FT Pressure Treated #2-Hem-Fir-Dry Use StruCalc Version 10.0.1.6 9/26/2019 10:05:05 AM Section Adequate By:91.5% Controlling Factor:Moment DEFLECTIONS Center LOADING DIAGRAM Live Load 0.02 IN U3988 Dead Load 0.02 in Total Load 0.04 IN L/2033 Live Load Deflection Criteria: 0360 Total Load Deflection Criteria:U240 REACTIONS A Live Load 700 lb 700 lb Dead Load 673 lb 673 lb Total Load 1373 lb 1373 lb Bearing Length 0.97 in 0.97 in BEAM DATA Center Span Length 7 ft Unbraced Length-Top 0 ft A 7 f Unbraced Length-Bottom 7 ft Live Load Duration Factor 1.00 Notch Depth 0.00 UNIFORM LOADS Center MATERIAL PROPERTIES Uniform Live Load 200 plf #2-Hem-Fir Uniform Dead Load 185 plf Base Values Adjusted Beam Self Weight 7 plf Bending Stress: Fb= 850 psi Fb'= 748 psi Total Uniform Load 392 plf Cd=1.00 CF=1.10 Ci=0.80 Shear Stress: Fv= 150 psi Fv'= 120 psi Cd=1.00 Ci=0.80 Modulus of Elasticity: E= 1300 ksi E'= 1235 ksi Ci=0.95 Comp. to Grain: Fc-- = 405 psi Fc- = 405 psi Controlling Moment: 2403 ft-lb 3.5 Ft from left support of span 2(Center Span) Created by combining all dead loads and live loads on span(s)2 Controlling Shear: -1373 lb At right support of span 2(Center Span) Created by combining all dead loads and live loads on span(s)2 Comparisons with required sections: Req'd Provided Section Modulus: 38.55 in3 73.83 in3 Area(Shear): 17.16 in2 39.38 in2 Moment of Inertia(deflection): 49.03 in4 415.28 in4 Moment: 2403 ft-lb 4602 ft-lb Shear: -1373 lb 3150 lb GREEN MOUNTnIN RECEIVED structural engineering MAR 2 8 2019 CITY OF TIGARD BUILDING DIVISION STRUCTURAL CALCULATIONS Plan 2885 Elderberry Ridge, Lot 12 Tigard, Oregon Contractor: Riverside Homes sc' PROre, .opNESd>0 49 78PE .51 1 OREGON A Mt _ 1EXPIRLS 12. 3 •?.t) a Project Number: 17485 March 7, 2019 Index Structural Information Lateral Analysis L-1 thru L-15 Pk greenmountainse.com- info@greenmountainse.com -4857 MW Lake Rd..Suite 260.Camas,WA 98607 GREEN MOUNTnIN structural engineering STRUCTURAL DESIGN INFORMATION GOVERNING CODE: 2015 International Residential Code(IRC) 2015 International Building Code(IBC) This engineering pertains to the design of the Lateral Force Resisting System and a review of the home designer's framing and foundation plans. The home designer is responsible for making any necessary changes as required by these calculations to their framing and foundation plans. 1. Dead Load: A. Roof 15 psf B. Floor 10 psf C. Exterior walls 10 psf D. Exterior walls with veneer 50 psf E. Interior walls with gypboard each side 5 psf 2. Live load: A. Floor 40 psf B. Decks&Balconies 60 psf 3. Snow load: A. Uniformly distributed snow load on roof 25 psf 4. Wind load—based on ASCE 7-10 CH 27 MWFRS Directional Procedure: A. 3 Second Gust Wind Speed V=126 mph B. Exposure B C. Importance factor I= 1.0 D. Topographical Factor Kzt=1.0 E. Wind Directional Factor Kd=0.85 F. Structure classified as enclosed 5. Seismic load—based on ASCE 7-10 Section 12.14: A. Mapped Spectral Acceleration for short periods Ss=1.0 B. Mapped Spectral Acceleration for 1 second period S 1=0.34 C. Soil Site Class D D. Ductility coefficient R=6.5 E. Seismic Design Category D 6. Foundation Soil Properties: A. Undisturbed sandy silt per IBC 2015 Table 1806.2 .Soil Class#5 B. Maximum vertical bearing pressure 1500 psf 7. Retaining wall lateral loads: A. Walls free to displace laterally at top 40 pcf B. Walls restrained against lateral displacement at top 45 pcf 8. Concrete: A. 28 day design strength F'c 3000 psi B. Reinforcing bars ASTM A615,Grade 60 greenmountainse.com—info@greenmountainse.com—4857 NW Lake Rd.,Suite 260,Camas,WA 98607 GREEN M O U N TSI I N PROJECT: Riverside - 2885 IOW structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: -1 LATERAL SEISMIC DESIGN BASED ON ASCE-7-10 1617.5 Simplified analysis procedure for seismic design of buildings 1.2 SEISMIC BASE SHEAR v (EQ.12.14-11 with F=12) mapped spectral acceleration for Ss := too short periods(Sec.11.4.1) from USGS web site S. mapped spectral acceleration for := 0.34 1 second period (Sec.11.4.1) Site coefficient(Table 11.4-1) Fa'— 1'1 Based on Soil F„ Site coefficient(Table 11.4-2) F :— 18 Site Class D SMS Fa•Ss SMS= 1.1 (Eq.11.4-1) 5M1:= FF•S1 5M1= 0.61 (E q.11.4-2) 11.4.43 Design spectrum response acceleration parameters 2 SDS 3 'SMS - 0/3 > 0.50g SEISMIC 2 CATEGORY SDi:= •SM1 SDI 0.20g D per Table 11.6-1 1.2•Sps WOOD SHEAR PANELS V W R:= 65 Table 9.52.2 R 1.2.0.73 V:= 65 •V'., V:= 0.135•W 12.4 Seismic Load Combinations E 1 a, (Eq.12.4-3 with redundancy factor=13 per 12.342) WSD:= 0.7•E 0.7.1.3 0.135 W 0.123,W WOOD SHEAR PANELS 11 GREEN M O U N TV1 I N PROJECT: Riverside - 2885 structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-2 LATERAL SIMPLIFIED WIND AND SEISMIC COMPARISON WIND - AL, . ___ 7A i t psf IIWind ease Shear Length L:= 52-ft Height Ht:= 24•ft WIND:= L•Ht-(11•psf + 7.4•psf) SEISMIC WIND= 22963.2 lb F r Zof F2 -} — Wfloor — Seismic Wwal l Base Shear Aroof := 52•ft•40•ft Aroof = 2080ft2 • floor 43-ft-40-ft Afloor= 1720ft2 Wwalls 4.52•ft•20•ft Wwalls = 4160ft2 SEISMIC:= (Aroof•15•psf + Anoor•15•psf + Wwalls'10•psf)•0.123 SEISMIC= 12127.8 lb WIND GOVERNS DESIGN ft GREEN MOUNTMINPROJECT: Riverside - 2885 tie structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-3 LATERAL WIND DESIGN IS BASED ON ASCE 7-10 CH 27 MWFRS DIRECTIONAL PROCEDURE VELOCITY PRESSURE qz:= .00256•Kz•Kzt•Kd•V2 I (Eq.6-15) EXPOSURE B WIND SPEED(3 second gust) Vas:= 126 mph IMPORTANCE FACTOR I := 1.0 TOPOGRAPHICAL FACTOR Kzt := 1.0 WIND DIRECTIONAL FACTOR Kd:= 0.85 (Table 6-4) EXPOSURE COEFFICIENT 0'-15' Kz:= 0.57 qz:= ,00256•Kz•Kzt•Kd•V3s2•I qz= 19.69 (varies/height) 15'-20' Kz:= 0.62 qz:= .00256•lc-Kzt•Kd•V3,2•I qz= 21.42 20'-25' Kz:= 0.66 qz:= .00256•Kz•Kzt•Kd•V3,2•I qz= 22.8 25'-30' Kz:= 0.70 qz:= .00256•Kz•Kzt•Kd•V3s2•I qz= 24.18 A GREEN MOUNTMIN PROJECT: Riverside - 2885 structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-4 LATERAL WIND DESIGN IS BASED ON ASCE 7-10 CH 27 MWFRS DIRECTIONAL PROCEDURE cont. WIND PRESSURE ti- .i, ; G :_ 0&':-) Gust factor c-; pressure coefficient AT WALLS For Working Stress Design Multiply WIND PRESSURE by 0.6 per IBC 1605.3.1 0'-15' WINDWARD P„,:= 12.4•psf•0.85.0.8 PW= 8.43 psf LEEWARD PL := 12.4•psf•0.85.0.5 PL = 5.27 psf 1B-20' WINDWARD P,,:= 13.49.psf•0.85.0.8 PW= 9.17 psf LEEWARD PL := 13.49•psf•0.85.0.5 PL = 5.73 psf 2a-25' WINDWARD P,,:= 14.36•psf•0.85.0.8 PH,= 9.76psf LEEWARD PL := 14.36•psf•0.85.0.5 PL = 6.1 psf AT ROOF 0'-15' WINDWARD PW:= 12.4•psf•0.85.0.3 P„,= 3.16 psf LEEWARD PL := 12.4•psf•0.85.0.6 PL = 6.32 psf 1B-20' WINDWARD PW:= 13.49-psf•0.85.0.3 P,,,= 3.44 psf LEEWARD PL := 13.49•psf•0.85.0.6 PL = 6.88psf 2a-25' WINDWARD P,:= 14.36-psf•0.85.0.3 P,,= 3.66 psf LEEWARD PL := 14.36•psf•0.85.0.6 PL = 7.32 psf 2B-30' WINDWARD P,„:= 15.23•psf•0.85.0.3 PW= 3.88 psf LEEWARD PL := 15.23•psf•0.85.0.6 PL = 7.77 psf ei GREEN MOUNTMIN PROJECT: Riverside - 2885 structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-5 LATERAL WIND DESIGN IS BASED ON ASCE 7-10 CH 27 MWFRS DIRECTIONAL PROCEDURE cont. Assume 6.88 Cp—o. psf psf + h , ` .1 4p--O6 114b 9.17 psf 6.1 psf af- Mean Roof Height 18+ 22 = 20 2 Loads at Roof roof-ave Windward 3.44•psf•5.5•ft= 18.92pIf Leeward 6.88•psf•5.5•ft= 37.84 pIf Wall loads at upper level at main level Windward 8.43psf•4•ft = 33.72p1f 8.43•psf•8.5•ft= 71.66 plf Leeward 5.73•psf-4-ft= 22.92p1f 5.73•psf•8.5•ft= 48.71 plf II 'M4 ? 1 V's Roof A e• 1 s"r rr I n L-6 r + � till 411 1tl I I II c It I u T I i L" PRE. MFG. TRUSSES @ 24" O.C. t all _GIRDER TRUSS Y a `�'i4rli��►*ili�il�17,. , i 4674.e^•! " ' +i�.'!! !r!'' ##!•4►1 �►i!l��liii+��.iiii�#!�) .m; Ir - 44. ♦!0,14 ili ♦ �4M lliliilllllil !�►#;i` ..lil4r ;�� l�lilllll• o f �#il�lillil♦iilllllil�Ib' ►i1lllllllllliIi �! ��l i=iilii •l l.I► +i-`►;iiiiiilie -At------' '^': `�iiii'O': i►liiilllliill/ee n 10,11/4 iitlillilj► 4iiiilililil#ls + ' yS, ,,,�. ° illii;i�i,�li41llllill `�► ♦iil!!ll'►iiii4 0 ♦lill�i4illllll I® •• 4) L-----r—tg •iiilil♦•►iiil r l/l;l;l;l;l;�l.�il;,i I L .3 ♦llilll0 0 e n, RIDGE V -I Illiii4►ill•• • Illy►i♦i• . Ililliiii♦ Il#il ♦lii4►i!l!• Iiia►♦ ♦i+►ll�► \ �il!#♦ir1liilN—�llll� 44./ •+►♦ il+►/ice'Viii!\ Ilii ♦lr1►♦ ♦iiiiilli. Iilll�►♦ ♦ ►iliilllil . I iliilliil�►lii�li +�liilll♦iiliiiii#i�►�� I �li` ♦lilllili� � I!i!ill�►♦ P4�`+►liillilii i' — Iilllll�ii lillllilili��#!� Iiiiill♦:►.i 4'►+►iil �liii♦►ii. Ililiill.' A. '+,lll1 lli. Illlllllilllllili''1 -C►l/�4.iiVl Uf'! lli�ilili\\ II#iliilililllilllilr►-„� !#�4►ll♦•-•'•'•-•lli4,►ill�llll• 0 _— E PRE..MFG. -USSES 0 24” G.C. 0. r/ I (FirML-1 0 14 1 . 6.A. ‘ t ,•7 12 1 PRS. MFG. TRUSSES 0 24" 0.C`" W! 1'-6" RAISED .1 (HEEL A_T PORCH al 1E�, ROOF GUEST BDRM E AT JACKS //��rr�� w OI 24" O.C. (i 1 ® C ® PRE. MFG. W/ t'-6" RAISED "lf 'ijfr / TRUSSES H EL 0 24 O,C. M L 19 W! t'-6 RAISED _ L_ l.� _. a r i- -- L-7 16 . 1 1011'. . ....f. P&S I 7:::7' ED 0 1I III 1 1 III 1 I I I MASTER III 6ATi r� �1 / MASTER 111 BEDROOM BEDROOM / �.[`.'�� TWO UNC I ) V I iii csl !11 .0 X . ... III 111 E 1 I A OATH ` ` 0 \ Fr I 0 N IP11-1LAUNORY !1 I 8n a ( Lir_, ! R Z ' , Pa:S \111,11 Z O Y IL O r .c ,) • LOFT O Q O II BEDROOM BEDROOM THREE FOUR ,.--.,• I X61► N Li?' ( ."' I t 11 I I °N5114. 6046 XO SLDR. 6046 XO SLDR. 2030 6030 PIC. (EGRESS) (EGRESS) WG. t P". # t gi t f\lLiO‘12 WO r • t4 t.41-1 L-8 0J Lo PATO Z la It 11 )D _v___ a ,.....___.,......1 --.7 11 ME DINING ROOM FOOM GREAT ROOM POCKET F== 0 OFFICE \ II • II 1.1 TYPICAI.AIR II r- ST I ll ii I DETAIL 1Ik I II L`---- --J J I II —a Q X iii I I I t l - _ p II KITCHEN III I lI III,, -----I-----B4 l 1 11 -1.[ \ \\:. 4 0(0 q 14 II i—r V 1 TYPicp 1/44 WALL J L DCT/JL {f��1 Iw.,.c_ GARAGE I '1 I `L FOYER II —, r 1 Il, -H, 2frb ----)--_ L 1 II REN 11 i(47 1 /� v II 3 II II -`l e. 1,/-20rW, GREEN MOUNTVIIN PROJECT: Riverside - 2885 11W structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-9 LATERAL SHEAR WALL DESIGN Pdl Pdl W'dl 4 � .� P0P:= wind V:= seismic h R=Hol down Force Based on 2012 ISC Basic Load Corbinations 1605.3.1 0.6D + w (Equation 16-11) 0.6•D + 0.7•E (Equation 16-12) Overturning Moment: Mot:= P•h L2 Resisting Moment: Mr:= 0.6•(Wdi + Wwaii) (2 + 0.6•Pdi•L Mot— Mr Holdown Force R L II GREEN MOUNTAIN PROJECT: Riverside - 2885 %11V structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-10 LATERAL Left Elevation Exterior Walls Second Level Wind Force P:= 2260•Ib P= 22601b Length of wall L:= 5•ft + 4•ft+ 19•ft L= 28ft F' Shear v:= L v= 80.71 plf A 5 Overturning Mot:= P•8•ft•28 Mot= 3228.57Ib.ft Moment (5.ft)2 Resisting Mr := 0.6•(15•psf•2•ft+ 10•psf•8•ft) 2 + 0.6.600•lb•5•ft Moment Mr = 2625lb•ft Mot— Mr Holdown = 120.71 lb Force 5-ft Main Level Wind Force P:= 4660.16 P= 4660 Ib Length of wall L:= 14•ft+ 10•ft+ 8•ft L= 32ft P Shear v:= — v= 145.63 plf B 8 Overturning Mot:= P•9•ft°32 Mat= 10485lb•ft Moment (8•ft)2 Resisting Mr := 0.6.(15•psf•2•ft + 10•psf•17•ft)• 2 + 0.6.800•Ib•8•ft Moment Mr = 7680lb•ft Mot— Mr Holdown = 350.63 lb 8-ft Force GREEN MOUNTRIN PROJECT: Riverside - 2885 411" structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-1 LATERAL Front Elevation Exterior Walls Second Level Wind Force P:= 2373•Ib P= 23731b Length of wall L:= 3.5•ft+ 3•ft + 3.5•ft + 3.5•ft L = 13.5 ft P Shear v:= - v= 175.78pIf L 3.5 Overturning Mot:= P•8•ft.-135 Mot= 4921.781b•ft Moment 13.5 (3.5•ft)2 Resisting Mr := 0.6 (15 psf•4•ft+ 10•psf•8•ft)• 2 + 0.6.600•lb•3.5•ft Moment Mr = 1774.5 lb•ft Mot- Mr Holdown = 899.22 lb Force 3.5 ft MSTC48133 Main Level Wind Force P:= 2988•Ib P = 2988 lb Length of wall L:= 2.25•ft + 2.25•ft+ 1.5•ft+ 1.5•ft L = 7.5ft 2.25.3.5 = 7.88 P Shear Wind v:= — v= 398.4 plf D 2.25 Overturning Mot:= P•7.88•ft• Mot= 7063.631b ft Moment 7.5 (2.25•ft)2 Resisting Mr := 0.6•(15•psf•4•ft+ 10•psf•8•ft)• 2 + 0.6.800•lb•2.25•ft Moment M M Holdown of - 2564.89 lb Mr = 1292.63 lb•ft Force 2.25.ft HTT5 A w r GREEN MOUNTI IN PROJECT: Riverside - 2885 structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-12 LATERAL Right Elevation Exterior Wal Is Second Level Wind Force P:= 2260•Ib P= 226016 Length of wall L:= 8•ft+ 5•ft+ 4•ft L = 17ft P Shear v:= - v= 132.94 plf A L 4 Overturning Mot:= P•8•ft•— Mot= 4254.12lb.ft Moment 17 (4•ft)2 Resisting Mr:= 0.6.(15.psf•2•ft + 10•psf•8•ft)• 2 + 0.6.600•Ib 4•ft Moment Mr = 1968lb.ft Mot- Mr Holdown = 571.53 lb Force Oft Main Level Wind Force P:= 4660.1b P= 4660 lb Length of wall L:= 15•ft+ 8•ft+ 3.fit L= 26ft P Shear v:= - v= 179.23 plf S 8 Overturning Mat:= P•9•ft•26 Mot= 12904.621b•ft Moment (8•ft)2 Resisting Mr:= 0.6.(15.psf.2-ft+ 10•psf•17•ft)• 2 + 0.6.800•lb•8•ft Moment Mr = 7680lb.ft Mot— Mr Holdown = 653.08 lb 8•ft Force GREEN MOUNTAIN PROJECT: Riverside - 2885 1410 structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-13 LATERAL Rear Elevation Exterior Walls Second Level Wind Force P:= 2373.1b P= 23731b Length of wall L:= 7.5•ft + 11•ft + 4•ft L= 22.5ft P Shear v:= - v= 105.47p1f A L 7.5 Overturning Mot:= P 8.ft Mat= 63281b ft Moment 225 (7.5•ft)2 Resisting M�:= 0.6•(15•psf•2•ft + 10 psf•12•ft)• 2 + 0.6•600•11,•7.5-ft Moment Mr = 5231.25 lb ft Mot- Mr Holdown = 146.23 lb Force 7.5ft Main Level Wind Force P:= 3813•lb P= 38131b Length of wall L:= Eft+ 7•ft + 4-ft L= 17ft P Shear Wind v:= - v= 224.29 p1f 5 4 Overturning Mot:= P•9•ft•— Mot= 8074.59 lb-ft Moment 17 (4.ft)2 Resisting Mr:= 0.6•(15 psf•4•ft+ 10•psf•8•ft)• + 0.6.800•Ib•4•ft Moment 2 Mot Mr Mr = 2592 Ib•ft Holdown = 1370.65 lb Force 4.ft HTTS GREEN MOUNTS IN PROJECT: Riverside - 2885 structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-14 LATERAL Interior Shear Walls at back of Garage Main Level Wind Force P:= 4069.1b P= 4069 lb Length of wall L:= 18-ft L= 18ft P Shear Wind v:= — v= 226.06plf 5 L Overturning Mot:= P•9•ft Mot= 36621 Ib•ft Moment (18•ft)2 Resisting Mr:= 0.6.(10•psf•12•ft+ 10•psf•9•ft)• 2 + 0.6.1200•Ib•18•ft Moment M Holdown of- Mr = 180.5 lb M = 33372lb•ft Force 18•ft GREEN MOUNTMIIN PROJECT: Riverside - 2885 4160 structural engineering DATE: 12/4/2017 BY: CM JOB NO: 17485 SHEET: L-15 LATERAL WIND ON PORCH ROOF 126 MPH,EXP 5 w := 6•ft•(4.43•psf + 8.86•psf) w = 79.7 pit- /1 it,1 D f, / 11 II II � f II w II H ii L () T /.-. -" I* c it ' (I `/ 11 v 1 III MD / I DESIGN ROOF TO CANTILEVER FROM HOUSE L:= 10-ft D:= 11-ft w•L2 M:= M= 3987 Ib ft 2 support beam on post in wall at house with M Simpson HUCQ-SDS C:= L T:= C C= 398.7 lb 12 SDS 1/4x2 1/4 screws(min)x 172 lbs=2064 in combined withdraw w•L Nail top and bottom chord of first truss to wall with v:= p v= 72.49 plf (2)16d nails at 16"o.c.(web to studs) II