The URL can be used to link to this page

Home My WebLink AboutPermit Structural Calculations 2007-10-3 I' x-a engineering (~ geotechnical/civil" II engineering Eugene, OR 97408 541 6849399 541 6849358 fax , ;; FLOOR JOISTS s 1_~LOORDIAPHRAGM wY I II II I. ";- , i D il ,dr'- ~s'1 Project: 6251 Gravstone Looo Client: River Vallev Builders Job No: 59.07 Date: 10/3/2007 Sheet: 1 of 2 (2) ROWS OF 16d NAILS @6:'Q,c, STAGGERED I '--r-TrlTr "1 I .6" -n-, I I I' , I , I, 14' , , i I ! I' , I,..... . I !' ~ POST ON FOOTING AT i EOGE OF ROCK BANK : I TO BE REMOVED , AFTER BEAM SPLICES AREINSTALlEO I \, (1\ UPHILL FLOOR BEAM REPAIR o 1/4"= 1 '_0" NEV{ (2) .1-74" x 11-:;''' 1.55E TIMBERSTRAND LSL BEAMS ONE ON EACH FACE OF EXIST 4x12 FLOOR BEAM I I '" ~- BOX EXIST, 4x4 POST WITH 2x6 VERTICAL MEMBERS 16d NAILS@ 12" Q,C, STAGGERED SO THAT EVERY OTHER NAIL IS INTO THE EDGE OF THE AOJOINING 2x6 , I,. .- kea engineering geotechnical/civil engineering Eugene, OR 97408 541 684 9399 541 684 9358 lax " Project: 6251 Gravstone LOaD Clienl: River Vallev Builders Job No: 59,07 Dale: 10/3/2007 Sheet: 2 01 2 , / NEW(2)1-y'''x11'%''1.55E Ii FLOOR JOISTS , (2) ROWSW . TIMBERSTRANO LSL BEAMS / r FLOOR DIAPHRAGM ( 16d NAILS @ 6" DC.' . ONE ON EACH FACE OF EXIST I ' STAGGERED ., 4xl.2 FLOOR BEAM . , r Y I I I I Irrmn-rI7rrmr:rTTT = i... .! il'2,6,,~~...i ,I 1 I ,I I ~ POST ON FO~TING AT EDGE OF SOI~ BANK TO BE REMOYBD . . AFTER BEAM SpLICES ARE INSTALI,ED I D I r1\ DOWNHILL FLOOR BEAM REPAIR '~ 1/4" = 1'-0" . w , ~.. ~~\.IJ PRorrscC . ~.~ ~\<G I NCE:!i2,., . o l' '!)?: ~~,r- ~ ~OREGON "I.... '0 ~Q ; "1,:) \0/ d:Y . (, DE/;NIS ~/ 'EX~IRES I l<f -a K & A Engineering, Inc. 3327 Roanoke Ave" Eugene, OR 97408 (541 )684.9399 Voice , (541) 684.9358 FAX ,engineering October 3, 2007 Project: 59,07 Greg Larkin River Valley Builders, Inc, PO Box 832 Sweet Home, OR 97386 Subject: Supplemental Engineering Calculations 6251 Graystone Loop, Springfield, Oregon Description " Pages 1-2 Floor Beam Retrofit As requested, K & A Engineering has evaluated the as-buill conditions of the subject floor framing system, . . N ,Enclosed are the supplemental calculations for the subject proposed iloor beam retrofit, There are two footings in particular that are on the top edge of potentially unstable cut banks, K & A Engineering has proposed a modification to the floor beams to eiiminate the potentially unstable footings, Please see the enclosed details. In addition to the floor beam retrofit, the t 3:ft tal14x4 post on the uphill side of the residence, shall be boxed with 2x6 DF/L' no. 21btr to fomi a section that is at least 5,5-inches x 5,5-inches, The 2x6's should be nailed using 16-d common nails spaced at 12-inches o,c., staggered so that every other nail is into the edge of the adjoining 2x6, . Thank you for theoppbrtunity to be of service, Please call us if you have any questions. Sincereiy, ~~. Chuck Du Fault, EU, K & A Engineering, Inc. EXPIRES ;"'h i~ I / , K & A"Engineering, Inc. , 3327 Roanoke Ave, -.L.l ..:::1 Eugene, OR 97408 ~U (541) 684-9399 enQinel.'rinQ (541) 684-9358 Fax I Rev: 580006 User: KW-0603459, Ver 5,8.0,1-0ec-2003 (c)1983-2003 ENERCAlC Engineering Software Title; 6251 Graystone Loop Dsgnr: CGO - Description: Scope: Timber Beam & Joist ~:.J:i!e'-.........~_,__,,,,_'_ Description Uphill Floor Beam - Single Span Job # 59.07 Date: 3:41 PM, 2 OCT 07 Page 1 59.07_~ POST ANAL YSIS.ECW:Calculalions ~ode Ref: 19~7/2001 NOS, 2000/2003 IBC, 2003 NFPA 5000. Base a'lIowables are user defined Jl I Timber Member Information single span Timber Section licrolam: (2) 1.75 Beam Width in 3,500 Beam Depth in 11,875 Le: Unbraced Length ft 0,00 Timber Grade TrusS Joist- MacMillan, Fb . Basic Allow psi 2,325,0 Fv - "Basic Allow pSI 310,0 Elastic Modulus ksi 1,550,0 Load Duration Factor 1.000 Member Type ManuflPine Repetitive ~t:atus No I Center Span Data' Spa'n fi 12,50 Dead Load #/fI 144,00 Live Load #/fi 480,00 I Results . Ratio = 0,7647 ---- Mmax @ Center in~k 146.25 @X= ft 6,25 fb; Actual ps 1,777,9 Fb : Allowable pSI 2,325,0 Bending OK tv: Actual psi 119.4 Fv ; Allowable psi 310,0 Shear OK I Reactions --, .. ""'" " ~ @ Left End DL Ib, 900,00 LL !b's 3,000,00 Ma~, DL +LL Ibs 3,900.00 @ Right End 'DL Ibs 900,00 LL Ibs 3,000,00 Max, DL +LL Ibs 3,900,00 l Deflections Ratio OK Center DL:. Defl in -0,104 LlDefl Ratio 1,435,6 Center LL -nefl in -0.348 LlDefl Ratio 430,7 Center Total Defl in ,0.453 Location ft 6,250 LlDefl Ratio 331.3 - .J g Q l rL",71\,- . .1'10)0" O'f< ."~O /ti'j('t,(.07/f) 0,)' ,,-~(; 1J.- ~ ' g, , It- ::'.) A-'~' ,--::,,~ ~ 2a.',:;l fJ c 2.,th P-" It> ''7" J"- j', '-f (2'{,7>J<') ,2'+/ r ll- ,I.. Urp.-' '21.7.~_ I' I!, -~-a K ~ A Engineering, Inc. 3327 Roanoke Ave. Eugene, OR 97408 (541) 684-9399 (541) 684-9358 Fax Title: 6251 Graystone Loop Dsgnr: CGD Des~ription : Job # 59,07 Date: 3:39PM, 2 OCT 07 Scope: t' n g in eering Rev: 580006 User: KW-0603459, Ver 5.8.0,':1-Dec~2003 (c)1983-2003 ENERCALC Engineenng Software Timber Beam & Joist Page 1 59.07 _~ POST ANAL VSIS,ECW:Calculations Description Downhill Fioor Beam - Single Span g I Timber Member Information - ~ode Ref: 1997/2001 NOS, 2000/2003IBC, 2003 NFPA5000. Base allowables are user defined , ,. _J "'"'- j __....J J Q 'i'><r.I...... " 30"" 1",- ~. {I'N T~<P' r '0 (.>;+-) U,,> lfa7-,~ It- It, i.n ~. 7..0.._