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HomeMy WebLinkAboutMiscellaneous Fire Damage Report 2013-12-19 • �g 7o 0.444-174 6 ST KP ENGINEERING, PC. 4222 COMMERCE STREET, SUITE 2J EUGENE, OREGON 97402 (541) 393-0782 FAX (541) 393-0783 kevin@kpenOneering.biz kpengineering.biz • December 19, 2013 Filers Construction 1085 Madera Street Eugene. OR 97402 Attention: Max Hansen Re: Fire Damage Inspection at 706 Oakdale Street. Springfield. Oregon - Job#kp13087 As you requested, an inspection was performed on December 19. 2013, at the duplex located at 706 Oakdale Street in Springfield. The purpose of the inspection was to examine damage caused by a tire in the upstairs bathroom ceiling of the two-story wood framed structure. The damaged unit of the duplex is on the south side of the structure. The existing roof system is engineered trusses at 24" on center with plywood roofing sheathing, felt, and asphalt roof shingles. See pictures 1-4 on sheets 3 thru 4 of this report to view the general vicinity and extent of damage done by the fire in the bathroom ceiling. At the time of the inspection performed on December 19,2013 the following observations were. made. A portion of the bathroom ceiling finish had been removed along with the ceiling exhaust fan and blown-in attic insulation above. A truss bottom chord and web member in the vicinity of the ceiling exhaust fan were charred by the fire (Picture 2). Prior to the inspection, the charring had been scrapped from the truss members and they were painted/sealed. A 48" long 2x4 had been sistered to the north side of the truss bottom chord with screws at approximately 12" on center. The side of the bottom chord was damaged 3/8" at the most (Picture 3), while the bottom of the web member was damaged W' at the most(Picture 4). None of the damage to the truss members occurred near any gang nail connection plates or end bearing locations. The removed portion of ceiling finish had wiring for ceiling heat in it. The remaining dimensions of the good wood fiber of the truss bottom chord and web member are adequate to resist the potential compression and tension loads that could be applied to them. Calculations showing the required areas of each truss member are on sheet 5. The compression and tension loads are from a generic Howe roof truss that spans 30' and has a 4:12 roof pitch. The truss reactions were provided by Relco Truss (see sheet 6). The following repairs should be made to the structure. Install new R-3S blown-in or Batt insulation in the attic space above the bathroom per the 2010 Oregon Energy Efficiency Specialty Code. Repair and/or replace the ceiling finish to match existing. Replace the bathroom exhaust fan to meet the ventilation requirements of Section R303.3 of the 2011 Oregon - Residential Specialty Code. If the ceiling heat was the only source of heat in the bathroom prior to the fire, install a Cadet wall heater or equivalent device capable of complying with the heat source requirements of Section R303.8 of the 2011 Oregon Residential Specialty Code. These and all other repairs to the structure are to be in compliance with the 2011 Oregon Residential Specialty Code as adopted by the City of Springfield. I hope this report is adequate for your purposes at this time. Damage not noted above that is discovered during the cleaning, exposing, and repair of the structure should be brought to the attention of KP Engineering, PC. Thank you for this opportunity to he of service. If you have any further questions please do not hesitate to contact me at (541) 393-0782. Very truly yours, C,� ys(5>- •mi 7{l\6. k. eREGONa / J' 7E lc} 0/ PEj EXPIRES: 12-31- v4-- Kevin M. Peterson, PE • • 2 KP ENGINEERING, PC . 4222 COMMERCE STREET, SUITE 2J EUGENE, OREGON 97402 (541) 393-0782 FAX (541) 393-0783 kevin r,kpengineeriugbiz • Job #kp13087 Fire Damage Inspection at 706 Oakdale Street. Springfield, Oregon Si it1,1 ••••'. i im t4i at iF 3 fit } � Sili c T ..y„ {A Ii -1.1.•.• ' gi 4.-";..t gyp,+'.l w.' Picture I: This is a picture of the west elevation of the duplex where the fire occurred. 706 Oakdale Street is the unit on the south (right) side of the structure. The upstairs bathroom, where the fire occurred, is located to the north (left) of the upstairs window. t 4.4 N. i'` , `'rte y i!4„ 3 4 1.:6b A in,.� 1 r- _ . Picture 2: This is a picture of the opening in the upstairs bathroom ceiling looking toward the west. The white paint on the truss members is where the charring had been scrapped and sealed prior to the inspection. A 48" long 2x4 had been sistered to the north side of the truss bottom chord as well. 3 • KP ENGINEERING, PC 4222 COMMERCE STREET, SUITE 2J EUGENE, OREGON 97402 (541) 393-0782 FAX (541) 393-0783 kevin@kpeugineering.biz Job #kp13087 Fire Damage Inspection at 706 Oakdale Street, Springfield. Oregon ,>s1 A�y.pr �{ w c Picture 3: This is a picture of the truss bottom chord that was damaged by the fire. After the charring had been scrapped from the side of the 2x4 member, the remaining portion was a minimum of 1-118" wide. A 48" long 2x4 had been sintered onto the right(north) side of the bottom chord prior to the inspection. • Eti am i h t �,� r v •-�.- {g "3v 3 ig�'u; �4 p 1y i'1 J11 t !ki 5 w•x k {:R' Rt.. { a .mss yfy,• ti Y+n'� E � M I5 A R R r b -v 3k S`I f tl x s ,i.X W t .Y 1,11 r X4 IgF. }t U Yg y N�}�... Picture 4: This is a picture of the truss web member after the charring had been scrapped and sealed. 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ITiU44T9 e — _- City Ply 1. i • rJ'FI rri Co cm 6, rpm 1st HONE 11 1 I Job Reference(optional) R ''cu Y' s Mern:nur,Or. 57446 �-_ _--..— _-]250FA y Aug 252011-1-1p2 b k1 Inc:Tt U15:2649 k6 P aggel ID:HOhYnIT03C 91Zn3GzBOMy-JYiKBrBA0?1wh 1 03ZuLu lJi2 ANkCheS aJy]Kj4 7-10-14 15-0-0 22-1-2 0-0-c 1 r 31.140-8 I I-u0-8 7-10-4 7=1 2 7--1 t Scale=1:53.1 4x6-- 4 4,00 12 " 3x4 3x4 c 3 I xi T1 ;ia W3 T2_ in .- W1 >V2 4V4.— W5 - m 2 6 y = u1I -- -B7- 7- 1 ry O i ."- .i i'99.) d 10 9 8 3x5--- 1,5x4 1 - 5x8 r. 1.5x4 1',. 3x5 7-10-14 5-0-0 22-1-2 330 7-10-14 7-1-2 _._ ..__-.___ .._.._7.1.2 _-. _. .1044 .. ._ Plate Offsets 0(,);):.12;0-1-20-0-21,pm-3-0,0-2-4h[6:0-1-2.0-0-2).(9_0-0-0,0-3-0] __ _ ' LOADING(psi) SPACING 2-3-0 CSI I DEFL in (loc) 1/deft Ltd PLATES GRIP TOLL 25.0 Plates Increase 1.15 TC 0.38 i Vert(LL) -0.18 8-9 >999 240 MT20 185;148 TOOL 7.0 Lumber Increase 1.15 1 BC 0.37 I Vert(TL) -0.37 8-9 >964 180 BOLL 0 0 • Rep Stress Ina YES WB 0.95 I Horz(TL) 0.11 6 tea n/a FOOL 5.0 Code IRC20091TPI2007 (Matrix-M) I Weight:117 lb FT=10% LUMBER BRACING TOP CHORD 2 14 OF No.16Btr G TOP CHORD Structural wood sheathing directly applied or 3-10-1 oc pudins. EDT CHORD 2 x 4 OF No.11.Btr G BOT CHORD Rigid ceiling directly applied or 10-0-0 ec bracing. WEBS 2 X 4 HF Stud/Std _ - - nlTek recommends seection...in a nd required cross bracing_b.e installed during truss erection in accordance wit h Stabilizer ...._. Installation guide. _ REACTIONS (lb/size) 2=1230/0-5-8 (min.0-1-8).5=1230!0-5-8 (min.0-1-6) Max Horz2=-68(LC 6) Max IIplitl2=-218(LC 3),0=-218(LC 4) FORCES (Ib)-Max.Comp./Max.Ten.•All forces 250(lb)or less except when shown. TOP CHORD 2-3=-25321333.3.4=-1785/247,4-5=-1785/246,5-6=2533/334 POT CI IORD 2-13=-29412333,9-10=-294/2333,8-9=-2244!2333,6-8=-244/2333 WEBS 4-9=-4 2/617,3-9=-8121167,5-9=-8121168 NOTES 1)Unbalanced roof live loads have been considered for this design. 2)Wind:ASCE 7-05:100mph;TCDL=4 2pst;BCOL=3.0psf:h=2511;Cal.1I;Exp B:enclosed;MWFRS(low-rise);Lumber DOL=1,33 plane grip DOt=1.33 3)This truss has been designed for a 10,0 psf bottom chord live load nor concurrent with any other live loads. , 4)-This truss has been designed for a live load of 20.0psf on the bottom chord in all areas where a rectangle 3-6-0 tall by 2-0-0 wide MI fit between the bottom chord and any other members. . 5)A plater eting reduction of 20%has been applied for the green lumber members. 6)Provide mechanical connection(by others)of truss to bearing plate capable of withstanding 100 lb uplift at joint(s)except(jl=lb)11=218, 14-216. 7)This MISS is designed in accordance with the 2009 International Residential Cade sections 8502.11.1 and 8802.10.2 and referenced standard ANSI/TPI I. LOAD CASE(S)Standard