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49930 N Santiam Hwy SE SITE VISIT REPORT Idanha, OR 97350-9503 State Farm Claim No. 37-11K4-75P elevated temperatures, such as in industrial applications where structural members are in close proximity to or in contact with heated fluids in manufacturing processes. • HOUSE: SOOT/SMOKE RESIDUE ON TRUSS TOP CHORDS [FIGURES 32, 33] Wood members with visual smoke or soot staining or even with slight browning of the surface due to fire have significant residual load capacity. Fire residues on the surfaces of the wood do not affect the load capacity of the member. (As discussed above under GARAGE - MEZZANINE FLOOR JOISTS, this report addresses structural safety of the building, not hygiene or toxins.) Wood exposed to temperatures above 550°F will form a residual char layer on the surface. When char does occur, that layer can be removed relatively easily. In light-frame construction - as opposed to heavy timber construction - significantly charred members are generally replaced due to cost of repair versus replacement. Individual charred wood members can be inspected, char removed, and an assessment of the pyrolysis zone depth can be made. A member may remain in service without reinforcement upon calculating its modified section properties compared to design loads. Upon removal of char (where occurs) and removal of other fire residues, the wood surfaces can be treated for residual odors, and then sealers can be applied if and where necessary or applicable. Nevertheless, wood char was not observed. The structural safety of the wood roof truss system has not been compromised due to heat from the wildfire on the reported date-of-loss. However, the soot/smoke residue may be removed in accordance with recommendations by the Hygienist or others. Report Date: March 28, 2021 Page 15 of 44 Site Visit Date: March 6, 2021 Taylor& Syfan Consulting Engineers, Inc.