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, t <br /> .j[ ENGNEER <br /> .� IWI4 Mr.VladAPC1111'LCIS Statewide&Domus <br /> MA[ 12I:11.5 SC[E4T1>I"S May 18,2018 <br /> Page 2 <br /> No significant spalling or cracking was observed in either concrete surface.However,what appeared to be <br /> an area of poor concrete consolidation at the building corner,upon closer inspection was found to be wood <br /> debris embedded within the concrete(Figure 7).The embedded wood was not charred. <br /> Hammer sounding the stained regions of concrete did not identify any regions of delamination or softening <br /> of the concrete surface.However,small areas of concrete paste surrounding the embedded wood debris did <br /> break away. <br /> Discussion and Repair Scope <br /> The lack of charring of wood embedded in the concrete and lack of concrete delamination or spalls indicates <br /> that the concrete was not exposed to high temperatures for an extended period of time. Therefore, the <br /> concrete is likely unaffected by the fire. However,unless done with care, cleaning the concrete surface to <br /> remove fire related staining may further dislodge the embedded wood debris and the cement paste that <br /> surrounds it. <br /> Charred wood siding and wood board wall sheathing should be removed and replaced. This will likely <br /> require removal of the majority of the wood siding between the building corner and exterior door on the <br /> south elevation to obtain a uniform appearance and staggering of joints between individual courses.On the <br /> east elevation, removal of the siding from the underside of the window to the top of the foundation will <br /> allow for removal of char in the wall sheathing below and for an appropriate lap of new weather resistive <br /> barrier where the existing has been burned or torn. <br /> Where charred,the wood board wall sheathing can be replaced with plywood of equal thickness. Given the <br /> very limited amount of charring on the rim joist, cutting out small sections of rim joist and patching back <br /> with new 2x material is appropriate. See Figure 8 for additional repair detail. Interior finishes at <br /> investigative openings can be patched back with like kind materials. <br /> Please let us know if we can be of further assistance with this project. <br /> Sincerely, <br /> WISS,JANNEY,ELSTNER ASSOCIATES,INC. <br /> #004000/00,00.. ._ <br /> .:::.;#7: 4, <br /> John R. Crase,P.E. /1 x= <br />