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Heidelberg Batch Plant 2 September 13,2024 <br /> Observations <br /> A site visit was conducted on September 5,2024 by Eugene Trahern, SE of Cascade Crest Consulting <br /> Engineers to observe the existing roof framing and to note any deficiencies in the roof framing and <br /> drainage. During our site visit the following items were noted: <br /> 1. Access to the top of the roof was not provided. Our review is based on observations from the <br /> exterior and interior(underside)of the roof framing, several photographs of the topside of the <br /> roof provided by CIR, and Google Earth images. <br /> 2. Based on photographs and our limited observations,the roof contains a reasonable amount of <br /> slope for drainage and no parapets. Exterior observations indicate gutters are provided along <br /> the north and south edges of the roof and which appeared to be filled with vegetation. <br /> 3. Observations from the interior,and as seen on Google Earth photos, indicate damage to the <br /> metal deck roof in the southeast and southwest corners of the building. It is our understanding <br /> that CIR will replace the damaged metal deck roof areas during the re-roofing. <br /> 4. The underside of the roof framing was generally visible;however,the plant was in operation <br /> during our site visit and visibility was limited due to dust. No significant signs of water <br /> damage(i.e., corrosion) or distress to the roof framing was noted in the locations observed. <br /> Several areas were noted where the insulation was damaged or missing. <br /> 5. The building is fully sprinklered. Distribution fire sprinkler lines are typically 3"diameter lines <br /> provided at approximately the 1/4-points of the purlins between each girder bay. The main <br /> lines appeared to be supported by the steel girders. Note that we did not provide an exhaustive <br /> review of the fire sprinkler line conditions. <br /> 6. The building contains multiple large equipment, some of which penetrates the roof for exhaust. <br /> The interior equipment appears to be floor supported and not roof supported. There appears to <br /> be an adequate separation gap between the roof and the main exhaust stack. <br /> 7. This review does not evaluate or address the seismic stability of the building nor any other <br /> aspects of the building such as safety, code compliance, etc. <br /> Findings and Recommendations <br /> According to Commercial Industrial Roofing,the weight of the proposed new roof or overlay systems <br /> is 0.80 lb/sf and will consist of a 60 mil TPO membrane over 1/2"HD coverboard with foam filler <br /> between the standing seam flutes. Utilizing the above noted proposed roofing loads and assumptions, <br /> our calculations indicate that there is sufficient capacity to support a roof overlay of up to 1.0 pound <br /> per square foot(psf) on the existing roof system. <br /> Additionally, it is our opinion that the roof framing systems meet IEBC Section 706.2 requirements <br /> for Recovering, and no structural modifications or additional strengthening is required. <br />