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6 <br /> NAME: W. Wilbert J. McAdoo, Director of Public Works Orange County Page 2 <br /> PROJECT: Roof Analysis, Selected Roof Areas <br /> DATE: November 4, 1997 <br /> 3. Core Sample Analysis <br /> Core samples of the roof assembly shall be taken and evaluated to determine: <br /> a. The type,quantities,and condition of the various materials which are contained within <br /> the roof assembly. <br /> b. The condition of roof substrate (deck) shall be determined and documented at the <br /> location of the core sample taken. <br /> Written and photographic documentation shall be provided to illustrate the above factors. <br /> 4. Roof Drainage Profile Analysis <br /> a. An examination and calculation of the existing drainage integrity and capacity shall <br /> be made and compared with the actual existing requirements. <br /> b. Calculated documentation of any dead load contribution by ponding water shall be <br /> performed. A roof plan illustrating approximate size and location of drainage <br /> deficiencies shall be included. <br /> 5. En�Y Loss Evaluation <br /> A formatted comparison of the as-designed "R" Value with the existing "R" Value shall be <br /> compiled to reflect,in dollars,any energy loss due to sub-surface moisture or wet insulation. <br /> 6. Serviceability Forecast <br /> A mathematical calculation will be performed to illustrate the longevity, as affected by the <br /> compounding nature of existing roof problems or deficiencies. A lineal chart will be provided <br /> to graphically illustrate the anticipated effective roof service life remaining. <br /> 7. Conclusions/Recommendations <br /> A statement pertaining to the roofs current state of condition and relative problems shall be <br /> made,followed by a statement discussing the various alternatives of viable corrective actions. <br /> 8. Budget Costa <br /> A preliminary estimate of contractor's labor and material costs for the recommended <br /> corrective actions shall be calculated A roof service life chart will also be included to <br /> illustrate the pro-rated life cycle costs of maintenance costs versus replacement costs and <br /> potential extended service life through maintenance. <br /> Roof Engineering Technology, Diagnostics &Design RTD <br /> 5500 Executive Center Drive,Suite 117•Charlotte,NC•28212-8821 704.536.3322 Fax 704.536.4233 Associates, P.A. <br />