July 1, Mr. Michael Jacobs, AIA OMNI Architects 212 North Upper Street Lexington, Kentucky 50507

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1 July 1, 2002 Mr. Michael Jacobs, AIA OMNI Architects 212 North Upper Street Lexington, Kentucky Ref: Vibration Monitoring at University of Louisville Dear Mr. Jacobs; Vibra-Tech Engineers measured ambient and ground induced train vibration at seven different sites for future proposed nano-technology research building for University of Louisville. Ambient vibration was monitored continuously from approximately 9:00 AM to 4:30 PM. The peak and average one-third octave band vibration time history at 30 minutes interval was calculated. Peak vibration refers to maximum vibration level per frequency band during 30 minutes. Average vibration refers to average vibration level per frequency band during 30 minutes. Also, the peak and average vibration level per frequency band during each train by pass per track is calculated. In our final analysis the imum, and imum vibration level in average mode and peak mode is calculated for the entire 7.5 hours of the vibration monitoring. Table 1 and 2 illustrates the results of the calculation. In addition figures 1 through 12 graphically shows the results. It should be notice the recommended vibration criterion is 250 min/s. Based on the review of Tables 1 and 2 and our field observation, the following Table develops to describe our opinion for potential construction of a nano-technology research facility per site.

2 Site Campus Stoddard Johnson School Health and Science Center Reynolds Building Graphic Building Opinion This site is excellent for nano-technology. It will also meet the difficult class E (125min/s) vibration criteria Most of the vibration at this site induced by traffic at Bradley street. The traffic vibration is exaggerated by a pump on the street. The maximum average vibration at this sit is 120 min/s. The mean peak vibration is 565 min/s. We believe that this site can easily meet class D (250 min/s) vibration criteria with some modification to Bradley street. The maximum average and mean peak ambient vibration at this site are 239 min/s and min/s respectively. The maximum average and mean peak train induced vibration is 250 min/s and 1,048 min/s respectively. Even though the vibration amplitude at this location exceeding the 250 min/s recommended vibration criteria, it is our opinion that by properly designing the building s foundation and placing the research center at its basement, the site has the potential to meet class D (250 min/s) vibration criteria The ambient and train maximum average vibration is below 250 min/s. The mean peak vibration is about 400 min/s. The dominated ambient horizontal vibration frequency is at 3.15 Hertz band. Due to the presence of low frequency vibration at this site, the vibration amplitude will be amplified as it enters to the building. It may be a difficult task to meet 250 min/s vibration criteria at this site. The ambient and train vibration was monitored at north east corner of the first floor of this building. The ambient vibration will meet class D vibration criteria. However, the train induced vibration is in excess of 2000 min/s which is well over the recommended vibration criteria. The ambient and train vibration exceed the recommended vibration criteria. This site is not suitable for nano or micro fabrication facility The ambient and train vibration by far exceed the recommended vibration criteria. This site is not suitable for nano or micro fabrication facility Vibra-Tech Engineers plans to prepare a final report that include completed vibration frequency spectrum in 30 minutes interval for each site. This report will be completed within next two weeks. Sincerely; Vibra-Tech Engineers Mohamad Sharif, PE Structural Dynamic Analyst

3 Average Ambient Vibration University of Louisville Vertical Direction 1,60 1,40 1,

4 Average Ambient Vibration University of Louisville Horizontal (East-West) Direction

5 Average Ambient Vibration University of Louisville Horizontal (North-South) Direction

6 Peak Ambient Vibration University of Louisville Vertical Direction 8,00 7,00 6,00 5,00 4,00 3,00 2,00

7 Peak Ambient Vibration University of Louisville Horizontal (East-West) Direction 5,00 4,50 4,00 3,50 3,00 2,50 2,00 1,50 50

8 Peak Ambient Vibration University of Louisville Horizontal (North-South) Direction 4,00 3,50 3,00 2,50 2,00 1,50 50

9 Average Train Induced Vibration University of Louisville Vertical Direction 3,50 3,00 2,50 2,00 1,50 50

10 Average Train Induced Vibration University of Louisville Horizontal (East-West) Direction 3,50 3,00 2,50 2,00 1,50 50

11 Average Train Induced Vibration University of Louisville Horizontal (North-South) Direction 2,00 1,80 1,60 1,40 1,

12 Peak Train Induced Vibration University of Louisville Vertical Direction 10,00 9,00 8,00 7,00 6,00 5,00 4,00 3,00 2,00

13 Peak Train Induced Vibration University of Louisville Horizontal (East-West) Direction 9,00 8,00 7,00 6,00 5,00 4,00 3,00 2,00

14 Peak Train Induced Vibration University of Louisville Horizontal (North-South) Direction 4,50 4,00 3,50 3,00 2,50 2,00 1,50 50

15 Table 1- Ambient Vibration at Different Sites of University of Louisville Site Average Vibration in Vertical Average Vibration in (E-W) Average Vibration in (N-S) Peak Vibration in Vertical Peak Vibration in (E-W) Peak Vibration in (N-S) Stoddard , Johnson School Health and Science Center Reynolds Building Near Graphic , , , Building 1, , , , ,65 2, , ,50 1, Table 2- Train Induced Ground Vibration at Different Sites of University of Louisville Site Average Vibration in Vertical Average Vibration in (E-W) Average Vibration in (N-S) Peak Vibration in Vertical Peak Vibration in (E-W) Peak Vibration in (N-S) Stoddard , Johnson School , , Health and Science Center Reynolds 2, , , , , , , , , , , , , ,83 3, , , ,262.4 Building Near Graphic 2,93 1, , , , , , ,40 3, , , , ,249.0 Building 1, , , , ,65 2, , ,50 1,