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3. Engineering Review of Tanks & Equipment Covered by CalARP Program C:\TRICH\Jobs\4515582 Leprino Tracy\Report\Leprino Tracy CalARP 040221.docx 3-9 vestibule. Each unit appears to be supported by four hangers at the top four corners of the units. All hangers appear to be approximately 12 inches or less below the support framing. Transverse and longitudinal bracing recommended in previous CalARP evaluations has been installed. Rail Vestibule Evaporative coils EV-13 (Figures 3-64 and 3-65), EV-14 (Figures 3-66 and 3-67) and EV-15 (Figures 3-68 and 3-69) are suspended from the roof framing of the rail vestibule. Each unit appears to be supported by four hangers at the top four corners of the units. All hangers appear to be approximately 12 inches or less below the support framing. Transverse and longitudinal bracing recommended in previous CalARP evaluations has been installed. Product Cooler Evaporative coils EV-18 and EV-19 are suspended from the roof framing of the product cooler. Each unit appears to be supported by four hangers that are part of two trapezes at the bottom of the units (Figure 3-70). The units are braced in the transverse direction by Unistrut type struts to the adjacent wall at each end of both units at the top and bottom of the units (Figure 3-71). It is unknown what strut members were used, but they appear to be marginal. Based on site observations, it appears the adjacent wall is a masonry partition wall with wood furring. It is unknown whether the struts are anchored to the masonry wall or furring or how the furring is attached to the masonry. In the longitudinal direction, the units appear to be connected by similar struts at the top of the units which are in turn attached to the bottom of a roof glue laminated girder (Figure 3-72). The struts and connection to the roof girder appear marginal. It is recommended that additional analysis be performed to confirm the adequacy of the existing bracing and design any new bracing as necessary. Glycol Room 1 The Glycol Chiller GCH-1 and AV-306 are well mounted to a support frame with twelve support legs (Figures 3-73 to 3-75). Based on recommendations from the previous evaluation, all support skid legs have been anchored with a ½-inch diameter anchor (Figure 3-76). The result of our anchorage analysis is a maximum DCR ratio of 0.69 indicating that the existing anchorage is adequate. This result is based on ½-inch diameter post installed expansion anchors with an embedment of 3 ¼-inches. If actual