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Eugene City Hall R32.19.04 Rev. B. September 9, 2003 <br /> <br />Figures 2-11 and 2-12 show the typical layout of the parking level. The floor system of <br />the main level makes up the roof level of the parking level - it is a concrete slab using <br />waffle-style rib construction for support. This waffle slab in turn is supported by <br />reinforced concrete columns at 35 foot spacing. This rather wide spacing is permitted at <br />the waffle slab is reinforced using high tensile steel tendons. <br /> <br /> Figure 2-11. Parking Level <br /> "',,, ,, ;~ ~.,'~r ,'~',,~'?~ ~:,, ' ..~.,,,~'¥'~:"'"'~' .~'~' ~ <br /> <br /> Figure 2-12. Parking Level <br /> <br /> Along the exterior of the building, there are reinforced concrete retaining walls located <br /> between the columns; these retaining walls do not have expansion joints at the columns, <br /> and thus create a serious structural weakness in that the columns adjacent to the walls <br /> have "short column" deficiencies. Based upon drawing reviews (1995b), the columns <br /> have modest vertical steel plus very light hoop steel (#3 ties at 16" spacing for main floor <br /> <br /> G&E Engineering Systems Inc. Page 10 <br /> <br /> <br />