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r <br />f D. Manhole Steps <br />Manhole steps shall be cast into the concrete as indicated on the drawings. <br />Manhole steps shell be equal to ALCOA ALUMINUM STEP NO. 12653B an[I <br />shall be set at a maximum of i6 inches on centers. <br />E. Trash Racks <br />(1) Trash racks shall be constructed of the following bars: <br />r Bearing Bars: 2-1/2" x 1/4" Spacing: 3-3/16" on center <br />Cross Bars: 1/2" x 1/2" Spacing: Centered <br />(2) Trash racks shall be hot-dipped galvanized after fabrication in ar• <br />cordance with ASTM A-123. <br />1y <br />05100-7 <br /> <br />n <br />LJ <br />• <br />