3 + 25, 3 + 53, and 3 + 77. These examples are plusstations of station 3 + 00.LINE STAKESLine (or alignment) stakes mark the horizontallocation of the earthwork to be completed and give theFigure 15-24.—Combined alignment and grade stake.Figure 15-25.—Centerline stakeFigure 15-26.—Station numbers.direction of the proposed construction. Running overstakes or otherwise damaging the stakes before theyhave served their purpose results in many hours ofextra work to replace them and delay in the completionof the project. Rough alignment stakes are placed farahead of the clearing crew to mark boundaries of thearea to be cleared and grubbed. These stakes, ormarkers, are not of a control nature and their loss isexpected. On some stakes, the alignment informationand the grade requirement are combined on the samestake (fig. 15-24).Centerline StakesStakes set along the center line of a project areknown as centerline stakes and are identified by letters,as shown in figure 15-25. Most stakes are marked onboth the front and back.On centerline stakes, the station number is writtenon the front of the stake, such as 0 + 00, 1 + 00, 4 + 75,and 5 + 25 (fig. 15-26).The required grade is always established at thecenter line of the project. The amount of change inelevation is written on the back of the centerline stakewith a cut- or- fill symbol, which is known as the crow-foot (fig. 15-27). The “crowfoot” is the reference pointof the vertical measure or grade.Figure 15-27.—Cut-and-fill crowfoot symbol.15-17
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