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In column 'I' of 'GL' sheet, enter rough RL of top levels at some intervals. Enter these RLs in same row in which chainage value in column 'A' is present. RL of first and last chainage is must. You can use formula also.
Note: Instead of entering RLs, you can draw a Pline in final L Section, if you know 'Pline' command and some knowledge of 'osnap' in AutoCAD.Top Next