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Reply to "Difference between cal and course surface"

We have measured several courses that had "not insignificant" grass or dirt segments .  For the first few (CT13038JHP, CT13018JHP and CT10040JHP), we measured a 300-Ft cal course on the dirt or grass and determined a dirt or grass constant.  The idea being that if the dirt or grass constant was larger than the road constant, we would layout a 1000-ft cal course on the dirt or grass and use it for the "not insignificant" segment.  We stopped doing this after 2 or 3 times as the dirt or grass constant was always smaller than the road constant.

 

Pete Reigel did write that, as Oscar noted, that calibrating on pavement and measuring on dirt or grass would prevent a short course.  Also, didn't Mike Sanford do a very complete study of the impact of calibration course surfaces on the constant (therefore the measured course length)?

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