Hello survey world. I have a question about the interval to use when staking bluetops for roadway construction. I work in the public sector and would like to know what the "norm" is for AB and subgrade intervals. I've always thought that 50' for subgrade and 25' for AB is the normal intervals but my supervisor would like to get a little feedback on this from the community. So any help will be greatly appreciated.
Here's what they do around here http://www.dot.state.ak.us/stwddes/dcsconst/assets/pdf/surveymanual/constsurveyrequire_0603.pdf
We always used 50' on highway work, unless there was something non-typical going on. Now its every .01' with machine control. If the operator has to go more than 10' without something on the screen he starts hollerin' about needing grade.
Fwiw, for bluetops we used to go every 50' on tangents, 25' on curves, and did all PCs, PTs, APs, VPCs and VPTs. This was about 17 years ago.
Thanks for the input. I will pass it along to my supervisor.