In your opinion, what skill training do our land surveying technicians need to progress beyond being button pushers? Field procedures for GNSS. Speci...

@ Norman_Oklahoma For the record, I’ve long felt that the common box tape is way too floppy to accurately measure the instrument height. Especially in...

@ OleManRiver Try searching also for the 5 rules of contours. Found them. Every point on a contour line is of the exact same elevation. In other word...

@ dave-o To get flow paths across land you can use Civil 3D on an existing and proposed surface to “drop water” along your ridgelines or boundaries an...

@ OleManRiver I have an old book from the military that would be awesome for teaching contours. Maybe I can get the book from the Internet. What's the...

@ chris-bouffard I am curious as to why you are studying this, aside from understanding contours. Please see my reply to MightyMoe.

@ holy-cow There is no simple answer to hydrology. It is a complex situation dependent on a number of variables and “magic” numbers. Dig into the mate...

@ BStrand As far as the contour interval to choose I suppose it depends on the grade of the slope and the scale of the drawing. For example, if you us...

@ MightyMoe It’s a big subject you’re undertaking. This course is a prerequisite for SUR 2460C SUBDIVISIONS. Introduction to the residential subdivisi...

@ james-fleming Rule of v's. Thanks. This is very helpful.

@ Norman_Oklahoma The really old school way to determine a watershed area is to start at the point of concentration and draw a continuous line that cr...

Why are people using these forums for marketing? This is the second time this has happened to me. Both incidents have occurred recently.

@ OleManRiver Are they all positive or negative or do they go both ways. Pt. # 1134, 0.035′ difference, 271.6′ from beginning BM Field El. = 96.760 ...

@ chris-bouffard What kind of differences are you seeing between published and observed values? A few hundredths, or tenths? Pt. # 1134, 0.035' differ...

@ OleManRiver So were you on level crew Iman two rod persons . No. PC, I-man (me), rod person. If you can come message me i will make sure to buy you ...

@ chris-bouffard The last time I spoke with my field crew supervisor concerning multiple elevations on BMs from the other run he said he's going to av...

@ chris-bouffard Those three BMs now have multiple elevations on them.” What purpose does adding yet another elevation serve? See Surveying Theory and...

@ chris-bouffard It seems to me that, based on the method mandated, the mandate for the procedure was dictated by office staff. It was not. We thought...