About half of the projects I do are deformation surveys. Every millimeter counts when you are trying to get 3 mm overall accuracy on large structures....

That value is only good in a small area around the benchmark. The geoid slopes usually perpendicular to a shoreline, for the reason that there is ofte...

Not a chain as in one with links, but when i started on a USACE crew in the early 80's we only had one EDM for several crews (an HP3805). So, I starte...

We just last week completed our third annual subsidence survey of an area above the land portion of a deep salt mine. The mine access is on land, but ...

I still think they should require a pilot certificate for commercial operations. They did say they would have to keep the drones in line of sight cont...

Chris: my digital level does not have an option for BF..FB on alternating setups. However, it does have an option for BFFB on the same setup, which sh...

Dave: I have not actually seen any of the data, at this point I am just "advising". But, the surveyor at my client who has looked at the data says tha...

That is something we discussed. They set 60 TBM's, and I don't know how many targets for the mapping. So the mapping will match the TBM's left behind....

Loyal-not nearly as high up as you are. I don't actually know what direction this project is (I haven't see any of it, just helping out a client), so ...

As James Johnston would say....I see nothing wrong at all with you trying to learn. Maybe if some of the surveyors I see would put more effort into le...

Bizarre leveling procedureThat is kinda what I think...this is a poor reflection on the quality of government survey techs. I thought that all the DOT...

Bizarre leveling procedureThey were 50 feet apart.And, if you are so far away that you can't read the numbers, you are too far.

Bizarre leveling procedureI had to drive by three times before I could believe what they were doing.

I would point out that strictly speaking, a Julian Date is the number of days since January 1st, 4713 BC. Somehow it has become common practice to ref...

Bizarre leveling procedureI just went out to lunch, and saw a DOT crew running levels. Non-digital level, 25' fiberglass rod. Four man crew...rod man,...

Wow, that is amazing that you don't have the capability to enter pojt info with the Sokkia.I will be the first to say that the Zeiss M5 format could d...

I would say definitely not.

we write down the elevation at each point we want to process (i.e. BM, TBM, traverse station, etc). This helps in case a number was entered wrong or n...