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chris-mills
chris-mills
@chris-mills
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Joined: March 6, 2012 11:30 am
Topics: 9 / Replies: 706
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RE: What were you surveying on 9-11-2001?

I was local to our office, just been surveying a boundary. Switched on the radio as I got back into the car and the news was just breaking - no detail...

7 years ago
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RE: high altitude drones

@gigharborsurveyor Not really off topic - we have done a couple of jobs to provide high resolution imagery to determine ground cover. The biggest pro...

7 years ago
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RE: high altitude drones

@gigharborsurveyor I can't make much comment - Quest are supplying data and a fixed wing UAV to the military - nothing sinister as far as I know, but...

7 years ago
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RE: Tripod question

@scott-ellis Nice shiny tripods - part of a seven tripod survey for monitoring movement on a pumping station - all stations set-up in one go, so the ...

7 years ago
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RE: high altitude drones

John, Depending upon exactly what the job is, one of the QuestUAV fixed wing aircraft may be what you need. We use a standard Q200, but they do high a...

7 years ago
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RE: Tripod question

@rj-schneider The paint we use is made by AkzoNobel under their brand name International - Toplac. It's a form of enamel paint and they do specific p...

7 years ago
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RE: Tripod question

@scott-ellis Yes, really nice and shiny; the cow s*** just falls off them! We've kept more or less to the original Wild/Leica colours - yellow for th...

7 years ago
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RE: Tripod question

I should have said - mine are GST20's, except for 4 GST70 centre pods.

7 years ago
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RE: Tripod question

@scott-ellis They should last much longer! My first ones, 1980, are still going strong and probably have another 20 years life left in them. The top ...

7 years ago
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RE: Measuring power line sags.

To clarify, exact time is essential - load changes can cause substantial movement in seconds. I once observed a 275kV line drop by over 0.3m in a ten ...

7 years ago
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RE: Terrestrial photogrammetry with a pole

We've used the Sony A6000 from our fixed wing UAV to fill in face detail on buildings, etc. It's a bit trial and error, but if the air photography alr...

7 years ago
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RE: Leveling technique?

I'd have posted earlier, but I was out using our pair! To get over the refraction bias we still generally do the run each way when we can. Probably mo...

7 years ago
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RE: Daycare survey

Try lifting drain covers when the kids are around. Be sure to let them see what floats past.

7 years ago
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RE: Daycare survey

Agreed, parents are the biggest hazard, followed closely by the teachers. We've tried to educate the local architects to plan in advance (some hope) a...

7 years ago
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RE: Bad day

A few years ago we were surveying a number of existing filling stations (=Gas station in American) for MOBIL Oil. Carried out the days work, processed...

7 years ago
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RE: Letƒ??s go Metric they said, Itƒ??ll be fun they said...

Excellent - a practical approach always trumps (note: small t) theory.

7 years ago
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RE: Letƒ??s go Metric they said, Itƒ??ll be fun they said...

Don't you believe it. 47 years after "metrication" I go down the woodyard for a sheet of plywood and come back with one which measures 2.44m x 1.22m (...

7 years ago
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RE: Letƒ??s go Metric they said, Itƒ??ll be fun they said...

A trust you are cutting better than a hundreth of a foot, or its going to be a very wobbly stand! (it will certainly be "least" square!)

7 years ago
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RE: Letƒ??s go Metric they said, Itƒ??ll be fun they said...

Not being a *rough* Canadian, my pace IS a yard. So 100 ft has always been 33 steps plus a shoe length. 30 metres becomes 33 steps minus a shoe length...

7 years ago
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RE: Payments by check

Depending on the type of work being undertaken you can build in some extra "cover" in your quotation and on the drawing. Where appropriate we include...

7 years ago
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