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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: Custom surveying equipment

Richard Imrie, post: 441715, member: 11256 wrote: We "did" a pool recently, fortunately just before the pads were installed, to cut back the tiled end...

9 years ago
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RE: Releasing Topographic survey to non-original client

I would generally agree with you but iIt all depends on the contract. We use a clause which states that we retain copyright, but the client (and those...

9 years ago
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RE: Custom surveying equipment

Last one!This device enables verticality to be measured underwater to 1mm accuracy. It was designed for use in competition swimming pools.One of the p...

9 years ago
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RE: Custom surveying equipment

Precision probing. This little device was designed to get at a precision bearing face, where the gap to get in was less than 2cm. (and at arms length)...

9 years ago
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RE: Custom surveying equipment

Things to get where you cannot reach - these were used on various mechanical plant to get levels.The yellow device has two scales reading from the bas...

9 years ago
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RE: Custom surveying equipment

Another thing held in the air. We needed to monitor a number of houses with (rapidly) ongoing settlement, so exactly the same point was needed eqch t...

9 years ago
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RE: Custom surveying equipment

This thread prompted me to dig in the store - quite a collection so I'll make several posts.We had a viaduct to survey for new bearer pads. The client...

9 years ago
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RE: Releasing Topographic survey to non-original client

Colekracker, post: 441603, member: 12947 wrote: I believe your only obligation is to your original client.Colecracker is correct. Professionally and e...

9 years ago
Topic
9 years ago
Replies: 1
Views: 785
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RE: EDM observation in the zenith direction

Conrad, post: 440896, member: 6642 wrote: the standard leica prisms are front heavy and specifically employ friction to keep them from drooping. they ...

9 years ago
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RE: EDM observation in the zenith direction

With a normal prism you'll probably need a bit of sticky tape to hold it in place for the "horizontal" shot, otherwise gravity will rotate it to face ...

9 years ago
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RE: EDM observation in the zenith direction

A 360 prism with the axis fixed horizontally rather than vertically might do the trick

9 years ago
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RE: Suggestions for underwater survey

If the 8 metres is low tide then the water depth is probably going to be 12-15 metres at high tide. That's not going to be practical to pump out betwe...

9 years ago
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RE: Suggestions for underwater survey

Should have asked this earlier - if it is salt water is the 8 metre depth at high or low tide and what is the tidal range?

9 years ago
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RE: Suggestions for underwater survey

jim.cox, post: 440069, member: 93 wrote: If you do really want to get a genuine 2mm accuracy I would be thinking coffer dam and some big pumps To get...

9 years ago
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RE: Suggestions for underwater survey

Apart from the obvious question of why the lines weren't marked when the slipway was being constructed (I'm assuming that since it is smooth enough to...

9 years ago
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RE: How much Ground Control

My comment was referring to the spacings Mighty Moe was comparing and explaining why the manned aircraft needed much less control. If you compare trad...

9 years ago
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RE: Emlid Reach RS GNSS

I've done a little testing on one that a client has - comparing the Reach results with a Trimble R6 set on the same tripods and using an R6 as a base ...

9 years ago
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RE: How much Ground Control

MightyMoe, post: 437831, member: 700 wrote: We did a lidar project with an aerial mapping company in 2013, they needed only about a dozen ground contr...

9 years ago
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RE: Arrrgggggg!

Minor correction - I misread NI2 as NA2

9 years ago
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