Author Topic: small hangers for surveying  (Read 2864 times)

Online Dave Tyson

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small hangers for surveying
« on: February 06, 2014, 05:43:24 pm »
In quite a few caves & mines there seem to be some small hangers in the roof for surveying. They appear to be a push fit in a small (ca 5mm hole) and have a small eye at the bottom to attach a tag or target for laser surveying. I have so far failed to find a name or source using google and a variety of  plausible terms. Can someone enlighten me as to what they are called or even better a reasonably priced source...

Cheers,
Dave

Offline kdxn

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Re: small hangers for surveying
« Reply #1 on: February 06, 2014, 08:36:05 pm »
The technical term for these hangers is Spad, not so much mining here in UK so you may have to get some from US.
http://minerox.com/index.cfm?fuseaction=product.display&product_ID=1129&ParentCat=40

York Survey Supply offer a number of Brass Survey Markers.
http://www.yorksurvey.co.uk/marking/brass-markers/

Alternatively you can drill a hole and leave it as is or stick something in it to help find it again.
Plastic Cow Tags have been used, pushed into a drilled hole.

Geocke do an extensive range of surveying markers and tools including some specialist tunneling stuff
http://goecke.de/Products/?XTCsid=9dce982386270df6b659003ac6500e98

If you are going to use a metal marker, consider the implications for your Magnetic Compass or DistoX.

Offline Lampwick

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Re: small hangers for surveying
« Reply #2 on: February 06, 2014, 08:41:35 pm »
Are we nearly there yet?

Online Dave Tyson

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Re: small hangers for surveying
« Reply #3 on: February 06, 2014, 08:58:04 pm »
Try these from ToolStation: Wire hanger, M6 x 50mm.  Code 70229.

http://www.toolstation.com/shop/Screws+Fixings/Steel+Anchors/Wire+Hanger+M6+x+50mm/d90/sd2040/p70229

Thanks for that, they look just the job  :)

Cheers,
Dave


Offline cavermark

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Re: small hangers for surveying
« Reply #4 on: February 06, 2014, 09:08:39 pm »
Would these mounts for cable ties be any good?   

http://www.fixfirm.com/product/index/R121-001_LOK01_Cable_Tie_Mounts

Online Dave Tyson

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Re: small hangers for surveying
« Reply #5 on: February 06, 2014, 09:25:58 pm »
Would these mounts for cable ties be any good?   

http://www.fixfirm.com/product/index/R121-001_LOK01_Cable_Tie_Mounts

I'd seen these before, but never thought about them for this application. Look very useful and wouldn't rust either!

Cheers,
Dave

Offline cavermark

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Re: small hangers for surveying
« Reply #6 on: February 06, 2014, 10:01:53 pm »
Easy to drill out out of the hole if no longer wanted too.

Offline nickwilliams

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Re: small hangers for surveying
« Reply #7 on: February 06, 2014, 10:37:41 pm »
Try these from ToolStation: Wire hanger, M6 x 50mm.  Code 70229.

http://www.toolstation.com/shop/Screws+Fixings/Steel+Anchors/Wire+Hanger+M6+x+50mm/d90/sd2040/p70229

Thanks for that, they look just the job  :)

Cheers,
Dave

I can post you a couple of those to play with if you'd like to PM me your address.

Nick.
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Online Dave Tyson

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Re: small hangers for surveying
« Reply #8 on: February 06, 2014, 11:12:42 pm »
[

I can post you a couple of those to play with if you'd like to PM me your address.

Nick.

Thanks for your kind offer Nick,  however the local toolstation is only 2 miles away and at 97p for 10 its not going to break the bank!

Cheers,
Dave

Offline SamT

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Offline andrew

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Re: small hangers for surveying
« Reply #10 on: February 07, 2014, 07:11:02 pm »
The plastic ones are probably better, for 2 reasons:

  • Do not interfere with the compass, so your survey will be correct
  • Are removable, and will not rust; the metal ones are hard to get out, you at least need tools, and at they rust that is hardly the choice of anyone that is conservation minded

Offline SamT

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Re: small hangers for surveying
« Reply #11 on: February 07, 2014, 08:29:44 pm »

Sorry - didn't see those plastic ones - spot on them   :thumbsup:

We've used red rawl plugs as survey station markers, small enough to not notice, obvious enough if you know what your looking for in the right area. Only used on main points in the survey, obvious junctions etc.

Offline kdxn

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Re: small hangers for surveying
« Reply #12 on: February 07, 2014, 10:00:10 pm »
Those plastic cable tie markers look interesting, will get some to try out.

They are also available from toolstation, 100 pieces for £3.79.
http://www.toolstation.com/shop/Electrical/Cable+Management/Masonry+Knock+in+Mount+90mm+Black/d190/sd2460/p40215

Offline bograt

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Re: small hangers for surveying
« Reply #13 on: February 07, 2014, 11:15:55 pm »
Think about A light weight drill to pop them in, doesn't have to be SDS.
Aim low, achieve your goals, avoid disappointment

Offline sluka

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Re: small hangers for surveying
« Reply #14 on: February 17, 2014, 06:56:20 pm »
Check this page - plenty of plastic anchors there:

http://www.essentracomponents.de/nieten-und-plattenbefestigungen

Offline cavermark

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Re: small hangers for surveying
« Reply #15 on: February 17, 2014, 10:41:16 pm »
Check this page - plenty of plastic anchors there:

http://www.essentracomponents.de/nieten-und-plattenbefestigungen

Some brilliant names there too - pass me that Kunststoffspreizniete - hitzebeständig!

Offline McMole

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Re: small hangers for surveying
« Reply #16 on: February 17, 2014, 11:06:41 pm »
I use those plastic cable ties when taping - at the ends of tape runs. To mark permanent survey stations I've used 6mm stainless steel (non-magnetic) coach bolts in a 5.5 mm hole - self tapping in limestone, and not easily removed without a spanner. They don't rust, and labels can be tied to them.

Offline sluka

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Re: small hangers for surveying
« Reply #17 on: February 18, 2014, 12:21:29 pm »
Some brilliant names there too - pass me that Kunststoffspreizniete - hitzebeständig!
I recomend Schnappnieten Typ “P” or Treibnieten  :)

Offline mulucaver

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Re: small hangers for surveying
« Reply #18 on: February 19, 2014, 07:56:01 am »
I use those plastic cable ties when taping - at the ends of tape runs. To mark permanent survey stations I've used 6mm stainless steel (non-magnetic) coach bolts in a 5.5 mm hole - self tapping in limestone, and not easily removed without a spanner. They don't rust, and labels can be tied to them.
To mark permanent stations I use Scotch reflective tape, punch a hole in a short length and push the plastic cable tie mount through  and into the drilled hole. The station name is marked on the tape with a permanent marker.
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