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| | |-+  What kind of column test is this?
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Author Topic: What kind of column test is this?  (Read 5276 times)
Edgesport
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Posts: 296


What kind of column test is this?
« on: 05/16/14, 01:00 PM »

Go to minute ( 2:24 ) and you'll see a guy balancing a column on-top of the shovel blade and tapping from the bottom.

http://backcountrymagazine.com/videos/mountain-account-escape-glacier-bay/


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Charlie Hagedorn
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WWW
Re: What kind of column test is this?
« Reply #1 on: 05/16/14, 01:35 PM »

Shovel tilt test. Googling turns up a number of references.
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Chris S
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Re: What kind of column test is this?
« Reply #2 on: 05/21/14, 11:58 AM »

The Shovel Tilt Test is an excellent tool for identifying weak interfaces in the near-surface snowpack, interfaces that are sometimes unidentified in compression tests because the compression destroys the near-surface layers before any failure can be noted. You'll see Mark Allen (IFMGA/AMGA Mountain Guide, and PNW local) perform an Extended Column Test afterwards, specifically watching for failure along the interface he identified with the Shovel Tilt Test.
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Chris
rlsg
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Re: What kind of column test is this?
« Reply #3 on: 05/23/14, 04:57 PM »

Ah..and near surface faceting (just read about this this season...pretty interesting though still a bit "over the head").
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