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Bolt testing done in Muir Valley.
ID 105963752 ·

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May 18, 2007
Bolt testing done in Muir Valley.  
Watertown, MA
cjdrover   Watertown, MA
Sean - the pic is of a short ~10 foot outcropping that everyone hikes past on the way in. The landowners did some testing of various bolts on the Corbin sandstone to determine what was most appropriate for use in the area. Feb 1, 2011
Ty Harlacker
Albuquerque, NM
Ty Harlacker   Albuquerque, NM
That's some bomber sandstone; except for those two that pulled. Looks like one of the hangers failed as well. I wonder how much force was applied before fail. Was a load-cell used? Apr 29, 2011
S. Neoh  
This post is but one of several if you choose to scan the web for more on the pull-tests done at Muir -… Apr 29, 2011

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