Forums: Climbing Information: The Lab: Re: [qwert] Holding power of ice screws: Edit Log


Jan 25, 2009, 2:59 AM

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Re: [qwert] Holding power of ice screws
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Another thing they did test was the holding power of V-threads in ice.
In the first article (the waterfall one) they mention that a drilled v thread with side lengths of 15cm is sufficient, and better than natural v-threads, but they dont give more data on that.
However in the second article (the glacier ice one) they have more data on v-threads.
There they used different screw lengths to drill v-threads (as equilateral triangles) and measured the holding powers compared to the areas of the triangles

They say that these holding powers are a bit lower than expected, and suggest 16cm screws as the minimum length for the construction of v-threads


(This post was edited by qwert on Jan 25, 2009, 2:59 AM)
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Post edited by qwert () on Jan 25, 2009, 2:59 AM

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