General Climbing Discussion

Topic	Date	User
buying boulders	24-Jun-2013 At 12:21:10 PM	Snappy
Message
Seeing as I am interested now: http://lmrwww.epfl.ch/en/ensei/Rock_Mechanics/ENS_080312_EN_JZ_Notes_Chapter_4.pdf Page 2. Granite: Dry density: 2.53 – 2.62 Porosity:1.02 – 2.87% Rhyolite: Dry density:2.40 – 2.60 Porosity:0.40 – 4.00% Sandstone: Dry density: 1.91 – 2.58 Porosity:1.62 – 26.4% Another way of looking at it that has nothing to do with geology: I have picked up small granite, rhyolite and sandstone blocks and found I could lift different sizes of each, ergo, different mass per volume

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