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"BP - \"where heavy conservationists hang out\"" <[log in to unmask]>
Subject:
Re: Granite
From:
David west <[log in to unmask]>
Date:
Mon, 2 Aug 1999 23:22:53 +0100
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"BP - \"where heavy conservationists hang out\"" <[log in to unmask]>
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The density of granites used in building ranges from about:

160 lbs/ft3 = 2560 kg/m3

up to

190 lbs/ft3 = 3040 kg/m3

Rough numbers, but close enough.

Light grey and red true granites are down in the 160-170 lbs/ft3 range, whilst dark green and dark grey can range up through 170-180 lbs/ft3 and black granites (not truly granites) are typically in the 180-190 lbs/ft3 range.

Rule of thumb ... use 190 lbs/ft3 if the dimensions are approximate and the type of granite unknown, or 170 lbs/ft3 if you know the dimensions and the type of granite is not a black or dark green or dark grey.

Hope this helps

david

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