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    arendvs's Avatar
    arendvs Posts: 1, Reputation: 1
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    #1

    Dec 12, 2007, 12:22 AM
    Height of water column vs pressure
    In an apartment block of 5 floors water is fed from tanks(reservoirs) at the top. What approximately is the pressure in bars versus the height in metres? None of the hot water cylinders have pressure reducing valves fitted.
    caibuadday's Avatar
    caibuadday Posts: 460, Reputation: 10
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    #2

    Dec 12, 2007, 05:16 PM
    Quote Originally Posted by arendvs
    In an apartment block of 5 floors water is fed from tanks(reservoirs) at the top. What approximately is the pressure in bars versus the height in metres? None of the hot water cylinders have pressure reducing valves fitted.
    assumed total height is 15.25 M(50ft); 50 x 0.433= 21.7, 21.7 + 14.7 =36.4, 36.4/ 14.7= 2.48 bars... a water column at 1 ft H would have the pressure of 0.433 psig or 15.1 psia
    bustamante's Avatar
    bustamante Posts: 1, Reputation: 1
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    Jul 14, 2010, 02:39 AM
    A piece of copper whose density is 8.9 gr/cc. weighs 200 grams. In water. What is the weight of copper in air? What is its volume?

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