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# = weighed wet a day later (but kept cold to reduce water loss)
Wiki Markup
Here is a quick comparison of the weights of various objects with the borrowed scale and ours. The borrowed scale read within 1g, so I wouldn't change any of the above readings.
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Site/Time | Depth | ID | Tare (g) | Wet (g) | Dry (g) | Rho-dry | Qsoil | Volume Fraction | Comments | ||||||||
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1 | 0-3 | 1-0 | 3.4 | 135.6 | 107.3 | 1.57 | 21 | 43 |
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17 Jan 0835 | 3-6 | 1-6 | 3.5 | 163.3 | 138.4 | 2.03 | 16 | 37 | May have been compressed | ||||||||
2 | 0-3 | 4-0 | 3.6 | 92.0 |
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| 73.3 | 1.05 | 21 | 28 | a bit frozen | |||||
18 Jan 0828 | 3-6 | 4-6 | 3.8 | 96.3 |
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| 86.8 | 1.25 | 10 | 14 |
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3 | 0-3 | 2-0 | 3.6 | 69.5 | 38.5 | 0.53 | 47 | 47 | grass | ||||||||
17 Jan 1010 | 3-6 | 2-6 | 3.7 | 138.3 | 111.1 | 1.62 | 20 | 41 |
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4 | 0-3 |
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| 1-0 | 3.5 | 131.1 | 108.9 | 1.59 | 17 | 33 |
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19 Jan 1140 | 3-6 |
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| 1-6 | 3.5 | 132.1 | 111.3 | 1.62 | 16 | 31 |
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5 main | 0-3 | 3-0 | 3.3 | 113.1 | 82.8 | 1.20 | 28 | 46 | water (frozen) | ||||||||
17 Jan 1120 | 3-6 | 3-6 | 3.6 | 112.1 | 89.5 | 1.29 | 21 | 34 |
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5 aux | 0-3 | 4-0 | 3.6 | 124.8 | 105.2 | 1.53 | 16 | 30 |
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17 Jan 1132 | 3-6 | 4-6 | 3.8 | 120.1 | 104.8 | 1.52 | 13 | 23 |
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6 | 0-3 |
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| 5-0 | 3.8 | 110.2 | 86.8 | 1.25 | 21 | 35 |
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19 Jan 1420 | 3-6 |
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| 5-6 | 3.4 | 131.7 | 112.0 | 1.63 | 15 | 30 |
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6 aux | 0-3 |
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| 3-0 | 3.4 | 139.5 | 113.5 | 1.66 | 19 | 39 |
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19 Jan 1425 | 3-6 |
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| 3-6 | 3.6 | 129.0 | 104.6 | 1.52 | 19 | 37 |
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7 | 0-3 | 5-0 | 3.8 | 90.9 | 48.7 | 0.68 | 48 | 64 | water (frozen) | ||||||||
17 Jan 1221 | 3-6 | 5-6 | 3.4 | 112.4 | 82.6 | 1.19 | 27 | 45 | water |
ROUND THREE:
John, Tom, and Steve S
We tared the scale prior to weighing the wet soil (net), weighed the dry soil + pan (total), then subtracted the pan wt to get the dry soil (net).
I mistakenly started weighing the soil in ounces, so we continued this in order to make a consistent table.
Ring diameter = 2 3/32" = 2.094" = 5.319 cm; volume = 66.66 cm^3; 1 oz = 28.35 gm
Qsoil = 1 - dry/wet; h2o volume fraction = (wet-dry)/(1 gm per cm^3)/sample-volume
Site | Time | Depth | Tray ID | Tare | Wet Wt | Dry Wt | Dry Wt | rho-dry | Qsoil | h2o vol fraction |
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1 | Jan 30 10:45 | 0-3 | 4-0 | 0.130 | 2.845 | 1.575 | 1.445 | 0.615 | 47 | 54 |
| water | 3-6 | 4-6 | 0.135 | 4.700 | 3.900 | 3.765 | 1.601 | 18 | 34 |
2 | Jan 29 14:30 | 0-3 | 4-0 | 0.130 | 3.825 | 3.440 | 3.310 | 1.408 | 10 | 16 |
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| 3-6 | 4-6 | 0.135 | 4.400 | 4.185 | 4.050 | 1.722 | 5 | 9 |
3 | Jan 28 14:30 | 0-3 | 3-0 | 0.120 | 3.195 | 3.120 | 3.000 | 1.276 | 2 | 3 |
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| 3-6 | 3-6 | 0.125 | 4.810 | 4.100 | 3.975 | 1.691 | 15 | 30 |
4 | Jan 28 11:15 | 0-3 | 2-0 | 0.120 | 2.365 | 2.045 | 1.925 | 0.819 | 14 | 14 |
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| 3-6 | 2-6 | 0.130 | 4.875 | 4.335 | 4.205 | 1.788 | 11 | 23 |
5 main | Jan 27 14:31 | 0-3 | 4-0 | 0.130 | 3.060 | 2.525 | 2.395 | 1.019 | 18 | 23 |
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| 3-6 | 4-6 | 0.135 | 3.790 | 3.395 | 3.260 | 1.386 | 11 | 17 |
5 aux | Jan 27 14:55 | 0-3 | 5-0 | 0.140 | 3.625 | 3.130 | 2.990 | 1.272 | 14 | 21 |
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| 3-6 | 5-6 | 0.120 | 2.495 | 2.390 | 2.270 | 0.965 | 4 | 4 |
6 main | Jan 24 11:45 | 0-3 | 4-0 | 0.135 | 4.415 | 3.305 | 3.170 | 1.348 | 26 | 47 |
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| 3-6 | 4-6 | 0.125 | 5.705 | 4.890 | 4.765 | 2.027 | 15 | 35 |
6 aux | Jan 24 12:15 | 0-3 | 2-0 | 0.135 | 3.420 | 2.715 | 2.580 | 1.097 | 21 | 30 |
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| 3-6 | 2-6 | 0.130 | 4.775 | 4.094 | 3.964 | 1.686 | 15 | 29 |
7 | Jan 27 16:18 | 0-3 | 1-0 | 0.125 | 3.115 | 2.200 | 2.075 | 0.882 | 31 | 39 |
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| 3-6 | 1-6 | 0.125 | 3.635 | 2.785 | 2.660 | 1.131 | 24 | 36 |
P.S. (18 Apr 2011): All calculations seemed off in Round 3, reran and edited above entries.