Geology Reference
In-Depth Information
[D] Bearing Ratio Data
Weight of surcharge = 10 lb
Area of piston = 3.00 in. 2
Proving ring calibration = 74,000 lb/in.
Penetration
Proving Ring Dial
(in.)
Reading (in.)
0.000
0
0.025
0.0004
0.050
0.0008
0.075
0.0013
0.100
0.0016
0.125
0.0019
0.150
0.0020
0.175
0.0022
0.200
0.0023
0.300
0.0026
0.400
0.0030
0.500
0.0032
With these data known, necessary computations can be made as
follows:
[A] Water Content Determinations
The four required water contents may be computed as follows (see
Chapter 4):
Before compaction:
315.94 273.69
273.69 45.23
w
100
18.5 %
After compaction:
326.01 283.37
283.37 47.82
w
100
18.1 %
Top 1-in. layer after soaking:
304.71 261.53
261.53 43.44
w
100
19.8 %
Average moisture content after soaking:
356.37 305.82
305.82 46.59
w
100
19.5 %
These data, both given and computed, are shown on the form
on page 407. At the end of the chapter, two blank copies of this form are
included for the reader's use.
 
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