Product Manual

Page 19
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A
1R
= internal area of inner ring, cm
2
Δt = time interval, h
9.1.2 For the annular space between rings, calculate as follows:
V
A
= ΔV
A
/(A
A
· Δt)
Where:
V
A
= annular space incremental infiltration velocity, cm/h
ΔV
A
= volume of liquid used during time interval to maintain constant head in the
annular space between the rings, cm
3
A
A
= area of annular space between the rings, cm
2
Δt = time interval, h
10. Report
10.1 Report the following information in the report, field records, or both:
10.1.1 Location of test site.
10.1.2 Dates of test, start and finish.
10.1.3 Weather conditions, start to finish.
10.1.4 Name(s) of technician(s).
10.1.5 Description of test site, including boring profile, see 10.1.11.
10.1.6 Type of liquid used in the test, along with the liquid’s pH. If available, a full
analysis of the liquid should also be recorded.
10.1.7 Areas of rings and the annular space between rings.
10.1.8 Volume constants for graduated cylinders or Mariotte tubes.
10.1.9 Depth of liquid in inner ring and annular space.
10.1.10 Record ground and liquid temperatures, incremental volume
measurements, and incremental infiltration velocities (inner ring and
annular space) versus elapsed time. The rate of the inner ring should be
the value used if the rates for inner ring and annular space differ. The
difference in rates is due to divergent flow.
10.1.11 If available, depth to the water table and a description of the soils found
between the rings and the water table, or to a depth of about 1 m (3 ft.).
10.1.12 A plot of the incremental infiltration rate versus total elapsed time (See
Page 18).
10.2 An example field record (See Page 19).