at the point of intersection with the hairline.
ANSWER:
72 cGy.
Problem 2.
GIVEN:
R1 = 300 cGyph
Te = H + 6 hours
D = 70 cGy
Soil Type III.
FIND:
Ts.
SOLUTION:
On Figure 5-10, connect 70 cGy on the D scale with 300
cGyph on the R1 scale.
Pin the hairline at its point of
intersection with the index scale. Pivot the hairline to H
+ 6 hours on the Te scale.
Read 1 hour on the Ts scale
(Soil Types I and III).
ANSWER:
1 hour.
Problem 3.
GIVEN:
D = 25 cGy
R1 = 100 cGyph
Ts = 0.4 hour
Soil Type III.
FIND:
Te.
SOLUTION:
On Figure 5-10, connect 25 cGy on the D scale and 100
cGy/hr on the R1 scale with the hairline.
Pivot the
hairline at its point of intersection with the index scale
to 0.4 hour on the Ts scale (Soil Types I and III). Read H
+ 3 on the Te scale at the point of intersection with the
hairline.
ANSWER:
H + 3 hours.
CM5206
5-34
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