5) For a Sandy Loam soil, using Green-Ampt equation to calculate the infiltration rate (cm/hr) after 1, 60 and 15 minutes if the effective saturation is 40%. Assume a continuously ponded condition. Use Table 7.4.1l of the Textbook for identifying the soil parameters.

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This is for Water resources Engineering, the Table from the book is posted along with the question. Thank you. 

5) For a Sandy Loam soil, using Green-Ampt equation to calculate the infiltration rate
(cm/hr) after 1, 60 and 15 minutes if the effective saturation is 40%. Assume a
continuously ponded condition. Use Table 7.4.1 of the Textbook for identifying the soil
parameters.
Transcribed Image Text:5) For a Sandy Loam soil, using Green-Ampt equation to calculate the infiltration rate (cm/hr) after 1, 60 and 15 minutes if the effective saturation is 40%. Assume a continuously ponded condition. Use Table 7.4.1 of the Textbook for identifying the soil parameters.
Table 7.4.1 Green-Ampt Infiltration Parameters for Various Soil Classes*
Effective
Wetting front
Hydrau lic
conductivity
K (cm/h)
Porosity
porosity
soil suction
Soil class
head y (cm)
Sand
0.437
0.417
4.95
11.78
(0.374-0.500)
0.437
(0.354-0.480)
(0.97-25.36)
Loamy sand
0.401
6.13
2.99
(0.363-0.506)
(0.329-0.473)
0.412
(0.283-0.541)
(1.35–27.94)
11.01
(2.67-45.47)
Sandy loam
0.453
1.09
(0.351-0.555)
Loam
0.463
0.434
8.89
0.34
(0.375-0.551)
(0.334-0.534)
(1.33-59.38)
Silt loam
0.501
0.486
16.68
0.65
(0.420-0.582)
(0.394 0.578)
(2.92-95.39)
Sandy clay loam
0.398
0.330
21.85
0.15
(0.332-0.464)
(0.235-0.425)
0.309
(0.279-0.501)
(4.42–108.0)
Clay loam
0.464
20.88
0.10
(0.409-0.519)
(4.79-91.10)
Silty clay loam
0.471
0.432
27.30
0.10
(0.418-0.524)
(0347-0.517)
0.321
(0.207-0.435)
0.423
(5.67-131.50)
Sandy clay
0.430
23.90
0.06
(0.370-0.490)
(4.08–140.2)
Silty clay
0.479
29.22
0.05
(0.425-0.533)
(0.334-0.512)
(6.13–139.4)
31.63
Clay
0.475
0.385
0.03
(0.427-0.523)
(0.269-0.501)
(6.39–156.5)
* The numbers in parentheses below each parameter are one standard deviation around the parameter value given.
Source: Rawls, Brakensick, and Miller (1983).
Transcribed Image Text:Table 7.4.1 Green-Ampt Infiltration Parameters for Various Soil Classes* Effective Wetting front Hydrau lic conductivity K (cm/h) Porosity porosity soil suction Soil class head y (cm) Sand 0.437 0.417 4.95 11.78 (0.374-0.500) 0.437 (0.354-0.480) (0.97-25.36) Loamy sand 0.401 6.13 2.99 (0.363-0.506) (0.329-0.473) 0.412 (0.283-0.541) (1.35–27.94) 11.01 (2.67-45.47) Sandy loam 0.453 1.09 (0.351-0.555) Loam 0.463 0.434 8.89 0.34 (0.375-0.551) (0.334-0.534) (1.33-59.38) Silt loam 0.501 0.486 16.68 0.65 (0.420-0.582) (0.394 0.578) (2.92-95.39) Sandy clay loam 0.398 0.330 21.85 0.15 (0.332-0.464) (0.235-0.425) 0.309 (0.279-0.501) (4.42–108.0) Clay loam 0.464 20.88 0.10 (0.409-0.519) (4.79-91.10) Silty clay loam 0.471 0.432 27.30 0.10 (0.418-0.524) (0347-0.517) 0.321 (0.207-0.435) 0.423 (5.67-131.50) Sandy clay 0.430 23.90 0.06 (0.370-0.490) (4.08–140.2) Silty clay 0.479 29.22 0.05 (0.425-0.533) (0.334-0.512) (6.13–139.4) 31.63 Clay 0.475 0.385 0.03 (0.427-0.523) (0.269-0.501) (6.39–156.5) * The numbers in parentheses below each parameter are one standard deviation around the parameter value given. Source: Rawls, Brakensick, and Miller (1983).
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