{"id":886,"date":"2020-12-09T05:00:27","date_gmt":"2020-12-09T05:00:27","guid":{"rendered":"https:\/\/books.gw-project.org\/hydrogeologic-properties-of-earth-materials-and-principles-of-groundwater-flow\/?post_type=chapter&p=886"},"modified":"2020-12-10T00:28:40","modified_gmt":"2020-12-10T00:28:40","slug":"solution-to-exercise-3","status":"publish","type":"chapter","link":"https:\/\/books.gw-project.org\/hydrogeologic-properties-of-earth-materials-and-principles-of-groundwater-flow\/chapter\/solution-to-exercise-3\/","title":{"raw":"Solution to Exercise 3","rendered":"Solution to Exercise 3"},"content":{"raw":"3) Rank the materials from the sediment with the largest value (1) to the material with the smallest value (3) for hydraulic conductivity, K<\/em>, specific yield, S<\/em>y<\/em><\/sub>, and porosity n<\/em>.\r\n\r\n\r\n\r\n\r\n\r\n\r\n
<\/td>\r\nK<\/em><\/td>\r\nS<\/em>y<\/em><\/sub><\/td>\r\nn<\/em><\/td>\r\n<\/tr>\r\n
Silty Sand<\/td>\r\n____2<\/span>____<\/td>\r\n____2<\/span>____<\/td>\r\n____2<\/span>____<\/td>\r\n<\/tr>\r\n
Clay<\/td>\r\n____3<\/span>____<\/td>\r\n____3<\/span>____<\/td>\r\n____1<\/span>____<\/td>\r\n<\/tr>\r\n
Equally mixed sand and gravel<\/td>\r\n____1<\/span>____<\/td>\r\n____1<\/span>____<\/td>\r\n____3<\/span>____<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nEstimation of these orders requires a number of assumptions and depending on one\u2019s thinking slight differences in ordering are acceptable.\r\n \r\nFor hydraulic conductivity see Figure 32<\/a> of this book, the order is fairly clear.\r\n\r\nFor specific yield see Table 3<\/a> of this book. Sand infilling the pores of the gravel will decrease its hydraulic conductivity compared to either sand or gravel, decrease its porosity and decrease its specific yield. Also, the materials have a wide range of values. Consequently, the proper ordering is not entirely clear.\r\n\r\nFor porosity see Tables 1<\/a> and 2<\/a> in this book\r\n\r\n

Return to Exercise 3<\/a><\/p>","rendered":"

3) Rank the materials from the sediment with the largest value (1) to the material with the smallest value (3) for hydraulic conductivity, K<\/em>, specific yield, S<\/em>y<\/em><\/sub>, and porosity n<\/em>.<\/p>\n\n\n\n\n\n\n
<\/td>\nK<\/em><\/td>\nS<\/em>y<\/em><\/sub><\/td>\nn<\/em><\/td>\n<\/tr>\n
Silty Sand<\/td>\n____2<\/span>____<\/td>\n____2<\/span>____<\/td>\n____2<\/span>____<\/td>\n<\/tr>\n
Clay<\/td>\n____3<\/span>____<\/td>\n____3<\/span>____<\/td>\n____1<\/span>____<\/td>\n<\/tr>\n
Equally mixed sand and gravel<\/td>\n____1<\/span>____<\/td>\n____1<\/span>____<\/td>\n____3<\/span>____<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Estimation of these orders requires a number of assumptions and depending on one\u2019s thinking slight differences in ordering are acceptable.<\/p>\n

For hydraulic conductivity see Figure 32<\/a> of this book, the order is fairly clear.<\/p>\n

For specific yield see Table 3<\/a> of this book. Sand infilling the pores of the gravel will decrease its hydraulic conductivity compared to either sand or gravel, decrease its porosity and decrease its specific yield. Also, the materials have a wide range of values. Consequently, the proper ordering is not entirely clear.<\/p>\n

For porosity see Tables 1<\/a> and 2<\/a> in this book<\/p>\n

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