![Chapter 26 Gradation Design of Sand and Gravel Filters](/6ky5vhl/462.jpg)
Chapter 26 Gradation Design of Sand and Gravel Filters
Example 26–4 Silty sand base soil—Category 4 26–23 Example 26–5 Design of a coarse filter to be compatible 26–27 with a previously designed fine filter and used around a perforated pipe Example 26–6 Very fine clay base soil—Category 1 26–33 26–v (210vi–NEH, October 1994) 26–1 Chapter 26 Gradation Design of Sand and Gravel Filters Part 633 National Engineering Handbook ...