This course covers surface erosion, and analysis of flow quantity and groundwater pressures associated with underseepage. Requirements are given for methods of drainage and pressure relief. Control of soil erosion must be considered in all new construction projects. Seepage pressures are of primary importance in stability analysis and in foundation design and construction. Frequently, drawdown of groundwater is necessary for construction. In other situations, pressure relief must be incorporated in temporary and permanent structures. For erosion analysis, the surface water flow characteristics, soil type, and slope are needed. For analysis of major seepage problems, determine permeability and piezometric levels by field observations. Course Outline 1. INTRODUCTION 2. SEEPAGE ANALYSIS 3. SEEPAGE CONTROL BY CUTOFF 4. DESIGN OF DRAINAGE BLANKET AND FILTERS 5. WELLPOINT SYSTEMS AND DEEP WELLS 6. LININGS FOR RESERVOIRS AND POLLUTION CONTROL FACILITIES 7. EROSION CONTROL 8. REFERENCES This course will give you an introduction to seepage and drainage control for foundations and earth structures.

Learning Objectives

• Learn techniques for analysis of seepage considerations at earth structure;
• Learn how to construct and apply flow net diagrams;
• Learn how to estimate seepage quantities for different soil conditions;
• Learn how to calculate seepage forces exerted on soils subject to seepage conditions;
• Learn about the conditions that lead to “boiling” seepage and mitigation techniques to minimize or eliminate its consequences;
• Learn the cutoff techniques for seepage control;
• Learn how to design and apply drainage blankets;
• Learn about the different types of reservoir linings and their applicability;
• Learn about “piping” failures and subsurface erosion; and
• Learn about wellpoint systems.