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Lesson 5 of 16

Off-Grid Drainage: Cesspools & Septic Tanks

Read through the material below, then test your understanding.

Module Lessons

Advanced Sanitation & Rainwater Systems

Lesson Overview

This lesson covers off-grid foul drainage systems, comparing the operating principles, design limitations, and soil percolation test procedures for cesspools and septic tanks under Building Regulations Approved Document H2.

Learning Objectives

Distinguish between the design, construction, and operation of cesspools and septic tanks.

Explain the environmental risks, soundness requirements, and legal limitations of off-main drainage.

Calculate soil percolation values (Vp) and determine land drainage suitability in accordance with Approved Document H2.

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