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Lesson 5 of 7

Above Ground Drainage System Layouts

Read through the material below, then test your understanding.

Module Lessons

Sanitation

Lesson Overview

Above ground drainage systems safely convey soil and wastewater away from sanitary appliances while maintaining the necessary air balance to protect water trap seals. Correct configuration of stacks, branches, and ventilation prevents foul sewer gases from entering occupied dwellings.

Learning Objectives

Identify the four primary above ground drainage system configurations and their specific applications.

Apply crucial installation rules for stack bases, offsets, branch connections, and cross-flow prevention.

State the statutory requirements for stack ventilation, external terminations, and the correct use of air admittance valves.

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