Introduction to Drain, Waste and Vent (DWV) Systems – Module ID 02111-12

Introduction to Drain, Waste and Vent (DWV) Systems – Module ID 02111-12

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Module ID 02111-12 This module explains the factors that influence DWV system design and how different types of drains, fittings, vents, and pipe are used to move waste out of a building. Trainees will learn installation requirements that prevent malfunctions in the system.

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Description

Objectives

Upon completion of this module, the trainee will be able to do the following:

1. Explain how waste moves from a fixture through the drain system to the environment.

2. Identify the major components of a drainage system and describe their functions.

3. Identify the different types of traps and their components, explain the importance of traps, and identify the ways that traps can lose their seals.

4. Identify significant code and health issues, violations, and consequences related to DWV systems.

Performance Task

Under the supervision of the instructor, the trainee should be able to do the following:

1. Sketch an isometric drawing of a simple DWV system and label its components.

Course Sessions

Session I. DWV Systems, Fixtures, Drains, and Traps

A. DWV Systems

B. Fixture Drains

C. Types of Traps

D. Parts of Traps

Session II. Installation Requirements

A. Trap Installation Requirements

B. Why a Trap Loses Its Seal

Session III. Vents, Drains, and Fittings

A. Vents

B. Sizing Drains and Vents

C. Fittings and Their Applications

Session IV. DWV System Design; Review and Testing

A. Grade

B. Building Drain

C. Building Sewer

D. Sewer Main

E. Waste Treatment

F. Code and Health Issues

G. PT/Laboratory

Trainees will sketch an isometric drawing of a simple DWV system and label its components. This laboratory corresponds to Performance Task 1.

H. Review

I. Module Examination

1. Trainees must score 70% or higher to receive recognition from NCCER.

2. Record the testing results on NCCER National Registry, and submit the results to the Training Program Sponsor.

J. Performance Testing

1. Trainees must perform each task to the satisfaction of the instructor to receive recognition from NCCER. If applicable, proficiency noted during laboratory exercises can be used to satisfy the Performance Testing requirements.

2. Record the testing results on NCCER National Registry, and submit the results to the Training Program Sponsor.

Book Index

1.0.0   Introduction

2.0.0   DWV Systems

3.0.0   Fixture Frains

4.0.0   Traps

4.1.0   Types of Traps

4.2.0   Parts of Traps

4.3.0   Trap Installations Requirements

4.4.0   Why a Trap Loses Its Seal

4.4.1   Types of Traps

4.4.2   Aspiratrion

4.4.3   Momentum

4.4.4   Oscillation

4.4.5   Back Pressure

4.4.6   Evaporation

4.4.7   Capillary Attraction

4.4.8   Cracks

5.0.0   Vents

6.0.0   Sizing Drains and Vents

7.0.0   Fottomgs and Their Applications

7.1.0   DWV Fitting Materials

7.2.0   General DWV Fitting Requirements

7.3.0   DWV Fittings

7.3.1   Bends

7.3.2   Adapters

7.3.3   Cleanouts

7.3.4   Tees

7.3.5   Wyes

7.3.6   Miscellaneous Fittings

8.0.0   Grade

8.1.0   The Importance of Grade

9.0.0   Building Drain

9.1.0   Cleanouts

10.0.0  Building Sewer

11.0.0  Sewer Main

12.0.0  Waste Treatment

12.1.0  Manicipal Waste Treatment Systems

12.2.0  Private Waste Disposal Systems

13.0.0  Code and Health Issues

13.1.0  DWV Plumbing Codes

13.2.0  Health Issues

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