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
