MCCCD Program Description

SMACNA Manuals and Duct Fab Standards

Course: ABC141

First Term: 2000 Summer I

Lecture 0.5 Credit(s) 0.5 Period(s) 0.5 Load
Subject Type: Occupational
Load Formula: S

Description: Standards, codes and ordinances, according to the Sheet Metal and Air Conditioning Contractors National Association (SMACNA) manuals. Operating pressures, specific sealing requirements, connectors, reinforcing/gage requirements, specific seam types for duct fabrication and use of charts and tables

MCCCD Official Course Competencies
1. Use SMACNA manuals to determine standards for specific sheet metal jobs and to identify other specific standards, ordinances and codes. (I) 2. Define operating pressure and describe its affect on duct system design. (II) 3. Determine sealing requirements, gauge requirements, minimum connector and reinforcing for specific duct runs using selected tables and charts. (III) 4. Describe the purpose of tie rods and explain when, where and why they are used. (IV) 5. Identify specific types of seams and state their limitations and proper application. (IV)
MCCCD Official Course Competencies must be coordinated with the content outline so that each major point in the outline serves one or more competencies. MCCCD faculty retains authority in determining the pedagogical approach, methodology, content sequencing, and assessment metrics for student work. Please see individual course syllabi for additional information, including specific course requirements.

MCCCD Official Course Outline
I. SMACNA Manuals A. Standards B. Basic duct construction 1. Feet per minute 2. Water gage measurement C. Fittings and other construction D. Round, oval and flexible duct E. Hangers and supports F. Exterior components G. Equipment and casings H. Functional criteria I. Other associations, manuals and publications 1. American society of heating, refrigeration and air conditioning engineers (ASHRAE) 2. Air conditioning contractors of america (ACCA) 3. Thermal insulation manufacturers association (TIMA) 4. Architectural sheet metal manual 5. Fibrous glass duct construction standard 6. Other J. Fire and smoke protection II. Sheet Metal Duct Fabrication Standards A. Operating pressure 1. Definition 2. Water gage 3. Design B. Leakage C. Seal classes 1. No seal 2. Class A 3. Class B 4. Class C III. Duct Fabrication A. Gage and connector B. Duct table C. Gage D. Intermediate reinforcing E. Connector and intermediate reinforcing F. Connector joints 1. Slip and drive 2. Hemmed s slip 3. Inside slip joint 4. Pocket lock 5. Flanges 6. Other IV. Duct Construction A. Connector with tie rod B. Intermediate reinforcement with tie rod C. Longitudinal seams 1. Pittsburgh lock 2. Snap lock 3. Grooved seam 4. Single/double corner seams 5. Standing seams

MCCCD Governing Board Approval Date: 3/28/2000

All information published is subject to change without notice. Every effort has been made to ensure the accuracy of information presented, but based on the dynamic nature of the curricular process, course and program information is subject to change in order to reflect the most current information available.