Sheet Metal

Sheet Metal Level 1

• Introduction to the Trade
  Discusses the scope and nature of the sheet metal trade, explains the training program, and identifies job opportunities in the trade.
• Trade Math
  Introduces trade problems involved with measurement of lines, area, volume, weight, and geometric figures.
• Tools of the Trade
  Describes the types and uses of hand and layout tools as well as cutting, bending, and forming machines used in the trade. Safety and maintenance guidelines are included.
• Fasteners, Hangers, and Supports
  Describes types of fasteners and common screw and bolt configurations. Factors for selecting fasteners most appropriate for the job are also identified.
• Steel and Other Materials
  Presents information on the types and properties of metals used in the trade. Systems and methods for gauging sheet metal are also described.
• Principles of Layout
  Identifies and describes the tools, materials, and methods for sheet metal layout. Practice exercises in parallel and radial line development and triangulation are included.
• Introduction to Sheet Metal Processes
  Introduces the skills, equipment, and procedures involving with metal cutting, bending, forming, and joining.
• Fabrication I
  Explains the uses of the parallel line development method. Step-by-step procedures for selected fittings to be laid out and fabricated.

Sheet Metal Level 2

• Trade Math II
  Covers problems involving the use of protractors, vernier calipers, and micrometers. Exercises for calculating the number of fitting blanks and sizes for stretchouts are provided.
• Basic Piping Practices
  Introduces the various types of pipe and fittings encountered in the field. Includes procedures for joining and hanging pipe.
• Fabrication II – Radial Line Development
  Discusses and describes the principles, uses, and types of fittings for radial line development.
• Bend Allowances
  Covers the factors that influence bend allowances and calculations necessary for determining proper bend allowances. Practice in precision bending is included.
• Soldering
  Covers the selection and application of materials and tools for soldering sheet metal parts and sealing seams. Job sheets for eight common sheet metal soldering problems are provided.
• Blueprints and Specifications
  Introduces techniques for reading blueprints, specifications, and ship drawings, and builds on the identification of various drawings from earlier blueprint modules. A series of plans and related problems are included with the Trainee Module.
• The SMACNA Manuals
  Introduces the SMACNA Manuals and provides learning activities for locating and interpreting standards related to conducting and installing low pressure duct.
• Sheet Metal Duct Fabrication Standards
  Identifies the steps required for sizing ductruns to develop skill in the use of a duct calculator.
• Insulation
  Covers proper installation of duct insulating materials such as tools, fasteners, procedures, and installation standards.
• Gutters and Downspouts
  Presents information and learning activities for calculating downspout and gutter size. Fabrication exercises are included.
• Roof Flashing
  Outlines the principles of weather sealing as they apply to architectural sheet metal tasks. Procedures for the fabrication and installation of selected flashing components are included.

Sheet Metal Level 3

• Principles of Air Flow
  Covers the principles of air flow as applied to HVAC air distribution systems. The relationships between air pressure and design and sizing of ductrun systems are identified.
• Associated Equipment
  Introduces the components of HVAC systems for which ductwork will be designed and installed.
• Principles of Refrigeration
  Covers basic refrigeration cycles and affiliated components and controls needed to identify the placement of various refrigeration components in the associated ductwork.
• Fiberglass Duct
  Covers material characteristics, tools, and procedures for laying out and fabricating fiberglass duct-run fittings.
• Fabrication III – Triangulation
  Offers self-paced learning of layout and fabrication problems requiring the triangulation method.
• Introduction to Welding, Brazing, and Cutting
  Provides an overview of the basic welding processes. Learning activities and practice exercises are included.
• Field Measuring and Fitting
  Introduces the problems and techniques of field measuring for layout and installation of duct sections and offsets.

Sheet Metal Level 4

• Shop Production and Organization
  Covers recommended practices necessary to increase shop production and eliminate wasted time and materials. Various shop layouts and production monitoring techniques are studied.
• Air Balance
  Provides installation methods for grilles, diffuses, and registers. Also, covers equipment necessary for balancing ductrun systems.
• Fabrication IV – Comprehensive Review
  Reviews parallel line development, radial line development, and triangulation methods of fabrication. Fabrication exercises are included for each method.
• Louvers, Dampers, and Access Doors
  Explains the purpose of louvers, dampers, and access doors, and describes how they are constructed. Self-paced learning activities are provided.
• Hoods and Ventilators
  Covers specifications and principles for the layout and fabrication of hood and ventilation fittings. Practice exercises are included.
• Fume and Exhaust Systems Design
  Covers industrial ventilation and conveying of particulates. Also includes job sheets to provide hands-on experience in fabricating various hoods and dust collectors.