Sheet Metal Worker

Anonymous

National (OA)

Documents

Individual state requirements may vary. Please contact your local apprenticeship office to ensure this version is suitable to your state’s requirements.

Work Process Schedule

Work Process Content

On the Job Training

Anonymous

Cornices and Skylights

Fabrication and erection of cornices
Layout and fabrication of single and double pitch skylights
Layout and fabrication of hipped skylights

Forced Air Furnace Work and Servicing

Layout, fabrication and installation of forced air heating systems
Erection of forced air furnaces
Servicing forced air furnaces (coal, gas, and oil)

Warm Air Heating

Calculating heat loss and sizing furnaces
Location of supply and return registers
Sizing supply and return ducts
Installation and adjustment of controls
Checking and adjustment of air distribution
Sizing, installing and adjustment of auxiliary equipment
Measuring and adjustment of combustion efficiency

Special Installation and Specialty Work

Design and fabrication of hoods
Layout/fabrication of sinks and drain tables
Layout/fabrication for belt and chain safety guards
Fabrication of materials handling equipment
Fabrication of industrial vats, tanks and pots
Fabrication and installation of flashings and expansion joints for built-up, asbestos and shingle roofs
Layout and fabrication of ventilators and louvers
Fabrication and installation of metal cabinets and shelves

General Sheet-Metal Work

Nomenclature and properties of metals used
Soldering
Welding
Brazing
Riveting
Single and double seaming
Use of rule and square
Basic principles of metal layout

Operation of Hand Tools and Power Machines

Proper use of snips, pliers, hand tongs, hammers and punchers
Operation of: bending brake; squaring shears; rotary tools, i.e., bender, crimper and edger; roller; bar folder; roll forming machines; drills and drill press; press brake

Ventilation and Air Conditioning

Rectangular duct layout
Fabrication of duct locks of all types
Fabrication of flexible connections
Principles of duct sizing
Layout and fabrication of turning vanes and dampers
Erection methods for rectangular duct
Insulation of cooling duct
Erection methods for supply and exhaust fans
Erection of all types of filters
Layout and fabrication of access doors, multi-blade dampers, weather hoods, etc.

Exhaust and Blow Pipe Work

Round pipe layout
Layout and fabrication of elbows, "Y's", "T's", and angles
Fabrication of dust collectors
Erection of round pipe conveying systems
Erector of fans for blow pipe systems

Roofing, Spouting and Guttering

Standing seam roofs
Flat seam roofs
Batten roofs
Corrugated roofs
Erection of rectangular, round and round-corrugated spouting
Erection of half-round, secret and O.G. gutters
Fabrication and erection of special gutters and spouting

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