Handbook of Occupational Groups and Families		Classification Programs Division
Release Date:  August 2001		Section Forty-six of Sixty-six

    4700 - GENERAL MAINTENANCE AND OPERATIONS WORK FAMILY   

This job family includes occupations that: (1) consist of various combinations of work that are involved in constructing, maintaining, and repairing buildings, roads, grounds, and related facilities; manufacturing, modifying, and repairing items or apparatus made from a variety of materials or types of components; or repairing and operating equipment or utilities; and (2) require the application of a variety of trade practices associated with occupations in more than one job family (unless otherwise indicated), and the performance of the highest level of work in at least two of the trades involved.

Throughout the following information, an asterisk (*) stands for series with a published standard and a double asterisk (**) stands for series with a published flysheet.

Occupations in this family are:

4714 Model Making*

This occupation includes jobs involved in planning and fabricating complex research and prototype models that are made from a variety of materials and are used in scientific, engineering, developmental, experimental, and test work. The work requires skill and knowledge of more than one specific trade.

4715 Exhibits Making/Modeling

This occupation includes jobs involved in constructing, installing, and maintaining full size or scale model visual displays, training devices, or exhibits for educational and informational purposes from a variety of materials such as wood, metal, plastic, rubber, and plaster, using work processes of more than one trade. Some examples are: making scale model streambeds, inlets, overhang areas, dams, spillways, outlet works, etc., by placing and molding materials such as sand, gravel, ground or crushed coal, haydite, and concrete to form features, and shaping and smoothing concrete mixes to finish surfaces; constructing relief map models in plastic, plaster, cardboard, clay, or other materials, using hand carving tools, pantographic routing machine, and orthographic projector; reproducing mockups of ships, aircraft, vehicles, and other objects; etc. May include installing and maintaining animation and control devices and mechanisms. This occupation does not include jobs that primarily require technical knowledge of cartography, artistic ability, specialized subject-matter knowledge, or technical knowledge and skill in museum or exhibits techniques.

4716 Railroad Car Repairing

This occupation includes jobs involved in building, repairing, dismantling, painting, and upholstering passenger and freight cars, using skills in more than one specific trade. Also includes the repair of narrow gauge, cable-drawn dollies.

4717 Boat Building and Repairing

This occupation includes jobs involved in constructing and repairing aluminum, fiberglass, and plywood hulls of small craft and vessels. Includes fitting replacement planks, ribs, keelson, deadwood and keel; caulking seams; repairing decks and topsides; replacing canvas and molding; installing deadlights, metal or wood coatings, and marine hardware; and boring shaft logs and constructing cradles to fit hulls. The work requires skill and knowledge of more than one specific trade.

4737 General Equipment Mechanic

This occupation includes jobs involved in installing, maintaining, and repairing two or more different kinds of machinery or equipment (optical instruments, electronic controls, industrial machinery, electrical equipment, hydraulic systems, electromechanical devices, heavy mobile or automotive equipment, artillery systems and components, communications equipment, etc.). The work requires the use of a variety of trade practices associated with occupations in more than one job family and the performance of the highest level of work in at least two of the trades involved.

4741 General Equipment Operating

This occupation includes jobs involved in operating a combination of transportation, construction, or other mobile equipment and stationary or portable industrial equipment, machinery, tools, or utility systems. The work requires application of skills and knowledge falling within two (or more) job families, neither of which predominates for recruitment, promotion, reduction-in-force, pay setting, or other personnel processes.

4742 Utility Systems Repairing-Operating*

This occupation includes jobs that primarily involve repairing and operating one or more utility systems (air conditioning, heating, water, sewage, electricity generation and distribution, etc.). The work requires the ability to start, stop, and regulate the utility or utilities for optimum efficiency and troubleshoot, maintain, and repair them, and knowledge of the locations and functions of all equipment in the system(s) and the kind and quality of materials to be used in repairs. The levels of work performed in repair and operation must be the same and must represent the highest level of work performed.

4745 Research Laboratory Mechanic

This occupation includes jobs involved in the fabrication, installation, maintenance, operation, modification, and repair of research laboratory facilities or unique types of experimental equipment used in research and development programs. The work requires skill and knowledge of more than one specific trade. Illustrative examples of work includes: (1) fabrication and modification of test stands and rigs for supporting engines or structures during ultra-high-velocity wind tunnel studies; (2) finishing of surfaces to micro specifications for air flow effect studies; and (3) maintaining, modifying, and operating test facilities and related equipment such as altitude simulators to achieve and hold prescribed environments for particular research studies.

4749 Maintenance Mechanic*

This occupation includes jobs involved in the maintenance and repair of grounds, exterior structures, buildings, and related fixtures and utilities, requiring the use of a variety of trade practices associated with occupations such as carpentry, masonry, plumbing, electrical, air conditioning, cement work, painting, and other related trades, and the performance of the highest level of work in at least two of the trades involved.

4754 Cemetery Caretaking*

This occupation includes jobs involved in the maintenance and upkeep of cemeteries, requiring the use of a variety of trade practices associated with occupations such as motor vehicle operating, gardening, tractor operating, laboring, and forklift operating. Such work includes digging graves, setting and aligning headstones, erecting mourners' shelters, setting up casket-lowering devices, and maintaining the appearance of the surrounding grounds.