Mounts acoustical tile to walls and ceilings of buildings to reduce reflection of sound and to decorate rooms. Measures and marks surface to lay out work, according to blueprints and drawings. Inspects furrings, mechanical mountings, and masonry surface for plumbness and level, using spirit or water level. Nails or screws molding to wall to support and seal joint between ceiling tile and wall. Scribes and cuts edges of tile to fit wall where wall molding is not specified. Mounts tiles, using any of following methods: (1) Applies cement to back of tile and presses tile into place, aligning with layout marks and joints of previously laid tile. (2) Nails channels or wood furring strips to surfaces to provide mounting for tile. Places building paper between tile and furring strip preparatory to application of butt-edge tile. Nails, screws, or staples tile to wooden furring strips. (3) Hangs dry lines (stretched string) to wall molding to guide positioning of main runners. Drives hanger inserts into reinforced concrete ceiling, using power fastening tool, and suspends and bends hanger wires at points touching dry lines. Threads wires through holes in main runners, and cuts and attaches cross supports to suspended runners and wall molding, using snips, clips, and rivet gun. Cuts tiles for fixtures and borders, using keyhole saw, and inserts tiles into supporting framework. May wash concrete surfaces with washing soda and zinc sulfate solution before mounting tile to increase adhesive qualities of surfaces.

Fabricates artificial glass eyes for humans according to physician's prescription or customer specifications, applying knowledge of glass blowing and fabricating techniques: Holds and turns glass tube over gas burner to soften glass to viscous state. Blows into tube to form globe. Superimposes glass of required color on top surface of bulb to form iris. Fuses black glass in center of iris to simulate pupil and fuses clear glass over iris to form cornea. Positions and fuses red glass threads on globe to produce veins of eyeball. Fits artificial glass eyes to patients and makes adjustments for cosmetic correction.

Repairs damaged bodies and body parts of automotive vehicles, such as automobiles, buses, and light trucks according to repair manuals, using hand tools and power tools: Examines damaged vehicles and estimates cost of repairs. Removes upholstery, accessories, electrical and hydraulic window-and-seat-operating equipment, and trim to gain access to vehicle body and fenders. Positions dolly block against surface of dented area and beats opposite surface to remove dents, using hammer. Fills depressions with body filler, using putty knife. Removes damaged fenders, panels, and grills, using wrenches and cutting torch, and bolts or welds replacement parts in position, using wrenches or welding equipment. Straightens bent automobile frames, using pneumatic frame straightening machine. Files, grinds, and sands repaired surfaces, using power tools and hand tools. Refinishes repaired surface, using paint spray gun and sander. Aims headlights, aligns wheels, and bleeds hydraulic brake system. May paint surfaces after performing body repairs. May repair or replace defective mechanical parts.

Repairs and overhauls automobiles, buses,trucks, and other automotive vehicles: Examines vehicle and discusseswith customer or AUTOMOBILE-REPAIR-Service ESTIMATOR; AUTOMOBILE Tester;or BUS INSPECTOR nature and extent of damage or malfunction. Plans workprocedure, using charts, technical manuals, and experience. Raises vehicle,using hydraulic jack or hoist, to gain access to mechanical units boltedto underside of vehicle. Removes unit, such as engine, transmission,or differential, using wrenches and hoist. Disassembles unit and inspectsparts for wear, using micrometers, calipers, and thickness gauges. Repairsor replaces parts, such as pistons, rods, gears, valves, and bearings,using mechanic's hand tools. Overhauls or replaces carburetors, blowers,generators, distributors, starters, and pumps. Rebuilds parts, such ascrankshafts and cylinder blocks, using lathes, shapers, drill presses,and welding equipment. Rewires ignition system, lights, and instrumentpanel. Relines and adjusts brakes, aligns front end, repairs or replacesshock absorbers, and solders leaks in radiator. Mends damaged body andfenders by hammering out or filling in dents and welding broken parts.Replaces and adjusts headlights, and installs and repairs accessories,such as radios, heaters, mirrors, and windshield wipers.

Align and repair wheels, axles, frames, torsion bars, and steering mechanisms of automobiles, using special alignment equipment and wheel-balancing machines. Examine vehicles, compile estimates of repair costs, and secure customers' approval to perform repairs. Install and repair air conditioners, and service components such as compressors, condensers, and controls. Rebuild, repair, and test automotive fuel injection units. Remove and replace defective mufflers and tailpipes. Repair and rebuild clutch systems. Repair and replace automobile leaf springs. Repair and replace defective balljoint suspensions, brakeshoes, and wheelbearings. Repair, overhaul, and adjust automobile brake systems. Repair, replace, and adjust defective carburetor parts and gasoline filters.

Prepares bread, rolls, muffins, and biscuits according to recipe: Checks production schedule to determine variety and quantity of goods to bake. Measures ingredients, using measuring cups and spoons. Mixes ingredients to form dough or batter by hand or using electric mixer. Cuts dough into uniform portions with knife or divider. Molds dough into loaves or desired shapes. Places shaped dough in greased or floured pans. Spreads or sprinkles topping, such as jelly, cinnamon, and poppy seeds on specialties. Places pans of dough in proof box to rise. Inserts pans of raised dough in oven to bake, using peel. Adjusts drafts or thermostatic controls to regulate oven temperature. Removes baked goods from oven and places goods on cooling rack. May bake pies, cakes, cookies, and other pastries [Cook, Pastry (hotel & rest.)]. May be designated according to specialty baked as Baker, Biscuit (hotel & rest.); Hot-Bread Baker (hotel & rest.); Rolls Baker (hotel & rest.); or according to shift worked as Night Baker (hotel & rest.).

Operates automatically fired boilersto generate steam that supplies heat or power for buildings or industrialprocesses: Lights gas- or oil-fed burners, using torch. Starts pulverizerand stoker to grind and feed coal into furnace of boiler. Observes pressure,temperature, and draft meters on panel to verify specified operationof automatic combustion control systems, feed water regulators, stoker,pulverizer, and burners. Turns valves and adjusts controls to set specifiedfuel feed, draft openings, water level, and steam pressure of boiler.Observes boiler and auxiliary units to detect malfunctions and makesrepairs, such as changing burners and tightening pipes and fittings.May test and treat boiler feed water, using specified chemicals. Maymaintain log of meter and gauge readings and record data, such as watertest results and quantity of fuel consumed. May be designated accordingto fuel burned, type of boilers, or class of license required.

Lays building materials, such as brick, structural tile, and concrete cinder, glass, gypsum, and terra cotta block (except stone) to construct or repair walls, partitions, arches, sewers, and other structures. Measures distance from reference points and marks guidelines on working surface to lay out work. Spreads soft bed (layer) of mortar that serves as base and binder for block, using trowel. Applies mortar to end of block and positions block in mortar bed. Taps block with trowel to level, align, and embed in mortar, allowing specified thickness of joint. Removes excess mortar from face of block, using trowel. Finishes mortar between brick with pointing tool or trowel. Breaks bricks to fit spaces too small for whole brick, using edge of trowel or brick hammer. Determines vertical and horizontal alignment of courses, using plumb bob, gauge line (tightly stretched cord), and level. Fastens brick or terra cotta veneer to face of structures, with tie wires embedded in mortar between bricks, or in anchor holes in veneer brick. May weld metal parts to steel structural members. May apply plaster to walls and ceiling, using trowel, to complete repair work [Plasterer (construction)]. May be designated according to material used as Cinder-Block Mason (construction); Concrete-Block Mason (construction); Terra-Cotta Mason (construction); or work performed as Bricklayer, Maintenance (any industry). When specializing in construction of specified structures, is designated according to specialty as Bricklayer, Sewer (construction); Chimney Builder, Brick (construction). May be designated: Block Setter, Gypsum (construction); Hollow-Tile-Partition Erector (construction); Plaster-Block Layer (construction); Silo Erector (construction).

Cuts, trims, bones, ties, and grinds meats, using butcher's cutlery and powered equipment, such as electric grinder and bandsaw, to portion and prepare meat in cooking form: Cuts, trims, and bones carcass sections or prime cuts, using knives, meat saw, cleaver, and bandsaw, to reduce to cooking cuts, such as roasts, steaks, chops, stew cubes, and grinding meat. Cuts and weighs steaks and chops for individual servings. Tends electric grinder to grind meat. Shapes and ties roasts. May estimate requirements and requisition or order meat supply. May receive, inspect, and store meat upon delivery. May record quantity of meat received and issued to cooks. May clean fowl and fish [BUTCHER, CHICKEN and FISH (hotel & rest.)]. May oversee other butchers and be designated Butcher, Head (hotel & rest.).

Sets up and operates variety of woodworking machines and uses various handtools to fabricate and repair wooden cabinets and high-grade furniture: Studies blueprints or drawings of articles to be constructed or repaired, and plans sequence of cutting or shaping operations to be performed. Marks outline or dimensions of parts on paper or lumber stock, according to blueprint or drawing specifications. Matches materials for color, grain, or texture. Sets up and operates woodworking machines, such as power saws, jointer, mortiser, tenoner, molder, and shaper, to cut and shape parts from woodstock. Trims component parts of joints to ensure snug fit, using handtools, such as planes, chisels, or wood files. Bores holes for insertion of screws or dowels by hand or using boring machine. Glues, fits, and clamps parts and subassemblies together to form complete unit, using clamps or clamping machine. Drives nails or other fasteners into joints at designated places to reinforce joints. Sands and scrapes surfaces and joints of articles to prepare articles for finishing. May repair high-grade articles of furniture. May dip, brush, or spray assembled articles with protective or decorative materials, such as stain, varnish, or paint. May install hardware, such as hinges, catches, and drawer pulls. May repair furniture, equipment, and fixtures and be designated Cabinetmaker, Maintenance (woodworking). May be designated according to products made as Piano-Case Maker (musical inst.). May cut, shape, and assemble wooden parts to construct frames for refrigeration equipment and be designated Refrigerator Cabinetmaker (svc. ind. mach.).

Installs and repairs underground conduit and cable systems used to conduct electrical energy between substations and consumers. Installs and repairs conduits following blueprints. Pulls cables through ducts [Cable Puller (construction; utilities)]. Splices cables together or to overhead transmission line, customer service line, or street light line [Cable Splicer (construction; tel. & tel.; utilities)]. Installs and repairs transformers, fuse boxes, bus bars, relays, and other electrical equipment in manhole and underground substations [Underground Repairer (utilities)] according to wiring diagrams and specifications. Reinsulates or replaces worn cables and wires. Tests electric cables and equipment wiring to detect broken circuits or incorrect connections, using test lamp, voltmeter, ammeter, and thermocouple indicator.

Access specific areas to string lines and install terminal boxes, auxiliary equipment, and appliances, using bucket trucks, or by climbing poles and ladders or entering tunnels, trenches, or crawl spaces. Inspect and test lines and cables, recording and analyzing test results, to assess transmission characteristics and locate faults and malfunctions. Install equipment such as amplifiers and repeaters in order to maintain the strength of communications transmissions. Lay underground cable directly in trenches, or string it through conduits running through trenches. Measure signal strength at utility poles, using electronic test equipment. Place insulation over conductors, and seal splices with moisture-proof covering. Pull up cable by hand from large reels mounted on trucks; then pull lines through ducts by hand or with winches. Set up service for customers, installing, connecting, testing, and adjusting equipment. Splice cables, using hand tools, epoxy, or mechanical equipment. String cables between structures and lines from poles, towers, or trenches and pull lines to proper tension.

Splices overhead, underground, or submarine multiple-conductor cables used in telephone and telegraph communication and electric-power transmission systems. Climbs utility poles or towers, utilizes truck-mounted lift bucket, or descends into sewers and underground vaults where cables are located. Cuts lead sheath from installed cable to gain access to defective cable connections, using hacksaw. Cuts and peels lead sheath and insulation from newly installed cables and conductors preparatory to splicing. Tests (traces or phases-out) each conductor to identify corresponding conductors in adjoining cable sections, according to electrical diagrams and specifications, to prevent incorrect connections between individual communication circuits or electric power circuits, using test lamp or bell system. Cleans, tins, and splices corresponding conductors by twisting ends together or by joining ends with metal clips and soldering each connection. Covers conductors with insulating or fireproofing materials. Fits lead sleeve around cable joint and wipes molten lead into joints between sleeve and cable sheath to produce moisture-proof joint. Fills completed sleeve with insulating oil. May work on energized circuits to avoid interruption of service. May locate and repair leaks in pressurized cable. May work on board marine craft when splicing underwater cable and be designated Jointer, Submarine Cable (tel. & tel.; utilities).

Constructs, erects, installs, and repairs structures and fixtures of wood, plywood, and wallboard, using carpenter's hand tools and power tools, and conforming to local building codes: Studies blueprints, sketches, or building plans for information pertaining to type of material required, such as lumber or fiberboard, and dimensions of structure or fixture to be fabricated. Selects specified type of lumber or other materials. Prepares layout, using rule, framing square, and calipers. Marks cutting and assembly lines on materials, using pencil, chalk, and marking gauge. Shapes materials to prescribed measurements, using saws, chisels, and planes. Assembles cut and shaped materials and fastens them together with nails, dowel pins, or glue. Verifies trueness of structure with plumb bob and carpenter's level. Erects framework for structures and lays sub flooring. Builds stairs and lays out and installs partitions and cabinet work. Covers sub floor with building paper to keep out moisture and lays hardwood, parquet, and wood-strip-block floors by nailing floors to sub floor or cementing them to mastic or asphalt base. Applies shock-absorbing, sound-deadening, and decorative paneling to ceilings and walls. Fits and installs prefabricated window frames, doors, doorframes, weather stripping, interior and exterior trim, and finish hardware, such as locks, letter drops, and kick plates. Constructs forms and chutes for pouring concrete. Erects scaffolding and ladders for assembling structures above ground level. May weld metal parts to steel structural members. When specializing in a particular phase of carpentry, the designation is according to a specialty such as Combination-Window Installer (construction); Lay-Out Carpenter (construction). When specializing in finish carpentry, such as installing interior and exterior trim, building stairs, and laying hardwood floors, the designation is Finish Carpenter (construction). When erecting frame buildings and performing general carpentry work in residential construction, the designation is House Carpenter (construction). May remove and replace sections of structures prior to and after installation of insulating materials and be designated Building-Insulating Carpenter (construction; retail trade). May perform carpentry work in construction of walk-in freezers and environmental test chambers and be designated Carpenter, Refrigerator (svc. industry mach.). May be designated: Door Hanger (construction); Finished-Hardware Erector (construction); Garage-Door Hanger (construction); Hardwood-Floor Installer (construction); Jalousie Installer (construction); Stair Builder (construction); Trim Setter (construction); Weather Stripper (construction); Wood-Sash-And-Frame Carpenter (construction); Wood-Strip-Block Floor Installer (construction).

Constructs and repairs structural woodwork and equipment in establishment, working from blueprints, drawings, or oral instructions: Builds, repairs, and installs counters, cabinets, benches, partitions, floors, doors, building framework, and trim, using carpenter's hand tools and power tools. Installs glass in windows, doors, and partitions. Replaces damaged ceiling tile, floor tile, and wall coverings. May build cabinets and other wooden equipment in carpenter shop, using woodworking machines, such as saws, shaper, and jointer [CABINETMAKER (woodworking) 660.280-010]. May install items, such as window shades, venetian blinds, and curtain rods, wall fans, and door locks for tenants. May be designated according to place at which work is performed as Carpenter, Mine (mine & quarry); or according to specific items made or maintained as Flume Maker (mine & quarry); Frame Maker (leather mfg.); Meat-Cutting-Block Repairer (any industry).

Sets up power and hand tools necessary to prepare specific pilings. Lay out from blueprints and/or site plans the exact location of where the pilings will be driven. Prepares the piling to be driven, and assists in positioning and driving the piling. Dresses and caps the pilings after having been driven, and prepares them to receive the superstructure. Performs site preparation for installation of various concrete and wood structures. Builds the form work for concrete structure, and constructs the timber fasework for all kinds of structures. May perform light framing and finish work.

Smoothes and finishes surfaces of poured concrete floors, walls, sidewalks, or curbs to specified textures, using hand tools or power tools, including floats, trowels, and screeds. Signals concrete deliverer to position truck to facilitate pouring concrete. Moves discharge chute of truck to direct concrete into forms. Spreads concrete into inaccessible sections of forms, using rake or shovel. Levels concrete to specified depth and workable consistency, using hand held screed and floats to bring water to surface and produce soft topping. Smoothes, and shapes surfaces of freshly poured concrete, using straightedge and float or power screed. Finishes concrete surfaces, using power trowel, or wets and rubs concrete with abrasive stone to impart finish. Removes rough or defective spots from concrete surfaces, using power grinder or chisel and hammer, and patches holes with fresh concrete or epoxy compound. Molds expansion joints and edges, using edging tools, jointers, and straightedge. May sprinkle colored stone chips, powdered steel, or coloring powder on concrete to produce prescribed finish. May produce rough concrete surface, using broom. May mix cement, using hoe or concrete-mixing machine. May direct sub grade work, mixing of concrete, and setting of forms. May specialize in finishing steps and stairways and be designated Step Finisher (construction). May break up and repair old concrete surfaces, using pneumatic tools, and be designated Cement Mason, Maintenance (any industry). May spread premixed cement over deck, inner surfaces, joints, and crevices of ships and be designated Cementer (ship-boat mfg.).

Conducts chemical and physical laboratory tests of solid materials, liquids, and gases, and analyzes test data for variety of purposes, such as research, product development, quality control, criminal investigation, and establishing standards, involving experimental, theoretical, or practical application of chemistry and related sciences: Sets up laboratory equipment and instrumentation required for tests, research, or process control. Tests and analyzes products, such as food, drugs, fertilizers, plastics, paints, detergents, paper, petroleum, and cement, to determine strength, stability, purity, chemical content, and other characteristics. Tests and analyzes materials and substances, such as ores, minerals, gases, soil, water, and pollutants. Documents results of tests and analyses. May prepare chemical solutions for use in processing materials, following standardized formulas or experimental procedures. May test and analyze radioactive and biological materials, applying knowledge of radiochemical procedures, emission spectrometry, and related techniques.

Organizes and leads activities of children including early learning experiences, development of creativity, establishment of personal habits of dress and hygiene, eating and clothing care. May assist in serving food and other meal time activities. Leads and participates in games and other activities to encourage acceptable social behavior. Maintains discipline and notes and records observable mental and physical defects and development. Provides instruction to children regarding desirable health and personal habits. Directs activities to develop coordination. Assists in preparing and recording personal dossier and developmental records. Training development specialists may also provide additional special training and activities as required for handicapped children with special needs and provide such services as therapeutic positioning, handling and feeding, etc., for those with emotional, physical and/or learning deficiencies.

Prepares and cooks family-style meals for crews or residents and employees of institutions: Cooks foodstuffs in quantities according to menu and number of persons to be served. Washes dishes. Bakes breads and pastry [BAKER (hotel & rest.)]. Cuts meat [BUTCHER, MEAT (hotel & rest.)]. Plans menu taking advantage of foods in season and local availability. May serve meals. May order supplies and keep records and accounts. May direct activities of one or more workers who assist in preparing and serving meals. May be designated according to work location as Cook, Camp (any industry); Cook, Institution (any industry); Cook, Ranch (agriculture); Cook, Ship (water trans.).

Prepares, seasons, and cooks soups, meats, vegetables, desserts, and other foodstuffs for consumption in eating establishments. Reads menu to estimate food requirements and orders food from supplier or procures food from storage. Adjusts thermostat controls to regulate temperature of ovens, broilers, grills, roasters, and steam kettles. Measures and mixes ingredients according to recipe, using variety of kitchen utensils and equipment, such as blenders, mixers, grinders, slicers, and tenderizers, to prepare soups, salads, gravies, desserts, sauces, and casseroles. Bakes, roasts, broils, and steams meats, fish, vegetables, and other foods. Adds seasoning to foods during mixing or cooking, according to personal judgment and experience. Observes and tests foods being cooked by tasting, smelling, and piercing with fork to determine that it is cooked. Carves meats, portions food on serving plates, adds gravies and sauces, and garnishes servings to fill orders. May supervise other cooks and kitchen employees. May wash, peel, cut, and shred vegetables and fruits to prepare them for use. May butcher chickens, fish, and shellfish. May cut, trim, and bone meat prior to cooking. May bake bread, rolls, cakes, and pastry [BAKER (hotel & rest.) 313.381-010]. May price items on menu. May be designated according to meal cooked or shift worked as Cook, Dinner (hotel & rest.); Cook, Morning (hotel & rest.); or according to food item prepared as Cook, Roast (hotel & rest.); or according to method of cooking as Cook, Broiler (hotel & rest.). May substitute for and relieve or assist other cooks during emergencies or rush periods and be designated Cook, Relief (hotel & rest.). May prepare and cook meals for institutionalized patients requiring special diets and be designated Food-Service Worker (hotel & rest.). May be designated: Cook, Dessert (hotel & rest.); Cook, Fry (hotel & rest.); Cook, Night (hotel & rest.); Cook, Sauce (hotel & rest.); Cook, Soup (hotel & rest.); Cook, Special Diet (hotel & rest.); Cook, Vegetable (hotel & rest.). May oversee work of patients assigned to kitchen for work therapy purposes when working in psychiatric hospital.

Prepares and bakes cakes, cookies, pies, puddings, or desserts, according to recipe. Measures ingredients, using measuring cups and spoons. Mixes ingredients to form dough or batter, using electric mixer or beats and stirs ingredients by hand. Shapes dough for cookies, pies, and fancy pastries, using pie dough roller and cookie cutters or by hand. Places shaped dough portions in greased or floured pans and inserts them in oven, using long-handled paddle (peel). Adjusts drafts or thermostatic controls to regulate oven temperatures. Prepares and cooks ingredients for pie fillings, puddings, custards, or other desserts. Pours filling into pie shells and tops filling with meringue or cream. Mixes ingredients to make icings. Decorates cakes and pastries [CAKE Decorator (bakery products) 524.381-010]. Blends colors for icings and for shaped sugar ornaments and statuaries. May specialize in preparing one or more types of pastry or dessert when employed in large establishment. May oversee work of patients assigned to kitchen for work therapy purposes when working in psychiatric hospital.

Operates computer and peripheral equipment to process business, scientific, engineering, or other data, according to operating instructions: Enters commands, using keyboard of computer terminal, and presses buttons and flips switches on computer and peripheral equipment, such as tape drive, printer, data communications equipment, and plotter, to integrate and operate equipment, following operating instructions and schedule. Loads peripheral equipment with selected materials, such as tapes and printer paper for operating runs, or oversees loading of peripheral equipment by peripheral equipment operators. Enters commands to clear computer system and start operation, using keyboard of computer terminal. Observes peripheral equipment and error messages displayed on monitor of terminal to detect faulty output or machine stoppage. Enters commands to correct error or stoppage and resume operations. Notifies supervisor of errors or equipment stoppage. Clears equipment at end of operating run and reviews schedule to determine next assignment. Records problems which occurred, such as down time, and actions taken. May answer telephone calls to assist computer users encountering problem. May assist workers in classifying, cataloging, and maintaining tapes

Performs any combination of duties involving highway or building construction, environmental restoration, tunnel and shaft construction and demolition projects, utilizing specialized training and knowledge of craft skills and handling of hazardous materials. Clears and prepares sites, right-of-ways, and foundations for cementitious and asphaltic products and structures, using hand and power tools such as shovels, rakes, gas and diesel powered cutting and compacting equipment, so the final site conforms exactly to grade, size, and location specifications in blueprints or plans.

Analyzes malfunctions and repairs, rebuilds, and maintains construction equipment, such as cranes, power shovels, scrapers, paving machines, motor graders, trench-digging machines, conveyors, bulldozers, dredges, pumps, compressors and pneumatic tools: Operates and inspects machines or equipment to diagnose defects. Dismantles and reassembles equipment, using hoists and handtools. Examines parts for damage or excessive wear, using micrometers and gauges. Replaces defective engines and subassemblies, such as transmissions. Tests overhauled equipment to ensure operating efficiency. Welds broken parts and structural members. May direct workers engaged in cleaning parts and assisting with assembly and disassembly of equipment. May repair, adjust, and maintain mining machinery, such as stripping and loading shovels, drilling and cutting machines, and continuous mining machines, and be designated Mine-Machinery Mechanic (mine & quarry).

Prepares and installs decorations and displays from blueprints or drawings for trade and industrial shows, expositions, festivals, and other special events. Cuts out designs on cardboard, hard board, and plywood, according to motif of event. Constructs portable installations according to specifications, using woodworking power tools. Installs booths, exhibits, displays, carpets, and drapes, as guided by floor plan of building. Arranges installation, furniture, and other accessories in position shown in prepared sketch. Installs decorations, such as flags, banners, festive lights, and bunting, on or in building, street, exhibit halls, and booths, to achieve special effects [Decorator, Street and Building (any industry)]. Assembles and installs prefabricated parts to reconstruct traveling exhibits from sketch submitted by client, using hand tools

Assists dentist during examination and treatment of patients: Prepares patient, sterilizes and disinfects instruments, sets up instrument trays, prepares materials, and assists dentist during dental procedures. Takes and records medical and dental histories and vital signs of patient. Exposes dental diagnostic x rays. Makes preliminary impressions for study casts and occlusal registrations for mounting study casts. Pours, trims, and polishes study casts, fabricates custom impression trays from preliminary impressions, cleans and polishes removable appliances, and fabricates temporary restorations. Assists dentist in management of medical and dental emergencies. Instructs patients in oral hygiene and plaque control programs. Provides postoperative instructions prescribed by dentist. Records treatment information in patient records. Schedules appointments, prepares bills and receives payment for dental services, completes insurance forms, and maintains clerical records, manually or using computer. May clean teeth, using dental instruments. May apply protective coating of fluoride to teeth.

Performs any combination of following tasks to fabricate and repair dental appliances, according to Dentist's (medical ser.) 072.101-010 prescription, using handtools, molding equipment, and bench fabricating machines: Reads prescription and examines dental models and impressions to determine type of denture to be made or repaired applying knowledge of dental laboratory techniques. Fabricates full or partial dentures, using wax, plastic and plaster models, articulators, grinders, and polishers. Casts plastic or plaster models of dentures to be repaired [Denture-Model Maker (protective dev.) 712.684-046]. Selects and mounts replacement teeth in model to match color and shape of natural or adjacent teeth, using tooth color scales and tooth illustrations. Molds wax over denture setup to form contours of gums, using knives and spatula [Denture WAXER (protective dev.) 712.381-046]. Removes excess plastic and polishes surfaces of cast dentures, using grinding and polishing tools and ultrasonic equipment [Finisher, Denture (protective dev.) 712.381-050]. Rebuilds denture linings to duplicate original thickness, contour, and color according to specifications. Tests repaired dentures for accuracy of occlusion, using articulator. Bends and solders gold and platinum wire to construct wire frames for dentures, using soldering gun and handtools [CONTOUR Wire Specialist, Denture (protective dev.) 712.381-014]. May confer with DENTIST (medical ser.) to resolve problems in design and setup of dentures. May be designated according to type of denture fabricated as Dental Technician, Crown And Bridge (protective dev.); Dental Technician, Metal (protective dev.).

Repairs and maintains diesel engines used to power machines, such as buses, ships, trucks, railroad trains, electric generators, and construction machinery, using hand tools, precision measuring instruments, and machine tools. Diagnoses trouble, disassembles engines, and examines parts for defects and excessive wear. Reconditions and replaces parts, such as pistons, bearings, gears, valves, and bushings, using engine lathes, boring machines, hand tools, and precision measuring instruments. May weld and cut parts, using arc-welding and flame cutting equipment. May be designated according to type of diesel engine or equipment repaired as Diesel-Engine Mechanic, Automotive Mechanic (automotive ser.); Diesel-Engine Mechanic, Bus (automotive ser.); Diesel-Engine Mechanic, Marine (ship-boat mfg.); Diesel-Engine Mechanic, Truck (automotive ser.); Diesel-Mechanic, Construction (construction); Diesel-Mechanic, Farm (agric. equip.); Locomotive Repairer, Diesel (railroad equip.).

Installs plasterboard or other wallboard to ceiling and interior walls of building, using hand tools and portable power tools. Installs horizontal and vertical metal or wooden studs for attachment of wallboard on interior walls, using hand tools. Cuts angle iron and channel iron to specified size, using hacksaw, and suspends angle iron grid and channel iron from ceiling, using wire. Scribes measurements on wallboard, using straightedge and tape measure, and cuts wallboard to size, using knife or saw. Cuts out openings for electrical and other outlets, using knife or saw. Attaches wallboard to wall and ceiling supports, using glue, nails, screws, hammer, or powered screwdriver. Trims rough edges from wallboard to maintain even joints, using knife. Nails prefabricated metal pieces around windows and doors and between dissimilar materials to protect drywall edges. Work is usually performed with other workers. May remove plaster, drywall, or paneling during renovation project, using crowbar and hammer.

Installs, disconnects, removes, and reconnects electric power meters used to record current consumption of residential, commercial, and industrial customers. Splices and connects covered insulated cable to bus bar in pull box or on switchboard. Mounts meter, and other electric equipment for high load installations, such as time clocks, transformers, and circuit breakers, on racks or wall, using electrician hand tools. Installs and connects cable from pull box to meter socket or transformer. Attaches color-coded wires from current transformer to test blocks and from test blocks to meter terminals for testing purposes. Tests meter for current flow and recording of current consumption. Disconnects and seals meter on cut-off order or removes seal and reconnects meter on cut-in orders. Removes, replaces, and reconnects meters when current consumption is too high for existing installation. Installs temporary service meter for recording current consumption during construction. Splices and connects jumper cables from current transformer onto bus bar on switchboard to provide temporary power for customer during change of meter and cables or when customer's service equipment is defective. Records meter and installation data on meter cards, work orders, and field service orders. Locates, diagnoses, and clears electrical trouble on customers' premises. Performs minor repairs and changes faulty or incorrect wiring on customer's premises. May be designated according to specialty as Meter Installer-And-Remover (utilities).

Inspects, adjusts, and repairs electric meters used for recording electric current consumption. Disassembles defective meters, using hand tools. Examines parts of meter for wear and detects warped or bent parts, using straightedge. Soaks electric parts in chemical solutions to clean parts. Removes dirt from other parts, using brushes, sandpaper, and soap and water. Reassembles meter, using new or repaired parts. Turns setscrews or makes other adjustments required to bring meter accuracy within prescribed limits. May test meters for accuracy [Electric-Meter Tester (utilities)] or for correctness of assembly and dielectric strength, using testing apparatus. May repair demand register mechanism of demand meters. May repair such electric components as instrument transformers and relays. May install meters.

Installs, services, and repairs stoves, refrigerators, dishwashing machines, and other electrical household or commercial appliances, using hand tools, test equipment, and following wiring diagrams and manufacturer's specifications. Connects appliance to power source and test meters, such as wattmeter, ammeter, or voltmeter. Observes readings on meters and graphic recorders. Examines appliance during operating cycle to detect excess vibration, overheating, fluid leaks, and loose parts. Disassembles appliance and examines mechanical and electrical parts. Traces electrical circuits, following diagram, and locates shorts and grounds, using ohmmeter. Calibrates timers, thermostats, and adjusts contact points. Cleans and washes parts, using wire brush, buffer, and solvent, to remove carbon, grease, and dust. Replaces worn or defective parts, such as switches, pumps, bearings, transmissions, belts, gears, blowers, and defective wiring. Repairs and adjusts appliance motors. Reassembles appliance, adjusts pulleys, and lubricates moving parts, using hand tools and lubricating equipment. May be known according to appliance repaired as Clothes-Drier Repairer (any industry); Coffee-Maker Servicer (any industry); Dishwashing-Machine Repairer (any industry); Electric-Range Servicer (any industry); Electric-Refrigerator Servicer (any industry); Washing-Machine Servicer (any industry).

Plans layout, installs, and repairs wiring, electrical fixtures, apparatus, and control equipment. Plans new or modified installations to minimize waste of materials, provide access for future maintenance, and avoid unsightly, hazardous, and unreliable wiring, consistent with specifications and local electrical codes. Prepares sketches showing location of wiring and equipment, or follows diagrams or blueprints, ensuring that concealed wiring is installed before completion of future walls, ceilings, and flooring. Measures, cuts, bends, threads, assembles, and installs electrical conduit, using tools, such as hacksaw, pipe threader, and conduit bender. Pulls wiring through conduit, assisted by Electrician Helper (any industry) 829.684-022. Splices wires by stripping insulation from terminal leads, using knife or pliers, twisting or soldering wires together, and applying tape or terminal caps. Connects wiring to lighting fixtures and power equipment, using hand tools. Installs control and distribution apparatus, such as switches, relays, and circuit-breaker panels, fastening in place with screws or bolts, using hand tools and power tools. Connects power cables to equipment, such as electric range or motor, and installs grounding leads. Tests continuity of circuit to ensure electrical compatibility and safety of components, using testing instruments, such as ohmmeter, battery and buzzer, and oscilloscope. Observes functioning of installed equipment or system to detect hazards and need for adjustments, relocation, or replacement. May repair faulty equipment or systems [Electrician, Maintenance (any industry) 829.261-018]. May be required to hold license. May cut and weld steel structural members, using flame-cutting and welding equipment. May be designated according to work location as Mine Electrician (mine & quarry).

Installs and repairs electrical systems, apparatus, and electrical and electronic components of industrial machinery and equipment, following electrical code, manuals, schematic diagrams, blueprints, and other specifications, using hand tools, power tools, and electrical and electronic test equipment. Installs power supply wiring and conduit for newly installed machines and equipment, such as robots, conveyors, and $T3 programmable controllers $T1, following electrical code and blueprints, using hand tools and voltage tester. Connects power supply wires to machines and equipment, and connects cables and wires between machines and equipment, following manuals, schematic diagrams, and blueprints, using hand tools and test equipment. Diagnoses malfunctioning apparatus, such as transformers, motors, and lighting fixtures, using test equipment, and replaces damaged or broken wires and cables, using hand tools. Tests malfunctioning machinery, using test equipment, and discusses malfunction with other maintenance workers, such as Machine Repairer, Maintenance (any industry) 638.261-030 and Tool Maker, Maintenance (machine shop) 601.280-042, to diagnose malfunction. Replaces faulty electrical components of machine, such as relays, switches, and motors, and positions sensing devices, using hand tools. Diagnoses and repairs or replaces faulty electronic components, such as printed circuit boards [Electronics Tester (any industry) 726.261-018], using electronic test equipment and hand tools. Replaces electric motor bearings and rewires motors. May push buttons and press keys on robot controller, T3 teach pendant, T1 and programmable controller to program automated machinery, such as robots, to operate automated machinery, to test for malfunctions, and to verify repairs. May plan layout of wiring and install wiring, conduit, and electrical apparatus in buildings [Electrician (construction) 824.261-010]. May diagnose and replace faulty mechanical, hydraulic, and pneumatic components of machines and equipment. May be required to hold electrician's license. May be designated according to equipment repaired as Circuit-Breaker Mechanic (utilities); Electrician, Crane Maintenance (any industry); Electrician, Rectifier Maintenance (utilities); Salvage Repairer (utilities) I; Time Clock Repairer (elec. equip.); Transformer-Coil Winder (utilities); or according to work location as Electrician, Machine Shop (machine shop); Electrician, Refinery (petrol. refin.); Underground Repairer (utilities). May be designated: Watch Electrician (tel. & tel.); Wirer, Maintenance (utilities).

Repairs and maintains electrical equipment in generating station or powerhouse. Tests defective equipment to determine cause of malfunction or failure, using voltmeters, ammeters, and related electrical testing apparatus. Notifies plant personnel of necessary equipment downtime requiring changes from normal generating and transmission equipment operation to maintain uninterrupted service. Repairs and replaces equipment, such as relays, switches, supervisory controls, and indicating and recording instruments. Tests and repairs switchboard and equipment circuitry, interpreting wiring diagrams to trace and connect numerous wires carrying current for independent functions. Cleans and repairs brushes, commutators, windings, and bearings of generators, motors, and converters. May test and maintain transmission equipment, performing such duties as oiling circuit breakers and transformers [Electrician, Substation (utilities)].

Inspects, tests, and maintains substation electrical equipment, such as oil circuit breakers and transformers. Inspects and tests equipment to detect malfunctioning and determine resistance and load, using voltmeter and ammeter. Tests insulators and bushings of equipment for power leakage by imposing specified voltage on insulation through testing apparatus and calculating insulation loss. Tests oil in circuit breakers and transformers for dielectric strength [Transformer Tester (utilities)]. Repairs or rebuilds oil circuit breakers, transformers, and lightning arrestors by replacing worn parts. Disconnects voltage regulators for removal by other workers by loosening bolts and screws and connects replacement regulator to high-voltage line. Periodically replenishes oil in circuit breakers and transformers not needing repair. Inspects switches before repairing or replacing equipment to ensure power cutoffs. Does not repair electrical machinery, such as generators and converters [Electrician, Powerhouse (utilities)]. May set forms and pour concrete footings for heavy equipment installation. May paint, repair, and maintain substation buildings.

Repairs electronic equipment, such as computers, industrial controls, audio and video systems, radar systems, telemetering and missile control systems, transmitters, antennas, and servomechanisms, following blueprints and manufacturers' specifications, and using hand tools and test instruments. Converses with equipment operators to ascertain problems with equipment before breakdown, and to determine if breakdown is due to human error or mechanical problems. Tests faulty equipment and applies knowledge of functional operation of electronic units and systems to diagnose cause of malfunction. Tests electronic components and circuits to locate defects, using oscilloscopes, signal generators, ammeters, and voltmeters. Replaces defective components and wiring and adjusts mechanical parts, using hand tools and soldering iron. Aligns, adjusts, and calibrates equipment according to specifications. Calibrates testing instruments. Maintains records of repairs, calibrations, and tests. May enter information into computer to copy program from one electronic component to another, or to draw, modify or to store schematics, applying knowledge of software package used. May install equipment in industrial or military establishments and in aircraft and missiles. May operate equipment, such as communication equipment or missile control systems in ground and flight test, and be required to hold license from governmental agency. May be designated according to type of equipment repaired as Customer-Engineering Specialist (office machines); Electronics Mechanic, Computer (any industry); Radar Mechanic (any industry); Voting-Machine Repairer (government ser.).

Lays out, builds, tests, troubleshoots, repairs and modifies developmental and production electronic components, parts, equipment, and systems, such as computer equipment, missile control instrumentation, electron tubes, test equipment, and machine tool numerical controls, applying principles and theories of electronics, electrical circuitry, engineering mathematics, electronic and electrical testing, and physics. Discusses layout and assembly procedures and problems with Electronics ENGINEER (profess. & kin.) 003.061-030 and draws sketches to clarify design details and functional criteria of electronic units. Assembles experimental circuitry (breadboard) or complete prototype model according to engineering instructions, technical manuals, and knowledge of electronic systems and components. Recommends changes in circuitry or installation specifications to simplify assembly and maintenance. Sets up standard test apparatus or devises test equipment and circuitry to conduct functional, operational, environmental, and life tests to evaluate performance and reliability of prototype or production model. Analyzes and interprets test data. Adjusts, calibrates, aligns, and modifies circuitry and components and records effects on unit performance. Writes technical reports and develops charts, graphs, and schematics to describe and illustrate system's operating characteristics, malfunctions, deviations from design specifications, and functional limitations for consideration by engineers in broader determinations affecting system design and laboratory procedures. May operate bench lathes, drills, or other machine tools to fabricate parts, such as coils, terminal boards, and chassis. May check functioning of newly installed equipment in aircraft, ships, and structures to evaluate system performance under actual operating conditions. May instruct and supervise other technical personnel. May be designated according to specialization in electronic applications, as Computer-Laboratory Technician (profess. & kin.); Development-Instrumentation Technician (profess. & kin.); Electronic-Communications Technician (profess. & kin); Electronics Technician, Nuclear Reactor (profess. & kin); Experimental Electronics Developer (aircraft mfg.); Systems-Testing-Laboratory Technician (profess. & kin.).

Performs variety of electronic, mechanical, and electromechanical tests on electronic systems, subassemblies, and parts to ensure unit functions according to specifications or to determine cause of unit failure, using electronic test instruments: Reads test schedule, work orders, test manuals, performance specifications, wiring diagrams, and schematics to determine testing procedure and equipment to be used. Tests functional performance of systems, subassemblies, and parts under specified environmental conditions, such as temperature change, vibration, pressure, and humidity, using testing devices, such as temperature cabinets, shake-test machines, and centrifuges. Calibrates test instruments according to specifications. Connects unit to be tested to test equipment, such as signal generator, frequency meter, or spectrum analyzer. Reads dials or digital displays that indicate electronic characteristics, such as voltage, frequency, distortion, inductance, and capacitance. Compares results with specifications and records test data or plots test results on graph. Analyzes test results on defective units to determine cause of failure, applying knowledge of electronic theory and using electronic test equipment. Replaces defective wiring and components, using handtools and soldering iron, or records defects on tag attached to unit and returns unit to production department for repair. Confers with engineers, technicians, production personnel, and others regarding testing procedures and results and to resolve problems. May write computer programs to control semiconductor device and electronic component test equipment prior to testing, utilizing knowledge of programming techniques, electronics, test equipment, and testing specifications. May explain and demonstrate testing procedures to other workers. May verify dimensions of pins, shafts, and other mechanical parts, using calipers, vernier gauges, and micrometers. May operate x-ray equipment to verify internal assembly and alignment of parts according to specifications. May devise test equipment setup to evaluate performance and operation of nonstandard or customer returned units. May be designated according to unit tested as Memory-Unit Test Technician (electron. comp.); Television-Receiver Analyzer (electron. comp.); Transmitter Tester (electron. comp.); Tube-Test Technician (electron. comp.).

Assembles and installs electric and hydraulic freight and passenger elevators, escalators, and dumbwaiters, determining layout and electrical connections from blueprints. Studies blueprints and lays out location of framework, counterbalance rails, motor pump, cylinder, and plunger foundations. Drills holes in concrete or structural steel members with portable electric drill. Secures anchor bolts or welds brackets to support rails and framework, and verifies alignment with plumb bob and level. Cuts prefabricated sections of framework, rails, and other elevator components to specified dimensions, using acetylene torch, power saw, and disk grinder. Installs cables, counterweights, pumps, motor foundations, escalator drives, guide rails, elevator cars, and control panels, using hand tools. Connects electrical wiring to control panels and electric motors. Installs safety and control devices. Positions electric motor and equipment on top of elevator shaft, using hoists and cable slings. May be designated according to type of equipment installed as Elevator Constructor, Electric (construction); Elevator Constructor, Hydraulic (construction); Escalator Constructor (construction).

Sets up and operates machine to extrude thermoplastic materials to form tubes, rods, and film according to specifications. Installs dies, machine screws, and sizing rings, using hand tools. Couples hose to die holder to circulate steam, water, air, or oil to die. Weighs and mixes pelletized, granular, or powdered thermoplastic materials and coloring pigments in tumbling machine according to formula. Fills machine hopper with mixed materials, using conveyor auger, or stuffs rolls of plastic dough into machine cylinders. Starts machine and sets controls to regulate vacuum, air pressure, sizing rings, and temperature; and synchronizes speed of extrusion with pulling rolls. Examines extruded product for defects, such as wrinkles, bubbles, and splits. Measures extruded articles for conformance to specifications, using micrometers, calipers, and gauges. Adjusts speed and weight controls or turns hot and cold water, air, oil, or steam valves to obtain product of specified dimensions. Tests physical properties of product with acid-bath tester, burst tester, and impact tester. May reel extruded product into rolls of specified length and weight [Extruder-Operator Helper (plastic prod.; plastic-synth.)].

Controls and extinguishes fires, protects life and property, and maintains equipment as volunteer or employee of city, township, or industrial plant. Responds to fire alarms and other emergency calls. Selects hose nozzle, depending on type of fire, and directs stream of water or chemicals onto fire. Positions and climbs ladders to gain access to upper levels of buildings or to assist individuals from burning structures. Creates openings in buildings for ventilation or entrance, using ax, chisel, crowbar, electric saw, T3 core cutter, T1 and other power equipment. Protects property from water and smoke by use of waterproof salvage covers, smoke ejectors, and deodorants. Administers first aid and artificial respiration to injured persons and those overcome by fire and smoke. Communicates with superior during fire, using portable two-way radio. Inspects buildings for fire hazards and compliance with fire prevention ordinances. Performs assigned duties in maintaining apparatus, quarters, buildings, equipment, grounds, and hydrants. Participates in drills, demonstrations, and courses in hydraulics, pump operation and maintenance, and fire fighting techniques. May fill fire extinguishers in institutions or industrial plants. May issue forms to building owners, listing fire regulation violations to be corrected. May drive and operate firefighting vehicles and equipment. May be assigned duty in marine division of fire department and be designated Fire fighter, Marine (any industry).

Positions and climbs ladders to gain access to upper levels of buildings, or to rescue individuals from burning structures. Creates openings in buildings for ventilation or entrance, using ax, chisel, crowbar, electric saw, or core cutter. Selects hose nozzle, depending on type of fire, and directs stream of water or chemicals onto fire. Protects property from water and smoke, using waterproof salvage covers, smoke ejectors, and deodorants. Administers first aid and cardiopulmonary resuscitation to injured persons and those overcome by fire and smoke. Sprays foam onto runway, extinguishes fire, and rescues aircraft crew and passengers in air-crash emergency. Responds to fire alarms and other emergency calls. Assesses fire and situation, reports to superior, and receives instructions, using two-way radio. Establishes fire lines to prevent unauthorized persons from entering area. Drives and operates fire fighting vehicles and equipment.

Constructs built-in-place or prefabricated wooden forms, according to specifications, for molding concrete structures. Studies blueprints and diagrams to determine type and dimension of forms to be constructed. Saws lumber to blueprint dimensions, using handsaw or power saw, and nails lumber together to make form panels. Erects built-in-place forms or assembles and installs prefabricated forms on construction site according to blueprint specifications, using hand tools, plumb rule, and level. Inserts spreaders and tie rods between opposite faces of form to maintain specified dimensions. Anchors and braces forms to fixed objects, using nails, bolts, anchor rods, steel cables, planks, and timbers.

Repairs and rebuilds upholstered furniture, using handtools and knowledge of fabrics and upholstery methods: Removes covering, webbing, and padding from seat, arms, back, and sides of workpiece, using tack puller, chisel, and mallet. Removes defective springs by cutting cords or wires that hold them in place. Replaces webbing and springs or reties springs [Springer (furniture) 780.684-106]. Measures and cuts new covering material [Cutter, Machine (any industry) I 781.684-014]. Installs material on inside of arms, back, and seat, and over outside back and arms of wooden frame. Tacks or sews ornamental trim, such as braid and buttons, to cover or frame [Upholstery Trimmer (furniture) 780.684-126]. May operate sewing machine to seam cushions and join various sections of covering material. May repair wooden frame of workpiece. May refinish wooden surfaces [Furniture Finisher (woodworking) 763.381-010]. May upholster cornices and be designated Cornice Upholsterer (any industry). May repair seats, carpets, curtains, mattresses, and window shades of railroad coaches and sleeping cars and be designated Upholsterer (r.r. trans.).

Installs glass in windows, skylights, store fronts, and display cases, or on surfaces, such as building fronts, interior walls, ceilings, and tabletops. Marks outline or pattern on glass, and cuts glass, using glasscutter. Breaks off excess glass by hand or with notched tool. Fastens glass panes into wood sash with glazier's points, and spreads and smoothes putty around edge of panes with knife to seal joints. Installs mirrors or structural glass on building fronts, walls, ceilings, or tables, using mastic, screws, or decorative molding. Bolts metal hinges, handles, locks, and other hardware to prefabricated glass doors. Sets glass doors into frame and fits hinges. May install metal window and door frames into which glass panels are to be fitted. May press plastic adhesive film to glass or spray glass with tinting solution to prevent light glare. May install stained glass windows. May assemble and install metal-framed glass enclosures for showers and be designated Shower-Enclosure Installer (construction). May be designated according to type of glass installed as Glazier, Structural Glass (construction); Plate-Glass Installer (construction).

Performs any combination of following duties, as directed by Greenskeeper (any industry) I, to maintain grounds and turf of golf course in playing condition: Operates tractor, using specific attachments, to till, cultivate, and grade new turf areas, to apply prescribed amounts of lime, fertilizer, insecticide, and fungicide, and to mow rough and fairway areas at designated cut, exercising care not to injure turf or shrubs. Cuts turf on green and tee areas, using hand mower and power mower. Connects hose and sprinkler systems at designated points on course to irrigate turf. Digs and rakes ground to prepare new greens, grades and cleans traps, and repairs roadbeds, using shovels, rakes, spades, and other tools. May plant, trim, and spray trees and shrubs.

Installs, services, and repairs environmental control systems in residences, department stores, office buildings, and commercial establishments, utilizing knowledge of refrigeration theory, pipefitting, and structural layout. Mounts compressor and condenser units on platform or floor, using hand tools, following blueprints or engineering specifications. Fabricates, assembles, and installs ductwork and chassis parts, using portable metalworking tools and welding equipment [Duct Installer (construction; mfd. buildings.) 869.664-014]. Installs evaporator unit in chassis or in air duct system, using hand tools. Cuts and bends tubing to correct length and shape, using cutting and bending equipment and tools. Cuts and threads pipe, using machine-threading or hand-threading equipment. Joins tubing or pipe to various refrigerating units by means of sleeves, couplings, or unions, and solders joints, using torch, forming complete circuit for refrigerant [Pipe Fitter (construction) 862.281-018]. Installs expansion and discharge valves in circuit. Connects motors, compressors, temperature controls, humidity controls, and circulating-ventilation fans to control panels and connects control panels to power source [Electrician (construction) 824.261-010]. Installs air and water filters in completed installation. Injects small amount of refrigerant into compressor to test systems, and adds Freon gas to build up prescribed operating pressure. Observes pressure and vacuum gauges and adjusts controls to ensure efficient operation. Tests joints and connections for gas leaks, using gauges or soap-and-water solution. Wraps pipes in insulation batting and secures them in place with cement or wire bands. Replaces defective breaker controls, thermostats, switches, fuses, and electrical wiring to repair installed units, using electrician's hand tools and test equipment. May install, repair, and service air-conditioners, ranging from fifteen to twenty tons cooling capacity, in warehouses and factory buildings and be designated Air-Conditioning Mechanic, Industrial (any industry).

Prepare parts sketches and write work orders and purchase requests to be furnished by outside contractors. Draft detail drawing or sketch for drafting room completion or to request parts fabrication by machine, sheet or wood shops. Review project instructions and blueprints to ascertain test specifications, procedures, and objectives, and test nature of technical problems, such as redesign. Review project instructions and specifications to identify, modify and plan requirements fabrication, assembly and testing. Devise, fabricate, and assemble new or modified mechanical components for products, such as industrial machinery or equipment, and measuring instruments. Discuss changes in design, method of manufacture and assembly, and drafting techniques and procedures with staff and coordinate corrections. Set up and conduct tests of complete units and components under operational conditions to investigate proposals for improving equipment performance. Inspect lines and figures for clarity and return erroneous drawings to designer for correction. Analyze test results in relation to design or rated specifications and test objectives, and modify or adjust equipment to meet specifications. Evaluate tool drawing designs by measuring drawing dimensions and comparing with original specifications for form and function, using engineering skills.

Conducts experiments and investigations to determine methods of breeding, producing, storing, processing, and transporting of fruits, nuts, berries, vegetables, flowers, bushes, and trees. Experiments to develop new or improved varieties having higher yield, quality, nutritional value, resistance to disease, or adaptability to climates, soils, uses, or processes. Determines best method of planting, spraying, cultivating, and harvesting. May specialize in research, breeding, production, or shipping and storage of fruits, nuts, berries, vegetables, ornamental plants, or other horticultural products and be identified according to specialty. May prepare articles and give lectures on horticultural specialty.

Cleans rooms, hallways, lobbies, lounges, restrooms, corridors, elevators, stairways, and locker rooms and other work areas. Cleans rugs, carpets, upholstered furniture, and draperies, using vacuum cleaner. Dusts furniture and equipment. Empties wastebaskets, and empties and cleans ashtrays. Sweeps, scrubs, waxes, and polishes floors, using brooms and mops and powered scrubbing and waxing machines. Collects soiled linens for laundering, and receives and stores linen supplies in linen closet. Polishes metalwork, such as fixtures and fittings. Washes walls, ceiling, and woodwork. Washes windows, door panels, and sills. Transports trash and waste to disposal area.

Sets up and operates injection-molding machines to cast products from thermoplastic materials: Installs dies on machine, according to work order specifications, using clamps, bolts, and hand tools. Sets machine controls, regulating molding temperature, volume of plastic, molding pressure and time, according to knowledge of plastics and molding procedures. Dumps premixed plastic powders or pellets into hopper, and starts machine. Pulls lever to close dies and inject plastic into dies to cast part. Removes finished product from dies, using hand tools. Trims excess material from part, using knife. May mix thermoplastic materials and coloring pigments in mixing machine, according to formula. May grind scrap plastic into powder for reuse.

Installs, repairs, maintains, and adjusts indicating, recording, telemetering, and controlling instruments and test equipment, used to control and measure variables, such as pressure, flow, temperature, motion, force, and chemical composition, using precision instruments, and hand tools: Disassembles malfunctioning instruments or test equipment, such as bar graphs, electrical ovens, multi meters, environmental cabinets, and weather meters, and examines and tests mechanisms and circuitry for defects. Replaces or repairs defective parts, using hand tools. Reassembles instrument or test equipment, and tests assembly for conformance to specifications, using instruments, such as potentiometer, resistance bridge, manometer, and pressure gauge. Inspects instruments and test equipment periodically and adjusts calibration to ensure functioning within specified standards. May calibrate instruments or test equipment according to established standards. May be designated according to type of instrument repaired as Aircraft Instrument Repairer (air trans.); Panel-Instrument Repairer (any industry); X-Ray-Control-Equipment Repairer (any industry).

Inspects, tests, adjusts, and repairs electric, electronic, mechanical, and pneumatic instruments and systems used to indicate, record, and control generating operations in conventional or nuclear power electric generating plant. Inspects meters, indicators, and gauges to detect abnormal fluctuations. Tests accuracy of flow meters, pressure gauges, temperature indicators, controllers, radiation counters or detectors, and other recording, indicating or controlling instruments to locate defective components in system, using test equipment, such as pressure gauges, mercury manometers, potentiometers, pulse and signal generators, oscilloscopes, transistor curve tracers, and ammeters, voltmeters, and watt meters. Traces out and tests electronic solid state and vacuum tube circuitry and components to locate defective parts in analog and digital, protection, or radiation monitoring systems, using test equipment, schematics, and maintenance manuals. Removes defective instruments from system, decontaminates, disassembles, and cleans instruments, and replaces defective parts, using hand tools. Reassembles instruments and replaces instruments in system, using hand tools. Lubricates instruments and replaces defective wiring and tubing. Calibrates readings on instruments according to standards and adjusts phasing and aligns stages to ensure accuracy of recording and indicating function. Records calibrations made, parts and components used, and inventory of parts on hand. Prepares schematic drawings, sketches, and reports to reflect changes or alterations made in instruments, circuits, and systems. May be designated according to type of power plant as Nuclear-Plant-Instrument Technician (utilities); Instrument Repairer, Steam Plant (utilities).

Provide technical assistance to computer system users. Answer questions or resolve computer problems for clients in person, via telephone or from remote location. May provide assistance concerning the use of computer hardware and software, including printing, installation, word processing, electronic mail, and operating systems.

Plans and executes small scale landscaping operations and maintains grounds and landscape of private and business residences. Participates with Laborer, Landscape (agriculture) in preparing and grading terrain, applying fertilizers, seeding and sodding lawns, and transplanting shrubs and plants, using manual and power-operated equipment. Plans lawns, and plants and cultivates them, using gardening implements and power-operated equipment. Plants new and repairs established lawns, using seed mixtures and fertilizers recommended for particular soil type and lawn location. Locates and plants shrubs, trees, and flowers selected by property owner or those recommended for particular landscape effect. Mows and trims lawns, using hand mower or power mower. Trims shrubs and cultivates gardens. Cleans grounds, using rakes, brooms, and hose. Sprays trees and shrubs, and applies supplemental liquid and dry nutrients to lawn and trees. May dig trenches and install drain tiles. May make repairs to concrete and asphalt walks and driveways.

Safety, Chemical Spill Readiness, Pesticide Use, Install and Maintain Shrubs, Groundcover, and Turf Grass, Tree Installation and Maintenance, Measurement, Estimating, and Design, Constructing and Maintaining Facilities, Sprinkler and Low Voltage Lighting Systems, Preparing and Improving Soil, Operating Equipment, Equipment Maintenance Greenhouse Maintenance.

Fastens wooden, metal, or rock board lath to walls, ceilings, and partitions of buildings to provide supporting base for plaster, fireproofing, or acoustical material, using hand tools and portable power tools. Erects horizontal metal framework to which laths are fastened, using nails, bolts, and stud gun. Drills holes in floor and ceiling, using portable electric tool, and drives ends of wooden or metal studs into holes to provide anchor for furring or rock board lath. Wires horizontal strips to furring to stiffen framework. Cuts lath to fit openings and projections, using hand tools or portable power tools. Wires, nails, clips, or staples lath to framework, ceiling joists, and flat concrete surfaces. Bends metal lath to fit corners, or attaches preformed corner reinforcements. Wires plasterer's channels to overhead structural framework to provide support for plaster or acoustical ceiling tile. May install metal casings around openings, metal window stools, and metal trim and plaster grounds (wood or metal strips) nailed to studding to provide guide for Plasterer (construction). May weld metal frame supports to steel structural members. May be designated according to type of lath applied as Metal Lather (construction); Rock board Lather (construction); Wood Lather (construction); or according to task performed as Metal Furrer (construction).

Erects, maintains, and repairs wood poles and prefabricated light-duty metal towers, cable, and related equipment to construct transmission and distribution power lines used to conduct electrical energy between generating stations, substations, and consumers. Directs and assists Ground Helpers (tel. & tel.; utilities) in attaching crossarms, insulators, lightning arresters, switches, wire conductors, and auxiliary equipment to poles preparatory to erection, as instructed by Line Supervisor (utilities), and assists in erection of poles or towers and adjustment of guy wires. Climbs erected poles or towers and installs equipment, such as transformers, which are ordinarily installed after poles are erected. Strings wire conductors between erected poles with assistance of Ground Helpers (tel. & tel.; utilities) and adjusts slack in conductors to compensate for contraction and elongation of conductors due to temperature variations, using winch. Splices, solders, and insulates conductors and related wiring to join sections of power line, and to connect transformers and electrical accessories. May trim trees and brush prior to new construction, during repair of damaged lines, or as part of routine maintenance [Tree Trimmer (tel. & tel.; utilities)].

Installs and repairs telephone and telegraph lines, poles, and related equipment, according to diagrams, and using electrician's hand tools. Digs holes, using power auger or shovel, hoists poles upright in holes, using truck-mounted winch, and fills and tamps holes, using cement, earth, and tamping device. Ascends poles or enters tunnels and sewers to cut in feeder lines, attach appliances, such as terminal boxes and repeaters, and repair or replace defective lines and auxiliary equipment. Unreels and strings lines from pole to pole and from pole to building, installs hardware, such as conduits and insulators, and attaches appliances on lines. Pulls lines through ducts by hand or with use of winch. When assisting in installation and removal of plant equipment, such as call boxes and clocks, in city locations, may be designated Line Installer-Repairer, City (tel. & tel.). When patrolling telephone lines between communities, may be designated Toll-Line Repairer (tel. & tel.). When patrolling telephone or telegraph lines between two established points or in designated areas, may be designated Line Maintainer, Section (tel. & tel.).

Installs, maintains, and repairs telephone and telegraph and electrical power lines between installations of industrial plant. Directs workers in setting poles. Climbs poles and installs hardware, lightning arresters, telephone repeaters, telephone and telegraph wires, and other equipment [Line Installer-Repairer (tel. & tel.)]. Installs electrical power cables and auxiliary equipment [Line Erector (construction; utilities)]. Makes repairs and replacements to maintain lines. May be designated according to area of operations as Line Maintainer, District (any industry).