- Settore: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who casts mixture of concrete and aggregate in mold to form plain or decorative structural panels according to specifications and approved samples. Respnsibilities include:
* Fits wooden sides of mold together and fastens them in place with wood clamps and bolts, using power wrench.
* Sprays or brushes acid and oil solution on inside of mold to prevent concrete from adhering to mold and to retard setting of concrete.
* Shovels and spreads mixed concrete and facing aggregate into mold and tamps mix with pneumatic vibrator to distribute facing evenly and to form facing of required thickness.
* Positions and fastens reinforcing materials, such as steel rods, wire mesh, hanger plates, and hoisting hooks in mold by hand, following specifications, using rule, gauges, wrenches, and wood clamps.
* Places hoist chain hooks in position on hopper filled with concrete backing mixture and moves controls of hoist to lift and position hopper over mold.
* Pushes hand lever of hopper to release backing mixture into mold and tamps mixture with pneumatic vibrator.
* Puddles and levels off casting, using wooden screed, and smooths surface with trowel.
* Unbolts wood clamps, using power wrench, and removes sides of mold by hand.
* Inserts overhead crane hooks in hoisting hook and presses hoist control buttons to lift casting and strikes mold, using rubber hammer, to separate casting from mold.
* Lowers casting onto skids and transports castings to storage area, using hydraulic lift truck.
* Brushes and scrapes concrete from sides and bottom of mold preparatory to next casting.
* May cast colored floor and roof slabs, highway dividers, ornamental flower pots, and grave markers.
Industry:Professional careers
A professional who operates auger-press to press clay products, such as sewer pipe, drainpipe, and flue tile from tempered clay. Respnsibilities include:
* Installs and adjusts extrusion dies, cores, rings, formers, and cutoff knives according to type of product, using handtools, calipers, and ring gauge.
* Moves levers to adjust automatic oilers.
* Starts press that forms, extrudes, and cuts clay to specified shape and length.
* Measures product for conformance to specifications, using scale and calipers.
* May move lever to position extruded tile or pipe column for cutting by die tripper.
* May direct die tripper to change press dies.
* May be designated according to product pressed as drain-tile-press operator; flue-tile-press operator; sewer-pipe-press operator.
Industry:Professional careers
A professional who tends machine that spins steel cylinder as inner surface is coated with concrete mortar to make reinforced concrete pipe. Respnsibilities include:
* Lifts and rolls cylinder onto belt cradle of machine, using hoist, and aligns hot air blower with cylinder opening.
* Starts machine which rotates cylinder and signals bucket operator to feed mortar into rotating cylinder.
* Starts blower which vaporizes and removes moisture from mortar as cylinder spins.
* Stops machine when inner surface of cylinder is lined with layer of mortar.
* Slides rod through interlocking metal ends of lifting straps and moves cylinder to storage area, using hoist.
Industry:Professional careers
A professional who operates machine to press dry tempered clay or silica into brick and other shapes. Respnsibilities include:
* Selects and installs upper and lower pressing dies, using rule and hand wrenches.
* Starts machine and observes flow of clay and pressing process.
* Measures brick with set-limit gauge and turns handwheel to adjust die.
* Removes bricks from press bed and stacks bricks in specified pattern on kiln car.
* Signals general laborer to move loaded car and bring up empty car.
* May be designated according to material pressed as clay-dry-press operator; silica-dry-press operator.
Industry:Professional careers
A professional who controls temperature of bushings and speed of winders on fiberglass forming machines to maintain specified yardage per pound in sliver. Respnsibilities include:
* Monitors bushing control panels, temperature charts, and indicators to determine if temperature of furnace bushings, molten glass over bushings, forehearths, and canals meet specifications.
* Obtains test skein of sliver from test-skein winder and dries skein for specified time in electric furnace.
* Weighs dried test skein to obtain weight in grams and converts weight to yards per pound to determine deviations from specifications, using yardage conversion chart.
* Turns digital dial on bushing control panel to regulate temperature of bushings.
* Tests voltage on compensator units that vary speed of collets (winding rings), using voltage meter.
* Determines bushing temperature specified for voltage reading from table and turns button to set temperature and regulate speed of collet.
* Records data, such as shift, crew, date, time of temperature reading, time of yardage reading, type of sliver produced, temperatures, and adjustments made, in yardage control log.
Industry:Professional careers
A professional who performs any combination of following tasks to coat concrete pipe in metal molds. Respnsibilities include:
* Slides prepared wire mesh cage into mold and secures cage with short lengths of wire.
* Places cotton rope gasket between flanges along length of split mold.
* Bolts mold halves together and fastens bell ring and guide wheels into place, using hand and power wrenches.
* Signals operator of hoist or industrial truck to transfer mold onto wheels of spinning machine.
* Starts spinning machine and adjusts controls of filling machine to feed wet concrete into spinning mold, to specified level.
* Increases speed of rotating mold for specified length of time to set concrete.
* Pushes pole and brush against inside of spinning pipe to finish surface.
* Signals worker to move mold to curing area or uses chain hoist.
* Covers mold with plastic tarpaulin and turns on steam to cure concrete.
* Removes, cleans, and oils mold when concrete is cured, using hand and power wrenches and brushes.
* May adjust filling machine to accommodate size of pipe, using handtools.
Industry:Professional careers
A professional who tends machine that casts concrete draintile or pipe by either of following methods. Respnsibilities include:
* (1) Positions metal mold specified for pipe size on floor stand of machine beneath core and spout.
* Lowers core into mold and pulls overhead tamping bar into position in mold.
* Starts machine to rotate mold and activate tamping bar.
* Releases supply of wet concrete from hopper into mold.
* Trowels concrete at top of filled mold to level off end of pipe.
* Stops machine for removal of mold by pipe stripper.
* (2) Positions and bolts pallet rings specified for pipe size to turntable and bottom of feed table.
* Positions and screws packer head on drive shaft.
* Resets trip lever to adjust feed table height.
* Starts machine which lowers packer head into mold and conveys supply of concrete to feed table.
* Rakes concrete from feed table into mold as packer head rises and descends to tamp concrete in mold.
* Steps on pedal to rotate turntable for automatic removal of filled mold and positioning of empty mold.
* Feels concrete and signals worker to increase or decrease moisture of mixture.
* May be designated according to type of product made as drain-tile machine operator; or according to type of machine tended as packerhead-machine operator.
Industry:Professional careers
A professional who tends machine that cuts extruded tile or pipe clay column to specified lengths. Respnsibilities include:
* Swabs press die with oil between operations to prevent adhesion of clay.
* Moves levers in coordination with movements of machine and auger press operator, manual control to form bell or socket of pipe and to cut it to size.
* May change press dies.
Industry:Professional careers
A professional who tends machine that cuts extruded tile or pipe clay column to specified lengths. Respnsibilities include:
* Swabs press die with oil between operations to prevent adhesion of clay.
* Moves levers in coordination with movements of machine and auger press operator, manual control to form bell or socket of pipe and to cut it to size.
* May change press dies.
Industry:Professional careers
A professional who tends machine that coats external surface of rotating steel cylinder with concrete mortar to make reinforced concrete pipe. Respnsibilities include:
* Pulls lever to open chucks of machine and signals worker to position cylinder between chucks.
* Closes chucks to secure cylinder for spinning and presses button to rotate cylinder and move it along track at preset rate.
* Moves lever to regulate flow of mortar between revolving brushes or into space between two parallel moving belts which compress mortar and spray or throw mortar onto exterior of rotating cylinder moving along track.
* Stops machine, releases chucks, and signals industrial-truck operator to remove mortar coated cylinder to curing area.
Industry:Professional careers
