Terrazzo Worker / Finisher

Apply a mixture of cement, sand, pigment, or marble chips to floors, stairways, and cabinet fixtures to fashion durable and decorative surfaces.

O*NET reports this occupation under titles such as: Grinder; Installer; Terrazzo Finisher; Terrazzo Grinder; Terrazzo Installer; Terrazzo Journeyman; Terrazzo Laborer; Terrazzo Mechanic; Terrazzo Tile Setter; Terrazzo Worker

Tasks

• Measure designated amounts of ingredients for terrazzo or grout, according to standard formulas and specifications, using graduated containers and scales, and load ingredients into portable mixer.
• Grind surfaces with a power grinder, or polish surfaces with polishing or surfacing machines.
• Cut metal division strips and press them into the terrazzo base for joints or changes of color to form designs or patterns or to help prevent cracks.
• Blend marble chip mixtures, place into panels, and push a roller over the surface to embed the chips.
• Modify mixing, grouting, grinding, or cleaning procedures, according to type of installation or material used.
• Spread, level, or smooth concrete or terrazzo mixtures to form bases or finished surfaces, using rakes, shovels, hand or power trowels, hand or power screeds, or floats.
• Grind curved surfaces or areas inaccessible to surfacing machine, such as stairways or cabinet tops, with portable hand grinder.
• Wash polished terrazzo surface, using cleaner and water, and apply sealer and curing agent according to manufacturer's specifications, using brush or sprayer.
• Position and secure moisture membrane and wire mesh in preparation for pouring base materials for terrazzo installation.
• Fill slight grinding depressions with matching grout material and hand-trowel for a smooth, uniform surface.
• Clean installation site, mixing and storage areas, tools, machines, and equipment, and store materials and equipment.
• Sprinkle colored marble or stone chips, powdered steel, or coloring powder over surface to produce prescribed finish.
• Wet surface to prepare for bonding, fill holes and cracks with grout or slurry, and smooth with a trowel.
• Mix cement, sand, and water to produce concrete, grout, or slurry, using hoe, trowel, tamper, scraper, or concrete-mixing machine.
• Chip, scrape, or grind high spots, ridges, or rough projections to finish concrete, using pneumatic chisel, hand chisel, or other hand tools.

Knowledge

• Building and Construction
• Design
• Mathematics
• English Language
• Administration and Management
• Customer and Personal Service
• Mechanical
• Chemistry
• Public Safety and Security

Abilities

• Manual Dexterity
• Multilimb Coordination
• Trunk Strength
• Near Vision
• Arm-Hand Steadiness
• Finger Dexterity
• Extent Flexibility
• Far Vision
• Problem Sensitivity
• Visualization
• Control Precision
• Static Strength
• Stamina
• Information Ordering
• Selective Attention
• Dynamic Strength
• Visual Color Discrimination