{"schemaVersion":"1.0","exportedAt":"2026-05-15T12:39:12.942Z","occupation":{"soc":"47-2053.00","title":"Terrazzo Workers and Finishers","group":"Construction & Extraction","sector":"23","jobZone":2,"jobZoneInferred":false},"framework":{"version":"v.26.05","description":"","contextCovered":"This framework covers the full craft lifecycle of terrazzo installation and finishing — from entry-level mixing and material handling through autonomous floor design, surface refinement, and crew leadership — in residential, commercial, and institutional construction environments.","levels":{"emerging":{"label":"Emerging","statements":["Terrazzo ingredients and measuring containers — identify and handle under direct supervision when preparing standard mixes on a residential or commercial job site.","Portable mixer loading procedures — follow step-by-step using graduated containers and scales to achieve specified mix ratios under a journeyman's guidance.","Metal division strips — cut to designated lengths and press into a prepared terrazzo base under direct instruction to form basic joints or color transitions.","Marble chip mixtures — blend and place into panels following a standard formula, then pass a hand roller over the surface to begin embedding chips under supervision.","Power grinder and polishing machine — operate under close oversight to grind or surface flat terrazzo panels on a controlled interior job site.","Concrete and terrazzo mixtures — spread and roughly level using rakes and shovels on a prepared substrate while following verbal directions from a lead worker.","Hand trowels and floats — use to smooth freshly placed terrazzo surfaces on straightforward flat sections under a trainer's observation.","Terrazzo sealer and curing agent — apply by brush or sprayer to a polished surface following manufacturer's written specifications under direct supervision.","Basic job-site safety rules and personal protective equipment — demonstrate correct use when working around power grinders and chemical sealers on an active construction floor.","Simple design patterns using division strips — recognize and replicate from provided drawings during entry-level layout tasks on a supervised interior floor installation."]},"developing":{"label":"Developing","statements":["Standard terrazzo mix formulas — measure and batch with reduced oversight, adjusting ingredient quantities using scales and graduated containers for routine residential and light-commercial installations.","Power grinder and surfacing machine — operate independently to grind and polish flat terrazzo surfaces, maintaining consistent speed and pressure to meet specified finish tolerances.","Metal division strips — cut, fit, and press into terrazzo bases with limited supervision to create accurate joints, color boundaries, and crack-prevention lines on mid-complexity floor designs.","Marble chip panels — blend chip mixtures to specification, place evenly into framed panels, and embed thoroughly with a roller to achieve uniform surface texture on standard commercial projects.","Mixing and grouting procedures — modify routine sequences based on material type or substrate condition, such as switching from wet-mix to dry-mix methods on varied interior surfaces.","Hand and power trowels and screeds — use to spread, level, and finish terrazzo bases to grade across straightforward floor sections with minimal direction from a lead worker.","Portable hand grinder — apply to curved surfaces and confined areas such as stair treads and cabinet edges to achieve consistent finish where machine access is restricted.","Post-polish cleaning sequence — wash terrazzo surfaces with appropriate cleaner, then apply sealer and curing agent per manufacturer's specifications, working independently on standard interior floors.","Quality control checks — inspect finished terrazzo surfaces for voids, surface defects, and pattern alignment, recording observations and flagging non-conformances to a supervisor.","Coordination with other trades on the job site — schedule grinding and finishing tasks around concrete curing timelines and adjacent construction activities to maintain project progress."]},"proficient":{"label":"Proficient","statements":["Terrazzo mix formulas and ingredient ratios — calculate, modify, and batch independently for a full range of installation types, including Venetian, rustic, and epoxy systems, on complex commercial projects.","Grinding and polishing sequences — plan and execute multi-stage surface refinement programs using power surfacing machines and hand grinders to meet specified grit and gloss levels across large floor areas.","Division strip layout and installation — design and set intricate geometric or custom-logo patterns in terrazzo bases without oversight, ensuring structural joint requirements are satisfied throughout the installation.","Marble chip blending and embedding — select chip grades and color combinations, place and roll panels to achieve specified visual and textural outcomes for non-standard or architecturally demanding designs.","Procedural modifications for specialized substrates — assess installation conditions such as radiant-heat slabs, historic restorations, or elevated moisture environments and independently adapt mixing, grinding, and sealing processes.","Full surface finishing from base coat to final seal — execute spreading, leveling, grinding, polishing, washing, and sealing operations as a continuous workflow on large-scale interior commercial and institutional floors.","Portable grinder techniques on complex geometry — perform finish grinding on stairways, columns, curved thresholds, and countertops to production quality standards without assistance.","Sealer and curing-agent selection — evaluate substrate porosity and traffic-use requirements to choose appropriate products and apply them correctly, ensuring long-term durability on high-use commercial surfaces.","Troubleshooting surface defects — diagnose and remediate pitting, delamination, color inconsistency, or cracking in existing or newly placed terrazzo and implement corrective actions to restore specified quality.","Project mathematics and material estimation — calculate surface areas, compute ingredient quantities, and prepare accurate material take-offs for full terrazzo scopes on multi-room commercial installations."]},"advanced":{"label":"Advanced","statements":["Crew training and skills development — design and deliver hands-on instruction for emerging and developing terrazzo workers, covering mix proportioning, grinding sequences, and safety practices across active commercial job sites.","Project planning and scheduling — establish installation sequences, material procurement timelines, and equipment logistics for large-scale terrazzo contracts involving multiple crews and subcontractor interfaces.","Quality assurance program oversight — develop and enforce inspection standards for mix consistency, surface finish tolerances, and sealer application, ensuring compliance with architectural specifications and contract requirements on major projects.","Custom design interpretation and execution — collaborate with architects and designers to translate complex artistic floor patterns, logos, and mosaics into buildable terrazzo specifications and lead their installation on high-profile facilities.","Procedure standardization and process improvement — author written installation procedures and best-practice guides that reduce rework, improve finish quality, and increase crew productivity across the organization.","Estimating and cost control — prepare detailed bid documents, control material waste, and monitor labor productivity against budgets for multi-phase terrazzo contracts valued at significant commercial scale.","Safety and regulatory compliance leadership — maintain current knowledge of OSHA construction standards and silica-dust regulations, implement site-specific safety plans, and conduct toolbox talks for all terrazzo crews.","Equipment maintenance program management — establish preventive maintenance schedules for power grinders, polishing machines, and mixers, and mentor workers in equipment inspection and minor repair to minimize downtime.","Client and stakeholder communication — present project status, address quality concerns, and negotiate scope adjustments with general contractors, building owners, and facility managers throughout the life of complex commercial installations.","Mentorship and career pathway development — identify high-potential workers, structure apprenticeship progressions, and coordinate with trade associations or vocational programs to build a sustainable pipeline of skilled terrazzo craftspeople."]}}},"sources":{"onet":"v30.2 (CC BY 4.0)","crosswalk":"https://skillscrosswalk.com","generator":"LER.me"},"attribution":"© EBSCOed"}