Compact materials to create level bases.

Compact materials to create level bases. is a detailed work activity in O*NET — a concrete unit of work shared across 11 occupations and seen in 15 occupation-specific tasks. It rolls up into the broader work activity Perform general construction or extraction activities. in Performing General Physical Activities .

Detailed work activities are the most granular shared layer in O*NET's work-activity hierarchy (Generalized → Intermediate → Detailed → occupation-specific task). The figures below describe how this activity shows up across the economy and what independent studies measure about AI and this kind of work — not a prediction that the work will be automated.

AI exposure

Of the 15 tasks under this activity that the OpenAI / Eloundou “GPTs are GPTs” study rated, 0 (0%) are flagged as directly exposed to language models (E1) or exposed via model-powered tools (E2).

Exposure estimates overlap with model capabilities — whether a model could speed the task up — not whether the work will be done by software. Observed AI use is augmentation and assistance today, not jobs replaced.

Member tasks

Occupation-specific tasks O*NET maps to this detailed work activity, most important first.

• Grade or level trench bases, using tamping machines or hand tools. · Pipelayers · importance 4.4 · no direct exposure
• Prepare base for installation by removing unstable or unsuitable materials, compacting and grading the soil, draining or stabilizing weak or saturated soils and taking measures to prevent water penetration and migration of bedding sand. · Segmental Pavers · importance 4.4 · no direct exposure
• Sweep sand into the joints and compact pavement until the joints are full. · Segmental Pavers · importance 4.1 · no direct exposure
• Screed sand level to an even thickness, and recheck sand exposed to elements, raking and rescreeding if necessary. · Segmental Pavers · importance 4.1 · no direct exposure
• Dump, spread, and tamp asphalt, using pneumatic tampers, to repair joints and patch broken pavement. · Highway Maintenance Workers · importance 4.0 · no direct exposure
• Compact bedding sand and pavers to finish the paved area, using a plate compactor. · Segmental Pavers · importance 4.0 · no direct exposure
• Dig ditches or trenches, backfill excavations, or compact and level earth to grade specifications, using picks, shovels, pneumatic tampers, or rakes. · Construction Laborers · importance 3.9 · no direct exposure
• Clean, grade, or level ballast on railroad tracks. · Rail-Track Laying and Maintenance Equipment Operators · importance 3.9 · no direct exposure
• Drive graders, tamping machines, brooms, or ballast spreading machines to redistribute gravel or ballast between rails. · Rail-Track Laying and Maintenance Equipment Operators · importance 3.8 · no direct exposure
• Operate power vibrator to compact concrete. · Cement Masons and Concrete Finishers · importance 3.7 · no direct exposure
• Operate tamping machines or manually roll surfaces to compact earth fills, foundation forms, and finished road materials, according to grade specifications. · Paving, Surfacing, and Tamping Equipment Operators · importance 3.5 · no direct exposure
• Cover repaired pipes with dirt, and pack backfilled excavations, using air and gasoline tampers. · Septic Tank Servicers and Sewer Pipe Cleaners · importance 3.4 · no direct exposure
• Fill and tamp holes, using cement, earth, and tamping devices. · Telecommunications Line Installers and Repairers · importance 3.3 · no direct exposure
• Operate compactors, scrapers, or rollers to level, compact, or cover refuse at disposal grounds. · Operating Engineers and Other Construction Equipment Operators · importance 3.3 · no direct exposure
• Secure stakes to grids for constructions of footings, nail scabs to footing forms, and vibrate and float concrete. · Helpers--Carpenters · importance 3.3 · no direct exposure

Occupations that perform this

• Pipelayers
• Segmental Pavers
• Highway Maintenance Workers
• Construction Laborers
• Rail-Track Laying and Maintenance Equipment Operators
• Cement Masons and Concrete Finishers
• Paving, Surfacing, and Tamping Equipment Operators
• Septic Tank Servicers and Sewer Pipe Cleaners
• Operating Engineers and Other Construction Equipment Operators
• Telecommunications Line Installers and Repairers
• Helpers--Carpenters

Sources for this page

Every figure above traces to a named public dataset and the exact release below — not hand-written opinion. See the full methodology for what each measure does and does not mean.

• O*NET 30.3 U.S. Department of Labor / National Center for O*NET Development
• “GPTs are GPTs” (Eloundou et al.) arXiv 2303.10130 OpenAI / academic

Data compiled June 2, 2026. Figures are estimates, not advice.

@misc{singulariki-compact-materials-to-create-level-bases,
  title  = {Compact materials to create level bases.},
  author = {{Singulariki}},
  year   = {2026},
  note   = {O*NET 30.3; “GPTs are GPTs” (Eloundou et al.) arXiv 2303.10130. Accessed June 7, 2026},
  url    = {https://singulariki.com/detailed-activities/compact-materials-to-create-level-bases}
}