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Engineering Testing Aid I

Los Angeles County Public Works
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Essential Job Functions

  •  Fills with a shovel, lifts onto a pickup truck, and transports bags of soil weighing approximately 90 pounds to the materials lab for analysis.
  •  Lifts asphalt cores and core barrels, weighing approximately 40 pounds, for asphalt pavement laboratory testing, and conducts field samplings of soils for California Bearing Ratio tests. 
  • Lifts and shifts the position of 40-pound loaded sieves in the prep room. 
  • Digs holes 8 inches in diameter and 4 feet deep in firm, dense soil using a manual posthole digger. 
  • Prepares samples for testing, including identifying, dating, separating, and logging information on samples. 
  • Tests soil samples for compaction, consolidation, moisture content, shear strength, specific gravity, and bearing value. 
  • Tests sand and rock samples for grading, abrasion resistance, specific gravity, sand equivalency, and plastic limits. 
  • Tests paving liquid and emulsified asphalt samples for flash point, viscosity, heat loss, sieve retention, penetration, stripping, softening point, and residue by evaporation. 
  • Tests asphalt and concrete for specific gravity, setting time, oil content, screen analysis, etc. 
  • Performs the simpler phases of a wide variety of specialized materials tests. 
  • Acts as a helper in a field crew operating test boring equipment. 
  • Records and makes computations on test data and prepares report forms and graphs.
  • Operates testing machines and equipment in making physical tests. 
  • Performs clean-up and minor maintenance work, keeping the laboratory and testing equipment in clean and workable condition. 
  • Performs other field sampling and testing work as required.

REQUIREMENTS TO QUALIFY:

OPTION I: High school diploma, its equivalent, or higher*.

OPTION II: Six (6) months of construction, maintenance, or manual labor experience.

*Includes: a recognized high school equivalency credential, such as GED, or an associate’s degree or higher from an accredited college or university**.

LICENSE: A valid California Class C Driver License or the ability to utilize an alternative method of transportation when needed to carry out job-related essential functions.