City of Detroit, MI - Detroit, MI

posted 8 days ago

Full-time - Entry Level
Detroit, MI
Executive, Legislative, and Other General Government Support

About the position

Under general supervision, working alone or with an assistant in a laboratory or in the field, performs standardized laboratory tests on a variety of highway materials and soils. This position involves conducting tests to determine various properties of materials, instructing others in testing procedures, and ensuring the proper maintenance of sampling equipment.

Responsibilities

  • Conducts standardized tests on highway materials and soil samples to determine properties such as specific gravity, viscosity, ductility, plastic limit and index, demulsibility, shrinkage ratio and limit, softening point, melting point, penetration, porosity, and compaction characteristics.
  • Performs sieve analysis, oxidation recovery tests, abrasion tests, soundness loss tests, bitumen, carbon, and moisture content tests, unconfined compression tests, transverse shear tests, visual inspection tests, pentameter tests, etc.
  • Instructs others in testing procedures.
  • Records test data.
  • Performs routine calculations.
  • Lays out and drafts sub-soil profiles.
  • Acts as a leader of a crew engaged in cutting paving samples from streets.
  • Locates points in streets at which paper course separators have been placed by measuring predetermined points.
  • Lays out and divides sample rectangles for cutting.
  • Preserves samples for analysis.
  • Ensures sampling equipment is maintained in proper operating condition.

Requirements

  • High School graduation or GED, including coursework in chemistry and physics.
  • One year of experience in testing samples of soil and highway materials.
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