Quality, Service & Commitment

INTERRA NEWS

  • 19 Sep 2018

    INTERRA Selected As Finalist To Receive The 2018 Illinois Sustainability Award

  • 08 May 2018

    IRTBA Announces INTERRA President To Serve On Green Council Board Of Directors

  • 28 Apr 2018

    INTERRA AWARDED IDOT PTB 187, ITEM 4 PROJECT

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Certified

Laboratory Certifications

  • IL & WI State DOTs
  • ASTM
  • AASHTO
  • USACE

 

Firm Certifications

  • DBE with IDOT
  • MBE with City of Chicago

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Testimonials

With this letter we provide our confidence in INTERRA in providing comprehensive field and laboratory testing for projects involving soils investigations, design and construction monitoring … Their services are consistently ontime and within budget…

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Neal F. Simeon Career Academy, Chicago, IL

INTERRA Services

Bearing pressure tests for the foundations

Field soil compaction testing for backfill material in the foundations and floor areas

Concrete field testing including re-bar inspection during the placement of the concrete

Mortar and Grout sampling and testing

Random sampling and testing of the CMU blocks and bricks

Structural steel testing consisting of weld inspections, shear stud testing, magnetic  particle testing and bolted connection testing

Asphalt testing services for the parking areas

Project Background

The new school consisted of over 150,000 square foot area with basketball courts, swimming pools and auditorium.