Quality, Service & Commitment

INTERRA NEWS

  • 22 Jan 2018

    Civil Engineer Needed

  • 08 Dec 2017

    INTERRA Honored With 2017 IRTBA Green Industry Achievement Award For Green Initiatives

  • 26 Oct 2017

    INTERRA To Host Ribbon Cutting With Bolingbrook Mayor Celebrating Going Green

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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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Little Village High School, Chicago, IL

INTERRA Services

During the demolition phase, INTERRA provided field compaction testing of the backfill material. In addition, the exposed subgrade after removal of the foundations was approved, prior to placement of the fill material. During the construction of the school, INTERRA provided bearing pressure tests for the foundations, field soil compaction testing for backfill material in the foundations and floor areas. Concrete testing was performed in the field including re-bar inspection during the placement of the concrete. Mortar and Grout sampling was also performed. Random sampling and testing of the CMU blocks and bricks was also performed. Structural steel testing consisted of weld inspections, shear stud testing, magnetic particle testing and bolted connection testing. Continuos roof inspection services were provided through our subconsultant. Asphalt testing services were provided for the parking areas.

 

Project Summary

The campus is comprised of four autonomous small schools: Multicultural Arts H.S., World Language H.S., Social Justice H.S., and Infinity: Math, Science, and Technology High School. The new school consisted of over 250,000 square foot area with basketball courts, swimming pools and auditorium.