Case Studies: Case Studies - Construction Materials

PVC Pipe Failure Results from Improper Installation

Polyvinylchloride (PVC) is one of the most widely produced plastics in the world and accounts for approximately 70% of new buried water distribution and sanitary sewer pipes being installed in the U.S. and Canada today. With so much more PVC in use today, there are more situations in which pipes can fail. Whether caused by ...
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Failure Analysis Determines Faulty Workmanship to be Cause of Defective Building Materials

RJ Lee Group's petrographic scientists used in-house laboratory capabilities to prove that poor workmanship—rather than faulty materials—was the cause of delamination and cracking in stucco used in a residential construction project.
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Product Failure Analysis: Consumer Product Affected by Inappropriate Raw Material

When homeowners issued complaints about staining on roofing shingles, the manufacturer took action. Through a full-scale forensic investigation, RJ Lee Group determined the source of failure and maintained the client's reputation.
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Establishing the WTC Dust Signature: Managing Post 9/11 Environmental and Damage Assessments

RJ Lee Group served as the lead scientific management team, collecting and processing more than 100,000 samples over a three-year period — the most comprehensive environmental impact study ever performed in Class-A building structures.
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A Test Chamber Designed to Measure Respirable Dust for Product Stewardship

RJ Lee Group designed and constructed a test chamber to simulate a controlled environment in which we could sample for respirable dust.
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Analyses Reveal Viaduct Concrete Failure Not Consistent

RJ Lee Group was retained to provide information on the current state of the concrete, failure analysis, and an estimation of service life for a viaduct on a main north-south highway that handled approximately 75,000 vehicles a day.
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