Construction Materials Testing

Stu Sieves in Lab

Laboratory Soil Classification: Quality Control for Engineering Design and Inspection

Sieves are an integral part of soil classification. Sieving a soil sample of a known dry weight by shaking it through a stack of sieves of designated sizes produces what’s known as a grain size distribution curve. This provides information about what proportion of the soil is composed of fines, sand, and gravel. Combined with …

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MTA – SW204, Baltimore, Maryland

FTG installed two automated extensometers adjacent to Baltimore’s Light Rail tracks for monitoring during tunnel boring operations. Throughout the construction of the new stormwater culvert, extensometers will provide an early warning system for settlement of both the overburden soils and track foundation; thus allowing for real time adjustments to construction methodology toward less impact and …

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