Bluestone Rail Facility

Project Details:

Owner: Markwest Energy Partners
General Contractor: Markwest Energy Partners
Duration of Work: 4 weeks
Subsurface Conditions: 20-50 ft of mine spoil, underlain by alluvial deposits, dense residual soils and shale bedrock.
Approximate Key Quantities: 496 Controlled Modulus Column (CMC)® Rigid inclusions

Project Overview:

A rail facility containing two fire-protection tanks, 27 liquefied natural gas storage tanks and a pipe bridge crossing an existing rail line was proposed for a mid-stream gas processing facility, located 30 miles outside of Pittsburgh.

Given the considerable storage capacity and weight of the tanks, and considering the variable nature and compressibility of the soils, excessive settlement was predicted unless ground improvement was provided.

Ground Conditions:

The generalized soil profile revealed 20-50 ft of mine spoil, underlain by alluvial deposits, dense residual soils and shale bedrock. Controlled Modulus Column (CMC)® rigid inclusions were proposed to mitigate the settlement and provide suitable bearing under the proposed structures.

Solution:

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