Construction Productivity Advancement Research (CPAR) Program

Early methods of installing pipelines and utilities across rivers and streams involved excavation of trenches. After the placement of the pipeline, the trenches were backfilled to protect the pipeline from hazards. These early dredged crossings were generally sited at the channel crossing of the tha...

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Bibliographic Details
Main Authors: Staheli, Kimberlie, Bennett, David, O'Donnell, Hugh W, Hurley, Timothy J
Format: Report
Language:English
Subjects:
ATLANTIC OCEAN
CHANNELS
COASTAL REGIONS
CONSTRUCTION
CROSSINGS
DREDGING
DRILLING
EARTH(PLANET)
ECONOMICS
EMPLACEMENT
EXCAVATION
FAILURE
FLOOD CONTROL
HAZARDS
HYDRAULICS
LEVEES
LIMITATIONS
Logistics, Military Facilities and Supplies
Mining Engineering
MISSISSIPPI RIVER
NETWORKS
PIPELINES
POPULATION
PRODUCTIVITY
RIVERS
SLIDING
STABILITY
TRANSMITTANCE
TRENCHES
WETLANDS
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Summary:Early methods of installing pipelines and utilities across rivers and streams involved excavation of trenches. After the placement of the pipeline, the trenches were backfilled to protect the pipeline from hazards. These early dredged crossings were generally sited at the channel crossing of the thalweg between bends of the river. Here the river is generally a wide, shallow rectangle. This location is chosen due to its hydraulic stability and the economic limitation of the dredging equipment. In and across the U.S. Army Engineer District (USAED) Lower Mississippi Valley, lies the heart of the pipeline transmission network of the United States. Hundreds of individual pipelines traverse from Texas and out of the Gulf of Mexico across the numerous rivers, bayous, and wetlands of Louisiana to service the northeast population centers on the Atlantic coast. Along the leveed banks of the lower Mississippi River, pipeline crossings exist between nearly every bendway. The crossing of these earthen flood control structures presents a difficult and expensive construction problem due to concerns about the integrity of the levee against a sliding failure. Prepared in collaboration with O'Donnell Associates, Inc., Sugarland, TX.