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GEOTECH AND HYDRAULICS TEAM

Newsletters and Publications

Technology Development Reports on Geotechnical issues by Central Federal Lands:

Technology Development Reports on Hydraulics issues by Central Federal Lands:

Fish Passage Database Issued by Western Federal Lands:


HYDRAULIC DESIGN SERIES:

HDS 2: Highway Hydrology HTML
HDS 2: Highway Hydrology DOC

HDS 4: Introduction to Highway Hydraulics HTML
HDS 4: Introduction to Highway Hydraulics DOC

HDS 5: Hydraulic Design of Highway Culverts HTML
HDS 5: Hydraulic Design of Highway Culverts DOC

HDS 6: River Engineering for Highway Encroachments HTML
HDS 6: River Engineering for Highway Encroachments DOC

HYDRAULIC ENGINEERING CIRCULARS:

HEC 9: Debris Control Structures--Evaluation and Countermeasures HTML
HEC 9: Debris Control Structures--Evaluation and Countermeasures DOC

HEC 11: Design of RipRap Revetment SI HTML
HEC 11: Design of RipRap Revetment SI DOC

HEC 14: Hydraulic Design of Energy Dissipaters for Culverts and Channels HTML
HEC 14: Hydraulic Design of Energy Dissipaters for Culverts and Channels DOC

HEC 15: Design of Roadside Channels with Flexible Linings HTML
HEC 15: Design of Roadside Channels with Flexible Linings DOC

HEC 18: Evaluating Scour and Bridges HTML
HEC 18: Evaluating Scour and Bridges DOC

HEC 20: Stream Stability at Highway Structures HTML
HEC 20: Stream Stability at Highway Structures DOC

HEC 21: Design of Bridge Deck Drainage HTML
HEC 21: Design of Bridge Deck Drainage DOC

HEC 22: Urban Drainage Design Manual HTML
HEC 22: Urban Drainage Design Manual DOC

HEC 23: Bridge Scour and Stream Instability Countermeasures HTML
HEC 23: Bridge Scour and Stream Instability Countermeasures DOC

HEC 24: Highway Stormwater Pump Station Design HTML
HEC 24: Highway Stormwater Pump Station Design DOC


HYDRAULIC ENGINEERING SOFTWARE:

HY8: CULVERT ANALYSIS, Version 6.1 HTML
HY8: CULVERT ANALYSIS, Version 6.1 DOC

Reports/Plans

Magazine Articles

Deep Foundations

Grouting Tips: An Outlook on Post-grouted Drilled Shafts

Benjamin S. Rivers, PE
Geotechnical Engineer
FHWA Resource Center

Public Roads Magazine articles placed on the following technical subjects

  • Glenwood Canyon 12 Years Later More than a decade after its construction, has this marvel of highway engineering in western Colorado attained its original goals? (March/April 2004) by Karen Stufflebeam Row, Eva LaDow, and Steve Moler
  • A Tale of Two Canyons Colorado DOT Applies lessons learned from Glenwood project to a similar highway in the Snowmass valley, near famed Aspen ski resort (March/April 2004) by Steve Moler
News Articles

FOCUS Newsletter articles placed on the following technical subjects:

Trade Publications/Press Coverage

Army of Steel Pipes Support Tough Pennsylvania Highway (2/14/05) By Jonathan Barnes
Reprinted from Engineering News-Record, copyright The McGraw-Hill Companies, Inc., Feb. 14, 2005, All rights reserved

Florida Engineering articles placed on the following technical subjects
Public Works Magazine articles placed on the following technical subjects

Army of Steel Pipes Support Tough Pennsylvania Highway (2/14/05) By Jonathan Barnes
Courtesy of ENR Magazine

Mile by mile and pin by pin, contractors are stabilizing and widening a Pennsylvania highway once studded with crosses marking the sites of traffic fatalities.

The notoriously dangerous two-lane, 7-mile stretch of Lewistown Narrows highway is now undergoing a $105-million retrofit and widening to four lanes. It is the state's most complex highway project ever, says Gary Hoffman, PennDOT deputy secretary for highway administration.

Walsh Construction, Chicago, won the four-year contract to reconstruct the length of Route 22/322 in 2004. Hemmed in on the north side by boulder-strewn slopes and on the south side by the Juniata River and the Pennsylvania Canal, crews also must allow two lanes to remain open for 20,000 vehicles a day to pass.

The road will be reconfigured so that the eastbound, riverside lanes are separated from and lower than the westbound lanes. Concrete barriers will separate the sets of lanes. "We're putting in fill at the base of the slopes that will act as a counterweight [against the slopes of the mountain], and the westbound lanes will be on that fill," Hoffman says.

Pilings drilled into the bedrock pin the roadway in place. The technique is rare in Pennsylvania and has never been used to such a great extent in the nation, says Neil Fannin, a PennDOT geotechnical engineer. "The amount of pilings we're using there is exceptional."

The 7-in.-dia steel pipe pilings range in length from 15 to 45 ft. The pilings are drilled through a top layer of soil, then through a clay layer and embedded 6 ft into the bedrock. The "micropiles" are filled with grout, which will bond the pipes to the rock. Each pipe has a 0.5-in. wall thickness and are spaced 1 to 2 ft apart for three miles, says Jonathan Raab, geotechnical engineer with Harrisburg-based GTS Technologies Inc., development and design consultant. "Without a doubt, the Narrows is the largest project with these types of stability issues that has ever been done in the state."

The Federal Highway Administration did not have a strong precedent for the design of the project, Raab notes. "This method of micro-pile stabilization has been used elsewhere, but on a much smaller scale," he says.

With the scale and the variety of soils, "the application here is unique because of the geology of the site and the difficulty of what we're trying to do," FHWA geotechnical engineer Silas Nichols says.

More information about Engineering News-Record, the international newsmagazine covering the construction industry

Press Releases

Trade Publication Index
Disclaimer: The United States Government does not endorse products or manufacturers. Trademarks or manufacturers' names appear herein only because they are considered essential to the objective of this site, to share the most pertinent information available.

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