History of the USDA-ARS Experimental Watersheds on the Washita River, Oklahoma
A national experimental watershed network, operated by the Agricultural Research Service of the US Department of Agriculture, was established in 1959 to conduct research on the effects...
Introduction
Permafrost is defined as soil that remains frozen for more than two years. At elevations less than 304.8 m (1000 ft.), it is frequently encountered north of latitude 60. It may also be...
The Need for Geotechnical Investigation
Knowledge of the subsurface conditions is needed to decide which type of foundation to use. In the discontinuous permafrost zone, some generalizations may be made about the location of...
Structurally Enhanced Foundations: A Functional Solution to Thaw Strain in Frozen Sand and Gravel
Some building sites with perennially frozen soil profiles are developed using nonelevated, conventional-appearing foundation systems. These sites consist of frozen sands and gravels and...
Post and Pad
As the name implies, this type of foundation consists of a concrete or wood pad placed on or buried in the ground. It is the lowest priced option for buildings on frozen silt, which may...
Adjustable Foundation Design Development Innovations in Arctic Engineering
The purpose of adjustable foundation systems is to accommodate a wide variety of soils, including those which have low bearing capacity or which may be subject to settlement and/or horizontal...
Some Case Histories of Pile Foundations in Permafrost
Foundations for permafrost conditions should conform to one of three basic design principles: keep it frozen, let it thaw, or thaw the ground before construction. To keep the permafrost...
Refrigerated Foundations
Refrigeration systems used to cool foundations on frozen ground can be classified as either active or passive, depending on whether external energy is used to power the systems. If pumps,...
Direct Causes of the Catastrophe
This chapter examines direct physical causes of the hurricane protection system failures, including soil strength assessments and pumping station limitations....
Offshore Technology in Civil Engineering
Hall of Fame Papers from the Early Years
Prepared by the Subcommittee on Offshore Technology Conference Support of the Coasts, Oceans, Ports, and Rivers Institute of ASCE. This series presents...
Structures Congress 2006
Structural Engineering and Public Safety
Geo-Frontiers 2005
These Proceedings showcase recent advancements in all facets of the geo-industry. Geo-Frontiers was conceived to present the frontier of civil, geotechnical, and geoenvironmental engineering....
Evaluation of the VERSA-LOK / Miragrid Reinforced Soil Wall System
Final Report
Prepared by the Highway Innovative Technology Evaluaton Center (HITEC), a service center of Civil Engineering Research Foundation. This evaluation...
Analysis of Dynamic Laterally Loaded Pile in Clay
Deflections of laterally loaded pile groups are strongly affected by the degree of pile head fixity. If the cap provides perfect restraint against rotation, deflections are only about...
Making the Grade
Adding two lanes to a stretch of highway in western Colorado required excavation on slopes and involved micropiles, mechanically stabilized earth walls, ground anchors, and soil nails....
A Tale of Two Towers: The Foundations
In preparing two lots in New York City's Times Square as sites for modern skyscrapers, engineers devised foundations and structural systems that would allow for subway lines,...
Evaluation of Anchor Wall Systems' Landmark Reinforced Soil Wall System
With T.C. Mirafi's Miragrid & Miratex Geogrid Reinforcement ?Final Report
This report describes a HITEC evaluation designed to determine the basic capability and limitations of the Landmark/Mirafi System for use as a technically viable precast MSE retaining...
Introduction
Historically, animal waste was considered a valuable fertilizer and thus land was applied for sustainable on-farm production of crops and animals. However, with the shift to large production...
Seepage and Transport through Anaerobic Lagoon Liners
In this chapter, the seepage and transport characteristics of lagoon liners are addressed using the soils and hydrogeology of southwest Kansas as examples....
Constructing on the Inconstructible
Exhaustive and sophisticated analyses of extremely weak foundation soils coupled with an innovative approach to quay wall design help bring the new shipping terminal under construction...
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