Drilled Piers and Caissons II
Drilled piers or caissons, also called drilled shafts or bored piles, have long been a very cost effective foundation solution for many soil profile and load situations. A distinct advantage...
Picture Index for Field Verification of Crop Coefficients
A picture index has been developed for eight irrigation crops to obtain reliable, rapid, and low-cost field determinations of crop growth stages and corresponding crop coefficient (Kc)...
Formation of a Caribbean Coastal Management Unit
Rational management of Caribbean coastal areas is hindered by the poor state of knowledge of coastal ecosystems and by shortage of manpower with expertise in coastal management. To address...
Histological Markers of Environmental Effect
This paper evaluates the potential use of histopathology in determining the health of wild fish relative to the quality of the water in which the fish are residents. This paper examines...
Guidelines for Beach Nourishment: A Necessity for Project Management
This paper outlines detailed studies that have been performed on recently completed projects to assess the fill sediment redistribution and profile response. This compilation of data has...
Experimental Study on Sandbag Stability and Runup
Sandbag model tests are performed in a wave flume to examine the effects of berm-type slopes on the stability of sandbags and wave runup as compared to uniform slopes. Measurements of...
Experimental Studies of Coastal Process and Improvement Works on Xiaodinggang Coast
The field observation and investigation in recent years show that the coast erosion in the area is mainly caused by rapid reduction of sediment supply. The deposit materials are uplifted...
Coastal Zone Management in Emilia-Romagna, Italy
The beaches of the seaside resorts in the Emilia-Romagna region are of great importance to the regional economy. During the last decades, certain natural and man-induced developments have...
Equilibrium Beach Profiles: Prediction of Coastal Erosion Due to Severe Storms
This paper describes a method that calculates coastal erosion due to severe storms. The equilibrium beach profile concept used in this study was developed by Swart. The agreement between...
Anadromous Fish Impacts at Proposed Hydroelectric Plants
This paper describes a series of field techniques successfully used by the authors to determine a minimum flow downstream of hydroelectric plants. The minimum flow of water required for...
Measurement and Use of Shear Wave Velocity for Evaluating Dynamic Soil Properties
Geotechnical engineers have recognized in the past decade that shear wave velocity is a basic soil property and have begun to use it to characterize sites for many uses. Most notable has...
Hydraulic Fill Dam Made Earthquake Resistant
San Pablo Dam, near the San Andreas fault, constructed in 1919-21 by hydraulic fill methods, was found to be susceptible in places to liquefaction under seismic loading. The dam has been...
Effects of Vehicles on Buried, High-Pressure Pipe
The mechanical effects of selected types of traffic on buried, high-pressure steel pipe are examined. Particularly considered is a section of the Colorado Interstate Gas (CIG) pipeline...
Clay Pipe Installation?Advances in Load Factors
This report presents an evaluation of traditional load factor values for clay pipe and the development of a new bedding system which gives a higher load factor. Tests demonstrate that...
Stress-Intensification Factor and Flexibility Factor in Seismic Analysis of Continuous Buried Pipelines
The topics of intensified stresses and increased flexibility in pipe bends subjected to bending loads are discussed in this paper. Also discussed are dynamic strain compatibility between...
Bending Moment of Underground Flexible Pipes in a Centrifuge
The effect of several factors on bending moment of an underground flexible pipe section buried in a ditch with sheet piling was investigated experimentally by means of centrifugal model...
Field Burial Tests of Corrugated Double Wall PVC Pipe
A new lightweight PVC pipe, consisting of a smooth inner wall and a corrugated outer wall, has been introduced in the U. S. sanitary sewer market in 4 through 10 in. diameters. Field burial...
Long Term Deflection of Buried Plastic Sewer Pipes
During the 70's and the early 80's a research program has been carried out in Sweden regarding the long term behaviour of buried plastic pipes. The program has...
Determining the In-Place Density of Soils Using the Sleeve Method
The sleeve method of determining the in-place density was developed by Bureau of Reclamation field personnel for cohesionless, fine, gravel soils used for pipe bedding when other methods...
Buried Fiberglass Pipe Response to Field Installation Methods
In 1970 near Yuma, Arizona, a field test installation of 30 inch diameter fiberglass pipe was constructed. Twelve years later the pipeline was remeasured. Measurements of pipe profile,...
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