Townsite Lateral-Stage 2 Belle Fourche Unit - Cheyenne Division Concrete: Pipe with Dumped Bedding and Embedment
In 1933, M. G. Spangler presented three bedding configurations and the concept of a bedding factor to relate the supporting strength of buried concrete pipe to the strength obtained in...
Analysis of Pavement-Pipeline Systems After Cut Restoration
The placement of utility pipes normally necessitates many cuts and fills of the existing pavements. Integrity of pipeline and compatible performance of cut restoration and original pavement...
The Load Factor
Spangler's load-factor formula for projecting conduits is generalized to all cases of buried rigid pipe, whether in trenches or under embankments; this is in accordance with the analytical...
Standard Installations: A Synopsis of the ASCE Standard Practice for Direct Design of Buried Precast Concrete Pipe
In 1970, the American Concrete Pipe Association (ACPA) began a long range research program which focused on the behavior of buried concrete pipe. The research resulted in the comprehensive...
Liquefaction Analysis in a GIS Environment
Liquefaction has been identified as one of the seismic hazards that brings great damage to property and infrastructure, and loss of life. The need for liquefaction analysis that works...
Liquefaction Potential of Western Puerto Rico
The historical seismic record, paleoseismic evidence, high population density, time expired since the last major earthquake, and the presence of liquefiable sands and soft clays combine...
Development of Geographical Information System (GIS) for Seismic Hazard Study of Charleston, SC
One of the most prominent areas of seismicity in the eastern U.S. is near Charleston, SC. The 1886 Charleston earthquake (M=7,5) and liquefaction evidence from at least five prehistoric...
A Prospect for Liquefaction Hazard Evaluation Using GIS
A brief description of a recently developed methodology to evaluate liquefaction hazard at a site is presented. In this method, uncertainty and scatter in the data are considered rigorously....
Image Analysis of Clay Microstructure
The paper summarises new methods which have been developed to analyse oriented textures in electron micrographs of clay soils, complementary methods using polarising microscopy, and an...
A Chemical Image Analysis Procedure as a Method for a Quantitative Modal Analysis of Clinker Minerals
In a chemical image analysis procedure, the specimen is analyzed in a scanning electron microscope in backscatter mode, thus providing an atomic number contrast. The phases are segmented...
Radiographic Visualization in Experimental Soil Mechanics
A summary of the principles of such methods is presented, i.e. stereophotogrammetry, infrared thermography and radiography and their respective ranges of applicability are discussed. Then,...
A Revised Methodology to Minimize Bias in Determining the Porosity and Void Tensor of Particulate Media
Increased recognition of the importance of fabric in the observed response of particulate media under monotonic and cyclic loading has led to the development of new procedures to quantify...
Digital Image Techniques for Volume Change Measurements in Triaxial Tests
This paper presents an innovative technique that has been used for measuring the volumetric deformation that cylindrical specimens experience during the shearing stages of a triaxial test....
Image Analysis for Interparticle Contact Modeling
Two dimensional photoelastic elements (disks or ellipses) are used as models for studying granular material behavior. The required observations include accurate continuous measurements...
Displacements in the Soil Near a Tunnel Face Using Centrifuge Tests and Image Processing
Image processing is applied to measurements of the soil for a tunnel model in centrifuge. For this aim a specifical device has been developed on the LCPC centrifuge (Nantes, France) and...
Image Analysis Applied to Geotechnical Engineering
Application of scanning electron microscope and image analyzer to the quantification of grain morphology and microfabric of aged sands is briefly reviewed. Relationships of morphology...
Finite Element Analysis of Slabs-on-Grade Using Higher Order Subgrade Soil Models
Incorporation of the two-parameter, Kerr and Zhemochkin-Sinitsyn-Shtaerman subgrade models into finite element code ILLI-SLAB is described. The two conventional idealizations, namely the...
ICAO's ACN-PCN Method and Aircraft-Pavement Interaction
Multi-wheel gear assemblies of future aircraft are not compatible with pavements rated in the ACN-PCN system given by the International Civil Aviation Organization (ICAO). The Aircraft...
Airfield Pavement Structural Evaluations, Current Practice and Future Needs
The United States Air Force's pavement evaluation teams have to be able to go quickly anywhere in the world to evaluate an airfield pavement's structural capability. A combination of non-destructive...
Pipeline Infrastructure II
This proceedings,
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