Predicting Effects of Subsidence on Landfill Caps
Groundwater protection at unlined, closed landfills relies upon limiting cover or cap infiltration. Depressions on closed landfills indicate infiltration from reduced runoff and loss of...
A Knowledge Based System with Uncertainty for the Soil
In this paper, we present the methodology that we used to develop the KBSOL Knowledge Based System for the soil. We describe the structure that contains the objects of the domain (layer,...
Stochastic Critical Excitations
Conventional methods of seismic analysis of structures frequently use the response spectrum or time history analysis techniques. The excitations for the time history analysis can be either...
Seismic Response Variability of Soil Sites
The seismic response variability of soil sites due to randomness associated with both the input base motion and spatial inhomogeneity of the shear modulus is investigated. Some numerical...
Soil/Structure Seismic Investigation of Safety-Related Structures
This paper promotes an improved understanding of the type of earthquake motions felt at V.C. Summery, Perry and Krsko nuclear power plants. An analytical investigation is performed to...
Differential Motions in Sedimentary Valleys
The differential motions (strains), induced in sediment-filled valleys due to incident seismic waves, are investigated. The response of a two-dimensional model of an asymmetric wedge-shaped...
Exact Nonstationary Response of a Sliding Rigid Structure to a Modulated White Noise Base Excitation
The seismic design of embankment dams, earth retaining walls and base isolation systems have emphasized the dynamic analysis of a rigid block sliding on a moving base. In an early study...
Fatigue Strength of Welded Joints Under Broadband Loadings
Twelve welded high strength steel cruciform specimens were tested under stochastic loadings to determine the influence on fatigue life of the bandwidth of the loading process. Constant...
Experimental Validation of a Probabilistic Fracture Mechanics Model
A method is developed for validating a probabilistic fracture analysis code (PROFRANC). The method is based on classical statistical techniques and experimental data. It is shown that...
Probabilistic Particle-Related Constitutive Model for Clayey Material
Particle-related (microscopic) soil modeling has attracted attention of research community in recent years, because of complication and shortcoming associated with inelastic macroscopic...
Risk Based Optimal Fatigue Testing
Optimal fatigue life testing of materials is considered. Based on minimization of the total expected costs of a mechanical component a strategy is suggested to determine the optimal stress...
On the Fatigue Loading for Local Components
Fatigue provisions in the North American Codes for design of highway bridges may not be applicable to the design of local components which are subjected to high axle overloads and dynamic...
Engineering of Controlled-Drainage Systems
Soil-water management by water table control (via a dual purpose subdrainage-subirrigation system) is becoming popular in humid regions of the U.S. and Canada. Controlled-drainage is an...
Stochastic Analysis of Seasonal Hydraulic Conductivity
Infiltration data collected by a ring infiltrometer tests, for summer, fall, and spring seasons, were used to determine hydraulic conductivity using Philip's two-term infiltration equation....
Stabilizing Drop Structure by Drainage Modifications
East Drain Terminal Drop Structure is located in East Drain, an open toe drain of Palmetto Bend Dam, in the tide water area of south Texas. The drop structure was threatened by piping...
Agricultural Drains and Safety of Dams
Bonny Dam is located in east central Colorado on the South Fork Republican River. The dam's foundation is in the relatively porous Ogallala formation. Throughout the history of the dam,...
Wellfield Protection Program in Broward County, Florida
The Potable Water Wellfield Protection Program was initiated early in 1981. It examined land uses in the County, made an inventory of potential ground water pollution sources, compiled...
Principles of Ground-Water Protection
Successful wellhead protection activities depend on a thorough knowledge of the ground-water flow system and an understanding of how contaminants migrate through geologic formations. Once...
ETBC: Interactive Software for Blaney-Criddle Estimates of Evapotranspiration
ETBC is a menu-driven computer program which calculates monthly evapotranspiration (ET) using the USDA Soil Conservation Service version of the Blaney-Criddle formula, as described in...
Economical and Statistical Based On-Farm Irrigation Scheduling
Most irrigation scheduling techniques are not based upon the statistics of the irrigations or economics of irrigated crop production. Traditional irrigation scheduling is based upon average...
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