# Fracture Analysis of Cracking in Concrete Beams

*An energy balance criterion, based on fracture mechanics concepts, is proposed for predicting the loads at which concrete members develop rapidly propagating cracks. After an initial period...*

Statistical Combination of Extreme Loads

*As most loads on buildings and structures are stochastic in nature, an analytical method for studying load combination is presented in which the loads are treated as random processes....*

Time-Dependent Behavior of Undisturbed Clay

*Time dependence of undrained stress-strain and strength behavior of a natural sensitive marine clay has been investigated with particular reference to the effects of strain rate, strain...*

Speed of Inertial Bed Load Disturbances

*The flow of water on a movable bed is studied by the method of characteristics. The equations of motion and continuity for water and bed load are considered separately. A relation between...*

Projections of Phosphorus Levels in White Lake

*A preliminary mathematical model of phosphorus was used to evaluate different lake rehabilitation schemes for improvement of water quality in White Lake, Michigan. Model calculations indicate...*

Nonuniform Flow in Aggrading Channels

*The problem of resistance to flow and sediment transport rate under nonuniform flow conditions obtained in aggrading channels has been investigated experimentally. Manning's...*

Biological Energy Recovery Using Dairy Cow Waste

*Laboratory research which applied anaerobic digestion to dairy manure was concerned with optimizing gas production for potential energy recovery. The digesters were operated successfully...*

Laboratory Model Testing for Earthquake Loading

*Two types of facilities used at the University of California, Berkeley, for laboratory syudy of earthquake response characteristics of typical structures are described: (1)A 20-ft square...*

Measurements of Sediment Transport Rates using Radioactive Tracers

Weak Sediment Transport

*The bed load rate per unit width and unit time,*g

_{s}, is in newtons per meter per hour, can be expressed...Discharge Equations for HS, H, and HL Flumes

*Generalized discharge equations for HS and H flumes were developed from the original data. Discharge equations for the HL flume were developed from a published rating table for a 4-ft...*

Models for Evaluation of Hazardous Wastes

*The problems encountered in the development of models for the quantification of the degree of hazard to the environment of waste streams are examined. With the aid of a numerical example,...*

Strain Rate Behavior of Compacted Silt

*Strain controlled triaxial tests of the consolidated-drained type on compacted samples of a clayey silt show that the deviator stress at failure increases with increasing rate of axial...*

Contribution to Selection of Railroad Ballast

*Laboratory classification of 10 railroad ballasts used in a CNR field test is given. The 10 ballasts are rated for their field performance from the CNR test report. Each ballast is rated...*

Multiple Criteria Theory and Airport Site Evaluation

*This paper presents the application of multiple criteria decision theory to the selection of a new airport site. Utility values for various criteria are developed using ranking and rating...*

Endochronic Theory of Inelasticity and Failure of Concrete

*A gradual accumulation of inelastic strain can be most conveniently described in terms of the so-called intrinsic time, whose increment depends on the time increment as well as the strain...*

Evaluation of Circulation in Estuaries

*Several approaches describing density-induced circulation patterns in partially stratified estuaries have been developed. Published techniques developed by several investigators and recently...*

Some Remarks on Computer Modeling of Coastal Flows

*Limitations on ability of numerical models to model flow and dispersion of pollutants in coastal areas due to fundamental limitations in knowledge of exchange coefficients are covered....*

Rating and Reliability of Railway Bridges

The Bed-Load Function

*A simple derivation of the bed-load function has been presented. It was shown that the jump length of detached particles need not be assumed constant, and by treating it as a random variable,...*

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