Prediction of Settlements of Footings on Sands: Accuracy and Reliability
Serviceability limit states are controlled by the deformations that a specific structure can undergo. This aspect involves a correct design of foundations to ensure that the supported...
Settlement of Large Mat on Deep Compressible Soil
This case history describes the settlement analyses for a large load compensated (floating) mat foundation on a deep deposit of normally consolidated clay of variable thickness. Large...
Design of Underpinning Piles to Reduce Settlements
Piles are frequently used to underpin structures which have suffered, or are expected to suffer, damage due to excessive settlement or differential settlement. However, existing methods...
Nonlinear Three Dimensional Analysis of Downdrag on Pile Groups
The downdrag on pile groups was investigated by using a numerical analysis and an analytical study. The emphasis was on quantifying the reduction of downdrag on piles in a group due to...
Load-Settlement Prediction of Footings on Steep Slopes
The use of spread footings on slopes is a common practice in the design of bridge foundations. Footings are generally constructed in the slope or at its crest to minimize the bridge length,...
Probabilistic Observation Method for Settlement-Based Design of a Landfill Cover
Uncertainties in subsurface conditions make predicting total and differential settlement a difficult task. The Observation Method, which is commonly implemented to acquire additional knowledge...
Tolerable Deformations
Current criteria for tolerable movements of buildings, bridges and other structures are reviewed. Tolerable values of total and differential settlement, relative rotation, relative deflection...
Settlement Analysis for 450 Meter Tall KLCC Towers
The site evaluation and settlement analysis performed for the two tallest buildings in the world currently under construction, are described. The site evaluation resulted in shifting building...
Effect of Roughness and Thickness of Biofilms on External Mass Transfer Resistance
The effect of roughness and thickness of biofilms on the dissolved oxygen (DO) concentration boundary layer thickness (DO CBLT) and the external mass transfer process in a biofilm system...
Demonstration Project for Scour Instrumentation
A Federal Highway Administration (FHWA) Demonstration Project was developed to facilitate technology transfer of instrumentation related research to the highway industry. The objective...
Hydrodynamic Forces in Hydraulic Jump Stilling Basins
The knowledge of hydrodynamic forces acting on hydraulic jump stilling basin slabs has been a research topic for the past four decades. Published methodologies for computing the hydrodynamic...
Sensitivity Analysis of Bridge Equations
Computation of riverbed scour at the 482,000-plus bridges over water in the United States of America requires a significant level of hydraulic engineering effort. To do cost-effective,...
Damage to Highway Infrastructure 1993 Mississippi River Basin Flooding
A study has been initiated to investigate the basin-wide impact of the 1993 Mississippi River Basin flooding on damage to the highway infrastructure. The study involves site investigations...
Contraction Scour at a Bridge over the Iowa River
Flooding of the Iowa River during July and August 1993 caused extensive contraction scour at the State Highway 99 bridge over the Iowa River at Wapello, Iowa. At least 3.3 m of piling...
Bridge Scour Instrumentation
This paper presents a brief status report of research funded by the National Cooperative Highway Research Program (NCHRP Project 21-3, Instrumentation for Measuring Scour at Bridge Piers...
Brief Summary of National Bridge Scour Data Base
This paper briefly summarizes more than 470 measurements of local channel scour at bridge piers from 58 sites in 14 States. Relations between local scour and selected deterministic parameters...
Ultimate Depth of Scour Around Bridge Piers
A design equation for estimating ultimate depth of local scour at bridge piers has been proposed which is based upon the envelope curves drawn to published field data covering a wide range...
Bridge Pier Scour Equations - An Assessment
A comparative assessment of various bridge pier scour equations has been reported on the basis of analyzing a set of published prototype data from Indian rivers and other countries covering...
Probable Maximum Flood Estimation for New and Existing Dams
Although various attempts have been made to streamline the procedures to determine PMF hydrographs for the design of new and rehabilitation of existing dams, there still remains a great...
HEC River Analysis System (HEC-RAS)
The Hydrologic Engineering Center (HEC) is developing next generation software for one-dimensional river hydraulics. The HEC-RAS River Analysis System (HEC, 1994) is intended to be the...
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