Author: R. H. HEWITT | Size: 1.44 MB | Format:PDF | Quality:Scanner | Publisher: Transportation Science. Vol. 17, No. 1 | Year: 1983 February | pages: 87-109
A method is derived which estimates the probability distribution of the critical gaps of those drivers entering a main road at a priority junction who have rejected the initial lag offered to them, using observations of the sizes of the gaps refused and that eventually accepted by the driver. An extension of the method estimates the probability distribution of the critical times of
all drivers, on the assumption that each driver's critical lag and critical gap are equal, from observations of the sizes of the initial lags accepted and rejected by the driver, and the sizes of subsequent gaps considered if the initial lag is rejected. Both methods have been tested using data obtained by computer simulation. Estimates of the mean and standard deviation obtained using each method are substantially unbiased and have a fairly small standard error. Estimates of the critical gap and critical time distributions obtained using the methods are subject
to considerable errors in individual cells of the distribution, however, unless the data set used is very large. An approximate method is also suggested whereby the original probability distribution of the critical gap of all drivers, including those who accept the initial lag, can be estimated from the same data by assuming a simple form for any difference between the distributions of critical lags and critical gaps.
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Analysis of Stone Column Reinforced Foundation using Finite Element Method
Author: KHINE KHINE OO | Size: 1.89 MB | Format:PDF | Quality:Original preprint | Publisher: NATIONAL UNIVERSITY OF SINGAPORE | Year: 2004 | pages: 150
Introduction
This study performed the finite element analysis of the stone column reinforced foundation and the matching scheme for conversion of axisymmetric stone column unit cell into equivalent plane strain. Based on simplified analytical method presented by Han & Ye (2001), FEM analysis was carried out and to verify the simplified solutions. Good agreements were found in the comparisons.
In order to carry out finite element analysis for stone column treated foundation in two-dimensional condition, the plane strain model must be idealized. The conversion of axisymmetric stone column unit cell model into equivalent plane strain model is presented in this study. The parameter matching scheme consisting the stiffness and permeability matching procedures is reported. The stiffness matching is based on composite stiffness and area replacement ratio while permeability matching is based on equality of rate of consolidation.
The finite element analyses showed that the proposed matching scheme for conversion of axisymmetric stone column model into plane strain model gives good agreement with field performance of stone column works. In addition, the FEM analysis also verified that faster dissipation of excess pore water pressure in soil was achieved by using stone column work, thus accelerating the consolidation process.
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Posted by: conglocha - 03-23-2013, 06:41 AM - Forum: Archive
- No Replies
Hi there,
Does anyone know how to get this book?
I could not find it on the amazon or any website for bookseller.
I really appreciate your help.
Kind regards,
Loc.
COMPARIISON OF R.C.C. AND PRESTRESSED CONCRETE CIIRCULAR WATER TANKS
Author: Riyaz Sameer 1, Prof A. R. Mundhada 2, Snehal Metkar3 | Size: 0.45 MB | Format:PDF | Quality:Unspecified | Publisher: International Journal of Emerging Technology and Advanced Engineering | Year: 2012 | pages: 4 | ISBN: -
This paper presents a Comparative study of R.C.C. water tanks vis-à-vis Prestressed concrete water tanks resting over firm ground. The work includes the design and estimates for circular R.C.C. water tanks and prestressed concrete water tanks of various diameter. At times the more than one choice available for construction types leads to confusion. The best way is to select the type of construction, depending on the circumstances and type of structure. The aim of this paper is to design medium diameter R.C.C water tanks as well as pre-stress concrete water tanks variety and then compare the results. Programming in MS EXCEL is done to design the water tanks. The idea is to reach a definite conclusion regarding the superiority of the two techniques over one another. Results reveal that an RCC water tank is cheaper than prestress concrete water tank for smaller diameter but vice versa is true for larger diameter tanks.
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Could someone provide the article ,"Effect of Weld Details on the Ductility of Steel Column Baseplate Connections," Journal of Constructional Steel Research, Elsevier, 65(6), 1366-1373. (2009),Thks
If someone could give us the complete video series and the workbook of the full web based seminar?
Some videos are already released on Youtube and you can find'em in the link.
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Introduction to Fortran 90 for Scientists and Engineers
Author: Brian D Hahn | Size: 2.16 MB | Format:PDF | Quality:Unspecified | pages: 286 | ISBN: 0-340-60034-9
Introduction to Fortran 90 for Scientists and Engineers
An easy to use online version of "Fortran 90 for Scientists and Engineers," by Brian Hahn, is provided with Fortran PowerStation 4.0 for your use. If you find this book helpful, and would like a paper copy, an order form has been provided. You can either print the order form and mail it to the address provided, phone in your order, or use email to order the book.
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The Segmental Retaining Wall (SRW) industry has evolved significantly over the last three decades, which is a given
considering the industry did not exist 30 years ago. The SRW design evolution has been most dramatic relative to the incorporation of loads from seismic events. These changes were not precipitated as a result of poor performance. On the contrary,
design professionals saw exceptional performance on soil reinforced segmental retaining walls and reinforced slopes
when they were exposed to seismic loading.
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I would be grateful if someone could upload this standard:
ISO 16204 Durability -- Service life design of concrete structures
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