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Displaying 51 - 75 of 218

Wind Load Factors for Tall Building Design and the ASCE 7 Standard

February 19, 2017
Author(s)
Rene D. Gabbai, Emil Simiu
Wind load factors incorporated in the ASCE 7 Standard are based on rough approximations of wind effects and the uncertainties inherent in them. These factors are routinely applied to tall building design, even though the original calculations on which they

Wind Speeds for the Estimation of World Trade Center Towers' Response

February 19, 2017
Author(s)
William P. Fritz, Fahim H. Sadek, Emil Simiu
Estimates of the World Trade Center (WTC) towers response to wind by two North American wind engineering laboratories differed from each other by almost 40 %. A recent investigation by the National Institute of Standards and Technology determined that

PLANETARY BOUNDARY LAYER MODELING AND TALL BUILDING DESIGN

January 1, 2016
Author(s)
Emil Simiu, Liang Shi, DongHun Yeo
Recent research into Planetary Boundary Layer (PBL) flows accounts for the difference between �neutral� and �conventionally neutral� flows. Of interest in structural engineering are �conventionally neutral� PBL flows, that is, flows affected by transport

Maps of Non-hurricane Non-tornadic Wind Speeds With Specified Mean Recurrence Intervals for the Contiguous United States Using a Two-Dimensional Poisson Process Extreme Value Model and Local Regression

November 12, 2015
Author(s)
Adam L. Pintar, Emil Simiu, Franklin T. Lombardo, Marc L. Levitan
This report describes a procedure for creating maps of non-hurricane, non-tornadic wind speeds for a set of recurrence intervals of interest between \num{10} and \num{100000} years over the contiguous United States. The procedure is carried out in two

Discussion of Review of Methods to Assess, Design for, and Mitigate Multiple Hazards by Yue Li, Aakash Ahuja, and Jamie E. Padgett (J. Performance of Constructed Facilities, 26 104-117)

March 1, 2013
Author(s)
Dat Duthinh, Long T. Phan, Emil Simiu
The authors have performed a useful service by providing a broad perspective on multi-hazard engineering. The discussers would like to complement that perspective by noting two results of practical significance in the context of design for multiple hazards

An Assessment of Methods for Determining Wind Loads

January 1, 2013
Author(s)
Emil Simiu, Chris Letchford, Nicholas Isyumov, Arindam Chowdhury, DongHun Yeo
The purpose of this work is to present an assessment of methods for determining wind loads on buildings and other structures that warrant comment, correction or improvement. The assessment is intended to serve as a resource as a new version of the American

Meteorological extremes

December 28, 2012
Author(s)
Franklin T. Lombardo, Adam L. Pintar, Antonio Possolo, Emil Simiu, DongHun Yeo
This entry reviews basic principles of the statistical analysis of large extreme values (EVs), the role of simulations for the development of relevant meteorological data sets, the interaction between the extreme value modeling process and its application

NIST ADVANCES IN COMPUTER-AIDED AND COMPUTATIONAL METHODS IN WIND ENGINEERING

October 19, 2012
Author(s)
Dong Hun Yeo, Franklin T. Lombardo, Dilip K. Banerjee, Eric J. Letvin, Emil Simiu, Marc L. Levitan, Florian A. Potra
The paper summarizes recent research and development of computer-aided and computational methods in wind engineering at the National Institute of Standards and Technology (NIST). Specific topics to be covered include: 1. Time-domain database-assisted