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Displaying 76 - 100 of 218

Estimation of Hurricane Wind Speed Probablities: Application to New York City and Other Coastal Locations

October 11, 2012

Author(s)

Dong Hun Yeo, Emil Simiu, Ning Lin

This paper presents a procedure for estimating parametric probabilistic models of hurricane wind speeds from existing information on estimated wind speeds with various mean recurrence intervals (MRIs). Such models may be needed, for example, for the

Large Eddy Simulation of Wind Loads on a Low-Rise Structure and Comparison with Wind Tunnel Results

July 2, 2012

Author(s)

isam janajreh, Emil Simiu

This work presents estimates of time histories of pressure coefficients at several taps on the roof of a 1/200 model of a 200 x 100 x 20 ft low-rise building with a 1/24 slope gable roof building. The estimates were obtained by large eddy simulation (LES)

Ultimate Wind Load Design Gust Speeds in the United States for Use in ASCE-7 (Journal of Structural Engineering, Vol. 136, No. 5, May, 2010 pp. 613-625).

May 31, 2012

Author(s)

Emil Simiu, Franklin T. Lombardo, Dong Hun Yeo

An Assessment of Methods for Determining Wind Loads (NIST TN 1738)

March 1, 2012

Author(s)

Emil Simiu, Chris Letchford, Nicholas Isyumov, Arindam G. Chowdhury, Dong Hun 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 ASCE-7

Simplified Wind Flow and Aerodynamic Response of Residential Homes: Laboratory and Computational Fluid Dynamics Simulations

November 1, 2011

Author(s)

T.C. Fu, A.M. Aly, Arindam Chowdhury, Girma Bitsuamlak, DongHun Yeo, Emil Simiu

The reliable measurement of pressures on low-rise buildings in the atmospheric boundary layer (ABL) flow remains a challenge, as has been shown by the large discrepancies among results obtained in different wind tunnel facilities or even in the same wind

A Statistical Analysis of Steel Truss Temperature Data Recorded During Fire Resistance Tests

July 15, 2011

Author(s)

Dilip K. Banerjee, Emil Simiu, John L. Gross, Raghu N. Kacker

The performance of composite floor steel trusses in fires is a function of the steel temperatures within the trusses. For any given specified fire and composite system design, the temperatures depend on three randomly varying factors: (1) the thermal

Technical Basis for Regulatory Guidance on Design-Basis Hurricane-Borne Missile Speeds for Nuclear Power Plants

March 16, 2011

Author(s)

Emil Simiu, Florian A. Potra

This report provides the technical basis for a potential new regulatory guide that would provide licensees and applicants with guidance that the staff of the U.S. Nuclear Regulatory Commission (NRC) considers acceptable for use in selecting the design

A PROPOSED TECHNIQUE FOR DETERMINING AERODYNAMIC PRESSURES ON RESIDENTIAL HOMES

February 16, 2011

Author(s)

Tuan-Chun Fu, Aly Mousaad Aly, Arindam Chowdhury, Girma Bitsuamlak, DongHun Yeo, Emil Simiu

Wind loads on low-rise buildings in general and residential homes in particular can differ significantly depending upon the laboratory in which they were measured. The differences are due in large part to inadequate simulations of the low-frequency content

Database-Assisted Design for Wind: Veering Effects on High-Rise Structures

August 15, 2010

Author(s)

Dong Hun Yeo, Emil Simiu

Atmospheric boundary layer winds experience two types of effects due to friction at the ground surface. One effect is the increase of the wind speeds with height above the surface. The second effect, called the Ekman layer effect, entails veering -- the

Wind and Structural Engineering: Ensuring an Effective and Transparent Division of Responsibilities

June 30, 2010

Author(s)

Emil Simiu, Dong Hun Yeo

To help assure safe performance under loads that may occur during a structure s life, structural design practices are regulated by code provisions, and the design of the structure must be approved by a qualified public official. For the design and approval

Database-Assisted Design for Wind Effects on High-Rise Structures and Its Potential for Assessment of CFD Simulation

May 24, 2010

Author(s)

Dong Hun Yeo, Emil Simiu

Efforts are being made to perform CFD-based estimates of wind effects on tall buildings that are sufficiently reliable to allow their use in lieu of estimates based on wind tunnel measurements. For practical purposes the assessment of the quality of the

TESTING OF RESIDENTIAL HOMES UNDER WIND LOADS

April 7, 2010

Author(s)

Emil Simiu, Girma Bitsuamlak, Arindam Chowdury, Ruilong Li, Amanuel Tecle, Dong Hun Yeo

Aerodynamic testing of low-rise structures is fraught with difficulties that can be the cause of large measurement errors resulting in the underestimation of aerodynamic pressures by a factor of as much as two. The errors are due in large part to the

Toward a standard on the wind tunnel method

September 2, 2009

Author(s)

Emil Simiu

This document is intended to provide practicing engineers and building code officials with a technical resource that (i) describes current practices for the testing of buildings and other structures in flows simulating natural winds, (ii) provides a basis