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In recent years, there has been a rapid growth of LADAR (laser detection and ranging) applications and a growing number of LADARs that are commercially available. As a result, there is a corresponding need to evaluate these instruments. This need provided
Standard data formats are generally employed because they save time and money by promoting interoperability, i.e., facilitating data exchange and preserving information for re-use, and are available for a wide variety of business, scientific, and
In 1998, Persily published a review of commercial and institutional building airtightness data that found significant levels of air leakage and debunked the myth of the airtight commercial building. This paper updates the earlier analysis for the U.S. by
William C. Thomas, Christopher C. White, Mark R. VanLandingham
Baseline models are developed for predicting moisture concentration and temperature in extremely thin polymeric films bonded to impermeable substrate materials. These simplified models are based on analytical rather than numerical solutions to circumvent
Anthony P. Hamins, Erik L. Johnsson, Michelle K. Donnelly
The experiments described here were part of an international collaborative project to assess and validate fire computer codes for nuclear power plant applications. Understanding the distribution of energy released by a fire is important for testing the
Anthony P. Hamins, Kevin B. McGrattan, Kuldeep R. Prasad, Alexander Maranghides, Therese P. McAllister
A large-scale fire experiment was conducted to assess the accuracy of a combination of gas and solid-phase models designed to predict the temperatures of structural steel elements exposed to a fire. The experiment involved a 2 MW heptane spray fire in a
The purpose of this lecture is to assess the current state of our ability to simulate the consequences of a fire in a large building, and suggest some areas where improvement is needed. Attention is focused on the coupling of fire dynamics simulations and
This report provides experimental and computer modeling results for Portland Cement Proficiency Samples 151 and 152 issued by the Cement and Concrete Reference Laboratory at NIST in January of 2004. The purposes of this report are to characterize these
Sealant is one of the very few major consumer products valued primarily for its rheological and adhesive properties. While, these materials may appear to be simple elastic solids, upon further examination, their behavior can be extremely complex. In this
Simo A. Hostikka, Kevin B. McGrattan, Anthony Hamins
The thermal environment in turbulent flames is studied by large eddy simulation and finite volume method for radiation transport. The spectral dependence of the local absorption coefficient is solved using a simple wide band model. The predicted heat
A procedure is described for the design of rigid buildings for wind loading. The procedure, based on the database-assisted design (DAD) approach, uses measured pressure time series in conjunction with influence coefficients obtained by linear, static
A procedure is presented that makes use of measured pressures to predict peak static responses of low buildings, for cases in which no wind tunnel model is available with dimensions matching those of the structure of interest. The proposed approach
Cynthia H. Reed, Steven J. Nabinger, Steven Emmerich
As part of an ongoing effort to better understand the performance of indoor air cleaners in real buildings, the National Institute of Standards and Technology (NIST) has completed a series of air cleaner field tests and model simulations. This paper
D D. Evans, Erica D. Kuligowski, William S. Dols, William L. Grosshandler
The National Institute of Standards and Technology investigation of active fire protection systems in World Trade Center (WTC) 1, 2, and 7 included the design, installation, capabilities, and performance on September 11,2001, of the automatic fire
This report was prepared to support the analysis of building and fire codes and practices of the National Institute of Standards and Technology (NIST) World Trade Center (WTC) Investigation. This report suppons the objective of documenting the requirements
Steven W. Kirkpatrick, Robert T. Bocchieri, Fahim Sadek, R A. MacNeill, S Holmes, B D. Peterson, R W. Cilke, C Navarro
The objective of this report was to analyze the aircraft impacts into each of the World Trade Center (WTC) towers to provide the following: (1) estimates of probable damage to structural systems due to aircraft impact, including exterior walls, floor
Steven W. Kirkpatrick, Robert T. Bocchieri, Fahim Sadek, R A. MacNeill, S Holmes, B D. Peterson, R W. Cilke, C Navarro
The objective of this report was to analyze the aircraft impacts into each of the World Trade Center (WTC) towers to provide the following: (1) estimates of probable damage to structural systems due to aircraft impact, including exterior walls, floor
Steven W. Kirkpatrick, Robert T. Bocchieri, Fahim Sadek, R A. MacNeill, S Holmes, B D. Peterson, R W. Cilke, C Navarro
The objective of this report was to analyze the aircraft impacts into each of the World Trade Center (WTC) towers to provide the following: (1) estimates of probable damage to structural systems due to aircraft impact, including exterior walls, floor
Published stories of the survivor's of the World Trade Center (WTC) attacks were collected to document the event and as background material to guide the development of the National Institute of Standards and Technology (NIST) Investigation on occupant
Daniel M. Madrzykowski, Stephen Kerber, Nelson P. Bryner, William L. Grosshandler
Computer simulation has been demonstrated to be credible, when properly applied, as a tool to help fill in critical details of a fire incident and to demonstrate the value of alternative building designs and fire safety measures. This poster presents the