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Showing results 61 - 70 of 2150782 documents for rychl pjka havov Navtivte web na WWWLOAN24HXYZ rychl pujka 1000 5000 k na uet online pjky comodor pjky spolenosti rychla pujcka online Valtice online pujcka pred vplatou Hlun pujcky online bez registru Slavkov u Brna nejlepsi pujcky do 5000 rychla pujcka online Jin pjky od soukrom osoby havlkv brod online pujcka ihned na cet Podivn sms pjka bez 1 k nonstop faktura k pujcce z fksp fajn nebankovni pujcka bez poplatku a registru
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  1. No Slide Title

    https://www.nist.gov/system/files/documents/2017/05/09/6McAllister2.pdf
    1 Technical Conference on the Federal Building and Fire Safety Investigation of the World Trade Center Disaster Session VI - Structural Fire Response and Collapse Analysis Probable Collapse Sequence and Key Findings September 15, 2005 Therese McAllister Building and Fire Research Laboratory National Institute of Standards and Technology U.S. Department of Commerce 2 Probable Collapse SequencesProbable Collapse Sequences NIST adopted an approach that combined mathematical modeling, statistical analysis, laboratory experiments, and analysis of photographs and videos, and accounted for uncertainty in input parameters, analyses, and observed events, to address: The probable sequence of events from the moment of aircraft impact until the initiation of global building collapse. How and why WTC 1 stood nearly twice as long as WTC 2 before collapsing (102 min vs ...
  2. Slide 1

    https://www.nist.gov/system/files/documents/2017/05/09/6Gumpertz.pdf
    Simpson Gumpertz & HegerSimpson Gumpertz & Heger Consulting EngineersConsulting Engineers Building Engineering Building Engineering Infrastructure and Special Structures Infrastructure and Special Structures Construction EngineeringConstruction Engineering Structural Response of Components, Subsystems, Structural Response of Components, Subsystems, and Global Models of WTC Towers and Global Models of WTC Towers to to Aircraft Impact and FireAircraft Impact and Fire Simpson Gumpertz & Heger Inc.Simpson Gumpertz & Heger Inc. Waltham, MA 02453Waltham, MA 02453 15 September 200515 September 2005 Consulting EngineersObjective and ApproachObjective and Approach •• Objective: Present the results of the finite element analyses Objective: Present the results of the finite element analyses performed for each of the WTC towers to determine their performe...
  3. Slide 1

    https://www.nist.gov/system/files/documents/2017/05/09/6McAllister.pdf
    1 Technical Conference on the Federal Building and Fire Safety Investigation of the World Trade Center Disaster Session VI - Structural Fire Response and Collapse Analysis Observations for Structural Response Structural and Fire Protection Damage Due to Aircraft Impact September 15, 2005 Therese McAllister Building and Fire Research Laboratory National Institute of Standards and Technology U.S. Department of Commerce 2 ObservationsObservations Development of probable collapse sequence for each tower was guided by evidence Photographs and videos Design and maintenance documents Eyewitness accounts Changes in structural performance are not observable until significant deformation has occurred. Observations of structural behavior from over 7000 photographs and 150 hours of video records include: Severed components Deflections and buckling (inward bowing of ext...
  4. Slide 1

    https://www.nist.gov/system/files/documents/2017/04/28/6Gross3.pdf
    1 Technical Conference on the Federal Building and Fire Safety Investigation of the World Trade Center Disaster Session VI - Structural Fire Response and Collapse Analysis Fire Protection of Structural Steel September 15, 2005 John L. Gross Building and Fire Research Laboratory National Institute of Standards and Technology U.S. Department of Commerce 2 Fire Protection of Structural SteelFire Protection of Structural Steel Thickness measurements and variability Equivalent uniform thickness Specified and “actual” thickness of fireproofing Variable thickness Equivalent Uniform thickness 0 1 2 3 4 5 6 7 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 C o u n t Ln (Thickness) (d) 3 ““Specified” Thickness of Fireproofing (SFRM)Specified” Thickness of Fireproofing (SFRM) In October 1969, … , the Port Authority stated, in a letter to the firepro...
  5. Slide 1

    https://www.nist.gov/system/files/documents/2017/05/09/6Gross2.pdf
    1 Technical Conference on the Federal Building and Fire Safety Investigation of the World Trade Center Disaster Session VI - Structural Fire Response and Collapse Analysis Standard Fire Test Findings September 15, 2005 John L. Gross Building and Fire Research Laboratory National Institute of Standards and Technology U.S. Department of Commerce 2 Motivation for Conducting Standard Fire Resistance Tests of Floor Assemblies Fireproofing of the floors in the WTC towers was an issue from the original design of the floor system and throughout the service life. Decision to spray trusses directly was innovative Need for test was expressed by Architect of Record and Engineer of Record Uncertainty in how SFRM thickness was specified LERA report reviewed fire resistance of floor system after 1975 fire PANYNJ’s decision to upgrade fireproofing around 1995 3 ...
  6. PowerPoint Presentation

    https://www.nist.gov/system/files/documents/2017/05/09/6Treadway.pdf
    Fire Endurance Testing of Floor Truss Assemblies Prepared by: Joe Treadway Fred Hervey ASTM E119 – Standard Test Methods for Fire Tests of Building Construction and Materials ASTM E119 prescribes a standard fire exposure of controlled extent and severity. Performance is defined as the period of resistance to standard exposure before the first critical point in behavior (conditions of acceptance)is observed. Conditions of acceptance for floor systems include: • Sustained applied load during classification period • No passage of flame or hot gasses • Maximum and average temperatures of the unexposed side of the specimen • Maximum and average temperatures of the steel joists •Two tests conducted in Toronto at ULC August 7, 2004 - 35 ft. Restrained Assembly August 11, 2004 - 35 ft. Unrestrained Assembly •Two tests conducted in Northbrook at ULI A...
  7. Slide 1

    https://www.nist.gov/system/files/documents/2017/05/09/6Gross.pdf
    1 Technical Conference on the Federal Building and Fire Safety Investigation of the World Trade Center Disaster Session VI Structural Fire Response and Collapse Analysis September 15, 2005 John L. Gross and Therese McAllister Building and Fire Research Laboratory National Institute of Standards and Technology U.S. Department of Commerce 2 Contributors and AcknowledgementsContributors and Acknowledgements Project 6 Team • John L. Gross • Therese P. McAllister • Monica A. Starnes • Long T. Phan • Nicholas J. Carino Underwriters Laboratories, Inc. • Frederick Hervey • Mark Izydorek • John Mammoser • Joseph Treadway • William Joy • Aldo Jimenez • Romuald Bolewski 3 Contributors and AcknowledgementsContributors and Acknowledgements Simpson Gumpertz & Heger Inc. • Mehdi S. Zarghamee • Said Bolourchi • Daniel W. Eggers • Ömer ...
  8. No Slide Title

    https://www.nist.gov/system/files/documents/2017/05/09/5Grosshandler.pdf
    NIST World Trade Center ConferenceNIST World Trade Center Conference Session 5: Analysis of Active Fire Session 5: Analysis of Active Fire Protection SystemsProtection Systems William Grosshandler, Session Chair William Grosshandler, Session Chair Building and Fire Research LaboratoryBuilding and Fire Research Laboratory National Institute of Standards and TechnologyNational Institute of Standards and Technology Building Fire Safety SystemsBuilding Fire Safety Systems Egress systems: stairs, elevators, doors, protected corridors Passive fire protection systems: partitions, gypsum board, sprayed fire-resistive material (SFRM), intumescent materials Active fire protection systems: fire sensors and alarms notification systems sprinklers and water supplies non-aqueous fire suppression systems smoke management systems Recommendations for Improved Active Recommendat...
  9. WTC1, 2, 7 Fire Alarm Analysis

    https://www.nist.gov/system/files/documents/2017/04/28/5Grill.pdf
    Project No. 4 Analysis of Active Fire Alarm Systems in WTC 1 & 2 Robert J. Keough Rolf Jensen & Associates Raymond A. Grill, P.E., FSFPE Arup Fire Objectives • Document the design and installation of the fire alarm systems and compare them to applicable code and standard requirements. • Document the normal operation of the fire alarm systems. • Document modifications made to the fire alarm systems in WTC 1 and 2 following the 1993 bombing. • Document the performance of the systems on September 11, 2001 Summary of Scope • Task 1 – Document the Fire Alarm Design and Installation and compare the designs to the applicable codes and standards • Task 2 – Document the normal expected operation and provisions for redundancy • Task 3 – Document the modifications to the fire alarm system in WTC 1 & 2 after 1993 • Task ...
  10. No Slide Title

    https://www.nist.gov/system/files/documents/2017/05/09/5Ferreira.pdf
    Technical Conference on the NIST Federal Building and Fire Safety Investigation of the World Trade Center Disaster September 14, 2005 Project #4: Investigation of Active Fire Protection Systems Smoke Control Systems Sub-Task (NCSTAR 1-4D) 3610 Commerce Drive, Suite 817, Baltimore, MD 21227-1652 Phone:410-737-8677 Fax:410-737-8688 Web Site: www.haifire.com Michael J. Ferreira, P.E. Steven M. Strege NIST WTC Investigation NIST WTC Investigation Project #4: Investigation of Active Fire Protection Project #4: Investigation of Active Fire Protection Systems Smoke Control Systems SubSystems Smoke Control Systems Sub--TaskTask Purpose: Investigate the performance of the active fire protection systems in WTC 1, 2, and 7 and their role in fire control, emergency response, and fate of occupants and responders. NIST WTC Investigation NIST WTC Investigation Projec...
Showing results 61 - 70 of 2150782 documents for rychl pjka havov Navtivte web na WWWLOAN24HXYZ rychl pujka 1000 5000 k na uet online pjky comodor pjky spolenosti rychla pujcka online Valtice online pujcka pred vplatou Hlun pujcky online bez registru Slavkov u Brna nejlepsi pujcky do 5000 rychla pujcka online Jin pjky od soukrom osoby havlkv brod online pujcka ihned na cet Podivn sms pjka bez 1 k nonstop faktura k pujcce z fksp fajn nebankovni pujcka bez poplatku a registru