scholarly journals Forensic Engineering Analysis Of Vapor Transmission During Re-Roofing Project

2013 ◽  
Vol 30 (1) ◽  
Author(s):  
Paul Swanson
Keyword(s):  
Adverse Effects ◽  
Preventive Measures ◽  
Forensic Analysis ◽  
Building Construction ◽  
Construction Process ◽  
Engineering Analysis ◽  
Forensic Engineering ◽  
Building Environment ◽  
Materials Used

Roof Replacement Projects Are Routinely Conducted When A Building Is Occupied. Normal Safety Protocols That Control The Execution Of The Work And The Materials Used Are Specified In The Project Manual To Protect The Building Environment From Adverse Effects During The Course Of The Work. This Is A Case Where The Normal Protocols Were Insufficient To Protect The Building Occupants From Exposure To Vapors Present During The Construction Process. The Resulting Forensic Analysis Revealed That Elements Of The Building Construction Provided The Mechanism For Vapor Transmission That Together With Standard Preventive Measures Actually Created A Condition That Could Increase The Concentration Of Vapors Within The Building.

scholarly journals Forensic Engineering Analysis of a Fatal Trailer Wheel-Separation Failure

2017 ◽  
Vol 34 (2) ◽  
Author(s):  
Stephen A. Batzer
Keyword(s):  
Forensic Analysis ◽  
Front Wheel ◽  
Engineering Analysis ◽  
Passenger Compartment ◽  
Traffic Lane ◽  
Forensic Engineering ◽  
Cantilever Bending ◽  
Winter Time ◽  
Separation Failure ◽  
Left Front

A forensic analysis of a fatal trailer wheel-separation failure is presented in this paper. An older three-axle trailer carrying snowmobiles was being driven at highway speed during winter time in Michigan. The left front wheel detached due to the catastrophic failure of all six lug studs. The wheel traveled into the on-coming traffic lane and struck the roof of a sedan driven by a local student. The driver of this vehicle was killed instantly due to passenger compartment intrusion. One possibility was that the lug nuts were improp-erly tightened during a recently performed service — and that this looseness diminished clamping forces and led to cantilever bending of the studs and fatigue fracture. An analysis of the defendant’s narrative and of the failure were performed.

scholarly journals Forensic Analysis Of Tilting File Cabinets

2002 ◽  
Vol 19 (2) ◽  
Author(s):  
Wilbur T. Yaxley
Keyword(s):  
Forensic Analysis ◽  
Engineering Analysis ◽  
Back Injuries ◽  
Forensic Engineering ◽  
File Cabinet

This Case Involved A File Clerk Inserting Files Into An Office 4 Drawer File Cabinet. The File Cabinet Did Not Have Latching Devices For The Drawers. The File Drawers Were Designed To Be Stabilized With A Small Indent In The Suspension Track To Prevent The Drawers From Unexpectedly Opening. The File Cabinet Unexpectedly Tilted And Opened All The Drawers With A Force Sufficient To Knock The Clerk To The Floor With The File Cabinet On Her Back. The Clerk Sustained Substantial Back Injuries. The Jury Agreed With The Forensic Engineering Analysis And Were Shocked At The Ease Of The Drawers Opening, The Cabinet Falling, And The Force Of Overturning Of The File Cabinet. The Jury Awarded The Verdict To The Plaintiff With A Surprising Twist.

scholarly journals Forensic Engineering Analysis Of Failed Roller Bearings

1998 ◽  
Vol 15 (2) ◽  
Author(s):  
Olof H. Jacobson
Keyword(s):  
Case Studies ◽  
Forensic Analysis ◽  
Rolling Contact ◽  
Rolling Element Bearings ◽  
Bearing Failure ◽  
Engineering Analysis ◽  
Operating Characteristics ◽  
Bearing Failures ◽  
Rolling Element ◽  
Forensic Engineering

Failure Of Rolling Element Bearings Often Results In Damage To The Bearing Elements And Adjacent Components Such As Axles, Shafts, Gearboxes, Wheels, Etc. Forensic Analysis Of Rolling Contact Bearings Is Discussed In This Paper. A Review Of Bearing Types And Typical Operating Characteristics Is Presented. A Procedure For Systematic Examination And Analysis Of Bearing Failure Evidence Is Suggested, And Several Case Studies Are Presented Which Demonstrate The Types Of Evidence Typically Remaining And The Logic Which Leads To Engineering Conclusions Concerning The Cause Of Bearing Failures.

scholarly journals Forensic Engineering Analysis Of Reliance On Standards In A Multi-Defendant Cross Claim Case

2010 ◽  
Vol 27 (2) ◽  
Author(s):  
John P. Leffler ◽  
Schlender Erich
Keyword(s):  
Forensic Analysis ◽  
Engineering Analysis ◽  
Safety Standard ◽  
Student Death ◽  
Civil Suit ◽  
Forensic Engineering ◽  
General Topic

A Personnel Lift Was Rented By A Film School Student For Use In Filming A Student Movie. The Hired Operator Caused The Lift To Contact Powerlines, Resulting In A Student Death And A Civil Suit. One Defendant, The Lift Rental Agency, Lodged A Cross-Claim Against Another Defendant, The Renter. This Forensic Analysis Examines The Ansi/Sia A92 Safety Standard For These Lifts, The Rental Agency Varied Levels Of Reliance On (And Compliance With) That Standard, And The General Topic Of Providing Reasonable Notice Of Both Responsibilities And Potential Hazards.

scholarly journals Forensic Engineering Analysis Of A Car Vs. Car Vs. Pedestrian Accident

2006 ◽  
Vol 23 (2) ◽  
Author(s):  
Jeffrey D. Armstrong
Keyword(s):  
Energy Analysis ◽  
Forensic Analysis ◽  
Engineering Analysis ◽  
Interstate Highway ◽  
Emergency Personnel ◽  
Vehicle Crash ◽  
Pedestrian Accident ◽  
The Disabled ◽  
Forensic Engineering ◽  
Concrete Barrier

This Paper Summarizes The Forensic Engineering Analysis And Reconstruction Of A Nighttime Vehicle Crash. The Crash Occurred On The Inside Shoulder Of A Divided Interstate Highway Separated By A Concrete Barrier. A Driver Had Stopped His Vehicle On The Inside Shoulder Of The Westbound Section Of The Highway, Presumably Due To Car Troubles. His Car Was Struck In The Rear By Another Vehicle. When Emergency Personnel Arrived At The Scene, The Owner Of The Disabled Vehicle Was Found Deceased On The Inside Lane Of The Opposing Eastbound Roadway. As The Crash Was Being Investigated, A Vehicle Returned To The Scene Where The Driver Indicated That He Thought He Had Run Over Something As He Was Traveling Eastbound On The Freeway. The Forensic Engineer Was Retained To Reconstruct The Accident, And To Determine How The Driver Of The Disabled Vehicle Came To Be In The Opposing Roadway. The Reconstruction Involved Photogrammetry, Momentum Analysis, Crush Energy Analysis, Proper Use Of Pedestrian Throw Formulae, And A Forensic Analysis Of Evidence On The Disabled Vehicle.

scholarly journals Forensic Engineering Analysis of Common Failures and Inspection Procedures for Residential and Commercial Chairs

2020 ◽  
Vol 36 (1) ◽  
Author(s):  
Anthony Sasso
Keyword(s):  
Paper Industry ◽  
Engineering Analysis ◽  
Safety Standards ◽  
Root Cause ◽  
Maintenance Program ◽  
Cause Of Failure ◽  
Forensic Engineering ◽  
Inspection And Maintenance ◽  
Materials Used ◽  
Mechanism Of Failure

Chairs have been designed, manufactured, and used by humans for thousands of years. Eventually, all chairs wear out and fail. When someone is injured due to this failure, costly litigation can ensue. Forensic engineers are consulted to investigate the root cause of failure, and whether the mechanism of failure could have been detected prior to the accident to avoid injury. Materials used in chair manufacturing and several examples of failures are discussed in this paper. Industry safety standards and manufacturers’ guidelines are used as a basis for a proposed inspection and maintenance program for chair owners.

scholarly journals Toxicological Profile of Plasmonic Nanoparticles in Zebrafish Model

2021 ◽  
Vol 22 (12) ◽  
pp. 6372
Author(s):  
Marta d’Amora ◽  
Vittoria Raffa ◽  
Francesco De Angelis ◽  
Francesco Tantussi
Keyword(s):  
Surface Plasmon Resonance ◽  
Adverse Effects ◽  
Physicochemical Properties ◽  
Surface Plasmon ◽  
Danio Rerio ◽  
Plasmonic Nanoparticles ◽  
Comprehensive Understanding ◽  
Zebrafish Model ◽  
Toxicological Profile ◽  
Materials Used

Plasmonic nanoparticles are increasingly employed in several fields, thanks to their unique, promising properties. In particular, these particles exhibit a surface plasmon resonance combined with outstanding absorption and scattering properties. They are also easy to synthesize and functionalize, making them ideal for nanotechnology applications. However, the physicochemical properties of these nanoparticles can make them potentially toxic, even if their bulk metallic forms are almost inert. In this review, we aim to provide a more comprehensive understanding of the potential adverse effects of plasmonic nanoparticles in zebrafish (Danio rerio) during both development and adulthood, focusing our attention on the most common materials used, i.e., gold and silver.

scholarly journals Economic design of alternative system to reduce the water distribution losses for sustainability

2021 ◽  
Vol 11 (7) ◽  
Author(s):  
H. J. Surendra ◽  
B. T. Suresh ◽  
T. D. Ullas ◽  
T. Vinayak ◽  
Vinay P. Hegde
Keyword(s):  
Cost Estimation ◽  
Distribution System ◽  
Water Distribution ◽  
Preventive Measures ◽  
Scale Model ◽  
Microsoft Excel ◽  
Water Losses ◽  
Population Forecasting ◽  
Water Companies ◽  
Materials Used

AbstractWater companies and their consumers affected with leakages in water distribution system worldwide. This has attracted many practitioner’s attention as well as researchers over the past years. Selected study area suffers from water losses of about 10 to 15% which accounts to loss of about 9 to 9.75 million liters per month. The present study was under taken to understand, analyze and evaluate the losses and suggest preventive measures of wrapping and repair clamping for control of these losses. The assessment of water losses is done through comparative analysis of data using Microsoft Excel software. Population forecasting is done in context of assessing the amount of water lost that can be prevented in future decades, adjusting to increased water demand and losses. For better efficiency of the suggested methods, experimental analysis was carried out on a reduced scale model of a single stretched pipeline. Cost estimation of the preventive measures was done by obtaining information about the materials used by trading professionals.

Engineering Planning and Management Control in High-Rise Building Construction

2012 ◽  
Vol 193-194 ◽  
pp. 1257-1260
Author(s):  
Min Zhang
Keyword(s):  
Management Control ◽  
Building Construction ◽  
Construction Process ◽  
High Rise ◽  
High Rise Building ◽  
Planning And Control ◽  
Flexible Modeling ◽  
Planning And Management ◽  
And Control ◽  
Different Levels

Various challenges should be considered in the development of an effective model for the planning and control of high-rise building construction. These challenges have been identified as results of the construction process. This paper discusses the engineering planning and management control in high-rise building construction. The methodology should also be able to address the concerns and considerations regularly faced in the industry and thus providing flexible modeling, which can be used by different levels of management

scholarly journals Forensic Engineering Analysis Of Alleged Property Damage From Construction Vibrations

2010 ◽  
Vol 27 (2) ◽  
Author(s):  
D.S. Sax Saxena ◽  
Saxena Anu
Keyword(s):  
Case History ◽  
Construction Projects ◽  
Pile Driving ◽  
Engineering Analysis ◽  
Existing Buildings ◽  
Construction Methods ◽  
Forensic Engineering ◽  
Eye Examination ◽  
Florida Panhandle ◽  
Subsurface Treatment

The Influence Of Construction And Pile Driving Vibrations On Surrounding Buildings, Including Hospitals And Eye Examination Facilities, Sensitive Devices Such As Computers And Surgical Microscopes Or Electronic Machines, And People In The Urban Environment Is A Significant Consideration In Obtaining Project Approvals From Appropriate Agencies And Authorities. Implementation Of Construction Projects In Areas Adjacent To Existing Buildings (Aged, Historical, Residential, Commercial, Industrial, Medical Services, Or Electronic Services) Creates Additional Difficulties. Specialized Case History Is Presented Where Damage To Sensitive Structures From A Variety Of Vibratory Construction Methods Ranging From Pile Driving, Highway Construction, Rock Excavation And/Or Blasting, Was Considered. Twenty Homeowners From A Residential Subdivision In The Florida Panhandle, Claimed Damage Including Cracking To Their Properties During Construction Of Various Portions Of City Storm Water Treatment/Enhancement Project. It Was Also Alleged That During Excavation And Construction Of Drainage Structures, Especially Four Subsurface Treatment Vaults That Required Installation And Extraction Of Sheet Piles Using Vibratory Hammer, Stability Of The Nearby Residential Structures Was Endangered And Resulted In Movement/Cracking. Forensic Engineering Analysis Was Effectively Utilized To Identify, Investigate, And Remediate The Concerns As Well As Assist In Litigation And In Some Cases Avoidance. This Technical Paper Presents Some Legal Issues Related To Litigation, Mediation, And Resolution Involving Jurisprudence System And Introduces A Case History That Includes All Elements Of Forensic Engineering.

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