banner ad
Experts Logo

articles

Forensic Engineering Experts: Doors & Gates

By: Dr. Irving Ojalvo

Tel: (800) 358-9909
Fax: (888) 358-9901
Email: Technology Associates

View Profile on Experts.com.

Technology AssociatesDoors and gates, whether automated or manual, can pose a serious hazard to users if not designed, manufactured, installed and maintained properly. The different types include automatic doors, overhead garage doors, elevator doors, sliding doors, swinging doors, and automatic gates. Door injuries are typically associated with an impact between the door or gate and a user. To reduce such injuries, standards have been developed to limit the speed and energy associated with a closing door or a gust of wind blowing a door open. Additional safety requirements exist for automatic doors, gates and door closers. Testing can determine whether a door meets applicable standards.

Expertise

We have extensive experience in many aspects of door accidents including:

  • Proper door closer operation including sweep and closing speeds
  • Presence and motion sensors which control door opening and closing
  • Door and gate standards
  • Testing: force, speed & energy measurements

Questions Answered

Through scientific analysis, we can help you answer pertinent questions such as:

  • Did the elevator door close with too much energy?
  • Should the closer have prevented the wind from blowing the door closed?
  • Did the door satisfy the appropriate standard?
  • Could the injury have been caused by a faulty sensor for the closing gate?

Case Examples

Windblown Glass Door Shatter:

An improper closer on a store's glass front door permitted the wind to blow the door open rapidly. The subsequent impact with a nearby structural element shattered the plate glass and caused a long piercing cut on a customer's arm. Our analyses of the door closer and wind forces convinced the jury that the door closer was deficient and the customer was awarded a large cash settlement.

Elevator Door Closing:

A woman claimed to have been injured by a closing elevator door at her apartment complex. An inspection of the door determined that its closing speed and closing force complied with the applicable elevator standard requirements. Our biomechanical analysis showed that the forces imparted by the door during the alleged impact would not have been severe enough to cause the claimed injuries.


Dr. Irving Ojalvo is Chairman of Technology Associates (www.technology-assoc.com), a forensic engineering firm with offices in New York City and Connecticut. The firm's technical personnel, all of whom have advanced degrees, perform accident reconstruction involving issues of biomechanics, mechanical, traffic, and human factors engineering.

©Copyright - All Rights Reserved

DO NOT REPRODUCE WITHOUT WRITTEN PERMISSION BY AUTHOR.

Related articles

technology_associates_logo.gif

7/31/2009· Accident Investigation & Reconstruction

Forensic Engineering Experts: Power Saws

By: Dr. Irving Ojalvo

Approximately 125,000 serious injuries occur in the US each year related to the use of portable and fixed power saws. Lacerations and similar injuries, such as abrasions and avulsions, account for over 90% of these, which generally occur to males and result in losses in the tens of millions of dollars annually.

Mechanical-Safety-Engineering-Logo.gif

8/26/2013· Accident Investigation & Reconstruction

Forensic Clues: Tractor Accidents and Rollover Protective Structures

By: John Ryan, BSME, PE

Farming is a dangerous occupation. Tractor rollover accidents have been killing people since the 1920's. In 1990, the National Safety Council estimated 460 people were killed while operating tractors. Tractor rollover caused 239 of these fatalities. Another estimate suggests a more conservative number of annual fatalities - 132, that are the result of tractor rollover accidents. In a four-year period in Pennsylvania alone, 72 people died as a result of tractor rollover accidents.

technology_associates_logo.gif

8/7/2009· Accident Investigation & Reconstruction

Forensic Engineering Experts: Airbags

By: Dr. Irving Ojalvo

Airbags are credited with reducing numerous injuries and saving many lives during vehicle accidents. However, there have been incidents where they do not function as intended, and have even caused injuries such as explosive powder burns, detached eye retinas, child suffocation and impact deaths.

;
Experts.com-No broker Movie Ad
Unicourt Logo Button

Follow us

linkedin logo youtube logo rss feed logo