Tag Archives: pit

Santa Clara, CA – Seasoned elevator mechanic struck, killed by counterweight at Levi’s Stadium

by peter | 1 Comment

On Tuesday, June 11, 2013, around 6:45 a.m., seasoned elevator mechanic Donald White, 63, a 43-year industry veteran, was struck and killed by a counterweight while working on a ladder in an elevator pit. The elevator was being constructed by Schindler at the San Francisco 49ers’ new stadium, Levi’s Stadium, a $1.3 billion project expected to be completed in 2014. Cal/OSHA is investigating the accident and expects to have a completed report in approximately six months. It was not immediately clear what caused the counterweight to move while Mr. White was in the pit. This is the first major incident reported so far during the stadium’s construction.

Elevator accidents involving counterweights generally involve elevator personnel, as in this case, although we have documented at least two other recent cases involving non-elevator personnel that entered the elevator pit to clean the pit and to retrieve dropped keys. Besides counterweight collisions in the pit, elevator mechanics and inspectors can be struck by the counterweight as the car and the counterweight pass each other halfway up the hoistway. Working with a ladder in a pit is especially dangerous as it will reduce or eliminate available refuge space while also potentially introducing a foreign object into that space.

Sources reporting this incident include:

Mumbai, India – 18 year-old girl crushed to death under elevator while sweeping pit

by peter | 2 Comments

According to Indian news agency DNA (Daily News & Analysis, an 18 year-old girl was crushed to death Wednesday, January 9, 2013, after she entered the hoistway, apparently to sweep the pit. The report is somewhat unusual in that it specifically describes that the motor of the “old lift” somehow crashed down on top of her, fatally crushing her. The victim died at the scene. An employee at the building who was not named described the building as “dilapidated”. A comment on that article also notes that there may have been other similar incidents at that location. Read the full story, published January 10, 2013.

Incidents like this highlight why it is important that access to elevator pits, hoistways, and machine spaces is restricted to elevator personnel only. It is not yet clear how the victim was able to access the pit, however, the original news report indicates that it was apparently part of her “sweeping duty” to sweep the pit. In the United States, building maintenance and housekeeping staff are generally prohibited by code from entering these restricted spaces. Cleaning of the pit should be part of the maintenance control program followed by the elevator contractor during periodic preventive maintenance visits.

Sabhan, Kuwait – Elevator mechanic killed, another injured; crushed by falling car

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According to the Kuwait Times, an elevator accident left one elevator mechanic dead and another seriously injured in the Sabhan neighborhood of Kuwait. Although details of the circumstances are scant, it appears that both mechanics were working in the hoistway pit of an interior ministry building at the time the accident occurred. The elevator unexpectedly descended, crushing the two men, killing one instantly. Read the full story by the Kuwait Times, published December 27, 2012.

In the United States, elevators have long been required to have stop switches in the pit to prevent unexpected movement of the car when working in the pit. It is standard procedure to ensure that the elevator is under control before entering the pit or accessing the car top. Crushing accidents involving the pit often involve improperly trained personnel accessing the pit, for example to retrieve dropped keys. However it is critical that only properly trained elevator personnel enter the pit, to prevent this type of incident. It is not clear whether or not the elevator in this incident was equipped with a stop switch in the pit, or whether the mechanics had followed procedures to gain control of the elevator before entering the pit. We will update this story if more details emerge.

Washington Heights, NY – Building superintendent trapped in pit, suffers head injury

by peter | 1 Comment

According to the New York Post, the superintendent at a building in Washington Heights was seriously injured Thursday, August 16, 2012 when he was struck in the head by an elevator counterweight. The victim, whose name was not immediately released, went in the pit around 8:40 a.m. in order to retrieve keys that a tenant had accidentally dropped through the gap between the floor sills. The elevator had apparently ascended to the sixth floor as the counterweight descended into the pit, striking the victim’s head. Read the full story by the New York Post.

A later article by DNAinfo.com New York reported that the building’s managing agent, Bronstein Properties LLC, identified the victim as Armando Bennett. Bronstein Properties’ spokesman Joe Masino noted, “I don’t allow my supers to go down the shaft, [they] should call the elevator company.”

If the spokeman’s statement is accurate, then it is not clear how the superintendent opened the hoistway door in order to gain access to the pit, unless it was a walk-in pit, which it does not appear to be given that the victim was describing as doing “down the shaft” to access the pit. Based on the media accounts of the accident, it appears that the victim may have entered the pit without first gaining control of the car, for example, via the stop switch in the pit. Assuming the superintendent entered the pit without gaining control of the car, and the door closed behind him, the elevator would resume automatic operation, for example, responding to the a sixth (top) floor call, which would have then sent the counterweight into the pit at full speed.

Possession of hoistway door keys is restricted by ASME A17.1 Rule 8.1.2, which covers Group 1, “Restricted” keys. Keys in Group 1 are restricted to elevator personnel only. Unfortunately it is all too common that unauthorized individuals obtain hoistway door keys. This accident serves as a reminder that an elevator hoistway is one of the most dangerous areas in a building, and only properly trained elevator personnel should ever access the hoistway. If an object falls into the pit, it is critical to wait for elevator personnel to retrieve the item to prevent injuries like this.