2:15 PM, Wednesday
The afternoon was routine. Workers from Precast Services Inc., an Ohio-based subcontractor, were installing precast concrete floor decking and roof segments on a seven-level parking garage at 30th Street and Grays Ferry Avenue. The structure was being built for the Children's Hospital of Philadelphia.
At approximately 2:15 PM, a precast concrete roof segment in the stairwell tower failed, fell to the level below, and triggered a progressive collapse that cascaded through all seven levels until the entire corner tower had folded in on itself.
"After placement, a precast roof segment failed and fell to the level below, triggering a progressive collapse of connected sections across all seven levels."
Mayor Cherelle L. Parker
The collapse was captured on video. It shows the structure crumbling in seconds, sending a cloud of dust over the neighborhood.
The Workers
Three members of Ironworkers Union Local 401 were killed:
| Name | Status |
|---|---|
| Stepan Shevchuk | Pulled from rubble. Pronounced dead at Penn Presbyterian Medical Center at 3:03 PM. |
| Matthew Kane | Trapped in rubble. Presumed dead. |
| Mark Scott Jr. | Trapped in rubble. Presumed dead. |
Two other workers were rescued, treated, and released.
The Ironworkers Union described the tragedy as "unthinkable" and pledged to recover the missing workers "with the greatest amount of dignity and respect humanly possible."
The Rescue That Became a Recovery
Immediately after the collapse, the Philadelphia Fire Department deployed specialized urban search and rescue teams, robots, drones, and detection canines. But the structure was so unstable that rescuers couldn't safely enter.
"We have to very carefully and methodically deconstruct this building for the safety of the people working on it."
Fire Commissioner Jeffrey W. Thompson
By Wednesday evening, there had been no contact with the two trapped workers. On Thursday, April 9, four FEMA-certified search dogs were deployed. None indicated signs of life. The operation shifted from rescue to recovery.
Mayor Parker confirmed that evening that the two missing workers were presumed dead.
The Demolition
Engineers determined the remaining structure was "extremely weakened and could collapse at any moment." Deconstruction was ruled too dangerous. The decision was made to demolish.
On Friday, April 10, crews spent the entire day assembling a demolition crane. A Local 401 union flag was attached to the crane as a tribute from the ironworkers' brotherhood.
On Saturday, April 11, demolition began at first light. A wrecking ball started swinging at the structure, sending dust and concrete chunks flying. The goal: demolish down to a level safe for firefighters to enter and recover the remains by hand.
The city's Office of Emergency Management warned neighbors to expect noise and recommended keeping windows closed.
What Failed
Precast concrete is a common construction method for parking garages and bridges. Slabs are manufactured off-site, transported, and assembled on-site using cranes. Individual segments, such as double tee beams, routinely weigh 25 tons or more depending on their span and configuration.
The method is standard and considered safe. But it introduces multiple potential failure points:
- Manufacturing defects: problems during casting or curing
- Transportation damage: cracking during transport to the site
- Crane operations: loss of control during placement
- Connection failures: improperly embedded steel, poor welding
- Inadequate temporary supports: the structure is inherently unstable during construction until all connections are finalized
"Starting from the manufacturer to the transportation to the lifting of these heavy elements, to the connections themselves, to the fact that the structure is unstable while you're building it, there are many, many opportunities here for errors."
Prof. Abieyuwa Aghayere, Drexel University, structural engineering
"Catastrophic construction collapses do not happen without failures in either design, casting, or connection."
Andrew Duffy, catastrophic-injury attorney, Saltz Mongeluzzi Bendesky
The Precedent: Tropicana, 2003
This is not the first time a precast concrete parking garage has collapsed during construction.
On October 30, 2003, a parking garage under construction at the Tropicana Casino in Atlantic City partially collapsed when five levels of an exterior bay came down, killing four workers and injuring twenty.
The cause: inadequate temporary supports and improperly anchored steel reinforcements. The subcontractor, Fabi Construction, was cited by OSHA as a repeat offender with a history of safety violations.
The resulting settlement: $101 million across 36 plaintiffs, described at the time as the largest construction-accident settlement in the nation.
Same construction method. Same failure pattern. Twenty-three years apart.
Philadelphia's Grim Record
Philadelphia has been here before. In June 2013, a building under demolition collapsed onto a Salvation Army Thrift Store at 22nd and Market Streets. Seven people were killed. Fourteen were injured. The contractor received 15–30 years in prison. The settlement was $227 million (the largest personal injury payout in Pennsylvania history).
WHYY has reported on an uptick in building collapses caused by illegal construction in the city. The L&I commissioner attributed the trend to "cowboy contractors." Over 20 construction workers have been killed on Philadelphia job sites in just the last three years.
Sources: Philadelphia Inquirer, WHYY, NBC10, 6ABC, CBS Philadelphia, OSHA. Full source list.
The Investigation
OSHA is leading the investigation, with personnel on-site conducting interviews and reviewing construction records. Key questions include:
- Were adequate temporary supports in place during installation?
- Did the subcontractor follow engineering specifications?
- Were periodic inspections conducted at required intervals?
- Were there manufacturing defects in the precast segments?
- Were connections properly embedded and welded?
The Philadelphia DA's Office is also preserving evidence at the site.
Experts estimate the investigation could take six months or more due to existing OSHA backlogs. Any citations, violations, or written reports will be made public.
"We are going to get to the damn bottom of what happened."
Mayor Cherelle L. Parker