Crane Safety at the Sacred Heart School Demolition

Empire Services • September 14, 2021


For 115 years, the Sacred Heart School has been a landmark in Allentown, PA. Unfortunately, a devastating fire on June 10, 2020, destroyed it. The multi-alarm fire caused extensive damage to the roof and the supporting structure for the roof. Smoke and water damage was throughout the structure as well. Once the damage was assessed, the Diocese of Allentown concluded that the building would be demolished and not rebuilt. Empire Services was contracted by Stellar Construction to demolish the three-story building. The biggest part of the strategy involved the use of a crane, which involved two weeks of preparation leading up to the crane being on site. We used a 110-ton hydraulic crane subcontracted from Dickinson crane to remove the steel roof trusses. 

Crane Safety Protocols

The use of a crane requires crane safety protocols to be in place. At Empire Services, safety is our priority, not only for our employees, but also for our subcontractors, customers, and the community. For this project, a lift plan was done and vetted by I.B. Dickinson & Sons, Inc. It consisted of dry runs prior to actual lifts performed, site layout and pre-planning, on-site meetings to review the lift plan and crane set area, radio communication, hand signals, spotters on the ground and in a high reach. We also utilized guide ropes/tag lines with ground personnel guiding the trusses to the staging area on the ground.

The Demolition Process

With crane safety implemented, the demolition process could begin. The equipment chosen for the project also included a John Deere 450 excavator with long boom and rotating grapple, track loader, lull, and a 120-foot-high reach. The strategy of this demolition is to remove from highest to lowest, and finishing with the cleanup, stoning the top and filling the basement with clean fill. The process was started by removing the interior timber walls on the third floor. The walking bridge has been separated on the third floor from the adjacent school building, sealing off the opening. The piping was removed from the three-story structure. The removal of the fire-damaged roofing materials and timbers attached to the steel trusses came next. A few of the key cross timbers remain to provide lateral support for the 5,500-pound steel trusses until it is time to lift them off with the crane. 


To remove the trusses, the front façade of the building was removed by hand to matching elevations of the adjacent exterior walls. This provided clearance and a clear line of sight for the man lift and the crane to reach the steel trusses for safe removal. After the front façade was demolished by hand, bringing it down the same plane as the exterior walls, it provided the proper clearance for the 120-foot-high reach to rig and visually spot for the crane removal of the trusses. The high reach was used to keep the spotters out of the structure and in line of sight of the crane operator. The chimneys on the north and south walls of the structure will also be demolished by hand down to match existing exterior walls on either side of the building. 


The main challenge of the project is the limited staging area. The building is located on a busy, two-lane street and is very close to adjacent buildings, overhead power and communications lines and a guide wire for another utility pole. However, our crew has the experience to expertly work and maneuver equipment in tight spaces. Traffic control has been implemented to ensure vehicles can safely pass through the demolition area. Demolition currently continues to bring the building down to the ground while removing construction debris. The project is estimated to be completed next month.


Empire Services has provided emergency demolition services for Reading and the surrounding area for over 60 years. Our team has the experience and expertise to handle various equipment and to ensure the correct safety protocols are in place for a successful job. To learn more about Empire Services’ demolition services, contact us today! 



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