Client: Air Force Civil Engineer Center
Location: Shemya Island, Alaska
Completion Year: September 2019
Scope of Work:
- Asbestos abatement
- Removal of utilities, misc. appurtenances
- Roof demolition
- Structural demolition
- Demolition of the foundation slabs
Brice performed the demolition of three unoccupied, dilapidated and decayed wooden hangars whose original construction dated back to World War II. Shemya Island’s harsh climate had damaged the hangars beyond repair. The hangars posed an environmental risk and occupied land that could be used in the future to support the EAS mission. Our scope of work included asbestos abatement, removal of utilities, miscellaneous appurtenances, roof demolition, structural demolition, and the demolition and removal of the foundation slabs. Due the harsh and often unpredictable weather in this region, Brice actively monitored the weather using a wind gauge to ensure the safety of the field crew working at heights as well as crane operations.
We processed demolition debris for removal from the island via barge or for disposal in the local landfill. In accordance with requirements to minimize landfill waste, successfully Brice salvaged 40% of the old growth wooden timbers used to construct these WW2-era hangars. We transported the timber back to Anchorage for re-use off-island.
Despite access to historical drawings, there was minimal detail about the original construction of the hangars including fastening systems, which presented challenges while deconstructing and demolishing the structures. Brice moved methodically through the demolition of the first hangar, encountering a plethora of bolts, screws, nails, and other unknown types of fasteners, some of which were as big as railroad spikes, that often broke the chainsaw chains. Through trial and error, we continuously applied lessons learned throughout the demolition process to enhance efficiencies and safety. Brice successfully completed the project early by applying lessons learned from the six-week demolition of Hangar 2, to the demolition of Hangars 3 and 4, which were each completed in four weeks.