Geotechnical Project Summary

Chautauqua Hangar
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Chautauqua Air
Project Name: Airlines Maintenance Hangar
Location: Louisville International Airport (SDF)
Facility Type: Aircraft Hangar, Apron and Taxiways
GEM Services: Environmental Assessment
Site Safety and Health Plan Preparation
Construction Monitoring and Testing for Foundations
Geotechnical Exploration
Project Description: GEM conducted a design phase geotechnical exploration and environmental assessment, developed the construction Site Safety and Health Plan, and provided construction phase monitoring and testing of drilled pier foundations for this facility at the Louisville International Airport. The project included an approximately 460 feet x 120 feet, steel-frame, three bay, aircraft maintenance hanger with an attached administration/storage/parts “lean-to” building. Pavements included: an employee parking lot, truck access, aircraft apron, east-west taxiway, widening of existing Airport Security Road and conversion into a temporary taxiway, and a temporary taxiway tie-in to existing permanent taxiway. The geotechnical exploration disclosed soft soil conditions and the need for significant improvement in pavement & slab subgrade areas. Recommendations were developed and successfully implemented for subgrade stabilization with a layered geotextile/limestone shot rock bridging system. Based on the weak soil conditions and high column loads, GEM developed recommendations for supporting the hangar structure on end bearing foundations (drilled piers/caissons) bearing on shale bedrock. Conditions related to past site use that were delineated by the environmental assessment resulted in special precautions being exercised during drilled pier construction to provide safe working conditions. GEM provided construction technicians with OHSA 40 hour Hazardous Waste Operations Training for this phase of the work. GEM also monitored and tested the impacted areas when they were exposed.