EPIC Campuses 2 through 5
Silty clay overburden soil over predominantly dolomite/limestone bedrock. The bedrock was of moderate strength with weak zones of karstic features. Karstic features include discontinuities varying from soft clay filled to open voids.
size and solutions:
Over 500,000 linear feet of micropiles
Over 66,000 square feet of permanent soil nail and shotcrete wall
Epic Systems intergalactic headquarters is set on 950 acres of land outside of Madison, Wisconsin. A leader in healthcare software, Epic Systems has expanded their headquarters with new office buildings, parking garages and support structures.
The karstic bedrock geology has required a deep
foundation technique that is able to be installed through voided and highly weathered rock zones. Nicholson has provided design-build micropile solutions to all of the infrastructure on campuses two through five utilizing a variety of installation techniques and micropile designs.
Construction of a new 11,000 seat auditorium at the headquarters required the construction of a permanent soil nail wall adjacent to existing office buildings. The maximum retained height for the soil nail wall is 60 feet with approximately 2,500 permanent soil nails installed.