High Voltage Project

Hovde Hall
Schedule | Milestones | Photos

The Hovde Hall project will include the installation of new ductbank into the vault, as well as the vault upgrade and repair work.

Schedule:

• Bid date: May 4, 2006
• Board of Trustees meeting: June 2, 2006
• Construction phase: First week of June to September 19, 2006

Milestones:

• The portable primary cable (high voltage) was run through the tunnel.
• The mobile substations were positioned on the sidewalk in front of Hovde, on the south side of Purdue Mall (see photo below).
• June 1: Hovde's power feed was converted to the mobile substation and the vault was shut down.
• June 8: Old electrical equipment has been removed from the deactivated vault (see photos below).
• June 9:
  • The Engineering Fountain in front of Hovde remains off until a new transformer is delivered by the contractor. Delivery may take up to two additional weeks.
  • Crews are excavating Manhole 19 to replace the frame and lid. The installation of the new duct bank will begin today or Monday June 12.
• June 14: The vault lid has been removed.
• June 21: The Engineering Fountain in front of Hovde Hall is now operational (see photo below). Both the water flow and lighting have been restored.
• June 22: The concrete pad is in place for the ductbank.
• June 28: The ductbank conduits have been installed and the concrete poured. Concrete repairs to the vault roof are complete. The new vault roof has been poured.
• July 21: The ductbank is complete and the sidewalk concrete has been replaced.
• August 2: Exterior work is complete (see photos). Fencing has been removed and new sod was placed to restore the landscaping. The only equipment that remains are the mobile substations and the fencing around them. The mobile subs will be removed once all of the installation in the vault is complete and the building has been connected to the 12.47 kV power.
• August 9: Interior work is nearly complete. All electrical equipment has been installed. Crews are completing the last necessary steps to finish the vault. An electrical shutdown has been scheduled for this Friday to switch Hovde's electrical system from the mobile substations to the new transformers powered by the 12.47 kV supply. See the "before and after" photos of the vault below.

Photos—Exterior Work:

Much of the area in front of Hovde has been fenced to protect the trees and landscaping.	The mobile substations are parked in a fenced area on the sidewalk directly east of the main entrance.
7/11: The ductbank, which leads from this manhole to the Hovde vault, has been poured and backfilled.	7/21: The sidewalk has been repaired.
Before: This access door to the Hovde Hall electrical vault had been damaged over time, and will be replaced.	After (June 13): The lid has been removed and improvements are being done to the vault. See interior photos below.
The Engineering Fountain was shutdown for approximately two weeks, but as of 6/21 lighting and water flow have been restored. 8/2 Exterior work is complete:	This photo shows the path of the ductbank toward the vault.
Sod was placed to restore the landscaping.
	Fence removal.
The new vault top. Interior Conditions:	The mobile subs will remain until all of the vault work is complete.
BEFORE Vault Ceiling	AFTER
Vault Walls
Old Switch	New Switch
Old Transformer	New Transformer
Loose cables	Cables are now secured in conduit