Project Summary

$220 million, five-story, 570,639 SF, 192-bed expansion to the existing Alfred I. duPont Hospital for Children (AIDHC) in Wilmington, Delaware.  The Nemours Delaware Expansion Project includes a 108,000 SF, 188-car ground-level parking garage below the new addition. The first floor of the building contains a new emergency department, atrium, and retail and dining facilities. The second through fifth floors each contain two wings of 24 inpatient beds. The second floor contains 32 beds of critical care PICU beds and 16 beds of step-down and med-surg beds.  The new building is joined to the existing facility with a three-story connecting link.

Personnel Hours


Total Personnel Hours



Start: May 2013
Completion: November 2014

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AEI Affiliated Engineers, Inc.


456,000 Sq/Ft

Expansion Including 148 New Patient Rooms,
Parking Garage & New Emergency Department

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FKP Architects

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Construction Manager


“To successfully implement this complex project required conscientious planning and meticulous attention to detail. Tri-M more than met the challenge with a well defined, project plan, construction management team and a very experienced engineering team.”
Chuck Egan
MEP - Project Manager, AI duPont Hospital

Project Details

18,000+ System Points

Scope of Work:

  • Temperature and Humidity Control
  • Utility Monitoring and Reporting
  • Lighting Control
  • CCTV Integration
  • Card Access System
  • Visitor Processing
  • UL864 Smoke Control

Equipment Installed:

  • (40) Network Controllers
  • (2,150) Field Controllers
  • (385) I/O Modules
  • (2) Servers
  • (13) Workstations
  • 330 Card Access Doors
  • 18 PTZ Security Cameras
  • 223 Miles of Fiber Optic Cable

Equipment Controlled:

  • (10) Air Handler Units
  • Central Utility Plant
  • (4) Chillers (5) Cooling Towers
  • (4) Boilers (2) Heat Exchangers
  • Over (500) VAV Boxes
  • Glycol Snow Melt System
  • Isolation Rooms
  • Automatic Transfer Switches

Third-Party Integrations:

  • Medical Gas Compressors
  • Chillers
  • Variable Speed Drives
  • Substation Power Meters
  • Fan Wall PLCs


BIM coordination completed prior to Tri-M being awarded the project.   

Prefabrication: Patient room headwalls & bathroom pods, MEP racks and nurse workstations were prefabricated offsite. Customized control panels for air-handling equipment and primary & secondary water systems were built in Tri-M’s UL certified panel shop.

Tri-M’s value engineering efforts provided solutions that exceeded the customer’s expectations while decreasing overall project costs.

Patient Monitoring which includes: infant protection, patient wandering protection, Phillips Cardiac Monitoring System, and several positive and negative patient isolation rooms which are controlled to very tight pressure differential levels. All systems installed by Tri-M.

Tri-M’s Network Infrastructure team installed all data/communication room racking and cable tray systems used to connect equipment and computers. Tri-M furnished and installed over 223 miles of single mode fiber optic cabling connecting 1,706 points, and a CAT6A 10 gigabit copper network which allows for future growth.

Each of the 148 patient rooms were broken down into three pre-manufactured (prefabricated) sections (operator workstation area, medical gas headwall and bathroom pods) and built offsite. Tri-M also built custom control panels for the Building Automation System.