Ft. Riley Irwin Army Hospital

Ft. Riley, KS



SYSTEM TYPES: central utility plant; green space; boilers; chillers; filtration; pump skids

SERVICES PROVIDED: Virtual Design & Construction; Piping and Plumbing Fabrication; Piping and Plumbing Construction; Green Building/LEED


General Contractor: Balfour Beatty and Walton

Architect/Engineer :
Leo A Daly/RLF

United States Army Corps of Engineers (USACE)

Ft. Riley’s new Irwin Army Community Hospital was the largest single government contract underway at the time and was deemed a “statement facility” for Ft. Riley and the Federal Government.

The project consisted of a +570,000 SF community hospital with six-story hospital and clinic space, two-story central utility plant and two-story parking garage. The primary facilities include an inpatient medical facility with ancillary services. The building was divided into four zones and two facilities.

The main building consisted of a 262,000 sq. ft. hospital, which includes green roof structures. The other half of the main building consisted of 288,000 sq. ft. of clinic space.

The central plant is a two-story building of approximately 20,000 sq. ft. attached to the hospital that contains all hot water boilers, steam boilers, chillers, heat recovery chillers, hydronic pumps, reheat heat exchangers, condenser water pit, domestic water booster pump, domestic water heaters/storage tanks, domestic water UV and copper-silver ionization skids, medical gas source equipment, and fuel oil pump skids and filtration units serving the boilers and emergency generators.


  • 24 Air Handling Units
  • Three 750-ton centrifugal chillers
  • 232,000 manhours on plumbing and piping in the field
  • Two green roof spaces and a healing garden

Our Office Network

Kansas City

13605 W 96th Terrace, Ste 200
Lenexa, KS 66215
(913) 529-5000

Omaha, NE

14135 S 220th St, Ste 5
Gretna, NE 68028
(402) 401-4676

St. Joseph, MO

3815 Faraon Street, Ste A
St. Joseph, MO 64506
(816) 233-3305

Las Vegas, NV

5685 Cameron Street
Las Vegas, NV 89118
(702) 270-4432

Lawrence, KS

2151 Haskell Ave, Bldg 1
Lawrence, KS 66046
(785) 843-2910

Architectural Metal

8701 Elmwood Ave, Ste 500
Kansas City, MO 64132
(816) 708-0419

Manhattan, KS

301 S 4th Street, Ste 110
Manhattan, KS 66502
(785) 236-7350

P1 Group works with P1 Service, LLC to provide HVAC, mechanical, electrical, and plumbing service, performance solutions, and preventative maintenance. P1 Service, LLC has locations in Lenexa, KS, Wichita, KS, Topeka, KS, St. Joseph, MO, and Ankeny, IA.

Employees & Customers

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