U.S. Army Fort Belvoir Nolan Building

Fort Belvoir, VA

About this Project

OCI provided mechanical, electrical, plumbing engineering design services for design-build projects with Kiewit Federal group Inc. under IDIQ contract with U.S. Army Corps of Engineers. OCI designed multiple renovation and retrofit projects for Nolan building in Fort Belvoir.

HVAC Repair Project: The scope of work was to modify 14 central air handling units serving the building and their associated ductwork. OCI performed a detailed survey of the existing systems. Our team provided mechanical and electrical engineering drawings, specifications and directions to replace AHU fan motors, shafts and bearings and repair the damaged supply and return main ducts connecting the building to air handling systems. As part of this project two new chilled water AHU systems with complete ductwork, air distribution system and DDC controls were designed to replace inefficient existing DX systems serving two UPS rooms in the building.

Unit Heater Project: OCI performed a complete survey of 19 existing hydronic unit heaters in the Nolan building. The study included load calculations, a comprehensive analysis of the units’ performance and mechanical and electrical drawings with repair and replacement specifications for each unit heater.

DDC control Project: The Nolan building had many equipment components with stand-alone controllers that were not connected to the building automation system for system monitoring and operation. OCI performed a detailed survey to identify the type of controllers for each existing component including 31 chilled water fan coils, 19 data center chilled water in row cooling systems, four humidifiers, 6 UPS systems, and five electric switch gears. Our team provided proper control modules and interfaces, a complete list of control points, and a sequence of operations for all systems to be connected to building automation system (BAS).

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