University of Pittsburgh

RPA Engineering provided mechanical engineering services for a multi-phase steam and condensate infrastructure project. Originally conceived to serve a newly constructed recreation center, the project evolved to include re-routing utilities serving a Nuclear Physics Laboratory, accommodating constrained site conditions, and later extending service to a new arena. The work required careful coordination to maintain uninterrupted service to research operations while enabling long-term campus growth.

Challenge

Existing steam and condensate lines serving the Nuclear Physics Laboratory were routed through a building scheduled for demolition to make way for a new recreation center. Limited underground routing options were available due to existing utilities and site constraints, requiring creative above-ground routing solutions.

Engineering Approach

RPA Engineering implemented a phased, adaptive design approach that prioritized operational continuity. Phase 1 focused on rerouting existing steam and condensate services to protect laboratory operations. Phase 2 extended new services to support the new recreation center and, later, a new arena, incorporating updated utility demands and routing constraints.

Highlights

• Critical Utility Rerouting: Designed a new steam and condensate route to maintain continuous service to a Nuclear Physics Laboratory then a changeover or service for minimal interruption so then the building could be demolished.
• Complex Above-Ground Routing: Due to limited underground options, utilities were routed above grade, across a generator building roof, through a passageway between buildings on a sloped incline, and into the laboratory, requiring careful coordination with existing structures.
• Stress & Support Engineering: Performed detailed pipe stress analysis and designed custom pipe guides, supports, and anchors as well as challenges with proper trapping of condensate.
• Subsurface Utility Coordination: Oversaw a civil consultant performing Subsurface Utility Evaluation (SUE) to identify congested underground utilities and inform routing decisions for Phase 2 extensions.
• Utility Expansion and Load Reassessment: Re-evaluated pipe sizing and system capacity to support extended steam and condensate service to a new arena as campus development plans evolved.

Outcome and Impact

The project successfully maintained uninterrupted steam service to a critical research laboratory while enabling demolition and new construction on a constrained campus site. By combining creative routing strategies, rigorous stress analysis, and phased implementation, RPA Engineering delivered a flexible steam and condensate infrastructure capable of supporting multiple new facilities.