Belmont Library and Fieldhouse, Calgary, Alberta
Location: Calgary, Alberta
Architect: GEC Architecture
Owner Operator: The City of Calgary / Calgary Public Library
Construction Manager: CANA Group of Companies
Acoustic Assessment for a New Mixed-Use Library and Fieldhouse Facility
HGC Noise Vibration Acoustics was retained to provide acoustical design review for the new Belmont Library and Fieldhouse, a 12,110 m² mixed-use civic facility under construction in southwest Calgary. The $71.8 million development includes a 118,000 ft² multi-sport fieldhouse containing an artificial turf field, viewing areas, dressing rooms, and support spaces, as well as a 10,000 ft² public library with children’s areas, seating and collections, meeting rooms, and an outdoor learning space.
Understanding Mixed-Use Acoustic Conditions and Design Needs
The building’s program includes a mix of quiet, conversational, and high-activity zones, requiring careful attention to sound transfer paths and interior noise buildup. Sound intrusion from fieldhouse activity into the library is a key consideration due to sensitive uses such as reading areas and meeting rooms located adjacent to active recreation spaces. To understand potential acoustical issues, HGC reviewed anticipated activity within the fieldhouse, including airborne and impact noise from sports play. Ball impacts on the shared demising wall between the fieldhouse and library were identified as a primary concern. Mechanical systems above quiet library spaces were also expected to influence background sound levels and required detailed evaluation.
ASHRAE Noise Criterion and Acoustical Design Measures
Because no quantitative acoustic limits were provided for the project, HGC established performance targets based on ASHRAE Noise Criterion values for background sound and on suitable reverberation times for library, lobby, and fieldhouse spaces.
The mechanical room’s location above library functions introduces sound flanking paths for equipment noise and vibration that must be addressed through appropriate mechanical and architectural design measures.
Large volumes such as the fieldhouse and lobby tend to generate long reverberation times without acoustic treatment, affecting clarity of speech and the accumulation of activity noise. HGC evaluated the need for acoustical finishes in these areas and their optimal placement to achieve suitable conditions without obstructing the architectural intent.
Acoustical Consulting Services Provided by HGC
- Architectural Acoustics Review
- Mechanical Noise and Vibration Control
- Sound Isolation and Flanking Path Analysis
- Reverberation Control Recommendations
- Background Sound Level Criteria (ASHRAE NC)
