Thornton, CO
Thornton Natatorium
Scope/Solutions
The Thorton recreation complex includes a gymnasium, racket ball court, and a natatorium with two large pools and spa. The north masonry exterior wall of the natatorium was experiencing severe efflorescence and while the relative humidity in the natatorium was low, condensation was occurring in the exterior walls. SGH investigated the cause of the building enclosure issues.
Highlights of SGH’s work on this project include the following:
- Performed water testing to recreate leaks and disassembled roof and wall sections to understand the construction details
- Concluded that deficiencies in the natatorium roof air barrier and seal allowed moist pool air to flow into the cavity of the brick masonry wall and through the roofing causing mildew growth within the roof system, which is composed of asphalt shingles in sloped areas and a ballasted rubber membrane in flat areas
- Designed new roof system with a structural air/vapor barrier, thermally broken structural blocking, and venting for a cavity space under shingles
- Determined that deficiencies in air barrier construction and in the various mechanical systems caused a positive air pressure condition that contributed to moisture problems
- Prepared plans and specifications for repairs and provided full-time monitoring during construction
- Provided technical support to the owner to assist in recovering damages
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Project Summary
1996
Completion Date
Solutions
Repair & Rehabilitation
Services
Building Enclosures | Applied Science & Research
Markets
Culture & Entertainment
Client(s)
City of Thornton, CO
Specialized Capabilities
Building Science | Roofing & Waterproofing | Environmental Simulations
Key team members
Additional Projects
West
VillaSport Athletic Club and Spa
VillaSport, a premier health club facility, offers the latest in programs, equipment, and services. The health club draws in members with an enjoyable design that includes an open floor plan and natural light. SGH was the structural engineer of record for the building and many of the site elements.
West
Bay Area Rapid Transit (BART), East Station Plaza, Danseurs (Dancing Ladies)
With the fountain located only 0.6 mi northeast from the Hayward fault line, SGH suggested mounting the 16 ft tall, 1800 kg statues on base-isolated platforms to limit damage during a design earthquake.