University of Minnesota Ionwave #01-000-25-3505

Design-build remediation of Nils Hasselmo Hall windows and curtainwall

The University of Minnesota is seeking a design-build contractor to remediate leaking and deteriorated windows at Nils Hasselmo Hall on its Twin Cities campus. - Government buyer: Board of Regents of the University of Minnesota; University of Minnesota Twin Cities Facilities Management and Capital Project Management are also referenced. - Scope: West-elevation work at 12 ground-level punched-window openings and 12 Level 7 curtainwall daylight openings. Replace glazing and gaskets, remediate pressure bars and sealant joints, and complete related masonry and interior-finish work. Retain existing aluminum frames where specified; salvage and reinstall applicable exterior stone, interior sills, and shades. - Level 7 details: Replace vision and spandrel glass while retaining the existing aluminum grid and spandrel insulation backing; review, clean, and reseal internal zone dams and primary sealant joints. - OEMs and named technical providers: Alpana is identified with the existing curtainwall system; Wausau is referenced for compatible gasket components; and Viracon was consulted regarding glass makeup. The materials also name WL Hall and BWBR as study/report providers. No OEM is mandated for the replacement work. - Requirements: Design-build contractor provides engineering, permit and shop drawings, procurement, installation, testing coordination, and a joint 10-year system warranty. The work must meet AAMA GS-001, minimize disruption to active research, classroom, and administrative operations, and include dust containment, interior protection, access coordination, and engineered staging. Contractor is responsible for retesting and corrective work if initial testing fails. - Hazardous materials: A limited asbestos survey found no asbestos-containing materials in sampled work-area materials. Dust-minimizing methods, including misting and keeping materials wet during renovation, are recommended. - Budget and schedule: Project budget is $360,000. Work is anticipated to proceed in late 2026, with substantial completion required by late spring 2027.

Description

The University of Minnesota is seeking a qualified contractor to provide design-build lump-sum services for targeted window remediation on the west elevation of Nils Hasselmo Hall. Work includes glazing replacement, gasket and sealant repairs, and exterior building-envelope stabilization, with associated engineering, drawings, procurement, logistics, field-testing coordination, and warranty coverage. The scope identifies ground-level punched windows and level 7 curtainwall openings, and includes accessing concealed sealant joints and protecting and restoring applicable interior finishes. Responses are due November 9, 2026, at 2:00 PM CT.

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