Project: Expansion Joint & Sealant Remediation - Below-grade Parking Structure
Location: Detroit, Michigan
Services: FEvaluation, Design Development, Construction Documents, Bidding, Field Quality Assurance
Summary:1300 East Lafayette Cooperative had been experiencing significant problems with their below-grade parking structure. StructureTec began evaluating the structure. The concrete slabs support above-grade traffic. These concrete slabs were originally designed with four expansion joints with an overlapping offset that would allow for structural movement and transfer of vehicle loads to supporting columns. This original design had failed and a previous repair system, consisting of steel framing, was also no longer able to provide the necessary structural support. StructureTec designed the removal of the original system and the repair system and new structural support systems at each expansion joint with reinforced concrete. All unsound concrete and steel were replaced or restored. A complete waterproofing system was also designed. StructureTec performed Field Quality Assurance during construction to ensure final project quality.
Full Profile: 1300 East Lafayette Restoration Project 

Project: Masonry Restoration & Weatherproofing - Six-Story Building - Ashman Court Hotel/Dow Corporation
Location: Midland, Michigan
Services: Evaluation, Design Development, Construction Documents, Negotiations, Field Quality Assurance
Summary: Acquest Realty Advisors was experiencing profuse leakage conditions at the Ashman Court Hotel, a property they managed for Dow Corporation. This fairly new facility had been experiencing leakage conditions since shortly after the original construction completion. After the original contract, the original architect, and an outside consultant had been unable to correct the problem. StructureTec then performed an evaluation and uncovered that there were actually three separate problems causing the leakage: exterior masonry/through-wall flashings at base of North Hotel Tower, perimeter at high-bay/low-bay junctures, and roof system interface with North Tower wall. The first two were both masonry flashing problems with significant deficiencies in laps and transitions. The roof problem was an expansion joint which did not allow enough movement. StructureTec designed a new stainless steel through-wall flashing system with a clear water repellant sealer applied to the masonry. For the roof, a reconstruction of the expansion joint and associated roof flashings was designed.
Full Profile: Acquest Realty Advisors, Inc. Restoration Project 

Project: Exterior Penthouse Wall Remediation - Dow Corporation Corporate Headquarters
Location: Midland, Michigan
Services: Evaluation, Methods Testing, Material Testing, Remediation Plan
Summary:Dow Corporation was experiencing highly visible staining on the Dow Center/2040 Building. Over the months, the staining had worsened and become visible from the road. StructureTec was contracted to perform an evaluation. StructureTec deduced that an incompatible sealer system had been applied to the masonry. The condition was not efflorescence but was staining due to a residue that had formed on the surface of the masonry. StructureTec performed various tests in order to develop methods, means, and procedures for removing the residue without damaging the masonry. Further tests were then performed to find a clear, water repellant sealer which would weatherproof the walls without staining, while allowing for the breathability of the masonry
Full Profile: CB Richard Ellis Restoration Project