Grunau Metals Meets Challenges, Aggressive Schedule for Johnson Building project overview Grunau Metals was asked to build stair towers, an ornate handrail system, exterior ornamental glass-top canopies and other specialty metals for the Johnson Building. situation When Johnson Bank began the construction of an office building to house three separate family enterprises in Racine, Wis., they envisioned an architecturally distinct, environmentally-friendly building to house its many services. Grunau Metals contributed to the building's aesthetic design with an architectural-class stairwell built in a box-shaped design. However, the stair towers proved challenging because the structural components that needed to be connected to the existing pre-cast concrete conflicted with the glass stai

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