Concrete Exterior.

Concrete Exterior

The first dome had the membrane peeled off after construction and a thin layer of shotcrete was applied. This proved to be a very bad idea. Now, the Airforms used in construction are left in place and act as a single-ply roofing membrane.

Image by Monolithic via Monolithic Commons

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Historical Footage of Building the First Monolithic Dome with Excerpt from ‘Think Round’