it was KPF's entrant for the bank of southwest tower competition. this is murphy/ jahn's entrant:
the figures are totally inaccurate on that SSP entry. 500 floors?
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Sprawling on the fringes of the city in geometric order, an insulated border in-between the bright lights and the far, unlit unknown. (Neil Peart)
I think that the name "Houston Tower" refers to more than one building. A Google search for the words "Krahl", "Houston", and "Tower" shows several pages that talk about it and several mention that it would have had 500 floors.
The Mile plus tall Houston Tower was an engineering study. It really should be in the vision category like the Illinois.
I'd know, I'm the one who uncovered the thing, along with a lurker. The digram in the article is misleading. The Houston Tower was a bundled tibe design, but the modules were triangular. Everything in the tower was based on the triangle because of its superior strength.
The Bank of the Southwest competition was arguably the top US design project around 1981-82. There was an entire book about it.
The real tragedy is that the Bank of the Southwest site remains an underutilized surface parking lot, smack dab in the center of Downtown Houston...maybe if oil keeps rising there will be some developer/dreamer in H-Town to do something with that block.
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Truth is dreams that don't come true, and nobody prints your name in the paper till you die...(Tennessee Williams)