>>Martin Weaver's dire warnings about
excavating next to an adjacent building and disturbing the "bulb of
pressure" that supported the building.<<

It is surprising what actually holds buildings up. We might think it is 
steel, and granite, and mortar. But really it is "bulbs of pressure" and 
things even more ethereal, like trust. Trust? Yes, that "social 
adhesive" that assures you can count on people to behave in certain 
ways. For example, a trust that someone would not purposely fly an 
airplane into a building is what held up the twin towers, until 9/11 
when the trust failed and the towers promptly fell down.

John
www.HistoricHomeWorks.com

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