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stone pergola

Stone Conversations : Archive 8 : Message 00283

From: Norman Watts <Norman_Watts@zzzzzzz>
Date: Mon, 31 Jan 2005 10:20:45 -0500
Subject: stone pergola

A well-heeled acquaintance of mine wants to build a stone pergola of
sorts in his backyard. The pergola is to be built from hand-split gray
granite. There will be four uprights placed in a square, with four
lintels across them. A box essentially. Each upright is to be 18 inches
square and 11 feet long. The same goes for the lintels. I assume one
pair of lintels will be on top of the other. The uprights are to be
placed on a reinforced concrete slab, one foot below grade.

I'm not sure if this a structurally sound idea. Any comments about the
stability, safety, etc of the structure are most welcome. I'm
concerned.


Norman Watts, Ph. D.
National Institutes of Health
50 South Drive, Rm. 1509
Bethesda, MD 20892-8025
Phone: (301) 402-3418
Fax: (301) 480-7629

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