Elementary principles of carpentry ... : ; to which is added an essay on the nature and properies of timber (1840)
Tredgold, Thomas, Barlow, Peter · John Weale · leaf 328
s more probable that these weights were expressly used for the purpose of giving stability to the structure ; * and the old architects calculated , and , experience shews , calculated correctly , on the balance being established between the lateral and vertical thrusts and resistances , of which… … The timber roof is built entirely of chesnut , and,is framed with a truss over each pier , and one over each window . The truss over the pier rests on a stone projection in the spandril of the vault , built out from the wall , which would otherwise be weak at this point , being against the passage…
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