em to use them.The great bodj^ of the community arepracticall3r excluded, and such publicinstitutions are thus conservative inmore ways than one. 1869.] Correspondence, 61 CORRESPONDENCE. It must be distinctly understood that we do not hold ourselves accountable for the opinions of correspondents.… … Answer.—Tn a span of forty feet wesee no objection, but we would notrecommend it for a greater span. The greatest amount of tension wouldbe on the horizontal rod a, which wouldbe relieved by the brace pieces or struts,b and c, which, while they sustain therafters in the middle of their…
Architecture
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