London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 138
ther part of themasonry, if the piers at a and b are kept in their places.Experiment Eleventh. — The semicircular arch [a be) {Jig. 28.) is of loin, span, and is28 ^.^ V ■/ ^^ composed of nine wooden voussoirs. The dimen-sions of the voussoirs arethe same as those used inthe ten preceding… … 118 Principles of Construction in Arches. slble, when standing on one foot on the crown, at c. In this ex-periment the dotted line c b lies quite within the voussoirs; andthe distance from f to g in the intrados is half an inch. Thepoint //, in the dotted line a e, is 2 in. distant from the point…
Architecture
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