A glossary of terms used in Grecian, Roman, Italian, and Gothic architecture (1845)
Parker, John Henry, 1806-1884 · Oxford : J. H. Parker · leaf 331
gon which it is to be placed, and any attempt to notice all thevarieties would far exceed the limits of this work. The mainportions of the framing, which in most cases are placed atregular intervals, are called trusses, principals, or a pair of prin-cipals ; these, in ornamental open roofs, are the…
Architecture
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