Ruskin, John, 1819-1900 · Boston : Aldine Book Publishing Co. · leaf 74
he right construction of piers; then (C) to seehow a wall is supported by buttresses, and to get a generalidea of buttresses and the right construction of buttresses.This is surely very simple, and it is all we shall have to dowith walls and their divisions. § v. 2. Roofs.—A roof is the covering of… … Fig. 1. difficulty here in the nomenclature, for an arched roof over anarrow space has (I believe) no name, except that which be-longs properly to the piece of stone or wood composing sucha roof, namely, lintel. But the reader will have no difficultyin understanding that he is first to consider…
Architecture
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