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The corbel is one of the four devices that builders have developed for holding up the roofs or upper stories of houses . The other three are the post - and - lintel , the arch - and - vault , and the truss . Each device is best carried ...
Their most signal accomplishment was the development of the Gothic cathedral . ... The fully developed Gothic cathedral anticipated the modern skyscraper with its steel skeleton holding up separate panels of wall .
Vaulting was developed to a new pitch . Medieval architects learned to roof their churches with vaults of stone and tile , because wooden roofs were always catching fire from sparks or lightning . As the people had no means of getting ...
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LibraryThing ReviewCrítica de los usuarios - PDCRead - LibraryThing
This was originally written in 1962, and is therefore is a little dated. Sprague de Camp has written a book all about the different civilisations and the technologies that that invented or acquired ... Leer comentario completo
LibraryThing ReviewCrítica de los usuarios - Schmerguls - LibraryThing
5609. The Ancient Engineers, by L. Sprague De Camp (read 21 Jan 2019) This book was first published in 1963 and hence its bibliography includes nothing after that date. It undertakes to tell of the ... Leer comentario completo
One The Coming of the Engineers
Three The Mesopotamian Engineers
Four The Greek Engineers
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