Elementary principles of carpentry ... : ; to which is added an essay on the nature and properies of timber (1840)
Tredgold, Thomas, Barlow, Peter · John Weale · leaf 324
It would then appear that the horizontal concentric ribs are not introduced for ornament only , as forming the panel - heads of the vault , but are also intended to equalize the bearing of the vertical ribs . The lower one is upon the weakest part of the haunch , and is calculated , by its circular… … tower at either end of the Chapel ; the whole weight of the roof being so supported by the buttresses and towers , that if the above mentioned walls should be entirely taken away , the buttresses and towers alone remaining , the roof would still continue as firm as it is at this hour . ” There can…
e-rara · ETH-Bibliothek · No known copyright restrictions. Free to use for anything.
