Gothic architecture in France, England, and Italy . Fig. 9. much for this reason as for that of strengthening thelines of intersection that ribbed vaulting- was invented. RibandIt was impossible to make an even junction by simply Nukingbringing the curved surfaces together without so muchwinding and twisting as to be dangerous: but it waseasy enough to build ribs with a regular curve whichwould be both sightly and strong, and the panels orvaulting surfaces could be fitted between them and reston them securely in spite of their winding surfaces. 3—2 36 THE GOTHIC VAULT [CH. Ill Rib and panel va
Gothic architecture in France, England, and Italy . Fig. 9. much for this reason as for that of strengthening thelines of intersection that ribbed vaulting- was invented. RibandIt was impossible to make an even junction by simply Nukingbringing the curved surfaces together without so muchwinding and twisting as to be dangerous: but it waseasy enough to build ribs with a regular curve whichwould be both sightly and strong, and the panels orvaulting surfaces could be fitted between them and reston them securely in spite of their winding surfaces. 3—2 36 THE GOTHIC VAULT [CH. Ill Rib and panel vaulting Henceforth vaulting was not as heretofore a systemof intersecting surfaces, but a system of ribs and panels ;of arches and filling-in ; the ribs forming a framework orskeleton, and the panel being a covering or ceiling fitted. TSk =U 12. IQC? ^ A <zlro3i9?erseSti&~ C 6ross9&dg£,D J&nqhiubLnat oe- Fig. io. in between them, possessing, however, owing to itsarched form an independent strength of its own. The system of constructing vaults on the new systemis explained by Fig. io where one bay is shown with theskeleton of ribs only and others with the panel filled in. CH. Ill] THE GOTHIC VAULT 37 One advantage of the new construction was that it Economydispensed with a great part of the centering required for ingthe Roman vault. To construct a vault without ribs itis necessary to form centering under the whole surface :framed centres must be put in the line of the groins andthe transverse arches, with others between, on whichlagging of planking or slats is laid to receive thevault of stone, brick, or concrete. But in ribbed vaultingcentering is only necessary under the ribs, and theashlaring of the panel can be filled in, course by course,on a moveable piece of wood resting on the centering ofthe
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Keywords: ., bookauthorjacksont, bookcentury1900, bookdecade1910, bookyear1915
