Gothic architecture in France, England, and Italy . Fig. 90. the diagonal rib (Fig. 90). In English vaulting, on thecontrary, the beds of the ashlaring in the panels are laidsquare with a line more or less nearly bisecting thepanel, and they therefore meet at an obtuse angle againstthe diagonal rib (Fig. 91). In setting out a Frenchvault the transverse or the wall-rib would be dividedinto so many equal parts to mark the width of the ashlar CH. XIl] EARLY ENGLISH 213 courses, and the diagonal would be divided into the same Differencenumber of parts, but these would each be longer than Frenchtho
Gothic architecture in France, England, and Italy . Fig. 90. the diagonal rib (Fig. 90). In English vaulting, on thecontrary, the beds of the ashlaring in the panels are laidsquare with a line more or less nearly bisecting thepanel, and they therefore meet at an obtuse angle againstthe diagonal rib (Fig. 91). In setting out a Frenchvault the transverse or the wall-rib would be dividedinto so many equal parts to mark the width of the ashlar CH. XIl] EARLY ENGLISH 213 courses, and the diagonal would be divided into the same Differencenumber of parts, but these would each be longer than Frenchthose on the direct arches, because the diagonal line is Englishlonger. If these divisions are projected (Fig. 90) from vaultsthe elevation on to the transverse and diagonal lines inplan, lines drawn to join the points so marked will give. Fig. 91. the beds of the ashlaring of the panel, which will ofcourse be parallel to the ridge lines, because the divisionsof the two arches are equal in number though not inlength. On the other hand, in setting out an Englishvault the divisions on the diagonal are made of the The Fn 1 -h same length as those on the direct arches, and therefore vault*there will be more divisions marked on the diagonal rib 2i4 EARLY ENGLISH [ch. xii Difference than on the others because it is longer. ConsequentlyFrench if the divisions are projected (Fig. 91) and the pointsEi?iish joined in the same way as before, it will be found thatvaults the Deds 0f the ashlaring lie obliquely and not parallelto the ridges, because the divisions are equal in lengthbut not in number. In the French vault the direct ribsand the diagonal all receive the same number of courses;in English vaulting the diagonal receives more coursesthan the others. Consequently at the crown of the vaultthe French ashlar courses meet natura
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Keywords: ., bookauthorjacksont, bookcentury1900, bookdecade1910, bookyear1915
