抄録
First, I took up and refined the tas-de-charge or the fill-behind-hunch theory of V. Sabouret and P. Abraham, and divided the rib vault into three parts : tas-de-charge, fill behind hunch and real vault. Next, I discussed the proportional relation among the height of fill, rise of vault and transversal span of bay. Last, I examined the relation between the fill and the removal of rib centering, after which the real vault was constructed according to the well-known passage in Suger's De Consecratione. I concluded that the filling was carried out before the rib centering and that it played an important role in fixing the rib skeleton or in constructing the real vault.
