ヴィラール・ド・オヌクールの示すシトー会教会堂平面の基礎図形と構成法について : ヴィラール・ド・オヌクールのシトー会教会堂平面(2)

抄録

A schematic plan of a Cistercian church in the sketchbook of Villard de Honnecourt has long been considered as a manifestation of the method "ad quadratum". This view is based upon "square" found in the plan of Villard de Honnecourt. But the rectangle of the crossing of the plan is not "square", but slightly flatter than square. This article clarified that the Cistercian church plan of Villard was "opus ad triangulum". Rectangles composing Villard's plan have a rapport of a heigt and a base of an equilateral triangle. Comparing other squares and rectangles in the sketchbook with the rectangles of the Cistercian plan can show that this is the case. Villard's Cistercian church plan is composed by simple multiplication of this rectangle of the crossing, based upon an approximative method of making an equilateral triangle. This paper also supposes the process of making this plan.