Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 379
The term geometrical is applied to stair-ways having any kind of curve for a plan.The rails over the steps are made con-tinuous from one story to another. The resulting winding ortwisting pieces are called wreaths. Wreaths. The construction of wreaths is based on a fewgeometrical problems—namely,… … K^
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.