Mechanical exercises, or, The elements and practice of carpentry, joinery, bricklaying, masonry, slating, plastering, painting, smithing, and turning . ZiiidmTalJis7xta3/\JJqi-7t!t-Stif/iM^7irt-n. BRICKLAYING. 249 PLATE VI. Contains Groins of various kinds. Fig. 1 a semi-cylindric equi-angular groin, thecentre of one vault being generally boardedin without any regard to the other, and the otherboarded in afterwards. Fig. 2 a Cylindroidic-cylindric Groin, beingthe intersection of a cylinder with a cylin-droid. Fig. 3 a Cylindro-cylindric Groin, being theintersection of one cy
Mechanical exercises, or, The elements and practice of carpentry, joinery, bricklaying, masonry, slating, plastering, painting, smithing, and turning . ZiiidmTalJis7xta3/\JJqi-7t!t-Stif/iM^7irt-n. BRICKLAYING. 249 PLATE VI. Contains Groins of various kinds. Fig. 1 a semi-cylindric equi-angular groin, thecentre of one vault being generally boardedin without any regard to the other, and the otherboarded in afterwards. Fig. 2 a Cylindroidic-cylindric Groin, beingthe intersection of a cylinder with a cylin-droid. Fig. 3 a Cylindro-cylindric Groin, being theintersection of one cylinder with another, and thecylindro vault being the highest. Fig. 4 an inaprovement to the common foursided Groin, by Mr. Tappen, Architect, by raisingthe angles from an octagonal pier, instead of asquare one; by this means, the pier may bemade equally strong, by giving it more sub-stance, and cutting away the angles will bemore commodious for the turning any kindof goods round the corner; this may thereforebe looked upon as a very considerable improve-ment in the vaultings of cellars of convenience is not the only improvementwhich thi
Size: 1435px × 1741px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, books, booksubjectcarpentry, booksubjectgeometry
