Mechanical exercises, or, The elements and practice of carpentry, joinery, bricklaying, masonry, slating, plastering, painting, smithing, and turning . : X2 a 4 -f 1976 9^21 ^s#^ -WplM 1 1 1 1 1 1 1 1 1 1 ; 1 1 1 1 1 1 1 1 1 1 1 I 1. j:afuf,Ti7lZ>/fs/{cJJ£,>/.-J/u,?L/ro//w/ BRICKLAYING. 245 PLATE IV. Fig. 1 Part of the upright of a Wall, at thereturn, laid with Flemish bond. Fig. 2 a Scheme Arch, being 2 bricks high. Fig. 3 a Semi-circular Arch 2 bricks high. Fig. 4 a Straight Arch, which is usually theheight of four courses of brick work, the man-ner of descr
Mechanical exercises, or, The elements and practice of carpentry, joinery, bricklaying, masonry, slating, plastering, painting, smithing, and turning . : X2 a 4 -f 1976 9^21 ^s#^ -WplM 1 1 1 1 1 1 1 1 1 1 ; 1 1 1 1 1 1 1 1 1 1 1 I 1. j:afuf,Ti7lZ>/fs/{cJJ£,>/.-J/u,?L/ro//w/ BRICKLAYING. 245 PLATE IV. Fig. 1 Part of the upright of a Wall, at thereturn, laid with Flemish bond. Fig. 2 a Scheme Arch, being 2 bricks high. Fig. 3 a Semi-circular Arch 2 bricks high. Fig. 4 a Straight Arch, which is usually theheight of four courses of brick work, the man-ner of describing it will be shown in the follow-ing figure. Fig. 5, To draw the Joints of a Straight Arch,Let AB be the width of the aperture; describean equilateral triangle A B C upon this width;describe a circle around the point C equal to thethickness of the brick. Draw DE parallel toA B at a distance equal to the height of fourcourses, and produce C A and CB to D and the straight edge of a rule from C to D, andwith a pair of compasses, opened to a distanceequal to the thickness of a brick, cross the lineD E at F, removing the rule from the points Cand D. Place the straight edge against thepoints C and F, and with the same extent,
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Keywords: ., bookcentury1800, books, booksubjectcarpentry, booksubjectgeometry
