A treatise on architecture and building construction . Fig. 44. This kind of an enclosure isusually built against the side ofanother structure, already erected—hence its name Ican-to—and itsroof often has to receive and carrythe drip from the main roof above,as well as its own collection of moistiire. The single-pitchroof, however, is also frequently used over verandas, and atticdormer-windows, and in other minor positions on the mainbuilding. Fig. 44. l.*5I3. When the pitch falls in both directions from thecenter of the building, we have what is known as a double-pitch, or ijable, roof, as sh
A treatise on architecture and building construction . Fig. 44. This kind of an enclosure isusually built against the side ofanother structure, already erected—hence its name Ican-to—and itsroof often has to receive and carrythe drip from the main roof above,as well as its own collection of moistiire. The single-pitchroof, however, is also frequently used over verandas, and atticdormer-windows, and in other minor positions on the mainbuilding. Fig. 44. l.*5I3. When the pitch falls in both directions from thecenter of the building, we have what is known as a double-pitch, or ijable, roof, as shown in Fig. 45, the plan of which §9 CARPENTRY. 67 name. is the rectangle/^/;/. This form of roof derives itsfrom the shape of its ends, the tri-angle ab c being called a gable, oneof which exists at each end of thebuilding. The upper edge of theroof be is called the ridge, andthe lower edges, on each side, asat c d, are called the eaves. In theplan fi and gh are the eaves,while Jk shows the position of theridge be. In Fig. 40 {a) is shown in perspective a squarestructure, with a gable on each ofthe four sides. The ridges of thesegables intersect at o, while the ^ ->i eaves intersect in pairs at a, c and e ; the line of intersection o c betweenthe pitches dc and be, is called avalley. At {p) is shown a plan ofthis roof, in which the lines d hand/Z mark the positions of theridges, the lines o a, o e, o e, andog show the intersections of theslanting surfaces, called valleys,while the dotted outline g i a isthe form of the elevation of thegable over g h a. 135. In Fig. 47 {a) is illus-trated a rectangular building witha roof pitched back fr
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Keywords: ., bo, bookcentury1800, booksubjectarchitecture, booksubjectbuilding
