. A textbook on mechanical and electrical engineering . Fig. 30 73 PRACTICAL PROJECTION 15 of regular prisms where the cutting plane is parallel tothe ends of the prism. Fig. 31 represents a diagonalsection of the cube, the measurements of which will beapparent to the student from an inspection of the 32 is an oblique section, in which but three sides of thecube are intersected by the cutting plane; in this figure,the full view of the sectional surface is projected. Fig. 33represents a section taken at a still different angle and posi-tion of the cube. ]]lien a cutting plane passe
. A textbook on mechanical and electrical engineering . Fig. 30 73 PRACTICAL PROJECTION 15 of regular prisms where the cutting plane is parallel tothe ends of the prism. Fig. 31 represents a diagonalsection of the cube, the measurements of which will beapparent to the student from an inspection of the 32 is an oblique section, in which but three sides of thecube are intersected by the cutting plane; in this figure,the full view of the sectional surface is projected. Fig. 33represents a section taken at a still different angle and posi-tion of the cube. ]]lien a cutting plane passes through a solidhaving parallel sides, in anj direction that causes it to inter-sect both of those parallel sides, those sides are shown in any. Fig. 31 viezv by parallel lines. Note that in the sectional views ofFig. 33 the opposite edges of the surfaces are defined byparallel lines; thus, since AB and CD are parallel to eachother in the plan of the cube in Fig. 33, so A B and CDare in the same relation to each other in the side elevation;also, A B and C D in the full view of the section. Thesame is also true oi A C and B D, as may be seen from acomparison of the views. 79. Ho^v the Cutting Plane Is Represented.—Whenthe cutting plane is shown on edge in a view, it is 15 PRACTICAL PROJECTION 73 usually indicated by the same kind of a broken-and-double-dotted line used for the center line and the axial line. Theuse of this line for these three purposes is somewhat puzzlingto the beginner; but as the student is now able to read pro-jection drawings, he can readily determine which purposethe line is intended to serve. It is customary, however, asalready mentioned, when center and axial lines are used, tomark them as such by nea
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmechani, bookyear1902
