The American House Carpenters' and Joiners' Assistant: Being a New and Easy System of Lines, Founded on Geometrical Principles, for Cutting Every Description of Joints, and for Framing the Most Difficult Roofs; to which is Added a Complete Treatise on Mathematical Instruments. Also, Mensuration, Tables of the Weights and Cohesive Strength of the Several Materials Used in the Construction of Buildings, &c |
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Page 15
... rib , to be placed over the line , ik , of the plan . The rib for the large opening is found by making the distances ... angle rib ; also , wr and wa are the semi - conjugate diameters of the ribs for the transverse branches , and ...
... rib , to be placed over the line , ik , of the plan . The rib for the large opening is found by making the distances ... angle rib ; also , wr and wa are the semi - conjugate diameters of the ribs for the transverse branches , and ...
Page 16
... rib at Fig . 2 , is a semicircle ; consequently , it raises one half mallest span , and the transverse and angle ribs will be a semi - ellipsis which drawn by two methods . One method is by ordinates , and transferring which is both ...
... rib at Fig . 2 , is a semicircle ; consequently , it raises one half mallest span , and the transverse and angle ribs will be a semi - ellipsis which drawn by two methods . One method is by ordinates , and transferring which is both ...
Page 21
... angle rib required . The dotted curve shows the bevel , or splay of the racket , to form the plane that shall coincide with the plane of the given brackets . Figure 2 Exhibits the method of finding the bracket for an internal right angle ...
... angle rib required . The dotted curve shows the bevel , or splay of the racket , to form the plane that shall coincide with the plane of the given brackets . Figure 2 Exhibits the method of finding the bracket for an internal right angle ...
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Common terms and phrases
26 Spruce St ABCD angle rib beam beam compasses bevel breadth Cast Iron circle circumference colatitude compasses copy cube root cubic feet depth describe the arc diagonal diameter divided draw the lines Drawn by L.D. edge Eighths elevation ellipsis extent will reach Figure floor frame Frustum girders given number gnomonic projection half hypothenuse inches Invented and Drawn jack-rafters joists L.D. Gould length in feet limb line of chords line of numbers line of sines Lith 26 Spruce MATHEMATICAL INSTRUMENTS meridian method of finding Multiply nail number of degrees number of equal paper perpendicular plane Plate polygon primary divisions proportional purlin quarter girt radius rafter represent right angles right line roof Rule screw secants Shows the method slider sliding soffit straight line STRENGTH OF MATERIALS stroke subdivision tangents thickness transverse distance triangle truss vernier scale weight