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, &cD. Burgess, 1853 - 136 σελίδες |
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Αποτελέσματα 1 - 5 από τα 21.
Σελίδα 43
... marked dbs at B. Divide the arc bd , into any number of parts . Draw bt , perpendicular to ab . Draw the lines , 1.1.1 , 2.2.2 , & c . , through the points , 1 , 2 , 3 , & c . , on the column , to intersect the line ch , at the points ...
... marked dbs at B. Divide the arc bd , into any number of parts . Draw bt , perpendicular to ab . Draw the lines , 1.1.1 , 2.2.2 , & c . , through the points , 1 , 2 , 3 , & c . , on the column , to intersect the line ch , at the points ...
Σελίδα 49
... marked 12 on the scale of circles , and a circle be described with the radius AB , DE will be the cord of a th part of the circumference , and will prick off a regular polygon of 12 sides in it . To reduce or enlarge the Area of a ...
... marked 12 on the scale of circles , and a circle be described with the radius AB , DE will be the cord of a th part of the circumference , and will prick off a regular polygon of 12 sides in it . To reduce or enlarge the Area of a ...
Σελίδα 50
... marked 4 or 5 on the scale . To take the Square Root of a Number . - The line across the slider being set to the number upon the scale of plans , open the points A and в to take the number from any scale of equal parts , then the points ...
... marked 4 or 5 on the scale . To take the Square Root of a Number . - The line across the slider being set to the number upon the scale of plans , open the points A and в to take the number from any scale of equal parts , then the points ...
Σελίδα 55
... marked 1 , the third 2 , and so on , and we have the following General Rule . To take off any number to three places of figures upon a diagonal scale . On the parallel indicated by the third figure , measure from the diagonal indicated ...
... marked 1 , the third 2 , and so on , and we have the following General Rule . To take off any number to three places of figures upon a diagonal scale . On the parallel indicated by the third figure , measure from the diagonal indicated ...
Σελίδα 60
... marked 40 in the figure ( plate 1 , fig . 2 ) , the angle BAC will con- tain 41 ° . $ 94 The Line of Rhumbs is a scale of the chords of the angles of deviation from the meridian denoted by the several points and quarter points of the ...
... marked 40 in the figure ( plate 1 , fig . 2 ) , the angle BAC will con- tain 41 ° . $ 94 The Line of Rhumbs is a scale of the chords of the angles of deviation from the meridian denoted by the several points and quarter points of the ...
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The American House Carpenters' and Joiners' Assistant Lucius D. Gould Περιορισμένη προεπισκόπηση - 2023 |
Συχνά εμφανιζόμενοι όροι και φράσεις
26 Spruce St angle rib beam beam compasses bevel breadth Cast Iron circle circumference colatitude constructed copy cube root cubic feet depth describe the arc diagonal diameter divided draw the lines edge Eighths elevation ellipsis extent will reach Figure floor frame girders given line given number gnomonic projection half hypothenuse inches instrument Invented and Drawn jack-rafters Join joists length in feet limb line of chords line of numbers line of sines Lith 26 Spruce meridian method of finding multiplied nail number of degrees number of equal pencil perpendicular plane Plate polygon primary divisions proportional purlin quadrant quarter girt quotient radius regular polygons represent right angles right line roof rule Rule.-Multiply screw secants sector Shows the method slider sliding soffit square root straight line stroke subdivision tangents thickness transverse distance triangle truss vernier scale weight