Shaw's Civil Architecture: Being a Complete Theoretical and Practical System of Building ... Also, A Treatise on Gothic Architecture, with Plates, &c, by Thomas W. Silloway and Geoorge M. Harding ...

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J. P. Jewett and Company, 1852 - 191 páginas
 

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Página 10 - Come, let us build ourselves a city, and a tower with its top in the heavens, and let us make a name for ourselves, lest we be scattered abroad upon the face of the whole earth.
Página 76 - ... and suppose the rays to proceed from the right to the left hand of the object, and parallel to a vertical plane which is inclined at an angle of forty-five degrees with the elevation of the object ; then it is plain, that since the angle of reflection is equal to the angle of incidence, the greatest part of the rays which fall upon the horizon will...
Página 40 - The Measure of an angle, is an arc of any circle contained between the two lines which form that angle, the angular point being the centre ; and it is estimated by the number of degrees contained in that arc.
Página 40 - To divide a given line AB, into any proposed number of equal parts. From A, one end of the line, draw A c, making any angle with AB ; and from B, the other end, draw B d, making the angle AB d equal to BA c.
Página 16 - Or could the Columns be otherwise than split into distinct shafts, when they were to represent the stems of a clump of trees growing close together ? On the same principles...
Página 40 - VII. Through a given point, C, to draw a line parallel to a given line, A B. 1.
Página 167 - ... observed the expansive power of water, not only in congelation, but also in evaporation, must be well aware that when it meets with any foreign body, obstructing its escape, as oil painting, for instance, it immediately resists it, forming a number of vesicles or particles, containing an acrid lime-water, which forces off the layers of plaster, and frequently causes large defective patches, not easily to be eradicated. Perhaps, in general cases, where persons are building on their own estates,...
Página 28 - But since the friction or adhesion which resists the side motion, is usually greater than one third of the pressure, it seldom happens that the whole thrust of the arch is so oblique as not to produce a sufficient vertical pressure, for securing the stability in this respect ; and it is only necessary to make the pier heavy enough to resist the force which tends to overset it. It is not, however, the weight of the pier only, but that of...
Página 40 - Hexagon, of six sides; a Heptagon, seven; an Octagon, eight; a Nonagon, nine ; a Decagon, ten ; an Undecagon, eleven ; and a Dodecagon, twelve sides.
Página 39 - A Right angle is that which is made by one line perpendicular to another. Or when the angles on each side are equal to one another, they are right angles.

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