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abutments adjoining ęsthetic America appearance approach appropriate arch architects architectural arrangement artistic balustrade beautiful better braced bridge Fig building built cables cantilever carried central century chords clear completed concrete connection construction contains cost crosses crown curved deck direction economical effect engineers erected face feet FIGURE floor foot framing girders greater heavy height illustrated inches iron lack length less lines loads London lower masonry material Memorial Bridge metal naturally ornamental outline panels Park piers points possible preferable principle produce proportion Proposed railing railroad reinforced ribs rings rise river road roadway shown side similar smaller spandrels spans springs steel stone street strength structure suitable surroundings suspension bridges tion towers tracks trusses upper usually viaduct walks walls Washington whole wide width York
Page 5 - To every thing there is a season, and a time for every purpose under the heaven...
Page 69 - CHORD OUTLINE The cantilever, like other large steel bridges, should have a graceful outline if beauty is desired, and curved chords are preferable artistically to straight ones. Curves may be used for either one or both chords, as conditions will allow. The center span bottom chord may be made a segment of a circle and the bottom chord of the two adjoining anchor spans made to correspond with the middle one, as in the Villefranche bridge (Fig.
Page 57 - Like other kinds, they must depend chiefly on their outline for their appearance, and their form should, so far as possible, show their purpose and action. If a wrong outline is chosen, no amount of...
Page 43 - It would seem that any structure designed on lines of true economy, with the utmost simplicity and with the fewest number of parts, was a beautiful thing.
Page 25 - A solacing memory will always be preserved for the aweinspiring literature" on the subject "which has been written to show what splendid mathematical gymnastics can be performed in its treatment. But it can be confidently asserted that no single structure has ever been made a shade better for its purpose, or more creditable in its design, by the use of the method.
Page 183 - In the center of the bridge is an open passage connecting the roadway with the walks, the whole arrangement forming an arcade. The...
Page 107 - The segment is the correct constructive form exhibiting greatest strength, but the semicircle and ellipse are acceptable for their fine appearance. Ellipses seem to be weak when they have too small a rise, the flat central part contrasting with the greater curvature at the springs.
Page 47 - The modern method is to make separate photographs of the site and the design to the same scale, and after placing the proposed bridge in the landscape view, to rephotograph the combination. Features of the design which fail to conform with the surroundings will then appear, and changes can be made until it is satisfactory.