A Treatise on Civil EngineeringJ. Wiley & Son, 1873 - 513 pages |
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Page ix
... Roadway 364 668. Vibrations 365 669. Means of Preserving the Chains . 366 670. Proofs of Suspension Bridges .. 366 671. Durability . 367 672. Suspension Bridge near Berwick , England 368 673. Menai Bridge 368 674. Fribourg Bridge . 370 ...
... Roadway 364 668. Vibrations 365 669. Means of Preserving the Chains . 366 670. Proofs of Suspension Bridges .. 366 671. Durability . 367 672. Suspension Bridge near Berwick , England 368 673. Menai Bridge 368 674. Fribourg Bridge . 370 ...
Page 279
... roadway which rests upon one or more arches , usually of a cylindrical form , the abut- ments and piers of the arches being of sufficient height and strength to secure them and the roadway from the effects of an extraordinary rise in ...
... roadway which rests upon one or more arches , usually of a cylindrical form , the abut- ments and piers of the arches being of sufficient height and strength to secure them and the roadway from the effects of an extraordinary rise in ...
Page 289
... roadway , they afford a more ample water - way under them , and their heads and spandrels offer a smaller surface to the pressure of the water during freshets than the full centre arch under like circumstances . The level of the ...
... roadway , they afford a more ample water - way under them , and their heads and spandrels offer a smaller surface to the pressure of the water during freshets than the full centre arch under like circumstances . The level of the ...
Page 297
... . 134 - Represents a cross section and elevation through the crown of Fig . 132 , showing the ar- rangement also of the roadway , footpaths , parapet , and cornice . In streams subject to freshets and ice , the up STONE BRIDGES . 297.
... . 134 - Represents a cross section and elevation through the crown of Fig . 132 , showing the ar- rangement also of the roadway , footpaths , parapet , and cornice . In streams subject to freshets and ice , the up STONE BRIDGES . 297.
Page 298
... roadway must be raised to the same level with their crests , security for the foundation , and economy in the construction demand that hollow or open piers be used instead of a solid mass of masonry . A construction of this kind ...
... roadway must be raised to the same level with their crests , security for the foundation , and economy in the construction demand that hollow or open piers be used instead of a solid mass of masonry . A construction of this kind ...
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Common terms and phrases
abutments action arch arranged axis bars beam béton blocks bolts bottom breaking strain brick bridge caisson calcined carbonic carbonic acid cast iron centre chord clay compression concrete construction counterforts courses cross curved cylinder deflection depth diameter dimensions durability effect embankment engineer excavation experiments exterior feet foundation fracture give hard heat Hodgkinson horizontal hot blast hydraulic cement hydraulic lime hydraulic mortar immersion interior joints kiln laid layer length less limestones lock lower masonry mastic material ments metal mortar ordinary piers pillars placed plates portion Portland cement pressure proportion purpose rails resistance roadway sand sheeting piles side slaked sleepers soffit soil solid specific gravity specimen spikes square inch steel stone strength structure struts suitable surface temperature tensile tensile strength termed thickness timber tion transverse strain truss upper usually vertical voussoirs wall weight wrought iron yield
Popular passages
Page 136 - ... elasticity ; and judging from its slow increase afterwards, I was persuaded that it had not come on by a sudden change, but had existed, though in a less degree, from a very early period.
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Page 347 - ... Harvard University. This he has laid out in a beautiful park to be free to the public, and with the name " The Serpent Mound Park." It is in a wild and picturesque country and must eventually be a favorite place of public resort. The Professor, who is an accomplished archaeologist, regards this as one of the most remarkable structures of its kind in the world. His description of the work is as follows: " The head of the serpent rests on a rocky platform which presents a precipitous face to the...
Page 422 - ... is increased to from six to twelve inches. The transversal joints are usually continuous, and those in the direction of the axis of the road break joints. In some cases the blocks are so laid that the joints make an angle of 45° with the axis of the roadway, one set being continuous, the other breaking joints with them.
Page 429 - Too great attention cannot be bestowed upon keeping the road-surface free from an accumulation of mud and even of dust. It should be constantly cleaned by scraping and sweeping. The repairs should be daily made by adding fresh material upon all points where hollows or ruts commence to form. It is recommended by some that when fresh material is added, the surface on which it is spread should be broken with a pick to the depth of half an inch to an inch, and the fresh material be well settled by ramming,...
Page 489 - ... culvert. If the water of the brook is generally limpid, and its current gentle, it may, in the last case, be received into the canal. The communication of the brook, or feeder, with the canal, should be so arranged that the water may be shut off, or let in at pleasure, in any quantity desired. For this purpose a cut is made through the side of the canal, and the sides and bottom of the cut are faced with masonry laid in hydraulic mortar.