A Treatise on Civil EngineeringJ. Wiley & Son, 1873 - 513 pages |
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Page 4
... the various purposes of the engineer and architect . 6. Sienite , Porphyry , and Green - stone , from the abun- dance of feldspar which they contain , are often designated 4 CIVIL ENGINEERING . 3-16 Silicious Stones STONE.
... the various purposes of the engineer and architect . 6. Sienite , Porphyry , and Green - stone , from the abun- dance of feldspar which they contain , are often designated 4 CIVIL ENGINEERING . 3-16 Silicious Stones STONE.
Page 5
Dennis Hart Mahan. dance of feldspar which they contain , are often designated as feldspathic rocks . For durability , strength , and hard- ness , they may be placed in the first rank of silicious stones . 7. Sienite consists of a ...
Dennis Hart Mahan. dance of feldspar which they contain , are often designated as feldspathic rocks . For durability , strength , and hard- ness , they may be placed in the first rank of silicious stones . 7. Sienite consists of a ...
Page 6
... contains but little mica . The quality of granite is affected by the foreign minerals which it may contain ; hornblende is said to render it tough , and schorl makes it quite brittle . The protoxide and sul- phurets of iron are the most ...
... contains but little mica . The quality of granite is affected by the foreign minerals which it may contain ; hornblende is said to render it tough , and schorl makes it quite brittle . The protoxide and sul- phurets of iron are the most ...
Page 9
... contain a certain proportion of clay , or of magnesia , yield , on calcination , those cements which , from their posses- sing the property of hardening under water , have received the various appellations of hydraulic lime , water lime ...
... contain a certain proportion of clay , or of magnesia , yield , on calcination , those cements which , from their posses- sing the property of hardening under water , have received the various appellations of hydraulic lime , water lime ...
Page 10
... contain ; the presence of clay injures the stone , particularly when , as sometimes hap- pens , it runs through the ... contained in the mass , made in sawing or splitting it . 26. Lumachella Marble . This is obtained from a lime- stone ...
... contain ; the presence of clay injures the stone , particularly when , as sometimes hap- pens , it runs through the ... contained in the mass , made in sawing or splitting it . 26. Lumachella Marble . This is obtained from a lime- stone ...
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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.
Page 517 - SELECTED FRUITS, From Downing's Fruits and FruitTrees of America. With some new varieties, including their Culture, Propagation, and Management in the Garden and Orchard, with a Guide to the selection of Fruits, with reference to the Time of Ripening. By Chas. Downing. Illustrated with upwards of four hundred outlines of Apples,. Cherries, Grapes, Plums, Pears, &c. 1 vol., 12mo.., .$2'50" 6 » LOUDON'S GARDENING FOR LADIES, AND COMPANION TO THE FLOWER-GARDEN.
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.