A Treatise on Civil Engineering |
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Page 4
... causes of destructibility . I. STONE . 3. The term Stone , or Rock , is applied to any aggregation of several mineral substances . Stones , for the convenience of description , may be arranged under three general heads - the silicious ...
... causes of destructibility . I. STONE . 3. The term Stone , or Rock , is applied to any aggregation of several mineral substances . Stones , for the convenience of description , may be arranged under three general heads - the silicious ...
Page 6
... causing it to break up and disintegrate . Granite , gneiss , and sienite , differ so little in their essen- tial qualities , as a building material , that they may be used indifferently for all structures of a solid and durable charac ...
... causing it to break up and disintegrate . Granite , gneiss , and sienite , differ so little in their essen- tial qualities , as a building material , that they may be used indifferently for all structures of a solid and durable charac ...
Page 10
... causing , by their chemical changes , rapid disintegration . Among the varieties of impure carbonates of lime , the magnesian limestones , called dolomites , merit to be particu- larly noticed . They are regarded in Europe as a superior ...
... causing , by their chemical changes , rapid disintegration . Among the varieties of impure carbonates of lime , the magnesian limestones , called dolomites , merit to be particu- larly noticed . They are regarded in Europe as a superior ...
Page 13
... causes not fully as- certained , are found to possess very different degrees of dura- tion . This has been particularly noted in feldspathic rocks . As a general rule , those stones which are fine - grained , absorb least water , and ...
... causes not fully as- certained , are found to possess very different degrees of dura- tion . This has been particularly noted in feldspathic rocks . As a general rule , those stones which are fine - grained , absorb least water , and ...
Page 22
... cause the formation of triple hydro- silicates of lime , alumina , and magnesia , having all the characteristic properties of good hydraulic lime . 48. The hydraulic properties of the magnesian limestones of the United States were ...
... cause the formation of triple hydro- silicates of lime , alumina , and magnesia , having all the characteristic properties of good hydraulic lime . 48. The hydraulic properties of the magnesian limestones of the United States were ...
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Common terms and phrases
abutments action arch arranged artificial axis bars beam béton blocks bolts bottom breaking strain brick bridge caisson calcined carbonic carbonic acid cast iron centre chains chord clay common lime compression concrete connected construction cross curved cylinder deflection depth diagonal diameter durability embankment engineer experiments exterior feet flanch foundation fracture give hard heat Hodgkinson horizontal hot blast hydraulic cement hydraulic lime immersion joints kiln laid layer length limestones lower magnesia masonry mastic material ments metal mortar ordinary pieces piers pillars placed plates portion Portland cement pressure proportion puzzolana rails resistance ribs roadway Roman cement sand sheeting piles side slaked sleepers soffit soil solid span specific gravity spikes square inch steel strength structure struts suitable surface tensile tensile strength termed thickness timber tion transverse strain truss tube upper usually vertical voussoirs wall weight wire 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 419 - ... long. The fascines are laid in alternate layers crosswise and lengthwise, and the layers are either connected by pickets, or else the withes, with which the fascines are bound, are cut to allow the brushwood to form a uniform and compact bed. This method of securing a good bed for structures on a weak wet soil has been long practised in Holland, and experience has fully tested its excellence.
Page 175 - For the coping and top courses of a wall, the same objections do not apply to excess in length : but this excess may, on the contrary, prove favorable ; because the number of top joints being thus diminished, the mass beneath the coping will be better protected, being exposed only at the joints, which cannot be made water-tight, owing to the mortar being crushed by the expansion of the blocks in warm weather, and, when they contract, being washed out by the rain.