An Elementary and Practical Treatise on Bridge Building: An Enl. and Improved Edition of the Author's Original WorkD. Van Nostrand, 1899 - 352 Seiten |
Im Buch
Seite 3
... position . Apply two rods to it obliquely upward , of a proper degree of stiffness , in the same vertical plane , and on opposite sides of the perpendicu- lar , a certain thrust exerted upon those rods , will pre- vent the descent of ...
... position . Apply two rods to it obliquely upward , of a proper degree of stiffness , in the same vertical plane , and on opposite sides of the perpendicu- lar , a certain thrust exerted upon those rods , will pre- vent the descent of ...
Seite 14
... position of Fig . 3 . This arrangement affords no side protection , and is not always admissible , on account of interference with the necessary open space beneath . DEDUCTIONS . XVI . We seem to learn from what precedes , that : ( 1 ) ...
... position of Fig . 3 . This arrangement affords no side protection , and is not always admissible , on account of interference with the necessary open space beneath . DEDUCTIONS . XVI . We seem to learn from what precedes , that : ( 1 ) ...
Seite 16
... b b ' , or suspended at c and d , at equal horizontal distances from a a ' , and from one another ; which latter position they will be re- garded as occupying in this instance . Or , the 16 BRIDGE BUILDING . Three Panel Trusses.
... b b ' , or suspended at c and d , at equal horizontal distances from a a ' , and from one another ; which latter position they will be re- garded as occupying in this instance . Or , the 16 BRIDGE BUILDING . Three Panel Trusses.
Seite 63
... of the chords are al- lowed to settle to positions below what they are brought to by the mere change in lengths of chords . Hence , the panels are ( generally ) thrown into TRAPEZOIDAL TRUSS . - DECUSSATION . 63 Decussation of forces, &c.
... of the chords are al- lowed to settle to positions below what they are brought to by the mere change in lengths of chords . Hence , the panels are ( generally ) thrown into TRAPEZOIDAL TRUSS . - DECUSSATION . 63 Decussation of forces, &c.
Seite 99
... position of bp , * in order to throw its load upon oa , whereby op and pa are rendered un- necessary . The weight borne by oa , therefore , instead of being 12w " , as indicated by the figure 12 at o , is 12w + 9w " , 21w " , = 3w ...
... position of bp , * in order to throw its load upon oa , whereby op and pa are rendered un- necessary . The weight borne by oa , therefore , instead of being 12w " , as indicated by the figure 12 at o , is 12w + 9w " , 21w " , = 3w ...
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Häufige Begriffe und Wortgruppen
abutment act by tension acting by thrust amount of action arch truss assumed beam bearing bolts cast iron centre cloth compression connecting block construction counter braces cross-section curve deflection depth of truss diagram diameter draw bridges Electric Engineers equal feet flanges force full load gives gonals greater half Hence horizontal action horizontal reach horizontal thrust Illustrated inclination joists king braces latter length less liable lifting force lower chord maximum stress maximum weight morocco movable load multiplied negative resistance nodes number of panels oblique members panel truss pieces portion posts pressure produced Prof proportion rail road represented respectively rivets Second edition side single track rail span splice plates square inch strain strength of materials tension material thickness tical timber tion trapezoidal Truss Bridge truss Fig upper chord uprights vertical reach weight of structure weight sustained whence width wrought iron