An Elementary and Practical Treatise on Bridge Building: An Enl. and Improved Edition of the Author's Original WorkD. Van Nostrand, 1899 - 352 Seiten |
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Seite 5
... feet , where timber beams are employed . Hence , for bridges of a length of 12 to 14 feet , usually , nothing better can be employed than a structure supported by longitudinal beams , with their ends resting upon abut- ments or supports ...
... feet , where timber beams are employed . Hence , for bridges of a length of 12 to 14 feet , usually , nothing better can be employed than a structure supported by longitudinal beams , with their ends resting upon abut- ments or supports ...
Seite 8
... feet of opposite braces . These two methods are both feasible to a certain ex- tent , and in certain cases ; and , both involve expense . Under particular circumstances , it may be a question whether the former should not be resorted to ...
... feet of opposite braces . These two methods are both feasible to a certain ex- tent , and in certain cases ; and , both involve expense . Under particular circumstances , it may be a question whether the former should not be resorted to ...
Seite 9
... feet connected by a horizontal tie and with a vertical tie by which the beam is suspended at or near the horizontal tie , or the chord , as usually designated . = = For convenience of comparison , let bd = v , -1 , -ver- tical reach of ...
... feet connected by a horizontal tie and with a vertical tie by which the beam is suspended at or near the horizontal tie , or the chord , as usually designated . = = For convenience of comparison , let bd = v , -1 , -ver- tical reach of ...
Seite 16
... feet in length , the length of joists from the centre to the ends , would require cross - sections so great , to ... feet long , may be constructed with two cross beams , supported by two trusses with two pairs of braces each , with the ...
... feet in length , the length of joists from the centre to the ends , would require cross - sections so great , to ... feet long , may be constructed with two cross beams , supported by two trusses with two pairs of braces each , with the ...
Seite 68
... feet , the extension is equal to .00069 × 15 , .01035 ft . or , say = 3 inch . Hence , in a 7 panel truss , as represented in Fig . 13 , with hv , if the diagonals in the middle panel be slack , by inch in 15 feet of length , no ...
... feet , the extension is equal to .00069 × 15 , .01035 ft . or , say = 3 inch . Hence , in a 7 panel truss , as represented in Fig . 13 , with hv , if the diagonals in the middle panel be slack , by inch in 15 feet of length , no ...
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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