. Giornale ferroviario elettrico . in parte a causa della relativamente piccola, in miglia, della strada media, che non può permettersi il lusso anche se il numero di ponti a garanzia. In molti casi praticamente tutti i ponti sono ponti autostradali che sono manutenzioniprimariamente dai vari funzionari civili incaricati. Evenon strade di notevole chilometraggio con diversi centredponti, l'ingegnere di manutenzione di modo è la carica indiretta dei ponti e di solito chiama in aconsulting ingegnere ponte quando di fronte a problemi di ponte non usuali come il rafforzamento per i carichi pesanti, r
2163 x 1155 px | 36,6 x 19,6 cm | 14,4 x 7,7 inches | 150dpi
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. Electric railway journal . partly due to the comparatively smallsize, in mileage, of the average road, which cannot afford the luxury even if the number of bridges mightotherwise warrant. In many cases practically all ofthe bridges are highway bridges which are maintainedprimarily by the various civic officials in charge. Evenon roads of considerable mileage with several hundredbridges, the engineer of maintenance of way is indirect charge of the bridges and he usually calls in aconsulting bridge engineer when confronted with un-usual bridge problems such as strengthening for heavierloads, rebuilding for double tracking and periodic expertinspection, the latter being required by law in severalstates. The first requirement in connection with well-orderedbridge maintenance is an adequate record of the numberand type of structures over which the maintenanceengineer has charge. The simplest way to obtain this, if not on hand, is to start afresh and have a compre-hensive examination of all bridges made by an engineer. UNTREATED SOUTHERN YELLOW PINE BRIDGETIMBERS AFTER TWELVE YEARS IN SERVICE who makes a specialty of such work. Too much de-pendence cannot be placed in such plans as may beavailable in the office unless every detail has beencarefully checked up, and as a rule the detailed plansof highway bridges crossed by electric railways arenot to be found in the railway companys files. Someconsulting engineer, during the construction period ofthe road, may have had them but he generally has keptthem, too. The importance of having them is best Galway LineStatement of Work to be done Western DivisionBridges & Culverts During 1914 49 Sheets Sheet No. 2 Bridge &CulvertNumbers Kind P H, Work to be done Approi.Cu.Yd. Ln.KtUrn.to beFld Lin. Ft.ot Pipe Required Number DateCom . pletec Riprap Kind 12 is 24* 3o 3« Tim.Bill A.F.E. Pile ■sVi Pile, and deck poor. Replace with 36 in. concrete 30 8 12 Con rote >lpe 32 21 pipe 32 (t. long, nil and place ooe metal numberplate. SA
