Material 

 Injured in 

 Transit 



Riveting 



Turned Bolts 



Unfilled Holes 

 Decks 



Maintenance 

 of Traffic 



Removal of 

 Old Structure 



21 



213A. All materials shall be handled during unloading with the greatest care possible 

 to prevent injury to any of the members, and also to prevent as far as possible any in- 

 jury to the paint. Materials shall be stored on skids or blocking placed so as to keep 

 same clear of the ground and of any standing water. All materials shall be stored at 

 such locations as will not interfere with the operations of the Railway Company. 



214. The Contractor, while unloading materials, shall compare and check off each 

 piece with the original shipping list and shall report promptly any shortage discovered. 



215. All small bends or twists received by members during transportation shall be 

 rectified before such members are put in place. Any serious bends or damage shall be 

 reported at once to the Engineer for instructions. 



216. All rivets shall be power driven unless otherwise authorized by the Engineer. 



217. In driving rivets, the bucker and the hammer snap shall be placed directly 

 opposite each other and at right angles to the riveted surfaces, and no tilting of snaps 

 will be allowed. Rivet heads shall be well formed, concentric with the shaft of the 

 rivet, and shall hold the several members together tightly. 



218. Rivets shall be heated uniformly to a light cherry red and driven while hot. 

 Rivets, when heated and ready for driving, shall be free from slag, scale and carbon 

 deposit. When driven, they shall completely fill the holes. Loose, burned or otherwise 

 defective rivets shall be replaced. In removing rivets, care shall be taken not to injure 

 the adjacent metal and, if necessary, they shall be drilled out. Caulking or re-cupping 

 will not be permitted. 



219. All turned bolts shall be perfectly tight in the holes and shall be burred or 

 otherwise checked to prevent the nuts from becoming loose. 



220. No unfilled bolt or rivet holes shall be left in any part of the structure. 



221. Unless otherwise specified, the Contractor shall frame and place all timber in 

 the bridge deck. 



222A. Unless otherwise specified, the Railway Company will supply the timber 

 necessary for the deck delivered at the bridge site. 



223A. The Contractor shall give all assistance required of him by the Railway Com- 

 pany's forces to help get the track connected up ready for traffic after any interruptions 

 to same caused in any way by his operations. The cost of this work shall be included in 

 the Contractor's tender for framing and placing deck timber, or where there is no timber 

 deck, this cost shall be included in the tender rate for erection of the new structure. 



224A. The Contractor shall not, without the special permission of the Engineer, 

 interfere with the operations of the Railway Company. 



225A. Changes in any structure supporting operating tracks, or changes in the 

 approach tracks, shall be undertaken only under the direct control and supervision of 

 the Railway Company. 



226A. When an existing structure is to be removed, this work shall be done as direct- 

 ed by the Engineer. 



227A. Unless otherwise specified, old timber structures shall be completely dis- 

 mantled. The timbers and iron work shall be piled separately at some convenient 

 location as directed, or loaded in cars supplied by the Railway Company for this purpose. 



228. Steel spans shall be removed without dismantling if same can be handled and 

 loaded on cars for shipment. If spans are cut apart, each span shall first be fully match- 

 marked, and also marked to show the span number and the mile and subdivision location 

 from which it is being taken. All markings shall be done with white paint. The match- 

 marking diagram shall be approved by the Engineer before spans are marked and re- 

 moved. 



