SPECIFICATIONS FOR THE ERECTION OF RAILWAY BRIDGES.* 

 AMERICAN RAILWAY ENGINEERING ASSOCIATION. 



1. Work to be Done. The Contractor shall erect, rivet and adjust all metal work in place 

 plrtf, ami [>erform all other work hrn-iuat'irr sj>ecified. 



2. Plant. The Contractor shall provide all tools, machinery and appliances necessary for 

 tin- t-x|x-ilitious handling of the work, including drift pins and fitting up bolts. 



3. Falsework. The method of erection and plans for falsework and erection equipment 

 shall be subject to approval by the Engineer, but such approval shall not relieve the Contractor 



from any responsibility. Falsework will be built by t Falsework 



matt-rial of every character will be provided by the t 



The temporary structure for use during erection and for maintaining the traffic shall be 

 propi-rly designed and substantially constructed for the loads which will come upon it. All bents 

 shall be thoroughly secured against movement, both transversely and longitudinally. The bents 

 shall l>e well secured against settling, and piles used wherever firm bottom cannot be obtained. 

 Upon completion of the erection, the temporary structure, if the property of the Railway Company, 

 shall be removed without unnecessary damage and neatly piled near the site or loaded on cars, 

 as may be directed. If the property of the Contractor, it shall be removed in a manner subject 

 to the approval of the Engineer. 



Falsework placed by the Railway Company under an old structure or for carrying traffic, 

 may be used as far as practicable by the Contractor during erection, but it shall not be unneces- 

 sarily cut or wasted. 



4. Conduct of Work. The work shall be prosecuted with sufficient force, plant and equip- 

 ment to expedite its completion to the utmost extent and in such a manner as to be at all times 

 subordinate to the use of the tracks by the Railway Company, and so as not to interfere with the 

 work of other contractors, or to close or obstruct any thoroughfare by land or water, except 

 under proper authority. 



Reasonable reduction of speed will be allowed upon request of the Contractor. 



Tracks shall not be cut nor shall trains be subjected to any stoppage except when specifically 

 authorized by the Engineer. 



The Contractor shall protect traffic and his work by flagman furnished by and at the expense 

 of the Railway Company. The Contractor shall provide competent watchmen to guard the work 

 and material against injury. 



5. Engine Service. If under the contract, work train or engine service is furnished the 

 Contractor free of charge, such service shall consist only in unloading materials and in trans- 

 ferring the same from a convenient siding to the bridge site. Other engine service shall be paid 



for by the Contractor at the rate of $ per day per engine, the time to include the time 



necessary for the engine to come from and return to its terminal. When engine service is desired 

 the Contractor shall give the proper railway officials at least 24 hours' advance notice and the 

 Railway Company will furnish the service as promptly as possible, consistent with railroad 

 operations. 



When derrick cars are used on main tracks, their movements shall be in charge of a train 

 crew, and the expense of the crew and any engine service other than as noted above shall be 

 charged to the Contractor. 



. 6. Transportation. When transportation of equipment, materials and men is furnished 

 free over the Railway Company's line, it shall be subject to such conditions as may be stated 

 in the contract. 



7. Masonry. The Railway Company will furnish all masonry to correct lines and elevations, 

 and unless otherwise stated in the contract, will make all changes in old masonry without un- 

 necessarily impeding the operations of the Contractor. The Railway Company's engineers will 

 establish lines and elevations and assume responsibility therefor, but the Contractor shall com- 

 pare the elevations, distances, etc., shown on plans, with the masonry as actually constructed as 

 far as practicable, before he assembles the steel. In case of discrepancy, he shall immediately 

 notify the Engineer. 



8. Handling and Storing of Materials. Cars containing materials or plant shall be promptly 

 unloaded upon delivery therefor, and in case of failure to do so the Contractor shall be liable for 

 demurrage charges. Material shall be placed on skids above the ground, laid so as not to hold 

 water, and stored and handled in such a manner as not to be injured or to interfere with railroad 

 operations. The expense of repairing or replacing material damaged by rough handling shall be 

 charged to the Contractor. The Contractor, while unloading and storing material, shall compare 

 each piece with the shipping list and promptly report any shortage or injury discovered. 



* Adopted, Am. Ry. Eng. Assoc., Vol. 13, 1912, pp. 83-87, 935-945. 

 t Insert "Railway Company" or "Contractor," as the case may be. 



483 



