CANADIAN NATIONAL RAILWAYS 

 GENERAL SPECIFICATIONS 



FOR 



STEEL RAILWAY BRIDGES 



1922 



Scope 

 Definitions 



Highway 

 Traffic 



Tenders and 

 Proposals 



Drawings 

 to Govern 



Correctness 

 of Drawings 



Patented 

 Devices 



Drawings 



INTRODUCTORY 

 1. This Specification is intended to apply to F. : xed Spans 300 feet or under. 



2A. The term "Railway Company" refers to the Canadian National Railways or 

 any of its subsidiary branches or leased lines. 



3A. The term "Engineer" refers to the Chief Engineer of the Railway Company 

 or his duly authorized agents. 



4A. The term "Inspector" refers to the Inspector or Inspectors representing the 

 Railway Company. 



6A. The term 

 Contractor. 



'Contractor" refers to the manufacturing, fabricating, or erecting 



Freight Rates, 

 Duties and 

 Taxes 



7. When highway traffic is to be accommodated, the additional loading shall 

 be as specified by the Engineer. 



8A. All tenders and proposals are to be submitted in duplicate on the forms sup- 

 plied by the Railway Company for this purpose. Tenders are to be based on plans and 

 specifications as furnished by the Railway Company and unless otherwise called for, 

 the Contractor is not required to submit any stress sheets or other drawings with his 

 tender. 



9A. Where the Railway Company's drawings and the specifications differ, the 

 drawings shall govern. 



10. The Contractor shall be responsible for the correctness of all his drawings, 

 irrespective of any approval by the Engineer. 



11. Any material ordered prior to the approval of the drawings shall be at the 

 Contractor's risk. 



12A. The Contractor shall, unless otherwise specified, protect the Railway Com- 

 pany against all costs and claims on account of patented devices or parts used by him 

 in the Bridge. 



12B. After the contract has been awarded and before any materials are ordered 

 the Contractor shall submit to the Engineer for approval duplicate blue prints of all 

 stress sheets, and before any shop work is commenced he shall submit duplicate blue 

 prints of shop details and erection diagrams and other drawings made by him. The Con- 

 tractor is not to make any alterations to any approved drawing without the authority 

 of the Engineer. After approval the Contractor is to furnish the Railway Company 

 with such additional prints of each drawing as may be required (usually four sets). 

 On the completion of the Contract, the original tracings become the property of, and are 

 to be delivered to the Railway Company. 



12C. Drawings are to be made on the Railway Company's standard size sheets 

 as shown in Appendix I. Ordinarily, drawing size "B" is to be used but in any case 

 all drawings made for any one bridge are to be on the same size sheet. 



12D. Any amounts paid by the Contractor in connection with work being done 

 under this contract, for freight, duties or Dominion Government Taxes due to increases 



