46 BRIDGES AND CULVERTS. 



ERECTION OF STEEL, BRIDGES. 



GENERAL. Engineers, inspectors and contractors are ex- 

 pected to make themselves thoroughly familiar with the gen- 

 eral and special specifications governing the work. 



All material received must be carefully checked, recorded 

 and reported immediately upon receipt of same, in accordance 

 with the rules. Shortages should be reported immediately. 

 Material received should be checked against complete bill of 

 material, and every effort made to avoid delay to the progress 

 of the work, by failure to receive material, including false 

 work, tools, etc., etc. 



The engineer in charge must cause to be kept an accurate 

 record of the cost of the work, including material and labor, 

 keeping separately each class of work, such as rigging up, un- 

 loading, repairing, raising, fitting, riveting, cleaning, 

 painting, framing, bolting, contractors' pay roll, character of 

 plant, framing and erecting false work, and removal of same. 

 A diary must be kept containing dates of commencing and 

 completing different classes of work, and all other general in- 

 formation of value. A record, or copies of all orders, on in- 

 structions, issued or received during the progress of the work, 

 and the daily force account should also be kept 



The engineer in charge must check all distances and eleva- 

 tions on plans, before laying out the work, and will be held 

 responsible for any errors that may arise, through neglect on 

 the part of himself or assistants, properly to verify and re- 

 check, plans, points and elevations, given for the erection of 

 the structure. Distances between centers and elevations of 

 finished tops of masonry are especially important, and should 

 be rechecked as often as may be necessary, in order absolutely 

 to insure against errors. The sum of the heights of the com- 

 ponent parts forming the structure should be carefully 

 checked against the total finished height, above assumed 

 datum, to base of rail. The sum of all detail lengths must 

 also be checked, with equal care, against the total length 

 from the fixed initial point. 



Insure that the material shall not be injured, nor danger- 

 ously strained during the operation of loading, unloading or 



