486 ERECTION OF STRUCTURAL STEEL. CHAP. XIV. 



Indicate by sketches or otherwise such repairs or replacement as will be found necessary in re- 

 erection. 



(21) Secure photographic records of progress and the important features of the work where- 

 ever practicable. 



(22) Make a record of flagging of trains, whether performed for the benefit of the Contractor 

 or otherwise, delays to trains, personal injuries, and accidents of every kind. 



(23) Make reports as directed, showing the progress of the work, the size of the force and 

 the equipment in use. 



Make a final report showing the cost of labor of erection per ton of material erected, the 

 cost of labor per rivet in riveting, the cost of correcting errors in design and fabrication and com- 

 menting on the design and details; and give such other information as may be useful in planning 

 similar work. 



