OVERHAUL. 



83 



one; but such a lack of readiness to solve it has the engineer 

 shown that many a contract has been executed with the privi- 

 lege of wasting and borrowing at the end of the haul. This 

 practice results at times in waste of energy by the contractor, 

 and still oftener in the waste of money to the other party to 

 the contract. By the system of wasting and borrowing, mate- 

 rial is paid for at the full price of excavation beyond the haul, 

 but with the judicious use of overhaul, in many cases the mate- 

 rial may be hauled half a mile before its price is doubled. 

 When, from the increase of the traffic of a railroad, for exam- 

 ple, it becomes necessary to grade for a second track, and in 

 so doing to remove material wasted on the margin of a cut into 

 an adjoining borrow pit along the neighboring fill, where it 

 ought to have been deposited in the first place, it neither in- 

 creases the respect of the later engineers for their predecessors, 

 nor is it a credit to the profession. 



Overhaul as commonly worked out is done in an approxi- 

 mate manner with the ordinary profile and the volumes in ex- 

 cavation and embankment. It takes longer to work it out 



Increments. Ordinates. 



Increments. Ordinates. 



