GRADING THE DI rCHES FOR IILE, 12 3 



the tile be covered with sand without other material 

 being first used. 



Risk During Construction. — The ditch contractor 

 must assume all risks from storms and caving in of 

 ditches, and when each drain is completed it must be 

 free from sand and mud before it will be received and 

 paid for in full. In case it is found Impracticable, by- 

 reason of bad weather or unlooked-for trouble m dig- 

 ging the ditch, or properly laying the tile, to complete 

 the work at the time specified in the contract, the time 

 may be extended as may be mutually agreed upon by 

 employer and contractor. The contractor shall use all 

 necessary precaution to secure his work from injury 

 while he is constructing the drain. 



Tile to be Used. — Tile will be delivered on the 

 ground convenient for the use of the contractor. No 

 tile must be laid which are broken, or soft, or so badly 

 out of shape that they cannot be well laid and make a 

 good and satisfactory drain. 



Payments for Work.— Unless otherwise hereafter 

 agreed upon, the contractor may at any time claim and 

 receive from the employer seventy-five per cent of the 

 value of completed and accepted work at the price 

 agreed upon in the contract. Twenty-five per cent 

 will be retained until the entire work contracted for 

 is completed and accepted, at which time the whole 

 amount due will be paid. 



Prosecution of the Work. — The work must be pushed 

 as fast as will be consistent with economy and good 

 workmanship, and must not be left by the contractor 

 for the purpose of working upon other contracts, ex- 

 cept by permission and consent of the employer. All 



