77 



the attention of the engineer. It is, however, desirable 

 to avoid all friction and conflict of authority on the 

 work, and in the interpretation of these instructions 

 the inspector must use common sense. 



Drawings. The drawings should be carefully 

 studied and their correctness verified. Any inconsis- 

 tencies or errors should be, at once, reported to the 

 engineer, and no work should be permitted when there 

 is any doubt in regard to the accuracy of the plans 

 for it. In these cases the engineer or the inspector 

 should communicate by telephone or telegraph with 

 some one having authority to verify the matter. 



Communications. Where possible all communica- 

 tions of importance should be transmitted in writing, 

 the inspector retaining a copy. Telegrams and tele- 

 phone messages should be duly confirmed in writing. 



Cement. The receipt of each shipment of cement 

 must be noted and its correspondence with the report 

 of the mill tests must be checked by a count of the 

 number of bags or barrels, the presence of the labora- 

 tory inspection tags, brands and the car initials and 

 numbers. Broken packages must be put to one side. 



Sampling. The method of sampling must be that 



directed by the specifications, when there embodied. 



Careful and accurate sampling is necessary in order to 



obtain a true average of >ment for the check 



\ sample should be taken from each barrel 



> fourth sack by a sampling rod which will reach 



to the bottom of the bag or barrel, in small shipments; 



for laree shipments every tenth barrel should be sam- 



icl the samples representing 50 barrels shall be 



combined. If it i< in-rmvcnient to sample the bags 



during the work of unloading, one ba-jr in ev 



should be ing later. Each sack for 



the sample pile must be tagged with the car number 



and initials so that ; positively identified with 



the shipment it represents. 



