168 



CEMENT AND CONCRETE 



2) Provide reinforcing. If the trough is to be more than 

 4' in length, 1/4" rods should be used in addition to 

 the wire netting. 



3) Use a 1 : 2 : 3 proportion, and mix to a wet consistency. 



4) Place concrete and reinforcing. 



GENERAL. VIEW 

 OP TROUGH . 



FIG. 158. Hog trough. 



148. Engine or Machine Foundation (Fig. 159). 



Requirements: The requirements of this job will depend on 

 the particular machine. A machine subject to a great 

 deal of vibration should have a heavy foundation. 

 The proper-sized foundation can best be determined 

 by the maker of the machine. The structural details 

 would be about the same for all machines. 



Instructions: 



1) Excavate and prepare footing for foundation. 



2) Construct form according to plan. 



3) Provide bolts to fasten machine to base. 



4) Provide a template to locate bolts in base. 



