36 



as in floor reinforcement, is to put the steel in place 

 according to plans, study the situation and save labor 

 cost. But by all means, put that steel in in such a 

 manner and by such means that it cannot be displaced 

 in pouring and tamping concrete. 



In ordinary monolith wall construction, it is less ex- 

 pensive and more satisfactory to place the steel after 

 one side of the centering is up, using this to work 

 against. Use thorough workmanlike methods ' to se- 

 cure the steel in position, and follow the best leads that 

 circumstances present. 



It is almost too apparent to require mention that the 

 steel can be maintained in position by fastening to the 

 tie rods or wires as the work progresses. As men- 

 tioned under "Field Manufacture of Concrete," care 

 should be used in tamping in wall construction. Es- 

 pecially as the final position of the steel depends to a 

 great extent on the intelligence used in the tamping. 



Steel in footings must be taken care of in the best 

 possible way that occasion offers. 



POSITION OF THE REINFORCING STEEL. 



The vital necessity of adopting positive means to se- 

 crre an exact position of the steel during the oper- 

 ation of pouring and tamping concrete is not realized 

 by most constructors. 



Steel must be at a specified distance from the ex- 

 terior surface to allow for firenroofing. Steel must 

 be at the required depth from the top of the slab to 

 meet the stresses to resist which it is designed. At 

 this critical point the steel must be held and it be- 

 hooves the man in the field to watch this point very 

 carefullv. There are on the market today a dozen or 

 so "unit" system* which secure this result. It will 

 pay the P<-1d man to send for handbooks describing 

 these, and studv them, and trv as nearly as possible to 

 work toward this end with the means at hand. 



