PROJECTS IN CONCRETE CONSTRUCTION 149 



the close resemblance between other types of floor con- 

 structions, such as feeding floors, barnyard pavements, 

 basement floors, garage floors, etc., and concrete walks, 

 only a detailed description of the construction of one 

 type will be given. The location and drainage of any 

 walk or floor must be considered. 

 Working Instructions: 



1) In laying out a walk, the first consideration is its loca- 

 tion with reference to buildings and the road. If it is 

 to be located with reference to a certain building, 

 either parallel or at a right angle, it should be definitely 

 located by careful measurement. Stake out the posi- 

 tion of the walk and draw a tight string so that the 

 surface may be properly leveled to a uniform grade. 

 This surface should be thoroly tamped to prevent any 

 settling after the walk has been placed. 



Under certain conditions, where there is a tendency for 

 water to collect under a walk, cinders or gravel may be 

 used as a sub-base. Ordinarily, the concrete will be 

 placed directly on the well-tamped soil. 



2) Make the forms of 2" lumber, either 4" or 5" wide, de- 

 pending on thickness to which walk will be made ; 4" is 

 satisfactory for most conditions. Place the forms 

 carefully to grade, and fill in with earth and tamp any 

 low places before placing any concrete. Proper and 

 careful alignment of the forms is the most important 

 feature to insure a good-looking job. Definite meas- 

 urements must be taken to locate carefully the posi- 

 tion of the forms. A level should be used in order to 

 see that the forms are properly leveled. 



