Cement for the Farm. 



407 



Grout. — A thin mixture of water, sand and cement. To fill the 

 spaces between stones with cement grout. 



Hydraulic Properties. — That property of cement which, when 

 moisture is added, causes it to set and harden. 



Plain Concrete — Concrete without reinforcement. 



Tensile Strength. — The adhesive power — the resistance to being 

 pulled apart. 



Compressive Strength. — The power to resist pressure or to pre- 

 vent being crushed. 



Waterproofing. — The power to resist the absorption of moisture — 

 to be made impervious to water. 



Core. — The form used to make the hollowed out portion of a 

 concrete article — as the hollow of a concrete block. 



Foundation or Subgrade. — The formation upon which the struc- 

 ture rests, either natural or artificial. 



Figure 1. View near Springfield, Mo. Rock road completed as far as the two 

 entrances, one on either side. The entrance on the left, with concrete gate posts, is 

 the Holland Stock Farm; on the right, brick and native stone, is the property and 

 home of Paul Nicholas. Concrete culverts are built over the drain ditches on both 

 sides of the road. These kind of permanent improvements speak volumes for prosperity 

 in Missouri. 



Footing Course. — A broadening and flattening at the foot of the 

 foundation wall in order to give a broader bearing upon the soil. 



Base or Subfoundation. — The first course of material placed in 

 the excavation for floors and sidewalks. 



Spaces or Centers. — The distance apart between centers of ob- 

 jects — as the spacing of concrete beams is the measurement from the 

 center of one beam to the center of the next one. 



