408 



Missouri Agricultural lieport. 



Radius. — One-half the diameter of a circle — used iu making 

 circular concrete forms. 



Circumference. — The outer rim of a circle. 



Monolith or Solid. — Built as "one stone." A single piece of work, 

 as a solid wall or a porch floor made in one slab. 



Hollow AVall. — ^Two thin concrete walls tied together with con- 

 crete piers or steel rods or bars at regular intervals. 



Hollow Block. — A concrete block containing a hollow or open 

 space through one way of the block, used for building purposes. 



One use for concrete in construction of country road bridges. Concrete flooring- and 

 abutments insuring substantial and lasting ijridges. 



Stucco. — A cement mixture or concrete applied over a surface 

 (commonly as a mortar applied over rough stone, brick or metal lath.) 



Pebble Stone Finish. — Stucco work finished by spreading small 

 pebbles over the green surface. 



Bush-Hammered.- — Solid concrete surface "picked" over with a 

 specially made hammer, called a bush-hammer, for the purpose of 

 giving the surface the appearance of a rough finish. 



