668 PARKS 



ground two and one-half feet below grade and be bedded in concrete, and 

 then run up a curtain wall of concrete from six inches below grade to the 

 sill. This makes a thoroughly practical form of construction and because 

 of its low cost is used generally for the big commercial houses. The other 

 method is to build a regular foundation wall of concrete, brick or stone, 

 running it from the sill to two and one-half feet below grade. On the tip 

 of this wall rests a cast iron sill, to which the side posts supporting the 

 rafters are directly bolted. 



