THE STAVE SILO. 55 



hibitory. For the convenience of such parties and others who 

 may prefer to build their own stave silos, directions for their 

 construction are given in the following: The specifications for a 

 100-ton stave silo, printed below, which are taken from Woll's 

 Book on Silage, were furnished by Claude & Starck, Architects, 

 Madison, Wisconsin. 



Specifications for 100-ton Stave Silo. 



MASONRY. 



Excavate the entire area to be occupied by the silo to a depth 

 of 6 inches; excavate for foundation wall to a depth of 16 inches; 

 in this trench build a wall 18 inches wide and 20 inches high, of 

 field stone laid in rich lime mortar. Level off top and plaster in- 

 side, outside and on top with cement mortar, 1 part cement to 1 

 part sand. Pill inside area with four inches of good gravel, thor- 

 oughly tamped down; after the wood work is in place coat this 

 with one inch of cement mortar, 1 part cement to 1 part clean 

 sand. Cement shall be smoothly finished, dished well to the 

 center and brought up at least 2 inches all around inside and 

 outside walls. 



CARPENTRY. 



All staves shall be 26 feet long in two pieces, breaking joints, 

 and made from clear, straight-grained cypress, 2x6 inches, bev- 

 eled on edges to an outside radius of 8 feet, mill-sized to the 

 exact dimensions and dressed on all sides. There shall be three 

 doors in the fifth, eighth and tenth spaces between the hoops, 

 made by cutting out from staves 28 inches long cut to a 45-degree 

 bevel sloping to the inside. (See Fig. 15.) The staves shall then 

 be fastened together with two 2x4 inch battens cut on inside to 

 an 8-ft. radius and bolted to each stave with two %-inch diameter 

 carriage bolts with round head sunk on inside and nut on outside. 

 The staves between the doors shall be fastened together top and 

 bottom, with %-inch diameter hardwood dowel pins, and abutting 

 ends of staves shall be squared and toe-nailed together. 



Bottom Plates. Bottom plates shall be made of 2x4-inch 

 pieces about 2 feet long, cut to a curve of 7 feet 10 inches radius 

 outside. They shall be bedded in cement mortar and the staves 

 shall then be set on the foundation and well spiked to these 

 plates. 



