EXPERIMENT STATION BULLETINS. 



207 



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'1 



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 Mau-track fa ca^/m 



Crau/7^ on ^iVtsf Carngr 



Groi/ni/ on EaS^ Side 



Gfot/nt^ on S£asf 

 Corner 



r of Wffsf ' Fl/-iif7f/^n nf Cr.ti^^ Il/itrit^n^ Reef rj^.^/Js Barf j 

 Dirnensicns. Un^fhjs^' iviJfh^^s' rise f^o ffaa^s . S£ ' U^ft^ofroof, 30' 



Next we must figure on the material needed. The length of the main 

 cable passing from the ground on one corner up to and along the ridge 

 board and down into the ground on the opposite corner, is gotten from 

 the following measurements: 



Depth of "ground" 10 feet 



Rise to eaves 22 feet 



Distance up to the ridge of the roof 30 feet 



Length of body of barn 152 feet 



Distance down roof 30 feet 



Drop to earth surface 22 feet 



Depth of ''ground" 10 feet 



Total 276 feet 



The length of the cable which grounds at the center of the barn is 

 62 feet. Two of the points will be 4 feet long, the remaining three 

 will be 81/2 feet in length. None of the points need be threaded at the 

 bottom as they all will be set into y^" tees, which are strung on the 

 horizontal cable, and fastened in the same manner as the center ground 

 cable is attached to the horizontal cable, (No. 1, Fig. 2.). The two 

 end points will be fastened to the vertical 4x4 posts. The cupola points 

 will be secured by boring a 9-16 inch hole through the end of the cupola 

 roof and passing the point down through the hole into the tee where 

 it is fastened securely with a %" setscrew. 



One inch holes are bored through the north and south sides of the 

 cupolas in line with the ridge board so the horizontal cable can pass 

 through the cupolas on a straight line and without a change of level. 

 The cables going to the ground can be passed over the eaves-trough 

 but it tends to bend the eaves-trough out of shape. The better way is 

 to bore an inch hole near the end of the lower row of shingles and 

 pass the cable down through this hole between them and the eaves- 

 trough. The cable should be in contact with the trough. 



After boring our holes for the grounds we are ready to put up the 

 cable. It is pulled up to the ridge and passed through the cupolas, 

 not forgetting to put the tees on the cable where they belong. One 

 is most apt to forget the tee for the center ground cable. Having passed 

 the cable over the roof, it is put down through the inch hole near the 



