FARM STRUCTURES 



449 



coverings are placed. The Shawver frame is quite thor- 

 oughly braced in every way, as is shown by the accompanying 

 drawing. It is one of the standard forms of barn frames. 



Steel Frames. Steel frames are now manufactured for 

 barns to a limited extent. The frame is made entirely of 

 steel in the shop ready to set up. They are generally more 

 expensive than the wooden frames. 



Round Barns. In some localities the round barn is very 

 popular. In general, it has two serious objections: (1) It 

 is quite difficult to light a large round barn efficiently, and 

 (2) it is difficult to ar- 

 range the barn so as to 

 prevent a considerable 

 waste of space. A lar- 

 ger space can be enclosed, 

 however, within the wall 

 of the round barn than 

 in any other type using 

 the same amount of ma- 

 terial. Generally the 

 frame for the round barn 

 consists of studding, 

 spaced about two feet 

 apart, on which wooden 

 hoops of inch lumber 

 bent to the circle are 

 nailed. The roof is conical in form and is very rigid. 



Fig. 291. 



A sketch of a barn frame with 

 posts and purlins. 



Most 



round barns have a double pitch to the roof, with the rafter 

 cuts as for the Wing joist frame. 



QUESTIONS 



1. Discuss the merits of shed, gable, and gambrel roofs for barns. 



2. Describe the braced or full frame for a barn. 

 15— 



