DOUBLE-UNIT HOUSE 129 
hemlock or yellow pine. A 2x 6 inch girder runs the length of the 
building supporting the rafters along their centre. The girder is 
Floor Plan. 
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Finish Coat e 1? 
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Fig. 83.—Working plans of a double-unit laying house. Each unit 20 x 20 feet, with a 
capacity of 100 birds. 
supported every ten feet by 4 x 4 inch posts, resting on concrete 
piers. The plates which rest on studs should be made of 2 x 4 inch 
material doubled, and joints “ broken.” 
9 \ 
