The PRiNciPLiis ok Brooding. 



315 



This gives a strong sub-frame that is not likely to get out of square 

 when drawn over uneven ground. After fitting the joists into the 

 runners and securely naihng with 2od nails, the work is leveled, squared 

 and tied by means of a one-inch board nailed diagonally across the joists. 

 The house can be stiffened by bracing each corner of the frame with a 

 2" X 4" brace running from the union of one joist with the runner to a 





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Fig. 94. — Cross-section plan of ' A "-sliaped colony house, shoiving the position 



of the windows and door in front 



point on the opposite joist at an angle to it. Tliis is more desirable 

 when the shed roof is used. 



There are three types of floor structure, single boarding, double 

 boarding throughout, and double boarding under the hover only. When 

 using the latter two, the lumber should be planed and matched and of 

 good quality. When building the double floor, cheaper and rougher 

 material can be used for the sub-floor. This should be laid diagonally 



