(b). If substantial stones are not available, a 

 masonry footing should be provided. Por masonry use only 

 hard stones, preferably flat ones. All should be care 

 fully imbedded on their broadest faces in mortar of 1 part 

 cement and 2 parts coarse, clean, sharp sand. Each layer 

 should be well filled and flushed up on both sides and 

 firmly bonded together. The tops should be made level 

 to receive the underpinning. See Table No. C-4. 



(c).- Large stones of sufficient thickness to raise 

 the sill to a height of at least 12 inches above the 

 ground. 



(d). Blocks of masonry or concrete at least 12" high, 

 10 inches wide on top and 16" square at the bottom. The 

 top of concrete and masonry blocks should be made level 

 to receive the sills. See concrete section Table C-4. 



MATERIALS . 



All structural materials should conform as close- 

 ly as possible to the specifications given in the builder's 

 list and lumber order list. That minor deviations must 

 sometimes be made is recognized as unavoidable. 



SILLS. 



Should preferably be of cedar or redwood. Douglas 

 fir may be used as a second choice. 



Sills at corner should be halved together. When 



tv/o or more pieces are necessary to form the total length 



of sill, a splice should be made on the foundation supports, 

 as indicated on the plan. 



Two or more joints should not occur on the same 

 line of foundation posts. Arrange to have the splices 

 made over foundation posts of different sets. 



FLOOR JOISTS. STUDDING. BRIDGING ETC. 



Floor joists should be of selected sticks .straight 

 grain and free from all knots larger than 1 inch in diameter; 

 1st choice being Douglas fir, 2nd choice, White fir, 3rd 

 choice Yellow pine . Studding, headers, trimmers, plates, 



-9- 



