Products obtained from the stands were classified as follows: 



1. SAW LOG pieces with at least 11.5 inches (29.2 cm) top 

 diameter and 12 ft (3.7 m) long 



2. STUD LOG pieces 5.5 to 11.5 inches (14.0 to 29.2 cm) 

 top diameter and 8 ft (2.4 m) long 



3. HOUSE LOG pieces 7.0 inches (17.8 cm) top diameter 

 and any length over 12 ft (3.7 m). 



To evaluate lumber and chip recovery, the saw logs from 

 units 1 and III and units II and IV were combined. These logs 



were processed into ties, studs, and 2 x 3's. Lumber, tie, and 

 chip recovery is shown in table 10. An estimated 8 percent of 

 the green lumber recovery would be trimmed and lost because 

 of checks and splits in the logs and lumber. 



House log use was evaluated using a two-truckload sample of 

 dead ponderosa pine logs obtained from a similar area adjacent 

 to the study units. The sample was processed at a sawmill that 

 had produced materials for a log home manufacturer 

 (table 11). 



Table 10.— Lumber and chip recovery obtained from two groups' 

 of study unit logs 





Group 1 



Group 2 



Item 



saw logs' 



saw logs' 



Number of logs 



473 



446 



Total log scale volume (bd.ft.) 



31,665 



24,297 



Average log scale volume 







(bd.ft.) 



67 



54 



Recovery 







Ties (bd.ft.) 



7,586 



2,990 



Rough green lumber (bd.ft.) 



25,038 



26,410 



Total 



32,624 



29,400 



Lumber trim loss (8%) 



2,003 



2,113 



Rough dry lumber (bd.ft.) 



23,035 



24,297 



Chip volume (bone dry unit) 



17.0 



12.6 



Ratio BDU/M bd.ft. 



0.52 



0.52 



'Group saw logs were from units I and 111; group 2 saw logs were fronn 

 units II and IV. 



Table 11.— House log sample and recovery of products used in log home manufacture 



Item 







SAMPLE LOGS 







Number of logs 





278 







Lineal feet 





7,851 







Gross bd.ft. log scale 





11,950 







Net bd.ft. log scale 





11,880 







Gross ft^ scale 





2,685.4 









PRODUCT RECOVERY 









Lineal feet 



Bd.ft: 



Ft' 



Percent 



House logs^ 



2,826 



11,304 



2,540.2 



42.5 



Rafters 



456 



1,596 



358.7 



6.0 



Studs 



4,488 



2,991 



672.1 



11.2 



Posts (7 ft) 



238 



71 



16.0 



.3 



1 inch X 6 ft 



176 



88 



19.8 



.3 



2 inches x 4 inches x 7 











ft 



469 



312 



70.1 



1.2 



Total 



8,653 



16,362 



3,676.9 



61.3 







RESIDUE 







Gull, chips, sawdust, bark 







2,301.4 





'Board foot, cubic foot ratio was 4.45. 

 ^House logs are 6-inch (15.2-cm) cants. 



8 



