14 



BULLETIN 1061, TJ. S. DEPARTMENT OF AGRICULTURE. 



-figures of amounts per acre are consequently much higher than those 

 that would result from the cutting of ordinary stands. In the use 

 of such ideal tables there is always great danger of overestimating 

 the amount of timber that is produced and may be cut from average 

 stands as they are commonly found. 



CROSSTIES AND CORDWOOD PRODUCTION. 



The approximate numbers of crossties and cords of wood (with 

 the bark and without the bark) produced in well-stocked stands at 

 different ages are shown in Table 4. These figures should be consid- 

 ered as only approximate, since various factors enter in to determine 

 the rate of growth and production of merchantable timber. Three 

 qualities of situation are shown under the headings of good, average, 

 and poor land. The yields are based upon the number and sizes of 

 trees as counted and measured in stands and upon the computed num- 

 ber of ties and cords that can be cut from trees of different sizes; the 

 figures do not represent amounts actually cut. 



The information contained in Tables 5 and 6 will be found useful 

 in calculating the numbers and grades of ties that can be obtained 

 from trees of different sizes. The sizes of the standard grades of ties 

 are: No. 1, 6 by 6 inches; No. 2, 6 by 7 inches; No. 3, 6 by 8 inches; 

 No. 4, 7 by 8 inches; No. 5, 7 by 9 inches. The standard lengths are 

 8 and 8-J feet. Table 6 shows the number of ties by grades that can 

 be cut from trees of different sizes, no allowance being made for de- 

 fects. For example, trees measuring 15 inches in diameter at breast 

 height and 60 feet in height will, on the average, cut out three grade 

 No. 2 ties, one grade No. 4 tie, and one grade No. 5 tie. Table 5 gives 

 the total number of ties without specifying the grades. Copies of 

 specifications for ties may be secured from the local railroad agent or 

 can be found in Farmers' Bulletin 1210, Measuring and Marketing 

 Farm Timber. 



Table 4. — Crossties and cordwood (pulpwood or fuehcood) produced per acre by 

 well-stocked, even-aged stands of longleaf pine at different ages. (Approxi- 

 mate. ) 



Age 



of 



stand. 









Cordwood. 



8 in. by 8 ft.). 



Wood with bark (fuel 

 wood, etc.). 



Peeled wood (pulp 

 wood, etc.). 



Better 

 land. 



Medium 

 land. 



Poorer 

 land. 



Better 

 land. 



Medium Poorer 

 land. land. 



Better 

 land. 



Medium 

 land. 



Poorer 

 land. 



Years. 

 20 

 30 

 40 

 SO 

 60 

 70 



Ties. 



Ties. 



Ties. 



Cords. 

 24 

 49 

 61 

 70 

 78 

 84 



Cords. 

 14 

 29 

 39 

 48 

 55 

 62 



Cords. 



3 



8 



17 

 28 

 33 

 40 



Cords. 

 19 

 39 



51 ' 

 59 

 66 

 72 



Cords. 

 10 

 21 



Cords. 

 2 

 6 



230 

 440 

 610 

 750 

 870 



30 

 245 

 385 

 510 

 620 





50 

 160 

 270 

 370 



31 

 39 

 45 

 51 



13 

 20 

 26 

 31 



