1 3 / 
TABLE 30. THE PROBABLE USEFUL LIFE OF VARIOUS 
ARTICLES (Continued) 
Description. Rapect] Residual, pythority, Remarks. 
Years 
Reservoirs (continued) 
€aTtheN «oii ives EI00 Cal. R. R. Com. Cuyumaca Water Co. Case. 
Retort house 
BOOMS... vas ii sis vis sir niv en BIS=30 Wis. R. R. Com Quoted by H. A. Foster. 
Rolling stock 
street railway............. 12.5 Cooley Milwaukee 3¢ Fare Case. 
street railway............. 16.7 Starrett Milwaukee 3¢ Fare Case. 
street railway............. 15-20 Wis. R. R. Com Milwaukee 3¢ Fare Case. 
ratlroad. . v.80 via 28 Gillette Gt. Nor. & N. P. Appraisal. 
railroad locomotives....... 20-35 Wilgus Lehigh Val. R. R. App. 
railroad passenger cars..... 35-40 30-40% Wilgus Lehigh Val. R. R. App. 
railroad freight cars........ 30-50 25% Wilgus Lehigh Val. R. R. App. 
street railway cars......... 30 Arnold Coney Isl. & Brooklyn Case. 
street railway bodies. ..... 15 Wis. R. R. Com Milwaukee 3¢ Fare Case. 
street railway open bodies. 25 Trac. Val. Com. Chi. Con. Trac. Co. Case. 
street ry. closed bodies... . 20 Trac. Val. Com. Chi. Con. Trac. Co. Case. 
street ry. bodies and trucks 13.3 M.E.R.&L. Co Milwaukee 3¢ Fare Case. 
street ry. bodies and wi 20 Chi. U. T. Co. Chi. Union Trac. Co. Case. 
street ry. bodies and trucks’ 20 Stone & Webs. Chi. Union Trac. Co. Case. 
street railway trucks...... 15-20 Wis. R. R. Com Milwaukee 3¢ Fare Case. 
street railway trucks...... 30 Trac. Val. Com. Chi. Con. Trac. Co. Case. 
street railway trucks...... 30 Arnold Coney Isl. & Brooklyn Case. 
street railway elec. equip. . 10 M.E.R.&L.Co. Milwaukee 3¢ Fare Case. 
street railway elec. equip.. 12-15 Chi. U. T. Co. Chi. Union Trac. Co. Case. 
street railway elec. equip.. 12-15 Stone & Webs. Chi. Union Trac. Co. Case. 
street railway elec. equip.. 10-20 Wis. R. R. Com Milwaukee 3¢ Fare Case. 
st. ry. fenders and registers 15 Wis. R. R. Com Milwaukee 3¢ Fare Case. 
Scrubbers and condensers. . . . . 30 Wis. R. R. Com. Quoted by H. A. Foster. 
Services (electric)........... 15 P. G.& E. Co. S. F. rate hearings, 1913-14. 
20 S.J. L.&P. Cor. Cal. R.R. Com. rate hearing, 
21.6 30% Cal. R. R. Com. Calis. E. Co. s. Napa Val. 
E.C. 
Snowsheds (R. R.)........... 25 Gillette Gt. Nor. & N. P. Appraisal. 
Stacks 
Brick... oii iis 33 Trac. Val. Com. Chi. Con. Trac. Co. Case. 
LT REE RL AT 33.3 Floy 4 Chicago Appraisals. 
steel... c. viodarda a pa 12 P. G. & E. Co. S. F. rate hearings, 1913-14. 
steel... dade BR Td 2 Floy 4 Chicago Appraisals. 
Sand Pipes. ..visveivauinin 25 Rosecrans Galena Appraisal, Kan., 1905. 
30 Kiersted Galena Appraisal, Kan., 1905. 
40 Williams Galena Appraisal, Kan., 1905. 
25-40 Metcalf Trans. Am. Soc. C. E., 1909. 
Station buildings and R. R. 
SHUCIUYES . ...onvivive sins BRIO Cal. R. R. Com. Stockton Term & East Case. 
Steam vessels 
on Great Lakes............| 40 15%  Wilgus Lehigh Val. R. R. Appraisal. 
on tide water..............| 32 | 15%  Wilgus Lehigh Val. R. R. Appraisal. 
Stokers 
Bxed parts....... uc... ven “ry Trac. Val. Com. Chi. Con. Trac. Co. Case. 
MOVING parts. ......... Trac. Val. Com. Chi. Con. Trac. Co. Case. 
~ABLEf 
42"