118 FORMULA. 



By formula (1) we have the maximum load of same engine up a grade of 150 



feet 79 tons. 



By formula (3) tor same data we h;ive a maximum load of 5Gf &quot; 



For a 20- ton engine on six drivers : 



The total adhesive weight will now be 44.800 Ibs. 



By formula (2) we have the maximum grade up which it can draw a load of 76 



tons 261 feet. 



By formula (4) a maximum grade of 181 &quot; 



By formula (1) with same data we have for a grade of 150 feet a maximum 



load of 124 tons. 



By formula (3) with same data, a maximum load of 89 &quot; 



For a 22-ton engine on four drivers: 



The total adhesive weight is about 31,500 Ibs. 



By formula (1) maximum load on level 787 tons. 



By formula (3) maximum load on level 503 &quot; 



By formula (2) the maximum grade up which it can draw a load of 76 tons is. . 178 feet. 



By formula (4) it is 122 &quot; 



By formula (1) the maximum load that this engine can draw up a 150 feet 



grade is ., 87 tons. 



By formula (3) it is 62J &quot; 



For a 22- ton engine on six drivers : 



The total adhesive weight is 49,280 Ibs. 



By formula (1) the maximum load on a level is 1.232 tons. 



By formula (2) the maximum grade up which it can draw a load of 76 tons is.. 289 feet. 



By formula (4) the maximum grade for same load is 201 &quot; 



By formula (1) the maximum load this engine can daw up a grade of 150 feet is 137 tons. 



By formula (3) the maximum load for J50 feet grade is 98 &quot; 



For a 24-ton engine on four drivers: 



The total adhesive weight is 34,406 Ibs. 



By formula (1) the maximum load on a level is 860 tons. 



By formula (3) the maximum load on a level is 615 &quot; 



By formula (2) the maximum grade up which this engine can draw a load of 76 



tons is 196 feet. 



By formula (4) the maximum grade for 76 tons is 135 &quot; 



By formula (1) the maximum load this engine can draw up a grade of 150 feet is 95 tons. 



By formula (3) the maximum load for same grade (150 feet) is 68 &quot; 



For a 24-ton engine on six drivers : 



The total adhesive weight is . 53,760 Ibs. 



By formula (2) the maximum grade up which this engine can draw a load of 76 



tons is 317 feet. 



By formula (4) the maximum grade for same load is 221 &quot; 



By formula (1) the maximum load this engine can draw up a grade of 150 feet is 149 tons. 



By formula (3) the maximum load up same grade is .- 



By formula (I) the maximum load this engine can draw up a 200-feet grade is. 



By formula (3) the maximum load up same grade is 83 &quot; 



By formula (1) the maximum load up 275 feet grade is 86f &quot; 



By formula (3) the maximum load up same grade is 62 &quot; 



For a 30-ton engine on four drivers : 



The total adhesive weight is 43,008 Ibs. 



By formula (1) the maximum load on a level is 1,075 tons. 



