118 
FORMUL/E. 
By formula (1) we have the maximum load of same engine up a grade of 150 
feet. 79 tons. 
By formula (3) for same data we have a maximum load of... 56§ “ 
For a 20-ton engine on six drivers: 
The total adhesive weight will now be. 44.800 lbs. 
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 “ 
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 “ 
For a 22-ton engine on four drivers: 
The total adhesive weight is about. 31,500 lbs. 
By formula (1) maximum load on level. 7S7£ tons. 
By formula (3) maximum load on level. 563 “ 
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 “ 
By formnla (1) the maximum load that this engine can draw up a 150 feet 
grade is... 87 tons. 
By formula (3) it is. 62J “ 
For a 22-ton engine on six drivers: 
The total adhesive weight is. 49,280 lbs. 
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.. 2S9 feet. 
By formula (4) the maximum grade for same load is. 201 “ 
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 150 feet grade is. 98 “ 
For a 24-ton engine on four drivers: 
The total adhesive weight is. 34,406 lbs. 
By formula (1) the maximum load on a level is. S60 tons. 
By formula (3) the maximum load on a level is. 615 “ 
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 “ 
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£ “ 
For a 24-ton engine on six drivers: 
The total adhesive weight is. 53,760 lbs. 
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 “ 
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. 106£ “ 
By formula (1) the maximum load this engine can draw up a 200-feet grade is. 115J “ 
By formula (3) the maximum load up same grade is. 83 “ 
By formula (1) the maximum load up 275 feet grade is. S6§ “ 
By formula (3) the maximum load up same grade is ... 62 “ 
For a 30-ton engine on four drivers: 
The total adhesive weight is. 43,008 lbs. 
By formula (I) the maximum load on a level is. 1,075 tons. 
