bing, blasting or burning, relative ease of 

 removing stumps of different species, amount 

 and kind of explosive used for stumps of 

 given size and species length of time right- 

 of-way is cut in advance of grading size 

 and organization of crew and amount of 

 work done, daily, per man cost of clearing 

 per acre or other unit. 



(2) Grading: 



Material: classification of, and determina- 

 tion of amount of yardage. 

 Rock: Methods of blasting or other means 

 of reducing to a size that can be handled, 

 including drilling, loading holes, kind and 

 amount of explosive, fuse and caps ; labor 

 required; cost per cubic yard for supplies. 

 Earth: methods and equipment used in 

 moving ; labor required ; cost per cubic yard. 

 Labor: organization of crews, daily output 

 per man, cost per cubic yard. 

 Grade cross section: profile on level and on 

 fills and in cuts, shown by sketches drawn to 

 scale. 



(3) Timber work: 



Trestles: type character and size of timber 

 used for the various members character 

 and amount of hardware required equip- 

 ment used for construction purposes 

 methods of construction amount of timber 

 required in construction when are trestles 

 used in preference to a fill or a truss bridge. 

 Culverts: same data as for trestles. 

 Cribbing: same data as for trestles. 

 Corduroy: same data as for trestles. 

 Bridges: same data as for trestles. 

 Labor: organization of crews, number of 

 men required and qualifications, daily output 

 per man for structures of different heights. 



