OBJECTIVE FORESTRY

FORESTRY

GENERAL FORESTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Most haul roads are designed with grades not exceeding ____ percent.
A
10.0
B
12.0
C
15.0
D
20.0
Explanation: 

Detailed explanation-1: -The appropriate slope limit for haul roads is 8% to 11% (approximately 5◦ to 6◦) and should be determined by considering the performance and efficiency of trucks used in the mine [5].

Detailed explanation-2: -Speed of vehicle movement, fuel cost of the truck and dust emission rate are the three attributes that define the performance of a haul road. This paper shows a novel ANN regression model to divine the values of these three attributes. The proposed ANN regression model is designed with eight input variables/attributes.

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