This line is used on a map, photo, or in the field to mark a line to determine the most feasible and economic route corridor between two terminal points
What is Reconnaissance line
100
Most cable systems use these to wrap around the logs before pulling them in
What are chokers
100
This ground based skidding system is considered to have the lowest site impact
What are Horses
100
The amount of sag in a line measured at midspan, expressed as a percentage of horizontal span length
What is Deflection
100
When designing roads we want them to be drive-able, so we have to work within a set amount of this
What is grade
200
The final designed centerline of the road
What is the L-line
200
In this system, logs are carried free of the ground surface
What is Skyline
200
These machines have arms that allow the machine to hold multiple cut trees so that they can lay logs down in a pile
What is a Feller Buncher
200
This is the point at the end of a cable system and anchors the line
What is a tail spar or stump
200
The placement of these features is often related to the type of harvesting system being used and the machine size and reach
What are landings
300
This line is an instrumental examination of the reconnaissance line to more precisely locate the route and gather additional field data
What is The preliminary line (P-line)
300
This cable system uses chokers and raises one end of the log above the ground surface
What is High Lead
300
A hoe chucker is involved in this phase of harvesting
What is skidding
300
This tower is at the front and a machine which yards the logs in
What is a head spar
300
To calculate the HD of a road, we need to divide this by this
What is VD / Slope %
400
These two lines are often considered equal on a low order survey and design.
What is the L-line and the P-line
400
This cable system uses gravity to move a motorized carriage
What is Shotgun
400
A special vehicle with a cradle or bunk or trailer used to yard/skid logs. Usually it is equipped with its own log loader device and may be tracked or wheeled.
What is a forwarder
400
The cable used to haul logs into the landing.
What is the mainline
400
Using the BC Economic Atlas we looked at several features, including this which showed up in the same colors as a traffic light
What is tree age
500
The initial location of the P-line is largely influenced by these, which are important in determining both the horizontal and vertical alignment
What are control points
500
At minimum, a cable system needs at least two drums to run these two different lines
What are mainline and haulback
500
This machine can be used to load trucks or to yard in nearby logs to the landing. Ones with "snorkel" installations have a particularly long reach.
What is a line grapple machine
500
A wire rope used to pull the mainline back to the timber for the next turn
What is the haulback
500
We can’t change the way the land is sloped (the contour interval) and we can’t change the slope % that the vehicles are able to handle. The only thing we can change is this