Improving the main trail — Placing the right wood in the ruts & construction of corduroy bridges

Fill in the blanks.
Select the appropriate term from the dropdown list of terms in each blank, and then press "Check" to check your answers.
You have 10 minutes to complete the test.

  

Moving across areas with poor carrying often creates deep ruts. In many cases, this does not necessitate the construction of a bridge. However, if you feel that the are getting too deep and you are afraid of getting stuck, you will have to take some action. Under such circumstances, it can be helpful to place in the ruts; is often suitable for this purpose. Once the wood has been placed, it is advisable to place over it to bind the wood together. Wood placed in the ruts during winter conditions may together and cannot be recovered after use.

Because the wood used in log causeways is generally rendered unfit for industrial use, the least valuable wood should be used in their , as rot-damaged pulpwood that has been sorted out. As a last option, use , but not the most valuable ones.