Question

1. explain how the janka hardness scale is used to test the hardness of lumber. 4 pts. 8. determine which of the following boards is the hardest: cherry, red oak, white ash, walnut or white pine? one species will not be on the hardness list. which one is not on the list? janka hardness scale.. 2 pts. hardest not on the list 9. decide on the type of softwood you might choose to make an outside dog kennel. support your answer with facts about the type of wood you choose and from the resources provided.. 2 pts.

Explanation:

1. The Janka Hardness scale measures the force required to embed a 0.444 - inch (11.28 - mm) steel ball to half its diameter in the wood. A higher Janka rating indicates a harder wood.
2. Red oak is generally one of the harder woods among the common ones listed. Typically, white pine has a relatively low hardness and might be the one not on a typical high - hardness list as it is a softwood while others are hardwoods.
3. Cedar is a common choice for outside dog kennels. It is a softwood that is naturally resistant to rot, decay, and insects, which helps it withstand outdoor conditions.

Answer:

1. The Janka Hardness scale measures the force to embed a steel ball half - way into wood; higher value means harder wood.
2. Hardest: Red oak; Not on the list: White pine
3. Cedar. It is rot, decay and insect resistant, suitable for outdoor use.