This time of year brings an increased risk of house fires from wood stoves and space heaters, as well as an increased number of cases of carbon monoxide poisoning from non-traditional heat sources, such as unsound wood
stoves and oil/kerosene space heaters," says Murphy, who adds winter is especially hard on the state's homeless population, many of whom choose not to stay at shelters and instead walk the streets and sleep in homeless camps.
Three preliminary pallet cant grades were used to segregate the cants according to the volume of unsound wood.
The National Hardwood Lumber Association (NHLA) provides grading criteria for Common Timbers and Industrial Blocking that indicate the allowance of unsound wood as long as strength for intended use is not impaired due to this defect (NHLA 2003).
These grade rules were developed based on the allowance of 30 percent or greater unsound wood in cants that roughly accommodate the profitability of pallet part yields for pallet manufacturers.
The cant grade was based on the percentage of unsound wood volume resulting from these defects.
Not surprisingly, yield COV for Grade 3 cants was relatively large since Grade 3 simply represents all levels of unsound wood greater than 30 percent.
A cant containing wane (usually from small-diameter logs) but an otherwise low volume of unsound wood (less than 15%) could be initially classified as a Grade 1 cant.
However, it is important to note that some unsound wood volume will be included in kerf and dimension losses during cant processing.
large dark discolored areas; and punky or unsound wood.
This grade will not permit large open knots; wane; and large areas of punky or unsound wood.
This grade will not permit large open knots or holes; and large areas of punky or unsound wood.