Feasibility and Process of Sawing Pine Logs for Lumber After Submersion
Submerged pine logs can be salvaged and processed into lumber, but the feasibility depends on various factors such as the duration of submersion, water conditions, and the species of pine. The process involves retrieving the submerged logs, typically using specialized equipment, and then processing them into lumber using standard sawmilling techniques. Logs retrieved from underwater may require additional treatments, such as drying, to restore their quality and prevent decay.
What are the Effects of Prolonged Submersion on Pine Lumber Quality?
Prolonged submersion can significantly affect the quality of pine lumber. Submersion can cause changes in the wood’s properties, such as a decrease in strength and stiffness due to water absorption. However, some studies suggest that submerged wood can have improved acoustic properties, making it suitable for musical instruments. Submersion can also lead to decay and degradation of the wood, especially if the logs are not properly dried and processed. On the other hand, submersion can have beneficial effects, such as reducing the risk of insect infestation and improving the wood’s appearance due to the lack of sunlight-induced discoloration.
How do Pine Trees Grow When Submerged?
Pine trees can survive underwater, but their growth conditions are significantly different from those on land. Different pine species have varying levels of adaptability to underwater conditions, with some species, such as the longleaf pine, being more tolerant of submersion than others. The growth rates of pine trees underwater are generally slower than those on land, due to the limited availability of oxygen and nutrients in aquatic environments. Environmental factors such as water temperature, oxygen levels, and nutrient availability significantly influence the survival and growth of pine trees underwater.
What are the Specific Measurements, Time Specifications, and Quantities Involved?
- Log Diameter: Logs with a diameter of at least 5 inches at the small end are generally considered merchantable sawlogs.
- Submersion Time: Logs submerged for up to 100 years can still be salvaged and processed into lumber.
- Timber Volume: An estimated 80,000 tonnes of timber can be harvested from submerged forests in Lake Pieman, Tasmania.