![]() ![]() ![]() The length of your log is the distance from one end of your log to the other. The SED is equal to or greater than one-half of any given log’s length.įor example, if your log is 10 feet long and has a SED of 6 inches, it would be classified as having a 6-inch small end diameter (6 inches = 1 foot). The SED is measured from the top of the bark to the center of the small end. The small end diameter (SED) is the diameter of the log at its smallest end, or butt end. It’s important to note that logs are not measured by diameter but rather by length, which should be included in your calculations if you’re looking at merchantable volume (the amount of wood that can be sold) or total log volume (the total amount of usable material). This means that the smallest end of the log is called its small end, while the big side is called its butt. The NHLA has continued to be an important voice in the hardwood industry since that time and serves as a model for other standards development organizations throughout the world. These rules were established in 1898 by lumbermen as a way to help standardize how lumber was sold so that all parties could benefit from an agreed-upon method of measurement, inspection and grading. The rules are a voluntary grading system that provides buyers and sellers a common language for the buying and selling of lumber. The National Hardwood Lumber Association (NHLA) rules are used to grade lumber. ![]()
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