Lumber Grades And Numbers
Grades are not determined by gut reactions to what a person thinks the grade should be but actual measurements of clear sections and definitions for defects.
Lumber grades and numbers. Non stress or common graded softwood is graded for strength and appearance though strength is the primary consideration and appearance is given less weight as the grade decreases. A new hobby is born. Before we get into the different grades of lumber let s take a look at the various defects you may find in a piece of lumber. 2 to 4 thick 6 to 14 wide.
Lumber is graded based on the quality and appearance of the wood. An overview of lumber grades and wood quality. See table 1 for design values. I wonder if there are lumber spotters out there like train spotters except they try to find all of the possible lumber grade stamps in the world.
Lumber grades and numbers get the basic facts about lumber numbers and grades. One wide face and both adjacent narrow faces must be free of pith and or heartwood. Hardwood grades are based on the size and number of clear pieces that can be obtained from a board when it is cut up to be used to make a product. The standard grades of hardwood lumber are.
Application of the product requires pressure treatment by an approved treating process and preservative for. The highest grade is number 1 and has the fewest defects. Any grade of dimension lumber. Grade characteristics and typical uses.
Unlike hardwood lumber grading softwood lumber grading is based on least defective or best side of the board.
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