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5/4 (five-quarter) lumber is 1.25″ thick when rough sawn. When 5/4 lumber is planed, typically it is finished at 1.063″ thick. When 6/4 lumber is planed, typically it is finished at 1.25″ thick. 8/4 (eight-quarter) lumber is 2″ thick when rough sawn.
What is the actual thickness of 5/4 lumber?
Hardwood Lumber Dimensions NOMINAL SIZE ROUGH SIZE ACTUAL SIZE: SURFACED 1 SIDE 5/4 inch 1 1/4 inch 1 1/8 inch (29 mm) 6/4 inch 1 1/2 inch 1 3/8 inch (35 mm) 8/4 inch 2 inches 1 13/16 inch (46 mm) 12/4 inch 3 inches 2 13/16 inch (71 mm).
Why is it called 5 4 board?
Quarters refer to the thickness of rough-sawn lumber measured in ¼-inch increments. Instead of reading it as a fraction, it should be read as a number of quarters: 5/4 is five quarters, 4/4 is four quarters, etc.
What lengths do 5 4 boards come in?
The nominal dimensions of lumber are commonly based on the rough cut size before being planed smooth on all four faces.Deck Board Sizes and Actual Dimensions. Common Deck Board Sizes Nominal Dimensions Actual Dimensions 5/4 x 6 1 x 5½” 2 x 4 1½” x 3½” 2 x 6 1½” x 5½”.
What is a 5 quarter board?
It simply refers to how many 1/4-inches thick the rough stock is. For example, 4/4 (read out loud as four-quarters) is 1-in. thick in the rough. 5/4 is 1-1/4-in. thick, 12/4 would be three inches thick.
How far can 5 4 decking span?
Decking Board Considerations Decking boards span from joist to joist. If you use 5/4 decking, joists must be no farther apart than 16 inches. Decking made of 2x4s or 2x6s can span up to 24 inches. If you will run decking at an angle, you might need to put the joists closer together.
Can I use 2×6 for deck boards?
Wood decking is commonly available in 2×6 and 5/4 x 6 profiles. 5/4 x 6 is produced specifically for decking and is milled with a radius edge or bull nose. 2×6 is thicker and is stronger, but is also more expensive. Spacing between deck boards provide a few critical functions.
What does s3s mean when buying a board?
It stands for “Surfaced Three Sides”, which, as used in Goosebay’s hardwood lumber descriptions, indicates that two faces have been planed, and one edge has been processed with a straight-line rip saw, rendering the edge straight and smooth. The other edge is left rough, as the board came from the sawmill.
Is Ash a hardwood?
Ash is an amazingly dense and durable hardwood with unique elasticity that makes it ideal for installation in larger spaces. Ash features meandering grain patterns that range from fairly straight to gorgeous swirls.
Why is a 2×4 not 2×4?
DIMENSIONAL LUMBER: In the past, when a timber was called a 2×4 [or “two-by-four”], it actually measured 2 inches by 4 inches. Because of this extra milling, a 2×4 no longer measures a full 2 inches by four inches. Instead, a 2×4 is really only 1 1/2″ by 3 1/2″.
Are 5 4 deck boards treated?
x 6 in. x 8 ft. Standard Ground Contact Pressure-Treated Pine Decking Board.
What are the actual sizes of dimensional lumber?
Common Dimensional Lumber Sizes Dimensional Lumber: Nominal Size vs. Actual Size Two-by-four or 2 x 4 1 1/2 inches x 3 1/2 inches Two-by-six or 2 x 6 1 1/2 inches x 5 1/2 inches Two-by-eight or 2 x 8 1 1/2 inches x 7 1/4 inches Two-by-ten or 2 x 10 1 1/2 inches x 9 1/4 inches.
What size lumber is used for decking?
Commonly used joist sizes are 2-by-6, 2-by-8 and 2-by-10. For example, when you space joists 16″ apart — which is standard for residential decks — a deck spanning 9 1/2′ would require 2-by-6 joists, a 13′ deck would need 2-by-8 joists and a 16′ deck calls for 2-by-10 joists.
Why is wood measured in quarters?
Rough sawn lumber comes in “true” thicknesses as reflected by the “quarters” size. Lumber sized according to “Quarters” reflects the number of quarters of an inch thick the lumber is. To figure the thickness of a board referenced in “quarters” sizes, simply divide the second number (4) into the first number.
What does FAS mean in lumber?
FAS: (first and second grade) This stands for the highest grade of lumber. FAS grade includes some defects but is considered the premier lumber for furniture and cabinet making.
What are the dimensions of 4 4 lumber?
A board foot is 12″ X 12″ X 1″. A “quarter” system is commonly used in the hardwood lumber industry when referring to thickness. 4/4 refers to a 1 inch thick board, 6/4 is 1-1/2 inch, 8/4 is 2 inches, and so on.
Can you use 4×2 for decking frame?
4 x 2 Timber Rail / Joist. These decking joists are the most common sized framing timber for decking. They provide a solid structure for fixing your decking boards too. When making your decking frame you should use a 400mm spacing between your timber joists.
Can 2×4 be used as deck joist?
The short answer is yes. 2x4s can work for deck joists. 2x4s are the smallest dimensional option, making them great for low, ground-level decking if they’re spaced no further than 12” on center. “On center” is the term to measure from one joist to the next, starting from one center to the center of another.
How many joists is 12 feet?
A 12-foot long deck with joists 16 inches on center will require 10 joists.
