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.
What is a 4 by 4 wood?
So, a “4/4” board is four quarters, or 1 inch thick, an “8/4” board is eight quarters, or 2 inches thick, a “10/4” board is ten quarters, or 2.5 inches thick, etc. Board Foot: Rough sawn lumber is usually sold by the “board foot” (bd. ft.).
Why do they call it 5 4 lumber?
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.
What is the actual thickness of 5/4 lumber?
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.
Is a 4×4 actually 4×4?
While it is true that the actual size of a 4 x 4 board is 3 ½ x 3 ½, that is not a deceptive practice in my opinion. It is well known that lumber is sold based on nominal sizes, and the actual size of the boards is smaller than the nominal size.
What is quarter sawed lumber?
Quarter sawn wood or lumber typically has nearly parallel grain lines that cut across the short dimension of the board. This is due to the way the board gets mostly cut against the grain of the tree. Compare that to live sawn wood that ends up with gentle curves of gran across the width of each board.
What does BF mean in lumber?
1. Hardwood lumber is typically sold by the board foot, a unit of volume equivalent to a board that is one inch thick, one foot wide and one foot long, or 144 cubic inches.
What does S3S mean when buying a board?
The SxS designation simply refers to how many sides have been pre-surfaced. S2S= surfaced two sides, S3S = surfaced three sides and s4s = surfaced four sides.
Why is lumber not the actual size?
The “nominal” cross-section dimensions of a piece of lumber, such as 2 X 4 or 1 X 6, are always somewhat larger than the actual, or dressed, dimensions. The reason is that dressed lumber has been surfaced or planed smooth on four sides (called S4S). The nominal measurement is made before the lumber is surfaced.
How far can 5 4 decking span?
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.
Can I use 2×6 for deck boards?
Wood decking is commonly available in 2×6, 2×4, 5/4 x 6, and 5/4 x 4 profiles. 5/4 x 4 and 5/4 x 6 is produced specifically for decking and can be found milled with a radius or bullnose edge. 2×4 and 2×6 are thicker and stronger, but they also tend to be more expensive than a 5/4 board of the same width.
Why do 2×4’s have rounded edges?
2×4 have rounded edges as it’s very beneficial to the wood itself and those working with it. They reduce the number of injuries like unwanted splinters during the handling and manufacturing process and also ensure that the lumber stays looking its best all throughout until the customer sees it.
How wide is a 1×10?
1x Board Sizes
The larger 1x boards (1×8, 1×10, etc.) lose 3/4 inch in width. That means a 1×10 is actually 3/4 inch in thickness by 9 1/4 inches.
