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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.).
How wide is 4/4 lumber?
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.
Why is it called a 4 by 4 wood?
Hardwood lumber comes in thicknesses measured in quarters of an inch. 1″ lumber is called 4/4 (four quarters).
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).
What are the four grades of lumber?
Table 5: Lumber Grades for Hardwoods Grade Name Abbreviation Minimum Board Size First and Seconds FAS 6 in. x 8 ft. FAS One Face F1F 6 in. x 8 ft. Select SEL 4 in. x 6 ft. #1 Common No. 1 C 3 in. x 4 ft.
What’s the actual size of a 2×10?
Nominal vs. Actual Measurements of Dimension Lumber Nominal Size Actual Size 2 x 6 1 1/2 x 5 1/2 inches (38 x 140 mm) 2 x 8 1 1/2 x 7 1/4 inches (38 x 184 mm) 2 x 10 1 1/2 x 9 1/4 inches (38 x 235 mm) 2 x 12 1 1/2 x 11 1/4 inches (38 x 286 mm).
What does 2×4 mean?
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. Now, most timber is milled and planed to give it a little more of a finished look, and a little more of a consistent size and profile.
Is a 4×4 actually 4×4?
But that doesn’t mean they actually mean the same thing. 4×4 and 4WD both mean that power is sent to four wheels to control the vehicle, but it’s a little more complex than that. All 4×4 vehicles have 4WD, but not all 4WD vehicles are 4x4s.
Is 4×4 really 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 are 4×4 boards used for?
Framing and Structural Lumber The most commonly used lumber, structural lumber, are the 2-foot x 4-foot and 4-foot x 4-foot boards used in everyday DIY and construction projects. Framing and structural lumber follows standard building dimensions (thickness and width).
Why do they call it 5 4 decking?
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.
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.
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.
Is #1 or #2 lumber better?
Dimensional Lumber Typically wood that is two or more inches thick is graded only for strength, denoted by #1, #2 and so on. So the general rule of thumb for lumber grades is this: the lower the number, the more strength and better appearance.
What is #3 grade lumber?
#3 Grade: When appearance is of no concern, this construction grade will contain large knots, excessive wane, occasional knot holes, and manufacturing defects.
What is the best grade of 2×4?
2 Lumber. No. 2 lumber is the most common grade for framing. Lumber of this grade contains few defects, but knots are allowed of any quality as long as they are well spaced and do not exceed the size regulations.
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.
What size is a 1×4 board?
3/4″ x Nominal Size Actual Size 1×4 3/4″ x 3-1/2″ 1×6 3/4″ x 5-1/2″ 1×8 3/4″ x 7-1/4″ 1×10 3/4″ x 9-1/4″.
