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Nominal vs. Actual Measurements of Dimension Lumber Nominal Size Actual Size 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) 4 x 4 3 1/2 x 3 1/2 inches (89 x 89 mm).
How wide is an actual 2×8?
Lumber Dimensions: Nominal vs. Actual Nominal Size Actual Size 2×4 1-1/2″ x 3-1/2″ 2×6 1-1/2″ x 5-1/2″ 2×8 1-1/2″ x 7-1/4″ 2×10 1-1/2″ x 9-1/4″.
What does 2 x8 mean?
Dimensional Lumber Nominal Size Actual Size 2×3 1-1/2″ × 2-1/2″ 2×4 1-1/2″ × 3-1/2″ 2×6 1-1/2″ × 5-1/2″ 2×8 1-1/2″ × 7-1/4″.
How wide is a 2×8 pressure treated?
x 8 in. x 8 ft.; Actual: 1.5 in. x 7.25 in. x 96 in.).
How wide is an 8 foot board?
Common Board (Actual Dimensions 0.750 in. x 1.5 in. x 96 in.).
What is the actual width of a deck board?
The most common or standard deck board width is 6-inch wide planks based on square-foot coverage, labor, and material cost.
How far can a 2×8 span?
Depending on various factors, the maximum span for a 2×8 floor joist is 16′ 6”. The maximum span for roof rafters is 23′ 9”. For headers, the maximum span is 11′ 2”. Finally, a single deck beam has a maximum span of 5′ 11” and double maxes out at 8′ 9”.
Why are 2×4 not actually 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″.
What size is dimensional lumber?
Technically, you can define dimension lumber as sawed softwood lumber from 2 to 5 inches (5 to 12.7 centimeters) thick and from 4 to 12 inches (10.2 to 30.5 centimeters) wide. The length of dimension lumber can range from 6 to 24 feet.
What is the actual size of a 2×4 board?
The true measurement of a 2×4 is actually about 1.5×3. 5. When the board is first rough sawn from the log, it is a true 2×4, but the drying process and planning of the board reduce it to the finished 1.5×3. 5 size.
What sizes does pressure treated lumber come in?
Pressure Treated Wood 1″ X 4″ (3/4″ X 3-1/2″) 1″ X 6″ (3/4″ X 5-1/2″) 1″ X 8″ (3/4″ X 7-1/2″) 1″ X 10″ (3/4″ X 9-1/2″).
What is the standard length of decking boards?
The length of composite decking boards comes in 6′, 12′, 16′ and up to 20′. The width of the composite board also varies and can range from 1 to 2 inches thick and 4 to 6 inches wide.
What is the widest 2x lumber?
Nominal vs. Actual 2x Lumber 2×6 1-1/2 x 5-1/2 2×8 1-1/2 x 7-1/4 2×10 1-1/2 x 9-1/4 2×12 1-1/2 x 11-1/4.
How long is a 2x4x8 board?
Nominal vs. Actual Lumber Size Chart for Softwoods* Nominal Depth x Length Actual Depth x Length 2×4 1½” × 3½” 2×6 1½” × 5½” 2×8 1½” × 7¼” 2×10 1½” × 9¼”.
How long is a 2x4x8 stud?
2×4 – 8′ Lengths Although not quite as common as the pre-cut studs I described above, my local Home Depot has a fairly good selection of 2x4s that measure 8 feet (96”). These come in handy for projects where I’m building something around a 4×8 sheet of plywood.
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 wide is 5 quarter decking board?
5/4 Decking Actual Dimensions 1″ x 5.5.” If you use 5/4 decking, you are getting two-thirds of the board of a 2×6.
How many deck boards do I need for a 12×12 deck?
For example, a 12-foot x 12-foot deck of 5/4 x 6 pressure treated wood decking on 16 inches on center spacing of joists will require: A 12-foot long deck with joists 16 inches on center will require 10 joists. 20 fasteners x 26 (number of rows of decking) = 520 fasteners. Add 10 percent to be safe.
Should I use 2×6 or 2X8 for deck?
For upper-level decks, 2×10 is recommended as the minimum size to use for strong guard post connections. 2×6 joists should only be used on ground-level decks that do not require, and will not provide for, any guards. Most decking is not strong enough to support longer spans than 16″.
How far can I cantilever a 2X8?
Deck Joist Cantilever Rules and Limits Joist Spacing (o.c.) 12″ Douglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir 2×8 1′-8″ 2×10 2′-10″ 2×12 4′-4″ Redwood, Western Cedars, Poderosa Pine, Red Pine 2×6 9″.
