Forgray cat, Roof Online Editor • Last updated 8 Oct 2022
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Table of contents
- Weighting factors 2 × 10
- Actual dimensions of a 2×10
- How to calculate the weight of 2 × 10
- About this 2×10 weight chart
- Table: Weight 2×10 by wood type and length
- related pages
- References for weight 2×10
Weighting factors 2 × 10
The 2×10 weight mainly depends on the length of the board, the moisture content of the wood, and the species of tree the wood was made from. Pressure treating the wood with a preservative also results in a small amount of weight being added after the panel has had time to dry following the treatment process.
Broad length: The length of the 2x10 is obviously the most important factor in determining the weight of the 2x10. This is self-explanatory.
moisture content: The moisture content of the wood is also an important factor, but since all woods tend to reach their moisture content on air drying, fluctuations in moisture content can be considered transient.
Green wood has a higher moisture content than air-dried wood, and air-dried wood has a higher moisture content thankiln dried wood.
Green wood has a moisture content of more than 19%. Depending on the actual moisture content of a particular piece of wood, due to thehow to calculate the moisture content of wood, green wood can weigh more than 50% more than the same wood when air dried.
The typical weight of fresh wood is about 10% to 30% higher than the dry weight of wood of the same species.
Kiln-dried wood (also called kiln-dried wood) typically starts out with a slightly lower moisture content than air-dried wood, but slowly absorbs enough moisture from its environment to eventually reach the same moisture content as the air-dried wood in the same environment.
types of wood: The species of wood from which the wood comes is the third important variable in determining the weight of 2x10s. A 10 foot long air dry 2x10 outdouglas fir(strand type) weighs about 33 pounds. A 10 foot long air dry 2x10 outfir screenhe must weigh about 27 pounds. It's a big weight difference.
pressure treatment: Pressure treated 2x10s can be remarkably heavy when you first buy them. Because when you find them in the store, they are usually freshly treated or have only dried a few weeks.
Due to the weight of water added to the wood during the pressure treatment process, freshly treated planks weigh up to 75% more than untreated planks.This weight is temporary.. The panel will regain (almost) its original weight if allowed to air dry in the weeks or months following treatment.
The 2x10 weight for treated wood will be approximately 0.4 to 1.5% higher than the 2x10 weight for untreated wood of the same species after drying.
Actual dimensions of a 2×10
A 2x10 isn't really two inches by ten inches, despite what it says. That's 2" x 10".nominalboard dimensions.
HimrealDimensions of a 2x10 are 1.5" x 9.25". Here's why:
In fact, when a board is first cut, it is approximately the width and depth (the nominal dimensions) that the final piece of wood will be known for.
After the first rough cut, two by ten is actually about two by ten centimetres.
The next step in the milling process is air drying orofengetrocknetGreenwood to reduce the moisture content of the wood. This shrinks the tables and reduces the actual dimensions. This is done, among other things, to ensure that when the wood is finished and sold, its dimensions are reasonably stable and the board does not continue to shrink too much.
After drying, the boards are planed and smoothed, the corners being slightly rounded.
This further reduces the actual dimensions; In addition, the lumberjack can be sure that the end product has the required dimensionsIndustrial Standards. At 2x10, the industry standard is 1.5" x 9.25".
How to calculate the weight of 2 × 10
Step 1:Determine the type of wood.. To determine the weight of the 2x10, you need to know what type of wood the 2x10 is made of.
step 2:Consult the density of the wood.. Once you know what type of wood you are dealing with, look up the wood's density in pounds per cubic foot.Weights made from various woods grown in the United Stateshas an extensive table of wood species you can consult, or is there a range of themother resourceson the internet with the same information.
step 3:Calculate the volume in cubic inches of a length of 2 × 10 feet. This value is used to calculate what percentage of a cubic foot is 1 foot long 2x10. Since a 2x10 is 1.5 inches by 9.25 inches, a foot long 2x10 has a volume in cubic inches of 1.5 inches x 9.25 inches x 12 inches, or 166.5 cubic inches.
Level 4:Find what percentage of a cubic foot is the volume of a length of 2 × 10 feet. A cubic foot equals 12 inches x 12 inches x 12 inches, or 1728 cubic inches. A 2x10 has 166.5 cubic inches per foot. 166.5 is 1/10.3784 of 1728 or 9.6354% of a cubic foot (166.5/1728 x 100 = 9.6354).
step 5.Find 9.6354% of the density in pounds per cubic foot of the type of wood your 2x10 is made of.. Let's say you're trying to estimate the weight of a 2×10 made from ponderosa pine (also called western yellow pine). You look up the density of the ponderosa pine and see that it's 28 pounds per cubic foot. Multiply 28 pounds by 0.096354 to get 2.6979 pounds. We would round up to £2.7 for simplicity. So 2.7 pounds is the weight per foot of a 2x10 made of ponderosa pine.
step 6:Multiply by the length of 2×10. If your 2x10 is 14 feet long, multiply 14 times 2.7 pounds to get 37.8 pounds.
And there you have it, a 14 foot 2x10 ponderosa pine weighs 37.8 pounds.
About this 2×10 weight chart
This table contains approximate weights (own weight, dead weight) of 2x10s, made from the most common wood species in the most common lengths used in US construction.
The values given in the table are intended to give a general idea of typical 2×10 weights and should not be used where exact values are required for critical engineering calculations. 2x10 weights are for air dried wood; Kiln-dried wood weighs slightly less, and green wood can weigh much more (but should eventually reach air-dry weight).
If accuracy is required, always refer to the specification sheet for the actual specific product you intend to use or consult the technical department of the wood manufacturer or timber company.
You can see2x10 na Home Depot. The approximate weight of the pieces of wood for sale are usually given in the product descriptions, so this can be a really good source for calculating the weight of 2×10s.
Table: Weight 2×10 by wood type and length
|Weight of 2 × 10 lumber by species and length|
|(Average dry weight, 12% moisture content)|
|wood type||2 × 10 length in feet (2 × 10× number of feet)|
|These are the most common types of wood used in construction in North America.||Weight|
|pressure treated wood||Pressure Treated (Retreated)||7.03 pounds||42.18 pounds||56.24 pounds||70.30 pounds||84.36 pounds||98.42 pounds||112.48 pounds|
|Pressure treated (after air drying)||4.01 pounds||24.06 pounds||32.08 pounds||40.10 pounds||48.12 pounds||56.14 pounds||64.16 pounds|
|Cedar||western red cedar||2.22 pounds||13.32 pounds||17.76 pounds||22.20 pounds||26.64 pounds||31.08 pounds||35.52 pounds|
|douglas fir||Douglas fir (coastal type)||3.28 pounds||19.68 pounds||26.24 pounds||32.80 pounds||39.36 pounds||45.92 pounds||52.48 pounds|
|Douglas fir (mountain species)||2.89 pounds||17.34 pounds||23.12 pounds||28.90 pounds||34.68 pounds||40.46 pounds||46.24 pounds|
|fir||noble fir||2.51 pounds||15.06 pounds||20.08 pounds||25.10 pounds||30.12 pounds||35.14 pounds||40.16 pounds|
|subalpine Tanne||2.22 pounds||13.32 pounds||17.76 pounds||22.20 pounds||26.64 pounds||31.08 pounds||35.52 pounds|
|white spruce||2.51 pounds||15.06 pounds||20.08 pounds||25.10 pounds||30.12 pounds||35.14 pounds||40.16 pounds|
|hemlock||Berg Schierling||3.18 pounds||19.08 pounds||25.44 pounds||31.80 pounds||38.16 pounds||44.52 pounds||50.88 pounds|
|western hemlock||2.79 pounds||16.74 pounds||22.32 pounds||27.90 pounds||33.48 pounds||39.06 pounds||44.64 pounds|
|larch||western larch||3.47 pounds||20.82 pounds||27.76 pounds||34.70 pounds||41.64 pounds||48.58 pounds||55.52 pounds|
|pino||Pino Lodgepole||2.79 pounds||16.74 pounds||22.32 pounds||27.90 pounds||33.48 pounds||39.06 pounds||44.64 pounds|
|Ponderosa-Kiefer||2.70 pounds||16.20 pounds||21.60 pounds||27.00 pounds||32.40 pounds||37.80 pounds||43.20 pounds|
|Southern Yellow Pine (Loblolly)||3.66 pounds||21.96 pounds||29.28 pounds||36.60 pounds||43.92 pounds||51.24 pounds||58.56 pounds|
|Southern Yellow Pine (Long Leaf)||3.95 pounds||23.70 pounds||31.60 pounds||39.50 pounds||47.40 pounds||55.30 pounds||63.20 pounds|
|Southern Yellow Pine (short leaf)||3.66 pounds||21.96 pounds||29.28 pounds||36.60 pounds||43.92 pounds||51.24 pounds||58.56 pounds|
|Southern Ponderosa Pine (slash)||4.63 pounds||27.78 pounds||37.04 pounds||46.30 pounds||55.56 pounds||64.82 pounds||74.08 pounds|
|fir||Picea de Engelmann||2.22 pounds||13.32 pounds||17.76 pounds||22.20 pounds||26.64 pounds||31.08 pounds||35.52 pounds|
|fir screen||2.70 pounds||16.20 pounds||21.60 pounds||27.00 pounds||32.40 pounds||37.80 pounds||43.20 pounds|
|white spruce||2.70 pounds||16.20 pounds||21.60 pounds||27.00 pounds||32.40 pounds||37.80 pounds||43.20 pounds|
About the author
gray catis a senior roofing consultant and vice president ofMoriarty Corporation, an award-winning building envelope consultancy founded in 1967. It is also the publisher of the Roof Online website.
Mr. Gray has over 25 years experience in the roofing industry with training and hands-on experience in roof safety, roof inspection, roof condition assessment, estimation, roof design and specification, roof installation, quality control, maintenance and roof repair, and roof repair. wealth management.
He was awarded the Roof Observer Certificate (RRO) Professional qualification in 2009.
He also served as an infantry paratrooper in 82Dakota do NorteAirborne Division and attended Cornell University.Read the full biography.
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References for weight 2×10
- Weights made from various woods grown in the United States– Forest Products Laboratory, United States Forest Service, USDA
- Wood Handbook, Wood as a construction material– Forest Products Laboratory, United States Forest Service, USDA