The janka hardness test from the austrianborn emigrant gabriel janka, 18641932 measures the resistance of a sample of wood to denting and wear. Janka wood hardness chart hosking hardwood flooring. The janka rating is a measure of the amount of force required to push a. The janka scale ranks the hardness of a wood species. The janka hardness test is the wood hardness scale that measures the hardness of wood.
The test figures out how many pounds per square inch, or psi, of force is needed to push the steel ball half way into the wood plank. The main difference between american and european beech is the coloring, european beech being. Mar 25, 2017 scaling page content in adobe acrobat pro dc posted on march 25, 2017 by karl heinz kremer before adobe acrobat pro dc, it was not possible to scale pages from e. Please practice handwashing and social distancing, and. The janka hardness test is a measurement of the force necessary to embed a. Janka hardness scale printable bamboo vs hardwoodhardness. The janka hardness scale runs from zero softest to 4,000 lbs hardest.
The scale was developed as a means for displaying the results of the janka hardness test. Janka hardness scale for wood flooring species county floors. Wood products are known for their natural beauty, but when selecting a type of wood for your next cabinetry, flooring, furniture or millwork project, it is important to also consider the level of durability by understanding the difference between wood types. Question is, how to resize the existing pdf page size to set 8. The actual number listed in the wood profile is the amount of poundsforce lb f or newtons n required to imbed a. In the uk, the primary way of measuring the hardness of a species of bamboo or wood is by using the janka hardness test.
Please practice handwashing and social distancing, and check out our resources for adapting to these times. Additionally, you can reduce the pdf file size by changing the quality parameter. If you refer to the janka hardness scale american beech is ranked just above red oak in hardness at 0, making it again an excellent choice for hardwood flooring. Mar, 2015 janka hardness scale printable bamboo vs hardwoodhardnessscale. The higher the force one needs in order to push the ball halfway into the wood, the harder it is. The janka scale gives a good indication of how well a wood species can be expected to withstand dents and dings. Although not exact, the scale is a good reference for which hardwood can. This number is given for wood that has been dried to. The janka test measures the amount of force required to embed a 0. Executive summary background the janka ball hardness test has been specified for solid wood in astm standard d 143 since 1922. Feb 18, 2015 the janka hardness scale is also an excellent indicator of the effort required to drive a nail through a particular type of wood. The resulting data is expressed in poundsforce, or lbf this industry standard assessment is designed to gauge the various wood species hardness, determine its suitability as flooring, and illustrate its tolerance to.
A harder wood will stand up to high traffic or heavy use better than a softer wood, but it will also be more difficult to sand or hammer a nail into. The janka hardness scale is a measurement of the force necessary to embed a. To see how different wood types rate in terms of hardness, use this. A woods relative hardness is determined with the janka rating system, which measures the force required to drive a. Scaling page content in adobe acrobat pro dc khkonsulting llc. Janka hardwood scale this scale is the worldwide standard for gauging the ability of various species of wood to endure normal wear and tear. The janka test measures the hardness of wood so that wood species can be compared to one another. Red oak is used as the standard and its hardness is 1,290 on the janka scale. The janka scale is a comprehensive chart of hardness ratings for a huge variety of wood species used for hardwood floors.
In an application, user can upload any pdf file and which has dimensions of 8. It was developed as a variation of brinell test measurement method of. Depending on the room where the flooring will be installed, a certain level of hardness may make it a more desirable choice. These figures are a good indicator of how resistant the wood is to denting and wear.
The number of pounds per square inch psi needed to. Shrink to printable area resizes only large pages to fit the paper and prints small pages as they are. The test computes the pounds of force lbf one requires to drive one 0. Nov 05, 2007 the janka hardness scale is a measurement of the force necessary to embed a. Estimating janka hardness from specific gravity for tropical.
The janka hardness values and hardness grades for some common wood species. Graduated janka hardness scale for hardwood flooring grades. The janka test was developed as a variation of the brinell hardness test. Ratings for both domestic and imported species are included in the scale. Testing is done on samples, not on actual flooring. If you have children or animals, very soft wood like pine. The standard calls for a specimen with a cross section of 2 by 2 in. Jun 22, 2015 in the uk, the primary way of measuring the hardness of a species of bamboo or wood is by using the janka hardness test. Janka hardness scale definition and applications man. Scale or resize printed pages in acrobat and reader. The number of pounds per square inch psi needed to push the steel ball into the wood determines the janka rating. The janka test measures the amount of force required.
It is the industry standard for gauging the ability of various species to tolerate denting and normal wear, as well as being a good indication of the effort required to work nail, saw, carve, etc. Similar to a laminate ac rating, the hardwood floor hardness determines the durability of the species. Wood hardness chart species alphabetical hardness species by hardness hardness mahogany, honduran 800 padauk 1725 mahogany, santos 2200 tabaccowood 1750 maple, hard north american 1450 rosewood, bolivian 1780 maple, ivory 1500 bamboo, carbonized 1800 maple, soft 999 hickory 1820 merbau 1925 pecan 1820 mesquite 2345 yellowheart 1820. Bamboo is a bit harder at 1,380 see my past blog on bamboo flooring is it hard or soft. Janka hardness test measure the hardness or density of wood. The janka hardness chart was created as a result of the janka hardness test. What is the janka hardness scale for bamboo flooring. A harder wood will stand up to high traffic or heavy use better than a softer wood, but it will also be more. Common red oak with an average janka rating of 1290 is the industry benchmark lor comparing the relative hardness of different wood species bamboo tested on morning star bamboo brand which uses a more mature bamboo 4 year minimum the most commonly used test to assess the hardness of wood is the janka rating. When selecting hardwood floors, consider your home or office layout and traffic patterns.
Woods with a higher rating are harder than woods with a lower rating. The test involves measuring the force required to embed a. The scale was created to show the janka hardness test results. Welcome to our janka hardness scale for bamboo and eucalyptus flooring page. The janka hardness test was designed to rate the relative hardness of wood on a scale of 0 to 4000. Hardwood flooring hardness guide janka hardness scale.
A common use of janka hardness ratings is to determine whether a species. Types of wood american hardwood information center. The janka chart is commonly used in the flooring industry to compare hardwood flooring types. Common red oak with an average janka rating of 1290 is the industry benchmark lor comparing the relative hardness of different wood species bamboo tested on morning star bamboo brand. The janka hardness test measures the resistance of a type of wood to withstand denting and wear.
All previous versions of acrobat had to offer was the crop tool, and its change page size option to either crop out a portion of the. Janka hardness scale for hardwood flooring graduated comparison chart. Estimating janka hardness from specific gravity for. Here we will present to you our hardwood flooring hardness guidelets begin. F101 janka hardness scale lumber liquidators flooring co. The diameter was chosen to produce a circle with an. Before adobe acrobat pro dc, it was not possible to scale pages from e. Janka hardness scale janka hardness measurements reflect the number of pounds pressure it takes to press a.
To give some quantification to the issue of wood species hardness, the lumber industry created the janka hardness scalea standard now widely accepted as the best means of ranking a woods hardness. In essence, the higher the number on the scale, the harder the wood. The janka scale has done a good job in giving a broad reference to relative hardness. Types of wood comparing american hardwoods, softwoods and tropical hardwoods.
It is the industry standard for gauging the ability of various species to tolerate denting and normal wear, as well. The higher the number, the harder and generally more durable the wood will be. This number is given for wood that has been dried to a 12% moisture content, unless otherwise noted. The janka hardness scale is a tool used to gauge the re. Yes, it is possible to scale the image to pdf page size, by specifying the image height and width in the draw image method. The janka rating scale was created to rank the various degrees of hardness throughout the different species of hardwoods. Fit to printable area scales small pages up and large pages down to fit the paper. Currently side hardness, determined using the janka test, is a primary method used to assess the suitability of wood species for use as residential.
A common use of janka hardness ratings is to determine whether a species is suitable for use as flooring. You can read my full disclosure at the bottom of the page. It is a complex test which consists of driving a small steel ball 11. The janka wood hardness scale is determined by measuring the amount of force that is required to press a steel ball 11. The janka scale measures the denting and wear resistance of a wood sample. Sometimes it helps to know a little about hardwood in general to get a better understanding of what species of wood will best suit the lifestyle you lead. The janka test measures the force n, lb f required to embed an 11. It is the industry standard for gauging the ability of various species to tolerate denting and normal wear, as well as being a good. On this page you can scale the entire pdf document or a single page to a3, a4, a5, b4, b5, tabloid, ledger, legal, letter and more. The janka hardness scale determines the hardness of a particular type of wood over another. In laymans terms it is a way to measure a woods resistance to denting. Janka hardness measurements reflect the number of pounds pressure it takes to press a. The test measures the force required to push a steel ball with a diameter of 11.
Janka hardness chart for exotic wood and domestic wood. The fact is not many people understand the testing, and even fewer look to improve upon it. Does hardwood floor hardness matter lauzon flooring. The janka hardness scale rating has become the industry standard for determining whether a given wood is suitable for flooring material. For wood hardness is a measure of resistance to dent and wear. I have to fix by code, not manually or commend line or external software. The janka test is a measure of the hardness of wood. Janka hardness scale definition and applications man of. In the united states, janka hardness astm d 14394 astm 2006 was initially used as a minimally destructive test for estimating the strength and stiffness properties of wood green et al. Janka hardness chart for exotic wood and domestic wood bell.
Acrobat can size the pages of a pdf to fit the selected paper size. Understanding the janka rating scale best laminate. Using the janka hardness scale to understand hardwood flooring. Strand woven bamboo and eucalyptus flooring, on average, have janka ratings upwards of 3,800, which is much higher than traditional wood flooring. The janka hardness scale is determined by a controlled test, performed to measure the force necessary to embed a. The thing it has solved is some of the issues that have evolved from it. To find this number, a steel ball is pushed halfway into a 2 x 2 x 6 wood plank. Page scaling lets you shrink or enlarge pages when you print. Mar, 2015 janka hardness scale printable bamboo vs hardwoodhardness scale. The scale was invented in 1906 by gabriel janka, an austrian wood researcher, and standardized in 1927 by the american society for testing and materials.
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