2 edition of strenght properties of European redwood and whitewood. found in the catalog.
strenght properties of European redwood and whitewood.
W. M. Hudson
|Statement||[by] W.M. Hudson.|
|Series||Ministry of Technology. Forest Products Research. Special report, no. 24|
|LC Classifications||SD45 .P72 no. 24|
|The Physical Object|
|Pagination||iv, 25 p.|
|Number of Pages||25|
|LC Control Number||67089030|
Strength classes; C14 C16 C18 C22 C24 TR26; European redwood/whitewood (pine/spruce) BS visual: GS: SS: BS EN parts machine: British pine: BS visual: GS: SS: BS EN parts machine: British spruce: BS visual: GS: SS: BS EN parts machine: British Douglas fir: BS visual: GS: SS: British larch: BS. WOOD SPECIES:Nordic whitewood (Picea abies) and redwood (Pinus silvestris) STRENGTH GRADE:Europe: GL24, GL28, GL32 Japan: EF, EF etc. STRENGHT PROPERTIES N/mm 2GL24cGL28cGL32c BENDING.
Strength classes Timbers of similar strength properties are grouped together into strength classes. These are defined in BS EN , which includes six strength classes for hardwoods, D30 - D70, see Table 2 wood Information Sheet Timber strength grading and strength classes gives more details. The names 'redwood', 'whitewood' are loosely used for a variety of woods. 'Redwood' is the British Standard name for scots pine i.e. the most common joinery timber used. Best is imported from northern europe so may be called 'baltic redwood' or russian, finnish or swedish redwood. Also has been called red deal, yellow deal, Archangel fir, swedish.
European Redwood is a popular wood for use in Joinery, cladding and decking import and distribute large volumes machined to merchants. Call Us: Or | Email: [email protected] Red oak is hard and heavy, with high crushing strength and medium bending strength. It is an ideal wood for steam bending. This type of oak works well with tools and machines, and it is easy to stain and polish to a good finish. It is also moderately easy to treat with preservatives.
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The strength properties of European redwood and whitewood by W. Hudson,H.M.S.O. edition, in English The strength properties of European redwood and whitewood.
( edition) | Open. The Strength Properties of European Redwood and Whitewood Issue 24 of Special report (Forest Products Research Laboratory (Princes Risborough, Buckinghamshire))) Issue 24 of Special report, England). Forest Products Research Laboratory (Princes Risborough [Ministry of Technology.
Forest Products Research. Special Report. ] Author: W. Detailed data on strength and associated properties of redwood 34 Explanation of terms and methods employed 41 Literature cited 48 INTRODUCTION Eedwood is one of the important commercial woods of the United States.
The combination of desirable qualities, including relatively high mechanical properties, medium weight, low shrinkage, ease of.
Redwood takes fixings well, whereas whitewood takes them only satisfactorily. Common uses Redwood is used for all kinds of construction work, with better grades being employed for furniture.
In contrast, whitewood is commonly used for boxes, crates or carcassing with a lot going into the manufacture of pulp and paper. Aca psi ; Amendoim/Yba psi ; Andir psi ; Angelim Pe psi ; psi ; Australian Cypr psi ; Bacana Cayenne.
losophy of how properties for engineering design are derived. The derived properties are then used in one of two design formats: (a) the load and resistance factor design (LRFD), which is based on a reference strength at the 5th percentile 5-min bending stress (AF&PA ), or (b) the allowable.
The following table is Structural Lumber Wood Engineering Properties. Modulus of Elasticity of Wood, Wood Engineering Design Data. Modulus of elasticity also referred to as Tensile Modulus or Young's Modulus.
Elastic ratios for various wood species at approximately 12% moisture content - see bottom of webpage. Related Lumber Wood Engineering Data. Strength Properties When wood is loaded to higher stress levels beyond the elastic range, plastic deformation or failure occurs.
Five strength properties that are commonly measured for design purposes include bending, compression parallel and perpendicular to the grain, tension par allel to the grain, and shear parallel to the grain. The table below provides laboratory values for several properties of wood that are associated with wood strength.
Note that due to inadequacies of samples, these values may not necessarily represent average SpeciesAverage Specific Gravity, Oven Dry SampleStatic Bending Modulus of Elasticity (E)Impact Bending, Height of Drop Causing FailureCompress.
Parallel to Grain, Max. The kind of project you are working on will determine the type and grade of whitewood that you’ll use. Whitewood is not a particular tree species but rather a category of trees with similar properties.
They include the following trees: Pale wood trees – yellow pines, spruces, silver firs, basswoods, tulip trees and others.
Table 1. Technical data for redwood and whitewood PoyRPERT RwooEDwooD wHITED Moisture content (%) 12 12 Density (kg/m3) Tensile strength (MPa) 90 3 Bending strength (MPa) 87 75 Compression strength (MPa) 46 40 6 Shear strength (MPa) 10 9 Impact strength (kJ/m2) Hardness (Brinell) II 4 I Picea Abies - Spruce (Commonly known as Norway Spruce, Sitka Spruce or European Whitewood).
Timber type: Softwood; Imported from: Mainly imported from Sweden, Finland, Norway, Russia, Germany, Latvia, Estonia. Density: Lighter and stronger than Redwood.
Slightly durable making it ideal for construction purposes. Naturally resists treatment. Uses. "European redwood" is a trade name used in the UK for Pinus sylvestris that is imported.
Home-grown Pinus sylvestris, native to Scotland, is referred to as "Scots pine." By whatever name, it is considered easy to work with and is used to make a variety of items. Tension strength: 95 N⁄mm 2: Compression strength: 44 N⁄mm 2: Brinell hardness perpendicular to the fibres: 44 N⁄mm 2: Janka Hardness: kN: Nail withdrawal strength in N per mm depth and mm diameter: N⁄mm 2: Natural durability and treatability (according to en ) Fungi: Class 4 –poorly durable: Dry wood borers: susceptible: Termites: Class S susceptible.
Looking for information on the durability of a certain wood. Our Timber Durability Chart & Database has all of the information you're looking for. The Timber Durability chart contains 5 classifications, with each class determining how long each timber listed will last.
See the chart &. European Whitewood Our range of timber products includes an in depth stock of European Softwoods in both joinery and carcassing grades.
For the joinery and finishing customer we offer Scandinavian Redwood in Fifths and Unsorted Grades sourced from well managed and sustainable forests. Structural Lumber - Properties - Properties of structural lumber Timber - Structural Lumber Section Sizes - Basic size, area, moments of inertia and section modulus for timber - metric units Wood - Moisture and Compressive Strength - Red Spruce, Longleaf Pine and Douglas Fir - moisture content and their compressive strength.
Test results for other properties are statistically evaluated per ASTM standards so that the strength levels listed are expected to be exceeded by 95% of the pieces in the various grades and sizes.
Standard ASTM reductions have been made to values to account for safety and duration of load. Mechanical Properties. Wood strength, including the relationship between grain direction and strength, specific gravity as an indication of wood strength, and additional ways to measure wood strength.
Part of the Workshop Companion, a collection of information on wood, woodwork, woodworking skills, woodworking materials, and woodworking plans that together form the core knowledge needed by woodworkers, furniture.
Whitewood can be perceived differently in different countries since one can get this wood from different trees. These trees include spruces, tulip trees, basswoods, silver firs, yellow pines and many others. Identifying Whitewood is easy. You only have to look for that white grain that is isolated from tree’s saps.
Given the number of international vendors out there, that "european" definition (by translation) may have just crept in. Seems like I first started seeing "whitewood" over in the rough shelving aisle, and that it was an apt description, some sort of generic, blonde, wide-spaced growth ring, former tree, product.Mechanical Properties of Wood David W.
Green, Jerrold E. Winandy, and David E. Kretschmann Contents Orthotropic Nature of Wood 4–1 Elastic Properties 4–2 Modulus of Elasticity 4–2 Poisson’s Ratio 4–2 Modulus of Rigidity 4–3 Strength Properties 4–3 Common Properties 4–3 Less Common Properties 4–24 Vibration Properties 4–Redwood lumber is very soft and lightweight, with a decent strength-to-weight ratio.
It is also exceptionally stable, with very little shrinkage or seasonal movement. The mechanical values listed at the top of the page represent the averages between both old-growth lumber and second-growth lumber.