Ryder Services supply D30 and D40 hardwood timbers throughout the UK. Grade C A Grade C railway sleeper has all the characteristics of the above grades but can have more serious damage to most sides. All Rights Reserved. We pride ourselves in the quality grade of oak we can supply and even offer D30 and D40 grade to order as well. Air Dried Oak However, it is generally understood that it is very difficult for timbers of 100mm (4″) square, or greater size, to dry out properly inside. Further to our green oak we can also supply a broad range of air dried constructional oak cut to size from the stock we hold on site. For a full specification Oak Beams & Grades Explained Green Structural Oak Green structural oak is simply fresh cut oak that has been felled in the last 3 - 6 months. At Ryder Services we also supply hardwood timbers which are graded up to D70, including Greenheart, Ekki, Opepe, plus many other species. The only structural grades that can be applied to Oak are D40, D30 & Fail. The grade of our air dried oak beams is to the BS 5756, grades being THA D40, THB D30, TH1 D30 and TH2, thus giving you peace of mind that the oak and oak beams you are using are strong enough for the intended task. At Ryder Services we also supply graded hardwood timbers, including Greenheart, Ekki, Opepe, plus many other species. D30 and D24 are European grades. Beech – D30 European Beech is a durable timber which has a straight grain, with a fine to medium uniform texture. Oak is part of the Fagaceae family, it is also known by it's latin name of Quercus Robur and it originates from the UK and Europe. Its main uses include furniture, boat building, turned objects, flooring, stairs and cabinetry. Oak is a very versatile timber, with many uses including, blocks, sleepers, wedges, boat building, beams, bogmats, garden furniture, joinery, furniture and flooring. Subject to availability. Also known as D30 Construction Grade Excluded: unsound knots, end shake, frost crack, ring shake, star shake, curly grain, bark pocket, unsound sapwood, brown pith, brown streak, rot, holes. Note: the TH2 grade of oak does not meet the requirements for the D30 strength class. The grade is either finished with A for exceptional quality oak or with a number 1-4 with 4 being the lowest quality of oak. D30 is equivalent to the European QPA visual grade. 1-3 year air dried oak beams benefits from being suitable dry but without excessive distortion or insect damage which you can find on very dry oak timber. Traditional Beams are one of the few suppliers holding large stocks of air dried structural oak beams in the UK. The beams for construction tend to be fresh sawn or green which means that they are in fact wet and while We have two qualified graders on hand to grade timber if required. It is equivalent to … They can also either be D30 or D40 or fail, indicating the mechanical grade. So we are able to supply oak graded to TH1, TH2, THA & THB which covers D30-D60. Strength Grading Softwood Most carcassing (constructional) softwood is imported already stamped with a strength grade of either C16 or C24. THB is the standard grade we get asked for most and is structurally rated at D30. European Beech is a durable timber which has a straight grain, with a fine to medium uniform texture. The colour varies from tan to biscuit, it is usually straight grained but irregular or cross grained material can occur. For more information on the specification please see the link below: We have a wide variety of lengths and sizes of C16 and C24 timbers in stock, for more information on our graded timber contact our experienced sales team on 01683 221082 or alternatively email us on info@ryderservices.biz. Oak has a very good steam bending classification but is liable to blue stain if in contact with iron compounds. Subject to availability. Being able to grade our own Green Oak means we can grade as we Expect a larger amount of bigger knots and piths in the lower grades compared to the higher grades. Semi seasoned / weathered structural grade oak beams (moisture approx 20% – 60%). European Oak D30/40 720kg 10100 N/mm² Durable Garapa D40 790kg 15880 N/mm² Durable Greenheart D70 1030kg 21000 N/mm² Very durable Ipe D60 1040kg 22760 … This code indicates the grade and size of the oak beam. Our structural oak beams are typically air dried for 1-3 years making them perfect for both internal and external use. For more information on our graded timber contact our experienced sales team on 01683 221082 or alternatively email us on info@ryderservices.biz. Oak Framed Garage Kits Our oak framed kit garages are of high quality and designed for quick assembly on site. Structural grading in oak is broken down in to two sizes with two qualities in each. For a full specification sheet please click here, Iroko is a very durable hardwood, it has excellent strength properties, compairing well with teak. Oak is a fairly hard, heavy and dense wood making it very durable. The alternative Malaysian name for the wood of S. pauciflora is nemesu. Sections with a cross section above 20000mm2 (32" sq inches) (for example larger than 8"x4") can be graded THA or THB. The table below provides laboratory values for several properties of wood that are associated with wood strength. Although an individual piece of Oak may be capable of achieving the strength required to qualify as a D70, D30 and D40 are the only grades that can legally be applied to an oak beam. With our sawmill facilities we can cut hardwood timber and grade to suit your specific requirements. 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