Sep 21, 2006 all surfaced with 25mm wbp external plywood, it gets wet but drys quicklyso after 7 years a couple of boards untreated except pva on the edgesshowed enough spnonginess to need replacing, so went back to the same merchant not screwfixand purchased some new boards, wbp external, less than two years later these same board boards were really. The terms waterproof or wbp weather and boil proof are obsolete and. There is some confusion among specifiers concerning the properties of exterior grade plywood. Apa 1981 and represent a consensus opinion of the makers, sellers, and users of plywood products as well as other concerned parties. Plywood sheets builder depot supply a comprehensive range of premium quality wbp plywood including 8 x 4 plywood sheets. There is always an odd number of veneers and each ply is at a right angle to the one below, this gives the material its strength. Wbp is the acronymn for water boiled proofing a form of treatment for making polywood to an exterior grade and water resistant the bs is the documented standard by which is is tested and may apply to many materials as it is the test and not tthe material necessarily that is the criteria of the bs test. Birchply film faced plywood film faced birch plywood is ultimate in plywood having excellent physical and mechanical properties. They resist bending or deflection, racking or shape distortion and impact damage. All physical properties change from panel to panel depending on the natural characteristics of the wood used to make the panel. Jun 12, 2001 does anyone have specific technical data covering material properties like flexural strength, tensile, compressive etc the plywood will be sandwiched between inner and outer skins of fiber reinforcement, but need to know the ply props in order to determine the overall laminate strength. Fauhan rosli, a,b, che mohd ruzaidi ghazali, b mohd mustafa al bakri abdullah, a,b, and kamarudin hussin b,c due to the shortage of solid wood as a raw material of plywood and the abundance of oil palm trunk opt waste in malaysia, opt has. Pdf physical and mechanical properties of plywood produced. When cured, the resin may be disposed of on an ordinary landfill.
To build the tool totes, start by cutting the ends to size, as shown in figure 1. Our grade is bbwge the grade of our plywood riga ply are defined according to technical specifications developed in accordance with sfs 24. The more veneers used, the stronger the plywood becomes. Plywood properties pdf plywood properties pdf plywood properties pdf download. En 3142 class 3 exterior din 687053 bfu 100 bs 6566 part 8 wbp formaldehyde emissions. It is an engineered wood from the family of manufactured boards which include mediumdensity. Birchply european wbp exterior plywood highlights specification applications. Brochures we use cookies on this website to ensure the best user experience and to target personalised content and relevant advertising.
Where, f 4025 means basic bending working stresses are from 38 to 60 nmm. Any wood defects have been repaired with synthetic filler, so the veneer can be painted, making it ideal for furniture or cabinet doors. Latvian birch plywood has a wide range of applications. Agrade plywood features a smooth, sanded surface without knots. Panel strength properties metsa wood form is a ce marked product and its strength and elasticity properties are identical with the metsa wood birch standard plywood properties. You can approve cookies by pressing the button on the righthand side or choose another option by clicking on this link. Apatrademarked plywood is suitable for a variety of end uses including subflooring, singlelayer flooring, wall and roof sheathing, sheathing ceilingdeck, structural insulated panels, marine applications, siding, webs of wood ijoists, concrete forming, pallets, industrial containers, mezzanine decks, and furniture. Physical properties and mechanical characteristics. Guidelinewood ijoist asd manual for engineering wood. This product is dispatched from our warehouse and is available for instore purchase. Comparison of a load bearing capacity for composite sandwich plywood plates. While it can be tailored to suit an extensive range of applications, the normal product consists of at least 3 plies, with the grain in the alternate plies running at right angles. Because of their split resistance, wood structural panels possess excellent fastenerholding properties and can be nailed very near panel edges.
Plywood datasheet, plywood pdf, plywood data sheet, plywood manual, plywood pdf, plywood, datenblatt, electronics plywood, alldatasheet, free, datasheet, datasheets. Film faced plywood is mainly used in construction projects for civil work which includes form work, slab work and any other application viz. All surfaced with 25mm wbp external plywood, it gets wet but drys quicklyso after 7 years a couple of boards untreated except pva on the edgesshowed enough spnonginess to need replacing, so went back to the same merchant not screwfixand purchased some new boards, wbp external, less than two years later these same board boards were really. Industrial plywood, was developed by the standing committee for voluntary product standard ps1 in accordance with procedures of the u. Specification of plywood and performance criteria hanson. Plywood is a material manufactured from thin layers or plies of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. Plywood properties pdf fied into the following categories. Nominal panel thickness table b assists in calculation of geometric crosssectional properties.
Urea formaldehyde glued products have slightly higher values but they still fulfil the requirements of the most demanding european standards relating to formaldehyde emission and content. Wbp plywood using ordinary phenolic resin glue can handle boiling water for one to three days. A is the best and most expensive, and d the least expensive. The wood component of these products may consist of alder, amescla, aspen, beech, birch, cottonwood, fir, gum, hemlock, hickory, maple, oak, pecan, pine, poplar, spruce, walnut andor western red cedar. It is bonded with thermosetting, exterior quality phenolic resin adhesives commonly known as wbp weather and boil proof and is compliant. This article by dr vic kearley of trada seeks to clarify the situation and outline improvement actions that are underway most confusion arises from a misinterpretation of bs en 636.
Plywood material safety data sheet for wbp plywood page 4 of 4 1st november 2011 no data available disposal of waste to in accordance with environmental quality scheduled waste regulation 1989 and other guidelines issued by doe andor local authorities. The convention to indicate grain direction is used whereby the first dimension shown is the direction of the surface veneer grain. Surface roughness, tensile strength parallel and perpendiculartograin orientation of veneer sheets before and after compression process were. Characteristics of oil palm trunk opt and quality improvement of palm trunk plywood by resin impregnation. Metsa wood plywood panels are bonded with a weather and boilresistant phenol formaldehyde adhesive wbp, bfu, aw, exterior. Plywood is an assemblage of wood veneers bonded together to produce a flat sheet. High density wood with superior mechanical properties are used to manufacture of sarkar wbp plywood. Wbp plywood made with ordinary melamine rather than phenolic resin can maintain lamination in boiling water for between four and eight hours. Bendy plywood is the latest introduction for the furniture. Does anyone have specific technical data covering material properties like flexural strength, tensile, compressive etc the plywood will be sandwiched between inner and outer skins of fiber reinforcement, but need to know the ply props in order to determine the overall laminate strength. A wide range of engineering properties are used to charac terize the. Face veneers can be both long grain and cross grain. Some of the interlamite adhesives will survive a 1 hour boil. The objective of this study is to evaluate some of the physical and mechanical properties of plywood manufactured from compressed veneer of birch betula pubescens and alder alnus glutinosa using a cold rolling process.
How to choose the correct plywood plywood is a sheet material manufactured by gluing together several thin layers of softwood or hardwood veneers. Characteristics of oil palm trunk opt and quality improvement of palm trunk plywood by resin impregnation, biores. Superior bond strength between veneers, virtually unaffected by moisture and dampness. Abstract due to the shortage of solid wood as a raw material of plywood and the abundance of oil palm trunk opt waste in malaysia, opt has become one of the potential replacements for timber. Pdf comparative study on physical and mechanical properties of. Pdf plywood becomes very important material for various structural purposes in bangladesh and used as a substitute of solid wood. Our collection includes general use hardwood plywood, moisture resistant marine plywood, exceptionally strong birch ply, laminated ply and shuttering ply for encasing concrete. Woodbased panels for use in construction characteristics, evaluation of conformity and marking. Marine plywood is a form of plywood that has been constructed using waterproof adhesives to make.
In plywood, wbp stands for weather and boil proof, the category of glue used to make the most durable plywood. This article by dr vic kearley of trada seeks to clarify the situation and outline improvement actions that are underway. Physical and mechanical properties of plywood produced with 1. Depending on the standard, a sample should survive a 4 8 hour boil, plus the cool down and reboil cycles to be acceptable as a wbp type 1. Plywood is graded for exterior or interior use depending upon the water resistance of the glue used to stick the plies together. Because the plywood layers are bonded with the grains running against each other the plywood is highly resistant to expanding or shrinking, it is less likely to split when nailed at the edges, and. The dimensions of plywood panels are usually expressed in mm and presented in a preestablished order. Amongst specifiers and buyers concerning the properties of exterior grade plywood. Specification plywood used in the uk is sourced from all over the world and is often manufactured to overseas standards. Plywood is constructed of three or more thin sheets of wood. Wbp glues are made with melamine or phenolic resin. Jul 17, 2017 in plywood, wbp stands for weather and boil proof, the category of glue used to make the most durable plywood. Plywood suppliers in dubai uae marine plywood at danube. However, if youre not an experienced plywood shopper, the numerous options at the hardware store can seem overwhelming youll find various prices matched with multiple materials, ply, sizes, veneers, grades, and more.
Birchply wbp plywood is high quality light weight multi layered plywood panel made throughout from machine composed birch veneers and faced with a natural whole piece birch veneer of 1. Mechanical properties of richwise plywood are certified by bremen institute of forest products in accordance with en986. The purpose of this manual is to present the full metsa wood spruce plywood product range. Most confusion arises from a misinterpretation of bs en 636. The box beams were assembled by nailing plywood webs to both sides of timber without the use of adhesives. Plywood usually has different properties in the length. This kind has three layers of veneer and is layered enough to be strong and durable but can look more decorative than plywood with more plies, making it a good choice for indoor use. Technical data standard birch plywood richwise australia.
Testing and criteria for suitable plywood boat design net. These standards have evolved over time from earlier documents ohalloran 1979, 1980. Keywords certification, inspection, and grademarking of plywood, plywood classification, plywood product standard, plywood veneer, structural plywood, terminology. Can cut your sheets to any size you need a huge variety of sheets in stock. Products claiming compliance with this standard must also carry the specified markings, which includes a reference to en 636. Baltic birch marineplywood 2440 x 1220mm worldpanel. The rigid laminated surfae not only prevents moisture absorption but also ensures excellent abrasion resistance in aggressive. Firpine douglas fir, hemlock, pine, white fir, wood species balsam, larch, etc. Pdf comparison of a load bearing capacity for composite.
Load capacities, which are presented here for allowable stress design asd table a, are applicable to plywood panels qualified in accordance with teco test protocol. Finnish phenol formaldehyde glued plywood products exhibit very low levels of formaldehyde emissions. Peppard building supplies stocks wbp hardwood faced plywood in sheets sized 1200mm x 2400mm. Plywood is a 39 plyveneer product with a slightly aromatic resinous odor and natural wood color. Properties of plywood manufactured from compressed veneer. It uses an exterior weather and boil proof wbp glue similar to most exterior. Wbp plywood bs5268 structural plywood mdf veneered boards chipboard flooring egger protect insula on and much more. Highgrade melamine plywood can withstand boiling water for 10 to 20 hours.
Danube keeps a variety of filmfaced plywood ranging from hardwood core, combi core, poplar core and finger joint boards. Plywood and osb structural panels possess inherent strength and stiffness. When making these determinations, youre best off contacting the supplier and getting a definitive answer or performing the type i test yourself. It is an engineered wood from the family of manufactured boards which includes mediumdensity fibreboard mdf and particle board chipboard.
This gives the requirements for plywood for general purpose use and for structural load bearing applications in dry, humid and exterior conditions. Properties marine plywood must use an adhesive which has been proven to be highly resistant against different environments. The overall sizes of the beams were 115 mm x 395 mm x 5. Wbp in plywood stands for weather and boil proof, the category of glue used to make the most durable plywood. In relation to this information sheet the most relevant properties for plywood are considered to be. It also gives a classification based on bending properties. Plywood is a necessity for many projects, from building cabinetry in the laundry room to building your dream gazebo in the backyard. Wbp plywood wbp 12mm 09ply wbp 15mm 11ply wbp 18mm. The properties are specified according to standards en 789 and en 1058 and can be found in the metsa wood form declaration of performance dop. Multiply construction according to bristish standard bs1088. Douglas fir, hemlock, pine white fir, balsam, larch, etc. This paper describes the loading tests carried out on box beams of two different lengths but of the same cross section.