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Dry lumber LVL. The tree with the strength of metal

The main principle of modern suburban housing is simple: to build a fast, convenient living. Everything else - the question of technology. Any modern building is characterized by the fact that from the outset it thought born engineer, and only then - scrap materials. The frame building, erected using LVL, the idea of ​​functionality brought to its perfection: laminated veneer lumber - a material most appropriate to this idea.

Historically, that the carrier all the design basis load frame house made of wood. In traditional European technology fashionable nowadays fachwerk frame acted as the very woodwork that current tourists tend to perceive only as a spectacular reception facade design. Constructive solution built on modern technology frame house is not much different from the old fachwerk: " backbone " and that, and another - a wooden frame.

It seems paradoxical that the tree can be the building blocks of the industrial age. Four centuries ago the tree abandoned for the sake of more progressive brick as later a brick have refused for the sake of concrete. And, nevertheless, the fact remains that the wooden houses are built not only because of their aesthetic appeal or from reasons of ecology, but also because that tree - a very tech stuff. Build out easily, and the construction of the house does not take much time. But the main shortcomings of wood - rotting, flammability and lack of density - effectively overcome with modern technology.

The progressive methods of processing wood are fundamentally changing the properties of the material, and moreover, allow you to create on its basis a fundamentally new product assembly and performance. It is to such a high-tech development is LVL - Laminated Veneer Lumber, wood products industry, which is a timber, planks and beams are made by gluing layers of veneer with a parallel arrangement of the fibers.

As a building material, LVL has a unique set of properties. Unlike conventional lumber, he is able to keep accurate linear dimensions irrespective of seasonal fluctuations in humidity and temperature, it is not deformed and warped from moisture, has minimal shrinkage performance natural. According to these characteristics, the competition he could make except glulam, LVL but the strength is higher than that of laminated veneer lumber, LVL beams thereby become indispensable in the manufacture of the pillars and ceilings of great length.

The permissible load on the bending and stretching along the fibers in LVL almost twice higher than those for conventional lumber. Length of LVL beams can reach eighteen meters, which is also a huge advantage to LVL lumber from solid wood, do not exceed, as a rule, in the length of eight meters. An important difference is the long products LVL their cost: it depends little on their length, which is particularly advantageous for background allocates LVL laminated board, the cost of increasing the length of which grows exponentially.

Compared with traditional building materials such as metal and concrete, LVL has an optimal ratio of strength and weight indicators. This factor is particularly important for low-rise construction, since a sufficient margin of safety design of LVL do not require device reinforced foundation and easy to install: they can move on the ground and climb to the upper floors without the use of special equipment. As a consequence, the construction of buildings with the use of LVL requires significantly less cost and time than the construction of brick and concrete.

His features laminated veneer lumber is required to manufacture technology. Set glued veneer sheets is carried out so that the seams of each successive layer are staggered evenly throughout the length of the rod. This system, patented by " Raute Wood ", a global supplier of equipment for the production of LVL, allows for distinguishing this material unique strength characteristics. The important is also the fact that in the production process without exception, its stages are subject to computer management and control, which ensures maximum preservation of the exact linear parameters of finished products.

The starting material for the production are coniferous logs. After the hydro and thermal treatment, debarking and cutting they fall into the feed conveyor lathe. Peeling process is fully automated and is subject to a special computer program, and alignment measurement and blanks is performed using laser devices of the highest level of accuracy. The resulting dried veneer peeling is tested and sorted by means of ultrasonic technology. Humidity veneer checked on the line repeatedly, moist veneer goes to final drying. After veneer sheets ultrasonically tested and sorted the most homogeneous composition of dense sheets can be used for manufacturing the structural material of special strength. When gluing layers of veneer used neutral oxidation resin, which provides high levels of finished material fire resistance

The production technology is similar to LVL plywood production technology, however, there are significant differences. Thus, in the manufacture of plywood veneer fibers of adjacent layers are arranged crosswise, and in the production of LVL - parallel. The result is uniform and the composition and strength of the material. In manufacturing LVL used veneer greater thickness (3.2 mm) and a finished product may have a thickness up to 75 mm.

One of the important advantages of LVL as a construction material - it's a wide choice of timber sizes. The width and length of the beams can be chosen arbitrarily, within the dimensions allowed by the line for the production of LVL. With a length of 2.5 to 18 m, the width of the veneer laminated board ranged from 200 to 1830 mm, the thickness is 21 - 75 mm. LVL billets are cut into the size precisely by the customer. Depending on the intended application of the workpiece or cut into longitudinal bars or planks that are easily handled and the conditions of manufacture and at the construction site.

The design and installation properties of LVL provided this material most widely used in North America, where ninety percent of all homes being built with wood. Increasingly popular laminated veneer lumber and enjoyed in Western Europe, which traditionally used concrete and bricks now prefer cheaper and more effective materials that can provide high thermal insulation and acoustic characteristics of the property. Proven technology frame housing with the use of this material allows you to build energy-efficient homes and any architectural forms of any size in the shortest possible time. And regardless of whether the modest house Holiday cottages or representative alone a large area, will unite them one thing: reliability, quality and comfort provided specially created for them material - " supertree " LVL.

                                                                  
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