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125 before our e., it was built the greatest in history of humanity long-span construction, a diameter made it 43 m. This was the concrete dome of Roman Pantheon.
His image and integrity of composition and in our days cause enhanceable interest in a professional environment. This time can be named beginning of foundation of new direction in architecture, building of long-span constructions.
However already 1812 for ceiling of large flights applied timber-works. It is as an example possible to bring building over of former riding Hall in Moscow, the diameter of flight made 30m.
In our time new tasks became before designers and architects, it is necessary it was maximally to use bearings qualities of material, and also to get more easy and economical ceilings, when a degrowth constructions and buildings becomes decision. Certainly, not without admiration we look at wooden beams, having the bent and massive lines, striking the original appearance. What it such? BKDK the «long-span glued timber-work». Such construction is a monolithic aggregate of wooden details, connected by a glue layer, executing bearing, non-load-bearing and decorative functions. Exactly due to this technology became possible to recover large flights without the use of intermediate supports, distance can make order of 12m. One of decision factors was become exactly by weight. Let us appeal to the numbers. For example, specific closeness of pine-tree at humidity 12% 505 kg/m3 makes, while at the reinforced concrete such index makes 2500 kg/m3. Thus, construction from the glued beam, practically in five times easier than the reinforced concrete.
A spere is wide enough, different farms, archs, ceilings of stadiums, sporting halls, building of arenas. Also, all more frequent foot-bridges begin to erect from the glued beam, which differ economy and by favourable original appearance. Bearings elements are the glued construction also. Speed of editing is important, in fact at editing of wares from the reinforced concrete an expensive powerful lifting technique is required. Accordingly, applying the glued beam, expenses diminish on editing and delivery of material.
Thus, application of the glued timber-works on responsible areas justifies the serious requirements produced to them: High durability of glue connection, a minimum of internal tensions, high quality of facial surfaces of the beam, maintainance of exact geometrical sizes, ecology.
However in such responsible building it is needed to trust only to the professionals, quality of material of which is not subject a doubt. Our company, applying the experience and individual going near every client, will decide even the most difficult designer. |
