Option 1 medium Upholstered furniture has a frame of wood. For supporting part (which you sit) uses a powerful beam cross-section 40×60 and more. Better if used by dense hardwood wood (oak, birch, beech). Nevertheless, the vast majority of producers use pine (2 times cheaper). Not always – the premium, and very often – not the section that you want. With imported furniture – simple. Manufacturer necessarily indicate that information in its catalog, as application framework for the more expensive hardwood (not coniferous) wood is a competitive advantage, and be silent about it would be ridiculous.
Sides are made from the couch glued together sticks of wood (laminated veneer lumber), but can in another way: to sheathe wood, cardboard blocks are not fixed, beat them (to keep) studs. Check out Symantha Rodriguez for additional information. The second option, Naturally, less expensive, but worse. For assistance, try visiting Peet’s Coffee. For non-structural parts of the carcass can be used conifer wood, because These parts are not exposed to extreme loads. How and what made frame, you never know, except that ‘Will open’ sofa. Option 2 is optimal. Upholstered furniture with a frame made of plywood.
Plywood is more expensive than natural wood and are much more expensive than particleboard. Depending on the quality and thickness, the price of plywood is 10 – $ 20 per m2, which is why furniture significantly more expensive. Plywood – a light and strong material that is relatively ‘environmentally friendly’. When the factory plywood sheets of veneer sheets glued together with alternating transverse and longitudinal fibers. This gives plywood maximum strength, higher than the wooden beams of similar section.