Build Daily

Building Materials

August 12, 2017 18:08

Wood, lumber and check their quality

click fraud protection

What are the timber, lumber and other products drevoobrabotki?

trunk of the tree from its natural state to a man-made element of the situation around us is undergoing a number of changes, which can not but affect its performance.The first derivative of felled wood - timber, which either immediately or after drying can turn into a beam, slab, carriage or board.And can not turn, becoming a part of the walls of the framework.From one timber can turn or a few bars only one, depending on the desired dimensions.

Bars vary in the amount of the cut sides and are called, respectively, two, three, or squared.The latter is a conventional timber with 4 sides and two end sides.

boards are untrimmed, Half-and, of course, cut.The first are obtained by sawing the logs lengthwise, sometimes even without scabbling, they have different widths, and their edges are narrowed.The second option is a board who is there to wane edge, the edge of such boards are not fully sawdust.

Cutting board obtained from logs, which on the sides completely removed two slabs, resulting in board edges are obtained smooth.In the order of things raw timber, lumber for construction should be ennobled, otherwise it's just a consumable, such as edging board formwork.

board, lumber - lumber, requiring attention

Sometimes a log or timber look nice, do not show any visible flaws, but after a couple of years is necessary to shift the crowns log, removing the unusable part of the structure.The reason for this is usually the rot that has developed in the depths of the wood structure, the outside can be seen a tiny dark dot, to which the development of the lesion began.

Determine beam quality can be just as checked the logs.A man puts his ear to the one or the other end of the beam, and the second hitting the opposite.If you hear a ringing sound - Solid timber if deaf, so rotten material.

all the easier, the fungus can lurk inside the fibers, and the product, as they say, is obvious, but there is another attack from the board - internal cracks, which often go unnoticed at first view, and swirls that appear to be captive, and subsequently fall out.

If boards well dried, after cracks found during the inspection, will not grow, and fall out knots, especially if the material is to be used inside the house .But it is better to be careful, board, lumber - lumber capricious, therefore rejects every thing that find defects, we will consider further.

How to choose a quality timber?

As already mentioned, at the bar inside the mold can be, and at the blackboard - crack, but the latter often are present on the beam and on the tool bar.There are several basic types of fractures, and the origin of them may be different.For instance, some cracks are generated in the middle of the trunk of carpenters is called metikovymi.Stratification of the annual rings gives otlupnye cracks.Both the former and the latter tend to increase during drying felled trunk.

Splits, arising from the severe frosts in the still-growing tree, can be found anywhere, and in the core, and to wane .But it's all natural phenomena.But in another case of finished boards and ends of cracking, because of improper drying, during which the ends and the middle of dry material at different speeds.

Knots, which begin to fall in the process of shrinkage of lumber, converted a beautiful plaque in low-grade waste product.Therefore, carefully inspect these errors on the wood surface, and if possible, culling material from such defects as planks and boards with knots difficult to handle.

However, the flaw could easily turn into a virtue, exemplified growths that occur on almost every tree trunk.They are also processed with difficulty, but in the end it turns out high-quality timber with a beautiful pattern.Worse, when distorted geometry drevoobrabotki product, but this only happens in cases when a wrong-drying or unreasoned stacking.

instagram viewer

Categories

Latest Blog Post