Lumber made from natural wood is often used for construction. They can be classified by type of wood, forms of procurement and other parameters. Characteristics of lumber depends on a number of properties of a particular type of wood.
Table of characteristics of sawn timber.
Each type of wood has its own properties. That is why it is customary to observe a convenient and understandable classification. All materials from natural wood can be divided into several groups:
Lumber Classification and Characteristic:
Timber Types Scheme.
Before you buy one or another type of lumber, you need to study their characteristics, areas of use. In this case, the selection will be correct, and the wood itself will last a long time.
Lumber classification scheme.
Timber that is used for construction can be made of various wood species. The most popular material is needles, most of the boards and boards are made from pine and spruce, but there are other options. Pine, unlike other wood species, is distinguished by its low weight, with minimal stress on the foundation. For example, aspen or birch have a very large weight, but their strength characteristics are not so good. Boards are usually made of pine, this material is very durable, easy to process, has many advantages.
Pine contains natural gum in its composition, which acts as an excellent antiseptic. This ensures the absence of traces of rot, mold for a long time. Pine has a soft and delicate structure, it makes processing simple, pleasant and fast. The smell, the color of pine add material attractiveness not only as a standard building material, but also as an option for decorative wall cladding, the construction of log cabins.
The characteristics of sawn timber are not without such a parameter as the number and presence of branches. Here it is necessary to pay attention to the spruce. This conifer has many positive characteristics, but its processing is complex. The problem is that the trunk contains many branches, and this is an obstacle to processing. Spruce is not as resistant to decay as a pine, but its price is much lower than .
Scheme of options for sawing wood.
Wood such as cedar can also be used for boards. This option is rare, but still used.
Cedar wood is durable, reliable, like spruce, but it is more simple and convenient to process. Fir can also be used to make lumber. It is resistant to decay, perfectly processed, has many advantages.
Lumber is produced in various forms, it is possible to choose a suitable option. Products differ in shape, size, their characteristics, field of use. Common materials include edged and unedged boards that are suitable for almost any job, but there are other options that act as supporting materials.
Most often, edged and unedged boards are used for construction, they differ in a number of parameters. These lumber are very popular, they are used for the construction of the frameworks of houses, for the construction of strips, walls, partitions, for the installation of roof systems, formwork and other works.
The edging board is a material obtained by cutting a log. At the same time, all its edges are even, but a small amount of bark may remain, that is, a wane. Indicators of moisture resistance, strength, mechanical stability are very different, as well as cost.
Calculation table for trimming boards.
This makes it possible to choose exactly the material that is suitable for work more than others, without overpaying. For the manufacture of edged boards are often used pine or spruce. The cost of such boards is not so great, but the strength and durability correspond to all parameters. Of these boards, you can safely build not only the outbuildings, but also carry out interior decoration. Timber has a standard size of 6 m, but the thickness and width are different. The width of the boards can be equal to 100 mm, 150 mm, 200 mm, for thickness - 25 mm, 40 mm, 50 mm.
The scope of the edged board is quite wide:
Unedged board has edges with bark, it is used quite often in construction. The appearance of these lumber are attractive, as close as possible to natural, which makes them an excellent option for wall cladding. Unedged board has a not so high density, so it is easy to any treatment. Finishing such boards does not take much time. But if there are many cracks on the surface, this will significantly reduce the service life of lumber.
Timber may vary in price and quality. The cheapest can be attributed chetyrehkantny timber, which is made in large quantities, without requiring for this large costly capacity. The manufacture of timber is carried out by cutting or heaving of solid wood, but the quality of the surface will differ significantly. For example, when weave the sides, we get ragged, which is not always acceptable. When sawing, the edges and edges are neater, such a timber is already suitable for work, where the appearance of materials is important.
A round-cut timber is a square material, oskedanny on all sides. Its length is usually 4 m, thickness - from 100 mm, depending on the destination. Such timber is made, as a rule, from a pine. It is processed on all sides, including the end parts. Used most often for the construction of the walls of the house, beams, ceilings, subfloor. Differs in high strength properties.
The half-edged board has uneven planes, traces of bark may remain on the ends. This board is used for technical work. Bridges are made of it, it can be used for technical and draft floors, as a basis for other products.
Slab is a fairly cheap lumber, which, when properly executed processing perfectly replaces other wood products.
In appearance, the croaker is very similar to the sidewall of a log, its part is propylene on one side and not on the other. Such sawn timbers are considered to be lumpy type waste; they remain after cutting the base material. But the dimensions of the slab are normalized, it has the same width from the ends and along the entire length. Today, two types of croaker are used - wood and business materials. It is used for various purposes, as blanks for other products and building elements.
Lumber is a piece of natural wood. They all differ in shape, their individual characteristics, size, appearance, degree of processing. Lumber is used for construction and repair work of various types, often used in the assembly of furniture, fences, in the construction of draft floors. When choosing, you should focus on those properties that are necessary for specific conditions.