Dimensions of boards

Among all sawn timber are the most versatile boards. They are used in various fields – from the production of furniture, construction and facing of houses to the construction of trailers, cars, ships and other wooden transport structures. Types of boards and their dimensions are very variable, so it is necessary to understand, in which case lumber are used with those or other characteristics.

Standard sizes of boards of different breeds

Technical parameters of boards are chosen taking into account the nature of the work. The choice of lumber is usually affected, the load value, as well as the possibility of affecting them of various adverse factors. These features are determined not only by the dimensions of wooden products, but also their grade and wood.

Today, there is a large number of regulatory documents and standards to determine the sizes of any sawn timber. Licensed logging and woodworking enterprises are valid according to their requirements, so the dimensions of the boards of various types are strictly fixed.

Dimensions of boards

According to GOST, the board is called a sawn timber, the thickness of which is not more than 100 mm, while the width is twice and more exceeds the thickness.

The dimensions of the standard edged board are defined as the minimum distance between its six opposite surfaces. Unedged type of sawn timber is the exception that will be reported below.

Geometrically edged board is a typical parallelepiped. The wider surfaces are called plastics, the thickness or height of the sawn timber is determined between them. Related sides on the sides are represented by long edges, on which the width of the board depends. The surfaces of the cross sections from opposite sides are ends that serve to determine the length.

Dimensions of boards

We will analyze the right way to define sizes.

  • Length. The parameter is measured in meters (m) as the smallest distance between opposite ends of the workpiece. Special attention to the length is drawn from decorative boards, going to the outer and internal lining of the construction. In other cases – the manufacture of furniture, the construction of hidden and temporary building structures – the parameter can be neglected.

  • Width. The parameter is measured in millimeters (mm). The edged boards are defined as the smallest distance between the edges anywhere in the billet on the distance from the ends of 150 mm. U unedged – in the middle part of the workpiece as a half asum of the width of the upper and lower plastic without taking into account the bark and the luba.

  • Thickness. The parameter is measured in millimeters (mm) between the layers in any part of the workpiece, but not closer than 150 mm from the edge of the end. Together with the width of the cross section of the product. Both parameters allow for GOST minor deviations.

Dimensions of boards

The standard dimensions of the boards of various breeds can differ slightly.

Coniferous

Typical representatives – larch, pine, spruce, fir and cedar. The first two belong to the light-dual rocks, the rest – to the dark. Sometimes among the entire range there are juniper, tees, thuja and cypress.

Sizes of coniferous sawn timber are determined by the standard GOST 24454-80. His requirements apply to all types of boards used for the state industry and domestic trade. The standard complies with many European regulatory documents on lumber dimensions, which makes it possible to export and import them in the global market.

Dimensions of boards

Dimensions of boards

Working length of coniferboards varies in a wide range. The minimum value is 0.5 m, the maximum – 6.5. Intermediate values ​​go in increments of 0.1-0.25 m.

The width of coniferous boards is presented in the range from 75 to 275 mm in a step of 25 mm. Thickness, in turn, is 16-100 mm, and the boards with a thickness of up to 35 mm are considered thin, and from 36 to 100 mm – thick.

Size ratio is usually determined by the GOST table. The most frequently used boards with a length of 3 to 4 meters with the aspect ratio in the section 30×150 mm or 150×20 mm, where the smaller figure denotes the thickness.

Dimensions of boards

Deciduous

The wood of this group is more diverse than the coniferous trees. Among them allocate firm and soft breeds. Typical representatives of the first group are oak, beech, ram, ash, and the second – Own, Alder, Topol, Lipa, Iva.

Dimensions are determined according to GOST 2695-83. The length of the hardening breed varies in the range from 0.5 to 6.5 m, and migratory – from 0.5 to 2.5 m. In width, edged boards are made from 60 to 200 mm in 10-30 mm increments, unedged and unilateral edged – from 50 to 200 mm in 10 mm increments. The thickness of all kinds varies from 19 to 100 mm.

Dimensions of boards

Dimensions of boards

Please note that it is possible to manufacture lumber from soft rocks with sizes of conifers according to GOST 24454-80.

Dimensions of the boards are determined using special measuring instruments – long metal lines and caliper. With the same purpose, manufacturers often use various templates or calibration blanks, the error of which is minimized. Measurements are made several times with certain periodicity.

The presence of deviations from the claimed parameters, the maximum permissible values ​​of which are determined by GOST. For coniferous and hardwood, they are identical and measured in mm.

Dimensions of boards

Dimensions of boards

By lenght:

  • +50 and -25.

In width:

  • up to 100 mm ± 2.0;

  • 100 mm and more ± 3.0.

Thick:

  • up to 32 mm ± 1.0;

  • 32 mm and more than ± 2.0.

The listed values ​​of the sizes and their allowable deviations include only products whose humidity is 20%. When drying, wood dimensions can be significantly reduced, so the size of the boards with greater or smaller humidity must be multiplied by the corresponding coefficient whose value is determined according to GOST 6782.one.

Dimensions of boards

Dimensions of boards

With full drying of wood before packaging and shipment requires control measurements.

Consider examples of labeling of the finished batch of boards.

  • Board – 1 – spruce – 30x150x3000 GOST 24454-80

Decoding: The first grade board, spruce, with the aspect ratio of 30 to 150 by 3000, made according to GOST 24454-80.

  • Board – 3 – Birch – 50x150x3000 GOST 2695-83

Decoding: The blackboard of the third grade, birch, with the aspect ratio of 50 to 150 by 3000, made according to GOST 2695-83.

Dimensions of boards

Dimensions of boards

Species and their dimensions

The construction uses 2 types of boards: edged and unedged. The first differ from the second total treatment, fixed sizes with a strict aspect ratio, and their edges can be both parallel and non-parallel. Edged boards are produced, as a rule, plane. That is why the requirements of the guests allow deviations: during processing and subsequent grinding can be removed 1-2 mm.

Sizes are selected based on the nature of construction work. The most acceptable are considered the ratio of the parties: 30x150x3000 mm, 20x150x3000 mm, as well as their 4-meter analogues. Please note that the manufacturer has the right to make lumber of non-standard sizes at the request of the customer.

Dimensions of boards

Dimensions of boards

Sometimes for construction required lumber larger length. They are used to avoid unpleasant junctions, for example, when finishing the building outside, the construction of roofs, stairs.

Then there are boards with the same aspect ratio in section and increased length: 30x150x6000 mm, 20x150x6000 mm.

Unedged boards, in turn, are characterized by a coarser treatment, and only lumber plates are subjected to it, there remains lob on the edges and sometimes. Separate requirements are installed for them. Unedged lumber, as well as cutting with non-parallel edges, a narrow part width should be at least 100 mm for boards with a thickness of up to 50 mm and at least 200 mm for boards thick from 60 to 100 mm.

Dimensions of boards

Both types depending on the method and duration of storage may be dry or saved by natural humidity. It is also worth considering when buying, since the latter will dry over time and partially decrease in size.

Dimensions of boards

Lumber size nuances

In the construction of the board are used with various purposes. Some owners apply them for the construction of a skeleton house, others – only for cladding walls and laying the floor, and the third uses them for the arrangement of the roof. Determine the necessary sizes of materials from wood can be drawings. The recommendations given below will help you understand the basic requirements that are presented to lumber for various construction work.

Dimensions of boards

Dimensions of boards

Foundation

In this case, the boards are used in the manufacture of formwork for the scene, less often – for the strapping of the pile foundation, which at times increases the strength and reliability of the structure, saves on materials.

Boards are commonly used in conjunction with a bar and stacked on it into the second series.

In length, the material must fully comply with the size of the foundation. The optimal width is 20-25 cm for a two-row strapping and 40 cm – for one-row, thickness – 5-8 cm.

Dimensions of boards

Dimensions of boards

Frame

Food farewells are best of all fir and pine. In this case, the boards of the first or second grade apply. You can use boards with defects, since they will not be visible, but before use it is necessary to be treated with protective solutions against fungus and insects. The length of the frame boards must correspond to the size of the structure to avoid unwanted joints. The width of the vertical and horizontal racks should be 20-30 cm, and the thickness – at least 4 cm.

Dimensions of boards

Dimensions of boards

Walls and overlaps

The inner walls of the room are subjected to significantly less loads than the foundation and framework of the building, so for such purposes there are boards with dimensions in section 10-15 x 2.5-5 cm. Overlapping between floors require more durable materials, so the boards are well suited to 20-25 cm wide and a thickness of about 4-5 cm.

Dimensions of boards

Dimensions of boards

Roof

Materials used for the construction of the roof must meet several requirements. The rafter and the roofing doom should be durable, ensure reliability of the design and at the same time do not create an increased load on the framework of the building and the foundation. It is recommended to use well-tested and dried boards thick of about 4-5 cm and a width of about 10-13 cm.

Dimensions of boards

Dimensions of boards

Facing

Upon completion of the construction of the main elements of the building, you can proceed to the inner and outer finish.

Today, the market for facing ornamental lumber is represented by a rather wide range: lining, imitation of timber, block house, plaquene, parquet board.

They differ in relatively small transverse dimensions, as they perform exclusively aesthetic function.

Dimensions of boards

Dimensions of boards

Front boards

Facade boards additionally provide the function of heat, sound and vaporizolation, so they are manufactured in wider format. The optimal option for cladding is the Finnish boards, since they are characterized by a smaller tendency to deformation and cracking, as well as high strength.

Dimensions of boards

Doors and windows

Products for the arrangement of door and window openings include platbands, and a good board is used. Dimensions are selected taking into account the size of the passage and, as a rule, are standardized by manufacturers. Typical Parameters of Dobly Plans – 10-15 x 100-150 x 2350-2500 mm.

Dimensions of boards

Variable lumber sizes are quite wide. Nevertheless, it is not necessary to choose the necessary dimensions as difficult as it may seem at first glance. Two simple rules should be remembered.

The dimensions of the cross section increase in proportion to the load on the wooden structure, which implies the use of thicker and wide materials in the construction of carriers and supporting elements.

Dimensions of boards

Avoid unwanted joints between boards in length to avoid possible moisture penetration with mold and improve the reliability of the design.

In advance, calculate the size of the sawn timber before their purchase in order to accurately determine the required amount of products and use it without a residue.

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