What determines the weight
The formation of the weight of the product is decisively influenced by its size, structure, grade of sheets.
Depending on the pressing method, characteristics of chipboard chips are subdivided into groups with the following density values:
- up to 550 kg / m3;
- over 550 kg / m3, but less than 750 kg / m3;
- more than 750 kg / m3.
The higher the density index, the more weight the sheet has. The type of surface treatment, the rate of evaporation of formaldehyde, which is part of the bonding composite, does not have a noticeable effect on the weight, because fluctuations in the values can be only fractions of a percent.
Products have a different ability to absorb moisture vapor, therefore, even outwardly absolutely dry sheets can have slightly different mass, which is determined by the moisture capacity of the material. Oscillations are insignificant, but they do occur.
Some types of products are covered with a polymer film - laminate
Trying to understand how much chipboard sheets weigh, you need to take into account that they are completely moisture resistant, have an initially stable moisture concentration, which varies in the range from 5% to 7%. The figure indicated by the manufacturer is confirmed in practice and does not depend on the place of storage of materials
The dimensions of the slab have a decisive influence on the weight. For example, for sheets with a thickness of 8 mm, depending on the length and width, the value varies from 25.7 kg to 35.3 kg. With a thickness of 10 mm, the changes fall within the range from 30.8 kg to 42.3 kg.
The approximate weight of a chipboard sheet with a thickness of 16 mm with a relatively small size of 2440 x 1830 mm is slightly more than 46 kg, and a large layer (3500 x 1750 mm) has an indicator equal to almost 64 kg. On average, one m2 of thick slab weighs about 10 kg.
The difference in weight reaches significant figures when evaluating the volume of products (in m3), completed in a package, which must be taken into account when planning a purchase. Some plates with a thickness of 32 mm and maximum dimensions weigh more than 100 kg. For transportation, installation of such products will require the efforts of several people.
What is the density of plywood kg m3 from different types of wood?
- Date: 08-09-2015
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Despite the fact that today manufacturers offer a large assortment of modern building and finishing materials, there is one that has not lost its popularity for many years. This material is plywood. Given the fact that this material is produced in many countries of the world, using the local raw material base, its characteristics can vary significantly. So, one of the most important indicators that determine the grade and quality of the material is the density of plywood. It depends on her how strong the sheets are and for what purposes they can be used.
Existing dimensions of plywood sheets.
Depending on the type and type, plywood sheets can be used in construction, applied arts, mechanical engineering, furniture, toys and interior elements. The possibilities of plywood, as a finishing or building material, completely depend on the type of wood from which it is made, the adhesive composition and grade.
Features of production
Moisture-resistant plywood is used in various industries. It includes all brands that have varying degrees of moisture resistance. The composition of adhesive mixtures includes low-soluble synthetic resins that actively resist moisture. Some brands may have more moisture resistance than others.
Furniture, sports equipment, toys are made from moisture-resistant types. In construction, plywood sheets are used as flooring, for leveling walls, and for roofing.It is actively used in those areas where lightweight and durable materials are required. In shipbuilding, aircraft construction and elevator construction, this material is in steady demand.
Plywood grades.
Using formaldehyde resin with the addition of urea for gluing the plates, FC products are obtained. It belongs to moisture resistant species with an average degree of resistance. It is made by gluing coniferous or mixed veneers with urea adhesives. It is actively used in construction, finishing the premises inside the building. The furniture industry uses this material to make boxes and boxes.
By adding phenol, a plywood called FSF is obtained, which refers to products with increased moisture resistance. This type is used for interior and exterior decoration.
Plywood, called FSF, can be coated with a phenolic film. Then it gets the name FOF film faced plywood. Phenolic film processing does not allow the use of plywood products for interior decoration. FOF is usually used for outdoor work. From it they mount billboards that do not react to precipitation, use it as a basis for roofing material and make furniture.
The highest quality and lightest aviation plywood. It has increased flexibility. It is made from the highest grade of finished veneer, the thickness of which cannot be higher than 2.5 mm, and is used in aircraft modeling.
Plywood products are made from birch or coniferous trees. Birch veneer is heavier than coniferous veneer, this is reflected in the total weight of the sheet.
Regardless of which veneer was used, processing it with formaldehyde resin with additives makes the resulting products protected from moisture.
Influencing factors
Plywood is a multi-layer material of veneer sheets connected in the direction of the grain crosswise. Veneer is thin layers of wood, no more than 4 millimeters. In the manufacture of plywood, veneer from different types of wood is used, the only difference is in the method of production. Its mass and characteristics may vary, it all depends on the specific gravity, texture, moisture and moisture resistance. The factors affecting weight the most are the thickness and area of the material, as well as the type of wood.
For gluing veneers together, formaldehyde resin is used. In turn, depending on the additives, plywood is divided into several types.
- FBA is an environmentally friendly product, it contains natural glue. Low moisture resistance.
- FB - bakelite. Not afraid of moisture, used in shipbuilding. Each layer is glued together with phenolic resins and impregnated with bakelite varnish.
- FC - the composition includes urea. It has low moisture resistance, it is used only for interior decoration.
- FSF - with the addition of phenol. Durable product with increased moisture resistance. It can be used for both interior and exterior decoration.
- FOF - laminated type of product. The characteristics are the same as for FSF, the difference is that it has a lining made of a special film.
- BS or aviation - the material of the highest quality, veneer for production is taken only the best grades. Sufficiently voluminous, alcohol-soluble glue is used for production.
- BV is not as moisture resistant as BS. The veneer is glued together with a water-soluble compound.
It should be remembered that the density will not depend on the type of glue. But it can change from the amount of resins. 1 m3 of resin has a weight of about 800 - 850 kilograms. Therefore, the more adhesive is used, the higher the density of the finished plywood. Manufacturers for the sake of harmlessness and environmental friendliness can reduce the amount of glue.
All characteristics of plywood are related to each other, and much depends on the thickness. For example, you can consider FC plywood 10 millimeters thick - this is the most popular and demanded type. A product of this thickness has 7 layers of veneer, a pack with a volume of 1 cube will consist of 43 sheets, but according to the standards of sheets in a package it will be 3 pieces less. Therefore, it will amount to not 1, but 0.93.
Sheets of 2-8 millimeters are used in the manufacture of furniture, 8-12 millimeters - as surface finishing. Plywood can be manufactured in standard sizes corresponding to GOST - 1.525 square meters, 1.22x2.44, 1.25x2.5, 1.5x3, 1.525x3.05 meters. And also on request - other parameters required by the customer.
Coniferous, moisture-resistant plywood FSF
Depending on the material, a distinction is made between coniferous and birch plywood. The difference between the two is price and weight. Birch plywood is significantly more expensive, but more durable, which allows it to be used under conditions of increased stress.
Plywood FSF needles. Coniferous FSF plywood is made from coniferous veneer. This is plywood (F), the main component of which is glued resin phenol-formaldehyde glue (SF). To increase the strength, the rotary cut veneer is applied in several layers. Depending on the number of layers, the following types of plywood are distinguished: three-layer, five-layer, multi-layer (the number of layers is always odd).
The main characteristics of FSF needles:
- Increased water resistance. Moisture does not affect the technical properties of plywood. When compared with other types of plywood, the degree of moisture resistance of coniferous FSF is much higher.
- High wear resistance. The material shrinks much less than other sawn timber. Cracking of FSF plywood occurs in very rare cases.
- Mechanical strength.
The plywood structure has excellent resistance to tearing forces. The material bends very well.
- Resistant to fungi and decay. One of the main positive properties of the material.
- Easy installation. For self-installation, you only need nails, screws or self-tapping screws. FSF plywood is easy to process: cutting, grinding, drilling.
These characteristics make it possible to use such plywood in almost all areas of production: construction and roofing, exterior finishing work. The material, according to external data, is beautiful and harmonious.
It must be remembered that in addition to positive qualities, any material also has negative properties. The composition includes toxic substances, therefore, the use of FSF plywood inside the dwelling is excluded. Due to the use of synthetic resins in its manufacture, the material is highly flammable.
Birch and softwood plywood
Products made from veneer raw materials are gaining popularity due to their low price, ease of installation and durability. With a wide variety of assortment, the greatest demand is for plywood sheets made of coniferous and birch veneer.
It is quite understandable and expected that the density of beds from needles is less than from any hardwood, including birch. Suffice it to recall the appearance and tactile sensations from any parts of coniferous and deciduous trees.
Plywood, glued from pine veneer, has a density ranging from a minimum value of 550 kg / m3 to a maximum value of 650 kg / m3. Birch veneer plywood layers are characterized by higher density values, reaching 750 kg / m3. Consequently, one cube or the same square sheet of products made from the second type of raw material will be approximately 1/10 heavier than from the first type of raw material.
Correspondence tables for the volume, weight and dimensions of plywood
It is important to remember that before proceeding with computational operations, it is necessary to convert all units of measurement into a single unit - meter. The second step is to calculate the density of the wood material
This value is determined by dividing the mass of the pack by the previously calculated volume
The second step is to calculate the density of the wood material. This value is determined by dividing the mass of the pack by the previously calculated volume.
It is important to note that this calculation is acceptable only when calculating the weight of FK and FSF slabs. If it is necessary to calculate the mass of other plywood grades (low / high density), it is recommended to seek help from professionals
Film faced plywood from "Panera Agro"
Tel. (495) 744-11-17 Prices
All thicknesses of film faced plywood
All sizes of film faced plywood
Film faced plywood is the most common size and is always in stock for shipping. It has a smooth moisture-resistant surface, high strength and stable mechanical parameters. The main application is formwork structures, retains geometric parameters with repeated use. Buy laminated plywood will be the best option.
| Format: | 2440x1220 mm. |
| Leaf area: | 2.98 m2 |
| Sheet weight: | 17.68 kg |
| Number of sheets in m3: | 37,32 |
| Number of sheets in a bundle: | 44 or 67 |
| Number of packs in a wagon: | 24 or 16 |
Format:
2500x1250 mm.
Leaf area:
3.125 m2
Sheet weight:
18.56 kg
Number of sheets in m3:
35,55
Number of sheets in a bundle:
44 or 67
Number of packs in a wagon:
24 or 16
Format:
3000x1500 mm.
Leaf area:
4.5 m2
Sheet weight:
26.73 kg
Number of sheets in m3:
24,69
Number of sheets in a bundle:
44 or 67
Number of packs in a wagon:
16 or 11
| Format: | 2440x1220 mm. |
| Leaf area: | 2.98 m2 |
| Sheet weight: | 23.57 kg |
| Number of sheets in m3: | 28 |
| Number of sheets in a bundle: | 33 or 50 |
| Number of packs in a wagon: | 24 or 16 |
Format:
2500x1250 mm.
Leaf area:
3.125 m2
Sheet weight:
24.75 kg
Number of sheets in m3:
26,67
Number of sheets in a bundle:
33 or 50
Number of packs in a wagon:
24 or 16
Format:
3000x1500 mm.
Leaf area:
4.5 m2
Sheet weight:
35.64 kg
Number of sheets in m3:
18,52
Number of sheets in a bundle:
33 or 50
Number of packs in a wagon:
16 or 11
| Format: | 2440x1220 mm. |
| Leaf area: | 2.98 m2 |
| Sheet weight: | 35.37 kg |
| Number of sheets in m3: | 18,66 |
| Number of sheets in a bundle: | 22 or 33 |
| Number of packs in a wagon: | 24 or 16 |
Format:
2500x1250 mm.
Leaf area:
3.125 m2
Sheet weight:
37.14 kg
Number of sheets in m3:
17,77
Number of sheets in a bundle:
22 or 33
Number of packs in a wagon:
24 or 16
Format:
3000x1500 mm.
Leaf area:
4.5 m2
Sheet weight:
53.48 kg
Number of sheets in m3:
12,24
Number of sheets in a bundle:
22 or 33
Number of packs in a wagon:
16 or 11
| Format: | 2440x1220 mm. |
| Leaf area: | 2.98 m2 |
| Sheet weight: | 41.25 kg |
| Number of sheets in m3: | 16 |
| Number of sheets in a bundle: | 19 or 29 |
| Number of packs in a wagon: | 24 or 16 |
Format:
2500x1250 mm.
Leaf area:
3.125 m2
Sheet weight:
43.3 kg
Number of sheets in m3:
15,24
Number of sheets in a bundle:
19 or 29
Number of packs in a wagon:
24 or 16
Format:
3000x1500 mm.
Leaf area:
4.5 m2
Sheet weight:
62.38 kg
Number of sheets in m3:
10,58
Number of sheets in a bundle:
19 or 29
Number of packs in a wagon:
16 or 11
How much does a plywood sheet weigh or how much does plywood weigh?
For example, the core of the sheet and the veneer layers covering it can be produced from different types of wood, or they can form a single whole. In the production of the first method, hardwoods are often added to raw materials from soft woods. Pine, fir or spruce are commonly used as soft varieties. Hard species include poplar, beech, linden and birch.
Components of plywood sheets and determine their density. To have an idea of how to determine the useful properties of the boards and their area of application, it is necessary to consider in more detail the types of wood used for production.
Birch plywood
Plywood grades.
Birch wood has the lightest shade of all deciduous trees and belongs to medium-strength materials. The density of birch is about 700-710 kg / m³. This is a fairly high indicator that allows the use of birch wood not only for the manufacture of plywood, but also in the production of interior parts and household items.
Plywood sheets made from birch veneer can successfully serve as a raw material for furniture, wall panels and interior decoration. But this material is extremely undesirable to use for facade or roofing works, because, despite the high strength indicators, birch wood is prone to decay and quickly warps at high humidity.
In addition, it should be noted that birch veneer plywood sheets are very easy to process and are an ideal material for any type of finish and imitation of valuable wood species: walnut, gray maple or mahogany.
Spruce and pine slabs
Table of characteristics of birch veneer plywood.
Unlike birch, coniferous wood species are distinguished by high resin content, which gives them excellent antiseptic qualities. Plywood made from coniferous veneer is successfully used for exterior decoration and roofing works. Roof lathing or facade materials made of this type of plywood are practically not subject to decay, shrinkage and warping.
Depending on the place of growth, pine and spruce have the highest density values among conifers, which can range from 430 to 480 kg / m3. In the production of plywood boards, due to pressing, adherence to certain temperatures, the addition of paraffin, adhesives and some other factors, the density of the material can increase significantly.
Production and scope
Plywood is a material that is made from wood veneer by gluing it in a certain way in several layers with adhesive mixtures based on phenol-formaldehyde or urea resins. Veneer is made from both coniferous wood, such as spruce, pine, larch, and various hardwoods. Most often, birch is used for the manufacture of such veneer. Plywood is widely used in various industries:
- construction;
- furniture manufacture;
- aviation and shipbuilding industry;
- electrical engineering, etc.
Therefore, it is not surprising that the technology of its production in each case has its own characteristics. Indeed, for example, the material for multiple installation of construction formwork must have completely different characteristics than in the manufacture of expensive furniture, when Siberian cedar veneer is often used for its production.
Table 1. Volume of plywood sheets.
These characteristics include, for example, fracture strength, wear resistance, moisture resistance and weight. If for the same formwork weight does not play a special role, then when calculating the load on the foundation of a house in which floors or plywood wall cladding are used, it is of great importance.
Plywood 10 mm thick is one of the most demanded materials in construction. Its various types are used for pouring foundations (from 10 mm or more), for laying flat and durable floor coverings, erecting interior partitions, cladding garden houses, making various containers and much more. This building material goes on sale in sheets and packs of various sizes. Knowing the brand and format of the sheet, you can independently calculate how much it should weigh.
Product quality
Dimensions of plywood sheets.
The industry offers several varieties of products that differ in quality. It depends on what the appearance of the top layers of veneer looks like. FC and FSF can be of the first, second, third and fourth grade. The first grade is a product in which the outer sheet is perfectly smooth on both sides and has a white color. It is impossible to find knots on the products of the first grade.
The second grade has production with some drawbacks. It has slightly noticeable traces left from the repair of the upper plates, in the form of a kind of patches.
The upper layer of the third grade will have small knots on the surface with a diameter of up to 6 mm.
The fourth grade assumes the presence of knots up to 4 cm in diameter.
Film faced plywood can be of two grades - first and second. The lowest grade assumes light burns on the outside. This makes the product look unpresentable.
Moisture resistant analogs
This type of material has a density from 640 to 700 kg/ m³, which allows it to be used both in construction and in other areas. Plywood FC is actively used in the machine-ship and aircraft industry, in the manufacture of billboards, fences and other structures intended for use in the fresh air.
When creating plywood boards, several layers of peeled veneer made of wood are used, glued with a special compound and pressed. Hardwood trees (birch, beech, maple, poplar, linden) or softwood (fir, larch, spruce or cedar) can be used as raw materials for waterproof plywood. The thickness of the veneer in both cases does not exceed 3.5-4 mm.
Having an idea of how plywood is made and what it is, you can choose the material intended for one or another type of finishing work. A competent choice of plywood boards will allow you to perform the necessary work with high quality and for a long time.
Specific gravity
Film faced plywood characteristics.
The density of plywood sheets is not indicated by the manufacturer, but it can be calculated knowing the required parameters.
To calculate the specific gravity, you can use simple formulas or see its approximate value for a certain type of material in the reference literature. Construction handbooks contain general-purpose indicative data for plywood sheets made from birch, coniferous trees. The specific gravity in them is given for the specific technical conditions under which this or that type of plywood is produced. In them you can find that FSF from birch has a density in the range of 640-700 kg / m³, and made from conifers - about 550 kg / m³.
In the characteristics of products sold, the mass of 1 square meter of a given thickness is often indicated. This parameter is needed to calculate the formula yourself. The specific gravity will be equal to the quotient after dividing the mass by volume.
When making calculations, one should not forget that all units of measurement are converted into one system.
Let's look at an example of how to calculate the density of plywood:
Let's agree that birch veneer plywood has a mass of 24 kg / m³ and a thickness of 18 mm.
First, let's determine the volume that 1 m³ has.
To find it, you need to multiply the area by the thickness. Formula: Volume = Area x Thickness: Volume = 1 m³ x 0.018 m = 0.018 m³.
Using the formula for counting, we get:
Specific gravity = Mass / Volume.
24 kg / 0.018 m³ = 1333 kg.
In this simple way, you can calculate the required specific gravity numbers. This will help you figure out the total weight of the product in which the plywood sheets were used.
Peculiarities
Varieties of plywood.
The highest specific gravity will be for film faced plywood made from birch veneer. Plywood sheets, treated with a special film that improves all the characteristics of the material, are actively used during construction work, because this material is durable and has high wear resistance. These qualities of film faced plywood are fully manifested due to its high specific density. The use of laminate improves all the properties of the wood used and additionally protects against wood rot and fungal infections. Film faced plywood has different thicknesses. It is 9, 12, 15 and 18 mm. For the production of veneer, high-quality wood is used, characterized by high density and increased strength. To increase the wear resistance of plywood, many manufacturers purchase a special film of excellent quality from foreign manufacturers and use it to cover the outer layers. This allows the use of finished sheets in various areas of construction and production.
Film faced plywood is a product with increased wear resistance, which has proven itself as a formwork during concrete work to create a basement. Possessing increased moisture resistance, it has a number of advantages over other types. When building a foundation, builders have the opportunity to use such sheets for multiple formwork. It can be combined with other materials due to its ease of machining and stable sheet lines.The laminate is characterized by resistance to chemical attack and ultraviolet radiation, which allows plywood sheets to retain their quality characteristics for a long time.
Medium and thick sheets
Plywood of medium thickness and thicker is used in the construction of furniture, formwork, partitions, flooring and many other products. To cover a flat underground, 8-10 mm is enough. If you have to cover a not very even base, then products with a thickness of 12 mm will be needed to level the differences. The weight of such a sheet of 1220 x 2440 size from birch veneer will be 23.2 kg, from coniferous - 20.6 kg (for laminated veneer it will be 30 g more).
This is an important advantage for floor decks subject to heavy loads.
When installing on the floor, it is often more convenient to place square layers than rectangular ones. It is necessary to prepare for the fact that the weight of one such sheet of birch veneer with dimensions of 1525 x 1525 x 18 is perceptible - 35.8 kg. Working with thick plywood products requires physical strength and skill.
When placing an order for plywood, you need to pay attention not only to its grade, quality and dimensions, but also to weight as an important consumer characteristic.
They take into account how many sheets are in one bundle, which is important when loading and transporting building materials
Characteristics that determine weight
For the production of plywood, veneer of several species of wood is used, differing in the methods of obtaining. The texture, specific gravity, natural moisture and moisture resistance of wood affect the characteristics of veneer, the weight of which may vary. The thickness of the veneer layer also differs from one type of product to another. Therefore, it is impossible to say in advance how much plywood weighs without taking into account the specifics of its structure.
Most of all, the weight of a plywood sheet is affected by:
- wood species (the specific gravity of birch material is greater than that of coniferous);
- thickness;
- square.
For gluing the layers, fixing the laminated coating (if present), various types of adhesives are used, including phenol-formaldehyde, bakelite, casein, melamine and others.
Despite the differences in the structure and composition of the adhesives, none of them fundamentally affects the weight of plywood. The method of surface finishing and the quality of the coating that can be applied to it is not essential. Even lamination, which provides the most reliable waterproof protection of FSF or FSK plates from external influences, does not noticeably change the weight of plywood, because the polymer film has a very small mass.
An elite product is homogeneous in structure and density, unlike products of low grades, so the weight slightly depends on the grade.
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