How much does a cube of timber 100x100 weigh. How much does a bar of different sizes weigh

In this article, I will consider only pine material growing in the territory in the Middle Part of Russia, since this material
the most demanded in the construction market of the city of Moscow. It is from pine that country wooden houses are built.

I’ll make a reservation right away that the pine growing in Siberia has a denser texture, and weighs more and costs an order of magnitude more expensive. Distinguish her
You can even visually, but this is a topic for a separate article.

The weight of one cubic meter of freshly sawn and processed into edged pine lumber is about 860 kg. Knowing the types of sections
timber, you can calculate the weight of 1 piece of timber.

• 200x200x6000mm. (4.1pcs in 1m3):
  • 860kg. : 4.1pcs =209.7kg.

    The weight of one bar with a section of 200x200 is 210 kg.

• 200x150x6000mm (5.5 pieces in 1m3)
  • 860kg. : 5.5pcs = 156.3 kg.

    The weight of one beam with a section of 200x150 is 156 kg.

• 200x100x6000mm (8.3 pieces in 1m3)
  • 860kg. : 8.3pcs = 103.6 kg.

    The weight of one bar with a section of 200x100 is 104 kg.

• 150x150x6000mm (7.4 pieces in 1m3)
  • 860kg. : 7.4pcs = 116.2kg

    The weight of one bar with a section of 150x150 is 116 kg.

• 150x100x6000mm (11.1 pieces in 1m3)
  • 860kg. : 11.1pcs. = 77.47

    The weight of one bar with a section of 150x100 is 78 kg.

• 100x100x6000mm (16.6 pieces in 1m3)
  • 860kg. : 16.6 pcs. = 51.8 kg.

    The weight of one beam with a section of 100x100 is 52 kg.

• 100x50x6000mm (33.3 pieces in 1m3)
  • 860kg. : 33.3pcs. = 25.8 kg.

    The weight of one beam with a section of 100x50 is 26 kg.

To determine for yourself how much it will weigh, let's say a bar with a length of 4000mm and 3000mm. I will give an example of a calculation formula in which
a necessary condition for the calculation is the number of pieces in 1m3.

• For a beam, let's say 200x200x3000mm:
  • 1 : 0,2 : 0,2 :
    3 = 8,3 PCS. in 1m3
  • 860kg. : 8.3 pcs. = 103.6 kg.

    The weight of one beam with a section of 200x200 and a length of 3000mm. 104kg.

• For timber 200x200x4000mm:
  • 1 : 0,2 : 0,2 :
    4 = 6,25 PCS. in 1m3
  • 860kg. : 6.25pcs = 137.6 kg.

    The weight of one beam with a section of 200x200 and a length of 4000mm. 138kg.

    At the end of the article, I want to note that these calculations are valid
    only for a beam of clear stated dimensions with the correct geometry, i.e.
    e. corresponding to GOST 8486-86.

    For "Armenian beam", which is needed at 4200 rubles per 1 m3 separate approach, because qty. in 1m3 every time you need
    calculated separately in accordance with the dimensions that the beam has.
    

    Let's be completely honest and finish what we started!

    • "Armenian beam? Has a section of 135x135x6000mm. (9.2 pieces per
      1m3):
    • 860kg. : 9.2pcs = 93.47 kg.

      The weight of one beam with a section of 135x135mm. long 6000mm
      is 94kg.

    • Compare the weight of a normal beam 150x150mm and 135x135mm.
      • 116kg. - 94kg. = 22 kg. difference from 1pc. timber
      • 22kg. X 7.4pcs in 1m3 = 163kg. difference from 1m3

        let's say the client takes 20m3 of timber 135x135 as 150x150 but at 4200 rubles.

    • 163kg. X 20m3 = 3260kg i.e. for 3 tons
      260 kg. the client was deceived, because 3260kg. air!
      Make conclusions and other calculations yourself Dear Readers!

When we want to know how much a 100x100 edged pine weighs, then in most reference books we find the weight of coniferous lumber (edged pine) indicated as the mass of 1 cube (cubic meter, cubic meter, m3). For practical activities, when buying lumber from natural wood, building houses, baths, country houses, or making any structures from wood, such as roofing (roof rafters), this option for estimating weight is inconvenient. The mass of 1 cube of softwood lumber implies that you are able to do the calculations yourself. For example: recalculate cubes in m.p., and then calculate the weight of one wooden beam 100x100 of rectangular section. I do not argue, the calculations are not complicated, but they require a reference table at hand, which of course is never around. Therefore, as our experience of working with customers in construction has shown, it would be much more convenient to have a table that does not indicate the weight of 1 cube of coniferous materials, but provides data on the mass of one m.p., for specific sections of lumber. Today we present a table of the weight of rectangular wooden beams 100x100.

A useful note for those who want to know how much edged pine 100x100 weighs. Please note that the mass of pine wood is highly dependent on its moisture content. The higher the moisture content of the wood, the more the natural wood weighs. With wooden beams made of pine, the situation is the same. In practice, you can buy freshly sawn pine wood, freshly fluffed into beams, or purchase a tree that is drier with a moisture content of 20%. Both types of pine wood are of high quality, business-like and can be used in construction, although they will weigh differently in kilograms. Maybe we need to find a dry tree or buy what we have and hand it over to the dryer? No, do not rush to look for the nearest drying chamber or dryer. Let's first deal with the moisture content of natural softwood, which is considered normal. A completely dry tree always costs more and we do not always need dry pine wood. For example, a chamber-drying pine beam is usually bought not for construction work, but has a different purpose. This is softwood edged lumber intended for pine carpentry work. Pine beam 100x100 chamber dried, completely dry, with a moisture content of 8-12%, is either used in the manufacture of joinery, or subjected to further processing, dissolving into boards. The result is a very high-quality pine board that no longer needs to be dried and will not lead to moisture loss.

Freshly sawn pine wood should not be mistaken for wet wood. Wet pine beam 100x100 is pine wood that has been wet and accumulated an excess amount of moisture, which is not typical for softwood construction lumber. Naturally, the weight of such a 100x100 wooden beam will differ markedly from the mass values ​​\u200b\u200bspecified in the table. It cannot be used for construction. By the way, it is believed that it is better not to immediately “put into action” a freshly sawn coniferous forest, but to let it rest under a canopy for a while until it loses some of its moisture. This is a kind of natural drying of wood. What is the length of a wooden beam 100x100 (section)? The most common (traveling dimensions) along the length of a 100x100 beam made of natural pine wood are: 3 and 6 m. Less commonly, you can find a wooden beam 4 m long for sale. To assess the weight, the universal mass indicator is how much one running meter weighs. Knowledge of the mass of 1 m.p. allows you to calculate how much it weighs, the weight of lumber of coniferous trees of any length with a dissolution size of 100x100. Therefore, in Table 1, we indicated the weight (how much it weighs) for such sizes of natural wood pine beams as: 100x100x1000, 100x100x3000, 100x100x4000, 100x100x6000 mm.

Table 1. BEAM 100x100. Table 1 shows the mass of a freshly sawn pine timber beam with a section of 100x100 mm and a length of 1 meter, 3 meters, 4 meters, 6 meters: 100x100x1000, 100x100x3000, 100x100x4000, 100x100x6000. Table 1 shows the mass of a wooden beam with a wood moisture content of 20% pine with a section of 100x100 mm and a length of 1, 3, 4, 6 meters: 100x100x1000, 100x100x3000, 100x100x4000, 100x100x6000. Table 1 shows the mass of a dry wooden beam (after chamber drying) with a moisture content of 8-12% pine with a section of 100x100 mm and a length of 1, 3, 4, 6 meters: 100x100x1000, 100x100x3000, 100x100x4000, 100x100x6000.

When designing various kinds of wooden structures, such an indicator as the weight of the lumber from which they are supposed to be made is often used. It would seem that such information can be obtained from specialized directories. However, in such literature, unfortunately, only the weight of 1 m 3 of a bar or, for example, a board is often indicated. Lumber is often purchased not by cubic meters, but simply by the piece.

The length of the timber sold by woodworking workshops can be different. But most often, such enterprises sell sawn timber for 6 m to the population. So what, for example, can be the weight of a beam of natural moisture 150x150x6000 mm? To find out, you will have to do some simple independent calculations.

What determines the weight of lumber

It is clear that the more moisture is contained in the timber, the heavier it will be. However, the weight of such lumber depends not only on this factor. When performing calculations, in this case, it is imperative to take into account the characteristics of the wood species itself. Indeed, for example, oak timber in any case will be heavier than birch lumber.

What is natural moisture

So, how to calculate the weight of a wooden beam of natural moisture 150x150x6000 mm of a particular breed? To make such calculations is actually not too difficult. However, before proceeding with the calculations, it is still worth deciding on the concept of "natural humidity".

In construction and in the manufacture of various kinds of products, only wood with a moisture content of not more than 12-15% is used. And even such boards and timber, in most cases, are additionally dried for some time before use.

The moisture content of only sawn wood will, of course, be very high. In any case, 12-15% of its rate will exceed significantly. It is this humidity that is commonly called natural. That is, we ultimately need to find out the weight of a wooden bursa of standard length with a section of 15x15 cm, made from freshly sawn wood.

We take into account the breed

The basis for performing such an operation should be taken from the table of lumber weights in cubic meters.

Perform the calculations in this case as follows:

find out the number of bars of a given length and section in 1 m 3;

by simple division, the mass of one such unit of lumber is calculated.

In one cubic meter of timber, having dimensions of 150x150x6000 mm, thus, 1: 0.15: 0.15: 0.15: 6 = 7.4 pieces will be contained. To find out the weight of the beam, in this case you need:

see the weight of a cubic meter for this particular type of wood;

divide this parameter by the number of bars in a cubic meter.

For example, at a moisture content of 15%, 1 m 3 of pine lumber weighs, according to the table above, 440 kg. That is, the calculation in this case will look like this:

440 / 7.4 = 59.5 kg.

It is also easy to determine that the weight of a bar 150x150x6000 mm from larch of the same moisture content will be equal to 90.5 kg. For aspen, this figure will be 67.6 kg.

Instructions for calculating the weight of natural moisture timber 150x150x6000 mm

Thus, it is not too difficult to find out the weight of lumber of a given moisture content. To do this, you just need to solve two simple mathematical examples. But what will be the weight of a bar of natural moisture 150x150x6000 mm? In order to determine this, among other things, you need to know the last indicator itself for a particular type of wood.

You can also get such information from special tables. So, for example, the natural moisture content of pine is 60-100%, larch - 50-70%, birch - 70-90%. These parameters should be taken in this case to calculate the weight. In this case, for obvious reasons, it will be impossible to make exact calculations.

So, how much does a beam weigh 150x150x6000 mm of natural moisture? Based on the data in the table above:

pine beams of such dimensions will weigh from 580/7.4=78.3 (60%) to 730/7.4=98.6 (100%) kg;

the weight of a bar of natural moisture 150x150x6000 mm from larch will vary from 820 / 7.4 = 110.8 kg to 930 / 7.4 = 125.7 kg.

In a similar way, it is possible to calculate beams of such dimensions of natural moisture for any other rock.

Specific gravity

There are only two types of wood density:

volumetric weight (density of the physical body of wood itself);

specific directly wood fibers).

Above, we considered a method for determining exactly the volumetric weight of a beam 150x150x6000. Natural humidity or given in such calculations is an important indicator. Indeed, in this case, the weight also depends on the amount of moisture contained in the wood structure. But if desired, for beams, you can also calculate the specific density index.

You can do this using the table above. Calculations in this case will be carried out without taking into account humidity. That is, to calculate, you need to find the number of beams of a certain size in a cubic meter and simply divide the indicator from the table by the resulting number.

Thus, for pine 520 / 7.4 = 70.3 kg - this is the specific weight of the timber 150x150x6000. Natural humidity - permissible operational or any other - in this case is not taken into account in any way.

Deception when buying a bar with a section of 100x100x6000mm. Fraudulent sale scheme, damage in tons. With the help of not tricky mathematical operations, I show the damage in tons.

In this article, I will consider only pine material growing in the territory in the Middle Part of Russia, since this material is most in demand in the construction market of the city of Moscow. It is from pine that country wooden houses are built.
I’ll make a reservation right away that the pine growing in Siberia has a denser texture, and weighs more and costs an order of magnitude more expensive. You can even distinguish it visually.
The weight of one cubic meter of freshly sawn and processed into edged pine lumber is about 860kg.

Let's recall the calculations of the weight of the bar GOST 8486-86 100X100x6000mm:

Consider all the "air" sections of the beam 100x100x6000mm., which I have seen over the past five years.

In the table below, all sections of the "air" beam, calculations and deception schemes.
I apologize for the small inaccuracies in the calculations associated with rounding, I think that the essence of deception does not change much from this. All prices for the beam section are given as of 01.01.2012. operate in the markets of the city.

How much the bar GOST 8486 weighs is no longer a secret for anyone. However, how much the air bar weighs remains a mystery to many. Let's look at the above sections and evaluate the damage in kilograms by finding out the difference between "Air" sections and GOST.

The air section of the beam is 85x85x6000mm. its weight and difference from GOST in kilograms.

The air section of the beam is 90x90x6000mm. its weight and difference from GOST in kilograms.

The air section of the beam is 95x95x6000mm. its weight and difference from GOST in kilograms.

The most common timber in the construction of houses is a material with a section of 150x150x6000 mm. In the process of designing a future building, developers often have a question, how much does such a beam weigh?

General information

Unlike logs, which have a rounded shape, a beam is a product of a square, semi-cylindrical or rectangular section. Depending on the purpose of the material, it may have other forms.

Types of timber

There are several types:

• Normal;
• profiled;
• Glued profiled, etc.

What determines the weight

The weight of a bar 150x150 mm may vary depending on its type and degree of drying. So the glued product undergoes mandatory drying, respectively, it is lighter.

In addition, much depends on the type of wood from which the material is made, as well as its section. It is extremely clear that, other things being equal, the weight of a beam of 100x150 mm will be less than that of a material with a section of 150x150 mm.

What is humidity?

First of all, it is necessary to deal with humidity, since it most of all affects this indicator. And so, the moisture content of a tree is the ratio of the mass of moisture contained in a certain volume of wood to the mass of absolutely dry lumber.

Advice!
It will not work to determine the moisture level with your own hands without special devices, especially for a beginner.
For this, there are special moisture meters - non-contact or needle.
The first option is preferable.
This compact device can be useful in the future when buying furniture.

Humidity is expressed as a percentage. This indicator of a freshly cut tree is 70-80 percent, "transport" wood has 20 percent moisture, while "dry" wood - 8-12 percent.

I must say that humidity affects not only the mass of lumber, the price of the product also depends on it. In addition, depending on the degree of humidity, the intended use of the beams also changes.

Moisture content of lumber

Moisture in the wood is located between the cells and in the cavity of the cells. Let's look at how dangerous it is for lumber during construction.

During the drying process, the evaporation of water is carried out in two stages:

• Evaporation from the intercellular space.
• Evaporation from the cell cavity.

Upon contact of lumber with water after drying, the cells do not absorb moisture, since they are filled with air, and moisture evaporates from the intercellular space by itself, i.e. natural way.

Importance of humidity in construction

In production, the workpiece should be dried, not the finished product. If raw wood was used in the manufacture, then in the process of moisture evaporation it can be deformed, change the geometric dimensions.

Note!
The mass of the product is extremely important in the calculation of structures that create loads on load-bearing structures.
For example, exact values ​​\u200b\u200bmay be needed when choosing and calculating the foundation.

The weight of lumber is important not only when calculating loads, but also during transportation, since transport companies are not interested in the amount of material, but in their volume and weight. In addition, dry products take up less space, respectively, you can load more of them. It follows that the price of transportation of dry material is always lower than that of "raw".

Advice!
To prevent the lumber from dampening during storage, it is necessary to use covered areas or cover with cellophane film.

In the photo - timber 150x150 mm

Weight calculation

The calculation instruction is quite simple.

This is done as follows:

• The weight of one beam is equal to the weight of a cube of lumber / divided by its number.
• To determine the number of pieces in a cube, you need to know its dimensions. For example, you need to find out the weight of a beam is 100x150x6000, first we find out the amount of material: 1: 0.100: 0.150: 6 \u003d 11.1 pcs.
• Knowing the mass of the cube, and the number of pieces, it is not difficult to calculate how much a bar 100x150 weighs: 860 / 11.1 = 78 kg

Note!
Moisture is an ideal environment for the development of rot, fungus and mold.
If you use undried lumber in the construction of buildings and structures, then problems are guaranteed to arise during operation.

Below is the weight of pine beams of different sections:

• 150x150x6000 mm - 7.4 pieces are placed in one cubic meter, its weight is 860 kg. Weight 1 pc. section 150x150 is 116 kg.
• Weight1 pc. with a section of 150x100 equals 78 kg, 11.1 pieces are placed in one cubic meter.
• Weight 1 pc. with a section of 100x100 equals 52 kg, 16.6 pieces are placed in one cubic meter.

Note!
If the weight of a cubic meter of a pine beam significantly exceeds 860 kg, then the product is not suitable for high-quality house construction due to the high level of moisture content.