It is important to know that its tilt angle and area are also important. The calculation of the height is influenced by such factors such as the climatic conditions of the region of residence, the material of the roof and crates, personal wishes, etc.
For example, a lot of snow accumulates on the slopes with a low angle of inclination, which can entail a break of the roof.
However, with high ice skates, the roof becomes more vulnerable to a strong wind. Not only practical design indicators (durability, durability), but also aesthetic ones depend on the size.
The roof protects the house from the effect of the external environment, heat loss and gives the building a complete view, so it is important to fully calculate all the dimensions of the parts, including height.
It should also be taken into account the parameters of the rib (skate) of the roof, since the structure is largely dependent rafter system and crates.
In addition, it affects the total height. If you do not know the characteristics of the ribs, it will be difficult to calculate the optimal area of \u200b\u200bthe roof, and as a result, the number building materials for further work.
The appearance of the insulation also affects the parameters. With the correct implementation of all calculations, it is possible to build not only a solid, durable roof, but also to save on the purchase of materials.
You will definitely know their needed quantity and do not have to overpay for excess, which will not be suitable.
The ski run is used as a joint connecting two roofing rods (like duscal roof).
Slinged racks, a doom and roofing material on both sides are based on it, so it should be the most durable in the whole design.
Calculate optimal height You can the following rule: the length of the skate is equal to half the length of the span of the house multiplied by the tanglex angle of inclination.
Also, the correct calculation of the height of the roof is impossible to do, if you do not know its type.
In most cases, the angle of the skate varies from 8 to 45 degrees. The less angle, the greater the load falls on the rafter system (especially in winter And when carrying out work on the roof itself), therefore, additional strengthening and adjustment in the calculations will be required.
However, with an increase in the angle, the cost of building is increasing.
The size of the rafter is determined from their cross section and length: what they are more, the greater the load is able to withstand the system.
For single Roof It is easiest to make calculations and installation, this does not require greater experience in construction.
First you need to measure the width of the whole building in centimeters. Use for measurements building level and roulette.
After this, the actions must be divided into the received value to the second number of the planned ratio of the parties.
For example, if you plan to build a design with a ratio of 1: 4, then the width of the house (in cm) needs to be divided into 4, as a result, it turns out optimal option Heights with a small error.
It is also necessary to take into account the ratio of the height of the roof to the height of the house.
With a double roof, it may be a little more difficult, since it is necessary to know exactly the size of the angle of inclination.
For this case, the following formula is applicable: Half value from the width of the building is divided into tangent angle of inclination.
For example, a tangent of an angle of 40 degrees is 0.8, therefore, half of the width of the building is divided by 0.8.
The four-tight roof is gaining popularity today thanks to its strength, attractive mind and the ability to easily install doors and windows.
There are two types of such roofs:
To calculate the optimal height four-sheet roof You can use the formula for a duplex. Only the width of the house should be divided not to 2, but by 4.
The complexity of calculations is due to a more massive design that needs to be installed. The standard height for such roofs is about 2.5 m, with an error of 0.5 m.
The most difficult for calculations is the attic roof or a hollow roof (in the people it is called "broken"). In the design there are two skates with faders.
As a rule, such roofs are used in case the attic is planned to make an attic.
Initially, it is necessary to calculate all the angles of inclination. You can use the formula for a bone roof.
It is important to adhere to the following rule: the lower angle should be more than 40 degrees, and the top in the area from 15 to 40.
Correctly calculated cover and the height of the roof directly affect its appearance, durability and durability.
If you are not sure that you can produce yourself right calculations, please contact a specialist for help.
Determining the size and only after that purchasing material. In order to make calculations, it is not necessary to contact specialized organizations. In the article we will discuss how to correctly calculate the height of the roof, and what affects it.
The skate is called the horizontal edge of the conjugation of the peaks of two roof rods. Owning and improving the height negatively affects the operation of the roof, spoils the appearance of the building. Therefore, when calculating is not sufficiently guided by the only taste. Before calculating the height of the skate, it is important to pay attention to various technical conditions.
In the article, we will take the default roof with equal skates along the length and angle of inclination. This will simplify the definition of height, although all the principles described are applicable to asymmetric structures.
According to geometry, one of the skates will be hypotenuse, and the distance from the skate to the base with the cathe.
Now we go for each item in more detail.
For different materials, there are own requirements for the slope of the slope. From this indicator will depend on the calculation of the height of the skate. There are general principles of choice Material depending on the corner of the skate:
It should be remembered that the greater the bias, the greater the material for the roof cover it is necessary. So, if you take the need for an angle of 7-10 ° for 100%, then an angle of 45 ° will require 150% overrun, and an angle of 60 ° is all 200%.
The size of the skates relative to the width of the house will change along with the height of the skate.
There are two varieties of houses: with an attic room and without it. For each option there are own conditions for calculating the height of the skate. If the attic room is dwelling, then 30-40 cm is added to the growth of the highest owner itself. But it is better to think about the guest, making a ceiling at an altitude of 2.4 meters. But it is important to remember that it is only a ceiling, not the height of the roof. This will need to add a half meter or more, depending on preferences.
If the attic room is non-residential, then the height of the skate is calculated under the influence of fire safety. One of the items oblige owners to provide a pass-through passage under the roofing height of at least 1.6 meters, and the 1.2 m wide. With complex rafter systems, these sizes can be reduced by 0.4 m. This space will provide free air exchange and passage for repair, inspection.
Bescaneous buildings are built so that walls are additionally built over the overlapping of the previous floor. For example, in semicard buildings, the height of the walls is increased by 1.4 meters. In such structures, the height of the roof is counted from the bottom face of Mauerlat. Such constructions are suitable for climatic zones with strong winds. This makes it possible to reduce the slope of the skate.
Cellular structures are popular in the construction of garages, warehouses and other small household buildings. Usually do not provide attic overlapThereby saving material and time.
Climatic conditions directly affect the height of the skate. Therefore, in different cities there is a "golden" slope of the skate. Atmospheric phenomena include the following factors:
Determine the features of the region of residence can be addressed to the local meteorological service or reference book. In regulatory documentation SNiP 23-01-99 or SP 20.13330.2011 there are weather maps and recommendations for construction.
The calculation of the height of the roof depends largely on your preferences. There are two main ways:
We will deal with the mathematical method of counting. As already mentioned in the first subtitle, the default was a two-tie an equilibried roof. We have the opportunity to calculate the necessary height if we know the angle of the slope and the distance between the skates. Now you will need a brady and calculator table. In reference books, we find the magnitude of the tangent of our angle, and then we multiply her half the length between the skates. As a result, the height of the skate is obtained.
Consider the calculation on the real example. Suppose that our structure has dimensions of 7x10 meters. At the same time, we are in the zone with average winds, and in the role of roofing we use metal tile. It is not planning to equip the attic, and take a bias to be equal to 20 ° so that rain water flows down without problems.
It turns out that the length of the category is 7/10 \u003d 3.5 meters. According to the Tangent Table 20 ° table is 0.839. Now I turn out the resulting numbers: 3.5 * 0.839 \u003d 2.94. So, the height of the ridge of a two-tie roof, from the bottom of the Mauerlat, is 2.94 meters.
The graphic method is suitable for those who have a sheet of paper, a pencil and a ruler with a transporter. All that will need it to draw the roof in the context, by observing the scale. To do this, draw a horizontal line, mark on it the boundaries of the roof base. Determine the middle and forth the perpendicular. From one of the sides with the help of the transport, draw the line under the desired angle. The intersection point will show height, you just need to measure it with a ruler.
The resulting result will be close, you need to add 2/3 of the thickness of the rafter foot. Small deviations are permissible and critically affect the operation of the roof. These errors add up of the need to make ventilation under metal tile and crates.
In order to note the desired height in reality, it is enough to determine the middle of the building. Then to kill the vertical bar or helper at the desired height. After the calculation was made, try to transfer it more accurately from paper to a real building. Then the roof will last for many years and will not give leaks into the most rainy days.
The final stage of building any house (be it a spacious main home or a small country house) becomes the arrangement of the roof. It is she who gives the exterior a presentable and completed appearance, but at the same time performs very important function - Keeps warm, creates a cozy, most comfortable and pleasant atmosphere inside. It is this element of any structure without exaggeration called one of the most important.
It is especially important to know how to calculate the height of the roof for the house, and accurately understand how to make it right. That is why you need to pay for some time to study this issue. Inaccuracies made in premacent computing, lead to serious problems with which it is too difficult to cope. Often to eliminate errors have to start working on the design of the roofing. For example, if the rods are made with a small tilt angle, such a design will cause serious harm to winter snowfalls (due to snow accumulation there is a risk that will be a roof break). It is logical to assume that you can simply make a high horse and all the problems will be solved, but it is not so, because too high the roof is most vulnerable to the gusts of the wind.
Thus, proceeding to the calculations of the roof and angles of the tilt of the skates, as well as the arrangement of the roof, it is necessary to remember that at its height, there is a significant impact:
A number of other factors are largely affected by the parameters of the design, for example, direct dependence is from the layer of the laid insulation or the installation of snow concreteners. The sizes of the skate are associated with the features of the rafter system, but at the same time can increase the total area of \u200b\u200bthe roof and the number of materials required for its arrangement.
Everything described above confirms the fact that the strength of the design, the durability of its operation, aesthetic and harmonicity depends on the size of the roof. appearance the buildings.
The roof type has the most direct effect on the calculation and the formulas used for it, as well as the value and, consequently, the consumption of material to be purchased for the roof arrangement. Today, such structures are erected most often:
For calculations of different forms of roof, this value is used as the size of the skate. Under this title is understood to be the top, horizontally located rib design, which was formed when crossing two rocks of the roof (inclined planes).
There is a horse on all types of roofs, except for tents and dome. If the design is a simple two-bundle, then it is one, if the complex - then the skates are formed from two or more. On the skate runs, during the construction of the roof, rafting legs are based on, and on the basis of which roofing material is selected for the final coating, the base of the skate is selected.
Know how the height of the roof of the house counts correctly, you need for the construction of reliable and sturdy construction, as well as in order to predict the preliminary construction costs, and schedule the budget. In the calculations of the rational angle of inclination, the material is taken into account from which it was decided to lay roof: some roofing coatings can be laid at an angle of up to 90 degrees, while others are only 15 to 60 degrees.
Selecting, with what tilt of the planes to choose a roof for your home, it is necessary to take into account the functionality, the overall appearance of the resulting structures (because you want to get aesthetic structure) and climatic conditions. As practice shows, for European countries, an angle of 35-40 degrees can be called an ideal solution.
In principle, if we are talking about simple designs Roofs, it will take quite a bit in order to calculate the height of the roof: a calculator and several well-known principles from the basics of geometry that are taught on the school program.
We take the basic principle of calculation from the rule that the length of one category in the rectangular triangle will be equal to the length of another if it is multiplied by a tangent angle formed with the base.
If a two-tie design is selected, then in this case the height of the skate is also very simple: the width of the house can be divided into "two", and then multiply by the tangent angle formed by the slope of the skates. Consider for clarity described above how to calculate the height of the two-sheet roof on the example of a house that the width will be 10 meters . So, for computing:
The most applied today are four-tanta structures, And for their calculation, you can use the same principle (formula), as for how to calculate the height of the ridge of a double roof, but only the width of the house is not divided into two, and four. Plus, engaged in calculations for a four-piece roof, it is important to take into account the length of the skate run directly, as well as the rafter system.
The most complex calculations accompanied the arrangement of the roof of an attic type, a characteristic feature of which can be called the presence of two slopes with a break, which on the part makes it a general appearance as if "broken". Arrangement loan roof Allows you to increase the functional area of \u200b\u200bthe attic. The calculation of the holm roof is based on the example of the calculation of the height of the duplex, but should not forget that the roof does not have one angle of inclination, but several. Before moving to settlement operations, it is necessary to decide on them. Practice shows that it is best to choose such values \u200b\u200bof the corners:
To simplify the calculations, but at the same time get the most accurate result, the specialists prefer to use the "golden section" method, for this in the drawing the roof circuit fit into the circle. Resorting to it successful rule, you can easily solve the question of how to correctly calculate the height of the roof, and most importantly, to avoid inaccuracies in the calculation, which in practice will lead to the fact that general form The structures will be inestretical, non-harmonic and simply ugly.
If the erected roof of a complex shape, then it requires more volumetric, long-term calculations. For calculations, data on the cross section of the rafter, step between them, the magnitude of the rafter structures is used. In addition, the size of the roofing windows, chimneys, the presence of parapets and soles is taken, will necessarily need to analyze the possibility of support and endurance of the foundation.
Today, anyone who does not know how to calculate the height of the roof, to make it can, contacting the assistants, to find which you can on the Internet. It can be specialists who are ready to provide such services online, or a special Internet resource called "Calculator", in which case the site visitor enters the requested data and the system produces calculations on them.
Choosing, to whom to ask for help, remember that the hip roof - the design is not cheap, so it does not tolerate errors and inaccuracies. The correctness of the calculations must be guaranteed. For newbies, the calculation of four-tight, hip and tent roofs are quite complex, so they are better to entrust the designer specialist with experience in this area. Independently you can only deal with computing relating to single-table designs For cozpostroops and garages, or simple duct, constructed to cover a small country house.
The classic roof of the Russian hut is a two-screw. The rafter system is quite simple for it, and this has ensured a greater popularity of such a type of roof. Walm roof (four), for example, geometrically more difficult. It is more difficult to calculate and construct it, so we take on the calculation of the symmetric roof with two slots. It consists in determining the length of the rafters that form a pair. Each of these steam joins the neighboring rafting farms with the help of a dory. The ends of the roof are triangular frontones. The length of the rafter, like the height of the roof, will be determined by its angle. How to choose it right? This will tell the prevailing weather.
Double roof is the most popular roofing design to equip private residential buildings, Baths, garages and other buildings. Construction of the roof of this type is a rational solution to the issue of protecting inner premises from penetration of precipitation, wind and cold. In the process of designing a two-tie roof, the central place occupies the calculation of the height of the skate, the definition of the slope and the skate area. From these three parameters depends on the service life and the effectiveness of the overlap, so in this article we will tell, how to independently calculate the main parameters and specifications Roofs, without using the Calculator program.
The skate is called the highest point of the two-tie roof, a horizontal edge, which is located in the place of connecting the planes of the skates. It is mounted at the final stage roofing work, but before installing the crate on the rafting legs. The length of the rope of the bartal roof corresponds to the length of the skate. This element of the rafter frame solves the following tasks:
Important! In the process of designing the roof, you need to choose and correctly calculate the height of the skate. If the room located under the roof arch is used as a residential, then the choice is made, based on their desired ceiling height, in other cases the calculation is performed by relying on the recommended angle of slope.
The easiest way to make calculations using a special Calculator program by entering the source data to which, you can determine the height of the skate, the area of \u200b\u200bthe rod and the underpants room.
Perform the calculation of the height of the skate and the area of \u200b\u200bthe double roof and the rest of the associated parameters can not using the Calculator program. This requires knowledge of elementary geometric formulas, which, we hope you did not have time to forget from school times. Alone to calculate the horse can be two simple methods:
Important! The most reliable way to perform the calculation of the height of the skate and Skate Square is a special online calculator. To take advantage of them, you need to enter the source data: the length and width of the house, the slope of the skate.
The most important factors affecting the selection of the height of the skate compound are related to natural conditions zones in which construction takes place. According to the construction standards, this parameter is chosen based on the following conditions:
Note! The height of the skate compound affects the useful area of \u200b\u200bthe attic room. To equip a living room under the roof, you should raise the roof at a height of at least 2.5 m, however, it will negatively affect the useful area due to low sidewalls.
One of the main buildings of the building is roof. Without it, the construction will not be able to serve for a long time and it will be impossible to live in it. The roof has a complex design and requires a responsible approach during design and installation. It is necessary to choose correctly not only its shape, but also the angle under which the skates will be. The angle will depend on how the calculation of the height of the skate is performed. How to find out this size? This will be discussed in the article.
The lip of the roof is the top point of the roof. It is a horizontal edge edge. There is an element in place where the rods come in one point. The height of the skate is one of the fundamental factors that can affect the form of a future roof. Wrong selection of the position of the skate can lead to the fact that the roof will not be able to hold the alleged loads. It will also lead to a deterioration. external view Roof. Not all personal ideas regarding the roof design can be realized in reality, since they can contradict the elementary rules for choosing the height of the skate. The calculations take into account several main factors that directly affect the height of the skate. These include:
These parameters can not be taken into account separately from each other, since they are directly interrelated.
It is impossible to adjust the climate under the shape of the roof and the height of the skate, so you have to reckon with what conditions are in one area or another. Often, they are the determining factor, how many rods will be the roof and what will their angle will be. If the house is built in an open area where there are no forests, then you can safely talk about high wind loads. Choosing a big angle for the roof, you can face the fact that it will become a good sail that can be easily demolished with a good impulse. That is why for such territories, the angle of the skates with a value of up to 10 ° is selected. Do not worry about the fact that snow cover can be delayed on the roof. It will simply be blown away by the wind.
Water has a delay in gentle surfaces. Therefore, for the terrain where heavy rains are often there, it is necessary to choose a sharp angle that can reach 30 or more degrees. At the same time, water will be able to freely leave without leaking through the gaps. If this happens, then the rafter system will unsubscribe and eventually will crush or be destroyed by fungus. When the dwelling is planned near the forest, where there are often snow, the roof angle can be selected up to 45 °. In this case, the height of the skate will be the highest compared to the two previous cases. Thanks to this corner, a smaller amount of snow will be lured, and it can be easily removed from the skates.
Tip! Information about how an angle, and accordingly, the height of the skate will be relevant for the roof can suggest a local meteorological service. It is her employees to clarify the prevailing weather conditions.
This is the following factor that directly affects the height of the skate. The space under the roof can be used in different ways. Previously, it was used only for organizing a cold attic. It could store various things or food. In this case, the space was separated from the main premises only by the beams on which the finish is attached. There is an option and unbeliving design. In this case, there is no partition between the underproof space and residential premises. It also affects what the height will be selected for the roof skate.
The underpants space that has a dwell separation is used not only for storing things, but also as a residential. In this case, it is called the attic. The residential premises should be such a height so that it was convenient to move without stitching. This factor affects the height of the skate. Usually, for these purposes, a number of 2.3 meters is taken as the basis. Measures are made from the lower tier to which the roof is mounted. In this case, it is important to take into account the greatest growth of tenants. A 40 cm reserve is added to it to not cling electrical devices and partitions.
When the attic is unused, then its height is determined by the norms fire safety. The height of the skate in this case should be such that there is no obstacles if it is necessary to move inside in an emergency or during the maintenance of the solo system. The basis of the height is taken by a figure of 1.6 meters in height, which will be enough for humans. The width of the passage should be at least 1.2 meters. If the roof is a multi-communal and has a complex rafting system, then the sizes in flights can be reduced by 40 cm.
In the case when the underfloor space is combined with the main premises, the height of the skate can be made less. This will reduce the cost of heating, and will also bring comfort with me. Typically, the space has a two-sheet roofs. In such a design, the walls should be at least 1.4 meters high. At the same time, the bottom of the Mauerlat is served for the height of the skate. This option of roofing system will be especially relevant in areas where there is a large number of winds. The load at the same time is distributed in the best possible way.
Note! The attic space is not provided in various economic buildings. This will entail additional costs, but often will not have practical value.
Everyone finish coating For the roof requires or admits a certain angle of inclination, which directly affects what the level will be raised. There are several factors for the flooring, which affect the corner of the skate. These include:
The size of the coating elements affects the number of joints between them. The smaller the individual elements of the roof, the more seams between them are located. If you make a roof with such a flooring with a minimum angle, then there is a high probability that the moisture is leaked in the slot and harm the roofing system. The larger the sizes of individual elements for the roof, the less you can make an angle of inclination, which means less than the height of the skate. Any roofing has its own weight. Ceramic tile is much heavier than sheet material. In order to properly distribute the weight that the flooring is roofing and the walls, it is necessary to choose the right angle and the location of the skate. General rule It says that the harder it will be down, the sharper should be the angle.
Note! It is important to understand that with an increase in the corner of the roof, the area of \u200b\u200beach slope increases. This means that the material will leave more than for a roof with a smaller angle of the slope.
In construction, it is customary to designate the corner of the roof in degrees. There are other options, among which there is a percentage or fraction. Regarding the latter in the numerator, the height of the skate is indicated, and the digit is made in the denominator equal to half the span, which will be blocked. At the construction site is not accepted and incorrectly walk with a large transporter to select the desired angle. Typically applied designation in fractions. It is worth understanding that the installation of the spelling rafters is carried out on the ski run, which is installed. This means that the height of the skate is important to know before the process. This size is postponed on the working object is quite simple. It is enough to determine the middle of the wall on which the frontton will be mounted. At this point, a wooden or other plank is installed. With the help of a plumb or level, it is exhibited vertically. With the help of a roulette from the top of the Mauerlat, the height is postponed, on which there will be a horse.
Two main ways of calculation were developed:
Each of them may be simple in its own way, so they should be considered more.
To calculate the height of the skate beam with a mathematical method, it will be necessary to recall the course of school geometry. It is easier to carry out calculations if you present the design of the roof in the form of simple geometric figures. Most often, the bartal roof is a chain triangle. If he is height in it, then two rectangular triangles turn out. It is height and is the desired, since it will be a horse on its top. This height is a roll of a rectangular triangle, so you can use a simple formula for calculating it. Length of a smaller category will be equal to half the length of the wall on which the frontton will be installed. If it is in advance to determine the angle, the roofing rod, then you can use the Pythagora theorem to determine the length of the larger category or height.
For example, if it was determined that the roof angle for a house of 10 × 12 meters will be 30 °, then you can simply determine the height on which the horse will be located. For these purposes, we learn the length of the second category, dividing 10 to 2. By the Pythagore Theorem, this value is necessary to multiply on the tangent of the selected roof angle. The latter for 30 ° will be 0.577. If you multiply 5 to 0.577, then the result will be 2.885 meters. It is at such a height and the skating beam should be located. More about calculations can be found from the video below.
The accuracy of the graphic method will depend on the skills of a particular person to determine the size of the eye. To do this, the image of the roof is drawn in the form of an inaccessible triangle. It is important to observe the specified scale. The easiest to use paper sheet to the cage for these purposes. It will be necessary to draw a rectangular triangle. Half the length of the wall is also known for the roof angle. Cate is performed on scale, and the roof angle is deposited using the transport. After that, you can connect the resulting lines to the second catt and measure it with a ruler. After this, according to the scale, the translation is carried out into a real value.
Note! The graphic method does not provide the same accuracy as mathematical, so it is not recommended to use it for serious objects.
To calculate the height of the skate, a large number of online calculators are available, but they are all missing at the construction site. That is why it is important to be able to find a specific meaning, only using your knowledge. The article showed two methods as it can be done.
The height of the placement of cognac is determined by the static species, its technical characteristics and architectural specificity. It is very important when drawing up a project to accurately determine the correct proportions of the structures. To achieve the best results, it is worth it to figure out how to calculate the height of the roof - about this, in fact, it will be discussed in this article.
The channel is a rib of a double roof, located horizontally, which is formed where the peaks of inclined planes are connected. By making calculations of the height of the skate with overestimated or low indicators, it is possible not only to spoil the architectural picture, but also to create problems that in the future will affect the process of operation of the whole house.
To better understand what the ratio of the roof should be to the house, you need to present the roof in the form of an equilateral triangle. Such execution is the most common. There are, of course, the asymmetric bilateral roofs, whose Skalov area differ. But since often the slopes of opposite sides are equal, the height of the ridge of the two-sheet roof is determined by the standard way.
The equilateral triangle is divided into two equal parts. The line that comes from the vertex of the triangle to its base is the axis of symmetry, and in our case, the height of the skate.
The climatic factor is the variable that it is necessary to consider when designing the roof.
For atmospheric phenomena, which will affect the height of the roof include:
All this data can be obtained from the local meteorological service. Alternatively, they can be divided into literature in the literature on construction climatology SNiP 23-01-99 or on the available cards of the SP 20.13330.2011.
The calculation of the height of the roof will also depend on whether you are going to install an attic room. If you are going, the attic space from the house will be separated by the ceiling. The attic may be residential and non-residential. The design with a residential attic, as a rule, has a broken circuit in which the rafter system will consist of two tiers.
Determining how the height should be the lip of the roof in the case of the attic, you need to calculate two values: the height of the lower segment of the roof and the height of its vertex, which opens onto the lower tier. The lower tier, often has a height of 2.0-2.03 meters.
In addition, it is necessary to take into account the growth of the highest host of the house, adding 30-40 cm to this indicator, so that in the room it is convenient and safe to move. The size of the upper part of the broken roof can be beloved, they will be determined by individual owner preferences.
The height of the skate of the attic, which will not be intended for living, will depend on the rules of fire safety.
Another option of an invisible room - with space, combined with the main box. As a rule, its location is at one height with the ceiling of the previous floor. Attic attic attacks double schemeAt the same time, Mauerlat must be laid on the walls above 1.4 meters. In the case of half the mansard, the countdown of the skate is starting from the bottom face of Mauerlat.
Another factor affecting how to calculate the height of the ridge of a double roof is the type of roofing material used.
To select a suitable roofing cover, taking into account the height of the skate, you can use some rules:
Before calculating the height of the skate, keep in mind that the roof with a high skate will be somewhat more expensive. For example, for the roof with a bias of 45º, it is one and a half times more material than for a construction with a slope of at 7-10º, and for a roof with a slope of 60º, money will be required twice as many.
As a rule, the distance of suitable tilt nodes by manufacturers roofing materials Specified in the instructions. Such recommendations should be taken into account if you expect that your facility will serve as long as possible. Given the recommended bias, the width of the cornice compartments and the size of the house box, you can easily determine the height of the skate. Basically, the height of the roof relative to the width of the house has a less standard ratio. It is not less, other methods are used when planning the roofs.
To designate the angle of the skates, degrees are used, percentages or decimal fractions, including the height of the skate, and after the fraction - half of the overlapping span. The construction site is easier to use the third option. Significantly less often resorted to interest expressions, because the masters and homemade craftsmen are only confused.
Installation of rolling rafters is carried out on the already mounted skate run. This means that you need to know the height of the placement of the skate run in advance. If you know the height of the skate, you can not watch from time to time to the project. The measurement method is calculated by the center of the front wall. In this place, the vertical is fixed by a bar or helper. From the upper face of the Mauerlalat mounted on the wall of the Mauerlalat, the size we define are counted. It will be necessary to take into account at the time of the construction of the chalk system.
For the correct calculation of the height of the roof of the roof, as well as the height of the roof in relation to the height of the house it is chosen correctly, you can use one of the many calculators programs that can be easily found on the Internet. It is very simple to use them, the results of the calculations are obtained by fast and accurate.
The only minus is to check the finished results of calculations is not so easy without the possibility of a visual demonstration of the planned roof design. In addition, if you accidentally take an incorrect number in such a calculator, it will be possible to find an error only during construction. Therefore, it will be much better if you still check out all the figures and features of the design so that the minimum error in the future does not cost you significant unplanned costs.
In order to calculate the height of the roof of the roof as soon as possible, we will need trigonometry knowledge, as well as the ability to build buildings on the scale according to the scheme. You can use for this either a monitor or a simple paper sheet.
When using a mathematical method of calculations, you need to take the formula A \u003d B × TGα, where a is the height of the skate; b - flip of flight; TGα is a bias defined by the owner of the house on the basis of technical prescriptions and recommendations of the roofing material manufacturer.
The graphic method involves obtaining sizes when crossing the center of the roof and the line of the skate, going at a certain angle from the last point of the sink of the cornice.
It is worth noting that the listed methods can determine the lifting of the roof, but not all the height of the skate. These indicators are determined by the technology of mounting the upper parts of the rafter. When using hanging rafting systems, the height of the skate will be the same. The same applies to the sleeve systems, in the case when the top of the rafter goes beyond the line of the skate run.
When the rafting legs go beyond the limits of the run, then to the height of the roof, it is necessary to add 2/3 of the thickness of the board or timber applied during the construction of the solid system. It is worth considering that the depth of the dust makes the thickness of the material less than a third.
Calculate, as a rule, does not take into account the lattice laid on the rafter. Inevitable during the construction of the roof minor deviations that can reach 5-7 cm is normal because negative consequences does not lead.
Whatever the height one-storey house To the roof, it is possible to determine the height of the skate and the practical method. It is used in the calculations of North American carpenters, the work of which is focused on the construction of low-rise frame houses. However, the dramatically, this process is practically nothing varied with the works carried out by masters in other countries.
This method has technological feature: The mounting element of the lower heels of rafters to the base is carried out by the word. The rafters are based on the skateboard. If this condition is not compared to this condition at the stage of creating a scheme and obtaining calculations, the slope will become different, and this is better to avoid during the definition of the extreme parameter of the slope recommended by the manufacturer of the roofing material.
At the heart of the calculations, we again have an equilateral triangle, divided into two identical parts. We have a house width and a bias.
The sequence of determining the height of the skate will consist of such actions:
In other words, the height of the skate is the sum of the lifting of the roof and 2/3 of the thickness of the rafter. In the reality of ideal accuracy in any case you will not get. However, a minor error is considered to be neglected. Minor flaws are allowed for construction standards for structures of wood design, indicated in the collection of SP 64.13330.2011. The perfect miscalculation is characterized by considering physical processes on compression and crushing of wooden system elements.
