How to calculate the angle of inclination of the roof - the basis for calculating and selecting the material

Many owners of suburban real estate say that the roof of his own home should be not only reliable, but also beautiful. It is possible to achieve maximum functionality and the beautiful appearance of the design under consideration with the correct selection of materials, as well as the calculation of the desired slope. In our article we describe how to calculate the angle of inclination of the roof. To do this, it is necessary to own data about the wind and snow load, the construction site and the properties of the coating.

Before determining the angle of inclination of the roof in degrees, you need to know for what purposes the attic will be used. If this part of the house is a residential tilt, you need to do the maximum, which will allow you to increase the height of the ceilings and make the rooms are spacious. The second option of the exit from the current situation will be a device of a mallandoic roof. In most cases, this design makes a bounce, but some may have four slides. Here you need to thoroughly calculate everything, because with an increase in the height of the skate increases the useful scope of the attic. At the same time, the coverage area and financial investments on the roofing device increases.

With an increase in the height of the skate, financial investments on the materials used to cover are increasing;
The wind is stronger than the wind with a significant area. If you take two buildings with the same overall dimensions, but having a different angle of inclination in degrees (for example, 11 and 45), the load from the same wind streams on the second house will be almost 5 times higher.
If you do not know how to find an angle of inclination, take it large from 60 degrees. Atmospheric precipitation and snow are not delayed on such roofs.
Not every product for the roof can be used on the corner of the slope. At the angle of inclination implies the ratio of the height of the row to half the width of the house.

The roofs with a small slope angle have a reduced area compared to cool roofs, they are much cheaper, but when installing such a coating, you also need to consider certain nuances:

Device of special snow-holders to prevent avalanche gathering. One of the options for removal of snow masses is a special heating device to accelerate the melting of snow.
With minor coating height differences, there is a high probability of moisture penetration into the roof design through the joints. So that the roof has not allowed to flow, it is necessary to use enhanced waterproofing.

As you can understand, structures with a small bias have more deficiencies than positive qualities. In this regard, each builder should know how to determine the angle of inclination of the roof in degrees.

How the magnitude of the slope depends on the material used

Roofing of a country house or master building can have low or sheer rocks. During the design of this design, it is necessary to calculate the cross section of the rafted and the distance between them. How to determine the angle of inclination for different roofing materials, they are trying to understand many, but these values \u200b\u200bhave long been calculated.

During the installation of rolled waterproofing materials, when the runneroid is placed in two layers, the slope of the coating should not exceed 15 degrees. Many would like to know how to determine the angle of inclination of the roof in degrees if it is covered with three layers of flexible tile. In this case, the described indicator may vary from 2 to 5 degrees.

Pay attention to the following nuances of the device:

The installed runner is recommended for use with a magnitude of the slope to 25˚ in two layers, from 0 to 10˚ - in three layers. If there is a roof with a bias of 10 ... 25 degrees, one layer of rolled materials can be laid, but the facial surface of such a coating should have a special protective layer.
Asbestos-cement sheets are used on roofing bias up to 26˚.
The minimum bias for natural tiles is 33 degrees;
Professional sheet or metal tile - 29 degrees and more.

Roofing consumption also depends on the parameter under consideration. So designs with small slots cost much cheaper analogs that have an angle of more than 45 degrees.

What affects the slope

All roofs used can have a different shape and number of skates. For example, in garages or other shopping buildings there may be only one skate, the sheds of such planes two, but the roof of civil buildings consist of two or four skates. How to determine the angle of inclination of the roof in degrees is perplexed by many builders. According to experts, such calculations can be carried out using special matrices or graphs. In addition, it is possible to know the angle of inclination of the roof from the course of geometry with a triangle. Most often, the described structural element resembles exactly this figure.

At the roof design stage, you need to choose the necessary products and carry out the necessary calculations. It is noted that the type of coating is taken into account when calculating the angle of any scope design. If the host does not know how to calculate the slope correctly, this value is within 9-20 degrees. When designing the roof of the building, consider the following nuances:

purpose of construction;
the material from which the coating was made;
climatic features of the construction region.

If you plan to install the roof with two or more skates, you need to pay attention not only to the listed requirements, but also to the construction area. It is also necessary to take into account the purpose of the attic room. If the attic to be used to store unnecessary things, then it makes no sense to make it high and increase the flow of roofing material. When using a residential attic room, it is necessary to choose rafters with a maximum cross section and place them at a short distance from each other.

The dependence of the corner from the site of construction

In regions with permanent strong winds, it is necessary to make a bias minimal. In this regard, the load from the flow of air on the roof will be small. High roofs suffer from wind much more than low. It is impossible to say that the wind does not break off the coating with the roofs having a small slope. Next, we learn how to find an angle of inclination of the roof for buildings built in regions with constant winds:

With a small intensity of air flow, the slope is 34-40 degrees;
If there are strong winds, this indicator is reduced to 15 ... 25 degrees.

In the area with a large number of atmospheric precipitation, the tilt is advisable to increase to parameters of 60˚. Such a bias will allow you to quickly remove snow and water beyond the coverage. The bias of the roof usually change in the range of 9 ... 60˚, but the most common slope variants are considered the range of 19 ... 44 degrees.

Example of calculation

And now you will get acquainted how to calculate the angle of inclination of the roof on a specific example. First you need to find out the height of the skate in relation to the base. This parameter depends on the purpose of the attic. If this room will be used as an attic, then we will need another value - the length of the front or base.

How to measure the angle of inclination if the height from the base of the roof is 1.8 meters, and the length of the front is taken in multiple 6 meters. To begin with, it is necessary to divide the "triangle sole" into two parts, and then calculate the sinus angle by the Pythagora theorem.

In our case, this is the value of the corner sinus, which is from the ratio of the adjacent side to the opposite. First divide the triangle into two equal parts 6/2 \u003d 3. Now we calculate the sinus of the desired angle of 3/18 \u003d 1.6. We look into the brady's table and see that this value corresponds to the corner of 59 degrees.