Scheme of a gable roof system

Pitched roofs are quite popular in private out-of-town construction, and therefore, many people are interested in the rafter system of a four-slope roof, which has some design features.

This type of roof is the preferred option for both a country cottage and a gazebo erected on the adjacent territory.

It should be noted that the four-pitched roof gives the building a rather attractive appearance, and also allows to get an additional mansard room of a large area.

The rope system of a four-slope roof has a complex device and its installation should be carried out only according to a preliminary calculation, the result of which should be a diagram.

Calculation of this roof, both for the house and for the gazebo, can be done by oneself, if you use a special program designed specifically for these purposes.

Its rafter system allows for several different options. To the four-slope roofs is a semi-valley roof, as well as a hipped roof, and each of them has its own specific features and differences.

Some types of these types of truss systems, which can be assembled by hand, are shown in the photo below.

Features and types of pyramidal type

roofing and construction of roof system in the roof is hipped type, above all, depends on theconfiguration.

Currently, the most common are hip, tent, and also half-hail construction of the truss system, which can be used for both a private house and a gazebo.

Each of them has both advantages and disadvantages.

In any case, the roof gable roof system assumes a calculation that is made depending on the type selected.

The hip type of the truss system is quite popular in private construction. Its design is quite resistant to various external influences and involves the installation and installation of skates of trapezoidal type.

As a rule, its installation is carried out with the help of several separate rafters, which come from the two top points. This type of rafter system can be used for the construction of a gazebo.

Variants of hip roof can be seen in the photo below.

Also quite common is the semi-high roof, the design of which resembles a gable one.

The advantage of this type of rafter system is the possibility to equip a vertical window in the area of ​​the upper attic.

Its device assumes no sharp protrusion, which allows it to withstand very strong wind loads.

In addition, in some cases, a half-hipped roof truss system makes it possible to equip a full glazing of the upper space.

The hipped roof also belongs to the four-pitch roof, however, for its arrangement, it is necessary that the structure of the walls be made in the form of a square.

The device of this type of roof implies the formation of a triangle with equal sides due to a specific design of skates. Very often a hipped roof is installed on the arbor.

Any of the types of this type of rafter system implies an accurate calculation, from which the installation itself is carried out.

Features of the

design The four-story roof, regardless of its type, necessarily has a frame, the design of which presupposes the presence of a sufficiently large number of very different elements.

Each of them has a specific purpose and must meet its functional requirements.

In order for such a roof to withstand all possible loads during its operation, it is necessary to accurately calculate the capabilities of each of its constituent elements.

Such a calculation is a fairly complex calculation, which can not always be done manually.

It is best to entrust the calculation of a gable roof to qualified professionals who have professional training.

You can calculate yourself, but for this you need to use a special program.

It's easiest to make such a calculation for a gazebo, since its design is simpler in shape and involves the use of fewer elements.

When calculating the roof frame, it is important not to allow critical errors, as this can lead to serious consequences in its subsequent operation.

In the event that mistakes are made, their correction can lead to serious monetary investments and rise in the cost of the entire construction.

First of all, making the calculation of the roof skeleton, it is important to determine the angle of inclination of its skates. Calculations show that the higher the angle of inclination, the more building materials will be required.

Also, when calculating the roof, it is necessary to take into account the fact that the lower the angle of its inclination, the more powerful the structure of the carcass itself should be.

Video:

Correctly made calculation will make the rafter system more qualitative and powerful.

Semi-hipped, hip or hipped roof of the four-slope type are shown in the photo above.

Types and features of

rafters. The device of any type of skeleton of a four-slope type of roofing can differ not only with a bay window, but also with the presence of certain constituent elements.

So, its installation implies the arrangement of the mauerlat, the run, and also the support board. In addition, the structure of the roof frame should include puffs, narodniki, and directly, the rafters themselves.

Installation of a four-pitched roof requires the arrangement of a crate, as well as some other mandatory elements.

It is a bit simpler for the roof frame at the gazebo and it is connected, first of all, with its design features. The installation of the gable roof is shown in the video below.

In any case, in order to make the installation of the roof frame of the house or gazebo, you need to develop a plan for the rafter system and do it as precisely as possible.

Both the half-valley and some other four-slope roofs consist directly of the frame and the roof truss system, on which the roofing cake will later be based.

An important factor in the arrangement of this type of roof with their own hands is the uniform distribution of the assumed load over the entire surface of its structure and further to the walls and directly to the foundation of the structure.

To achieve this, not only the correct design of the roof frame, but also its installation. For this, rafters of various types can be used.

Their choice mainly depends on the size of the house being built. In addition, the presence of internal walls of a bearing type or additional supports is taken into account.

In any case, the installation of the roof can be carried out using hanging or layered rafters, as detailed in the video below.

Video:

rafter system designs Hanging rafters are often used. This type of construction involves the arrangement of two independent supports, which do not imply any intermediate support.

These rafter systems work for both bending and compression. Also, the suspended type of construction of the rafter system creates a horizontal force, which is accordingly transmitted to all bearing walls.

To reduce this type of load can be through the use of special puffs, which are bridges made of wood or metal, connecting all the wooden legs.

When erecting an attic or attic roof, these puffs are installed at the base of the feet. If such a tightening is fastened above the base of the rafters, then its main function is only fixing.

It should be noted that the higher this tightening is established, the stronger all the components of the rafter structure should be.

In those buildings in which a medium bearing wall is provided, or in addition, special supports are installed, as a rule, a rafters system is set up, which provides for the arrangement of layered rafters.

Such lining rafters with their lower parts rest directly on the Mauerlat, which must be laid over the entire surface of the exterior walls of the house. In addition, in such a rafter system, the middle part is further strengthened in the middle part of the house.

The construction of the saddle type rafters works on bending and has less weight than hanging rafters, which means that fewer building materials are used for its construction.

In addition, the rafter system, which is made using layered rafters, has a higher strength, and accordingly, rigidity.

Some mounting features of the

Any four-pitch roof, even if the device is designed for a gazebo, assumes a complex design, although they can be equipped with a bay window of various shapes.

At the base of these types of roofs is a triangle, which determines their high rigidity and stability.

The main elements of this roof, which bear the main burden, are the rafters, whose design and installation should be given special attention.

When installing such a roof with your own hands, it is recommended to follow the rules and technology of construction with the utmost precision.

In addition, only high-quality building materials with the required strength and reliability should be used.

When building a four-pitch roof, special attention should be paid to all its angular elements, which experience the maximum number of loads.

If necessary, to make splices of some elements of the frame, they should be further strengthened with appropriate racks and struts, which make it possible to reduce the overall load.

In general, the four-pitched roof is a complex element in the constructive plan of the house, which must be made in accordance with all requirements.

Video: