Choosing the angle of inclination of the extension, you should pay attention to the following points:
- the greater the angle of inclination of the rafters, the less risk of accumulation of rainwater or snow mass, “moved” from the main roof;
- rafters of the extension located on the south side may have a smaller inclination than that of a similar structure on the north side, since the sun contributes to the intense evaporation of moisture.
Rafters made of wood for single-pitch roofs are sensitive to moisture. The junction of the rafter legs to the wall or the main roof should be carefully sealed – for this purpose, the installation of a roofing apron.
Thematic video allows you to learn how to properly mount nodes in the construction of a shed roof.
How to make a shed roof
If you want to build an extraordinary, unlike the neighboring house, take a look at the houses under the lean-to roof. It gives the building originality. In addition, a shed roof is the simplest in the device. So simple that you can do it yourself.
Advantages and disadvantages
Shed roofs are considered the most inexpensive and simple in the device. And this is true, especially with a small width of the building. However, in our country, houses with single-roofed roofs are quite rare. For the most part, this is due to the fact that pitched roofs are more familiar to us of two or four – they look more familiar. The second snag is to find a project adapted to our weather conditions. There are a lot of projects on western resources, but they are designed for a milder climate, as a rule, have a large glazing area. Find an architect who will competently change the project you like very difficult. But if you still managed, and the harmony of the building was not disturbed, the house turns out to be very original.
One of the projects of houses with a shed roof
Many are afraid of uneven ceilings in some part of the building. Of course, they are harder to beat than the standard ones, but the result is a completely different level – the original one is 100%. True, and this time to find a designer who can develop a similar interior in the vast spaces of our Motherland is very difficult, however, it is possible.
There is one more way – to level the ceilings due to the overlap, and to use the free space under the roof as technical rooms. Implemented and such options and the owners are very satisfied. Yes, technical rooms on the ground floor, and upstairs, but no problems with groundwater.
These are, perhaps, all the disadvantages or pitfalls that a shed roof can bring. There is, however, another point that can hardly be called a disadvantage. Because of the particular structure, the roofing material on such houses is not visible from the ground. If the terrain is flat, without large differences in height, it makes no sense to bother with the appearance of the roof. It is better to choose simple-looking, but high-quality materials, quiet (the plane is large, it makes a lot of noise when it rains) and reliable. One of the most popular options is a folded roof. It provides a due degree of tightness, not very noisy. Another option is a soft build-up roof of modern materials. Such roofs are even quieter, and modern materials can be used for 20-30 years without repair.
Shed roof device
Organize the desired slope of the single-pitch roof due to the height difference of the opposite walls. One wall of the building turns out much higher than the other. This leads to an increased consumption of materials for the walls, but the roof system is very simple, especially for buildings of small width.
With sufficient wall bearing capacity, the shed roof system of the shed roof rests on the power plate fixed to the wall. In order to distribute the load more evenly, the upper row of the wall masonry is reinforced with longitudinal reinforcement (for brick walls, from concrete blocks) or armopoyas (for walls made of light concrete, limestone, shell rock) are poured over the last row. In the case of a wooden or frame structure, the role of a mauerlat is usually performed by the last crown or top trim.
With insufficient strength of the building material walls, most of the load can be transferred to the overlap. To do this, install the rack (step – about 1 meter), which fit the girders – long bars running along the building. Then rafter legs also lean against them.
How to transfer the load from the walls to the floor
When casting the armored belt or laying the last row, studs are installed into it, in 80-100 cm increments, with which they then attach the power plate to the walls of the building. In wooden houses, if you do not make an armopoyas, laying studs is impossible. In this case, installation on hexagonal head pins is allowed. Under the pin, a hole is drilled through the mauerlat, a couple of millimeters smaller than the diameter of the pin. It is hammered with a metal rod, which attracts a wooden beam to the wall. The connection is tightened with a hex key of the required size.
Single Shed Roof System
Such roofs are especially popular in the construction of courtyards – sheds, garages. Just the size of the buildings allow the use of not very powerful beams, and the beams are required in small quantities. With the width of the building up to 6 meters, the rafter system of the single-shed roof contains almost no additional reinforcing elements (supports and girders), which is advantageous. Also attracted by the lack of complex nodes.
For Central Russia for beams of up to 5.5 meters, beams of 50–150 mm are taken, up to 4 meters, 50–100 mm is enough, although in an amicable way, snow and wind loads should be considered specifically in your region, and, based on this, be determined with the parameters of the beams.
Rafter system of a single-pitch roof with a small span (up to 6 meters)
When the distance between the walls is up to 4.5 meters, the single-pitch roof consists of two bars of the mauerlat fixed to the walls and rafter legs that rest on the mauerlat. Really very simple construction.
With a span width from 4.5 meters to 6 meters, it is also necessary to lie down, fixed on a higher wall at the level of the ceiling and subrafter leg, which rests against the beam almost in the middle. The angle of inclination of this beam depends on the distance between the walls and the level of installation of the floor.
More complex roof systems in a shed roof with a building width of more than 6 meters. In this case, it is optimal if the house is designed in such a way that inside there is also a load-bearing wall on which the stands rest. With the width of the house up to 12 meters, the farm is still simple, the cost of installing the roof is minimal.
The device farms shed roofs with a width of buildings more than 6 meters
For buildings with a width of more than 12 meters, the system becomes more complicated – there are more subrafter legs. In addition, the manufacture of beams with a length of more than 6 meters is expensive. If an increase is only required by the width of the overhangs of the roof, the beams will grow along the edges of the filly. These pieces of beams of the same section, connected to the beam and secured on the sides with two wooden plates of at least 60 cm in length, fastened with bolts or nails, allow the use of mounting plates.
Option splicing rafters
If the total length of the beam is more than 8 meters, they are usually spliced. The joints are additionally reinforced by nailing boards or mounting plates.
Attachments of rafters to the Mauerlat: sliding glory at the top and hard at the top right. Bottom right option without tie-in overhangs (very rarely used)
There may still be questions about how to mount the rafters of shed roofs to the mauerlat. There are no fundamental differences. All also in the truss leg make a cut, which the bar rests against the power plate. In order not to suffer with each rafter leg, aligning its landing, having cut the first one, a pattern is made from a piece of board, thick plywood or timber, which repeats the resulting “drank”. All subsequent rafters gash before installation. A template is applied to them in the right place, a notch of the required shape and size is cut out and cut out.
It was a question of rigid fastening of rafter legs to a mauerlat. It is used on all buildings that shrink a little. This method of fastening cannot be used on wooden houses – the house is constantly sinking or rising a little, which may cause a distortion. If the roof is fixed rigidly, it can break. Therefore, when constructing a shed or any other roof on wooden houses, use a sliding connection between the rafters and the power plate. To do this, there are so-called “slip.” These are plates, a condition from corners which fasten to a mauerlat and movably connected metal strips which fasten to a rafter foot. There are two such slippers on each rafter.
Choosing the angle of the roof
The angle of the roof slope is determined by the combination of indicators – wind and snow loads and the type of roofing material. First, they are determined with an angle according to climatic conditions (depending on the amount of precipitation and wind loads). After looking at the minimum recommended slope for the selected type of roofing material (in the table below).
Name of roofing material
Minimum tilt angle (in degrees)
If the desired angle is larger, everything is fine; if it is smaller (which is very rare), increase it to the recommended one. Doing a roof with an angle smaller than the minimum angle recommended by the manufacturer of the roofing should not be definitely – it will flow at the joints. To make it easier to navigate, for example, for Central Russia, the recommended slope of a lean-to roof is 20 °. But it is desirable to count the figure for each region, and even for a different location of the building on the site.
By the way, keep in mind that different manufacturers of the same type of roofing material may require different minimum slope. For example, the laying of metal of the same brand can be done on the roof with a minimum slope of 14 °, the other – at 16 °. And this is despite the fact that GOST determines the minimum slope of 6 °.
It is also worth remembering that when the slope is up to 12 °, in order to ensure the tightness of any roofing material, it is necessary to coat all the material joints with a liquid waterproofing compound (usually with bitumen mastic, less often with roofing sealant).
Determine the height at which you want to raise the wall
To ensure the found inclination angle of the single-pitch roof, it is necessary to raise one of the walls higher. How much higher we learn, recalling the formula for calculating a right triangle. By them we find the length of the truss legs.
How to calculate the parameters shed roof
When calculating, do not forget that the length is obtained without taking into account the overhangs, and they are needed to protect the walls of the house from precipitation. The minimum overhang is 20 cm. But with such a small ledge outside the building, a lean-to roof looks like a curved tail. Therefore, overhangs of at least 60 cm are usually made on one-story buildings. On double-decker, they can be up to 120 cm. In this case, the width of the overhang is determined on the basis of aesthetic considerations – the roof should look harmonious.
ScratchUp drawing example
The easiest way to determine how much it is necessary to extend the roof in design programs that allow you to draw a building on a scale and “play around” with the overhangs. Everything should be displayed in 3 dimensions (the most popular program is ScratchUp). Twist in it different sizes of overhangs, decide which one looks better (this is if there is no project), and then order / make rafters.
Photos from the construction site: single-pitch roof on a house of aerated concrete
Built a house in St. Petersburg. There was no project, there was a general idea, which is presented in the photo. The house of aerated concrete, finishing finish – plaster, roof – folded selected on the basis of cheapness, reliability, ease of installation.
The idea of a house under a shed roof
After the walls were thrown out, armored belts were poured into them, into which studs (Ø 10 mm) were installed every meter. When the concrete in the armored belt reached the required depravity, a layer of waterproofing was laid on the bitumen mastic (“Gidroizol”, cut along the strips of the desired width). Mauerlat is laid on top of the waterproofing – timber 150-150 mm. All sawn timber, which are used for roofing, is dry, treated with protective impregnations, fire retardants.
Begin installation of shed roof – installation of a power plate
He is first put in place (lying on the heels, held by assistants), pass along, hammering at the places where the studs are. In a bar, the places where the studs stick are printed. Now they drill holes and just put it on the studs.
Since the span is large, there are supports made of timber (150-150 mm), on which a girder is laid, which will support the rafter legs.
Install racks and run
The width of the roof is 12 meters. This is taking into account the removal of 1.2 meters from the front. Therefore, the Mauerlat bars and the girder “stick out” beyond the walls precisely at such a distance.
To ensure the removal of the roof the Mauerlat and the girder stick out the limits of the wall
At first there were doubts about such a large takeaway – the rightmost beam hangs 2.2 meters. If this removal is reduced, the walls will be bad, and the appearance will deteriorate. Because everything decided to leave as is.
Rafters from two spliced boards of 200 * 50 mm, with a step of 580 mm keep within. Boards are knocked down by nails, in a checkerboard pattern (top-bottom), with a pitch of 200-250 mm. Heads of nails, then right, then left, pairwise Two, top / bottom right, two top / bottom left, etc.). The splices of the boards are separated by less than 60 cm. The resulting beam is much more reliable than a similar solid timber.
Method of mounting rafters
Next, a shed roof pie for this case is (from the attic side – to the street): vapor barrier, stone wool 200 mm, ventzazor (lathing, counter-lathing), moisture insulation, roofing material. In this case, it is a dark gray pural.
An example of a roofing pie for a single-pitch roof (it’s actually standard)
We will carry out the insulation from the inside later, but for the time being we lay down the hydro-wind-protective membrane “Tyvek Solid” (vapor-permeable) over the rafters.
We install waterproofing windproof vapor-permeable membrane
The membrane keeps within from below-up, fastens brackets from the stapler. The canvas, which rolls higher, comes to the already laid by 15-20 cm. The joint is glued with double-sided tape (bought with the membrane). Then a strap is stuffed over the membrane, on them is a crate under the fold roof.
Crate from board 25 * 150 mm
First, the crate is made of board 25 * 150 mm in increments of 150 mm. After laying, walking on the roof, it was decided to strengthen the crate. To do this, between the already laid boards we fill boards 100 mm wide. Now there is a gap of 25 mm between the boards.
Lathing a shed roof as a result
Further on the bottom pediment hooks were installed for installation of the drainage system. They are unevenly hammered, because of the great length of the gable, it was decided to make two receiving funnels at a distance of 2.8 meters from the edge. To ensure the flow in two directions and made such a relief.
Filled hooks for drainage system
Next, you need to bring pieces of metal (paintings) with a length of 12 meters. They are not heavy, but they can not bend, because the “slide” disappears. A temporary “bridge” connecting the ground and the roof is built for the ascent. On it and raised the sheets.
Lifting sheets on the bridge
Next come the roofing work, which differs depending on the type of roofing material. In this case, it was necessary to solve the problem of thermal expansion of the material – galvanized steel (Pural) when heated / cooled significantly changes its size. To ensure the freedom of expansion, it is decided to fasten the material to the crate over the fold with movable cleats with the freedom of movement of 15-20 mm.
Installation of klyammera for a faltsevy roof
Laying a folded roof from Pural
After laying the roofing material remains filing eaves, but they are no different.
The roof should be brought to the “mind” – hem overhangs, but, basically, it is already ready
Well, the photo below is what happened after the finish. Very modern, stylish and unusual.
House with a lean-to roof – almost finished
Projects and photos of houses with single-sided roof
As already said, it is difficult to find interesting projects of houses with a lean-to roof. While these buildings are unpopular with us. Perhaps, just because of its originality. This section contains several projects or photos of already built houses. Maybe someone will be useful at least as an idea.
Project of a small house under a single-pitch roof
This house exists. especially sloping roofs in areas with elevation changes
One-story house with a lean-to roof of a large area
Two-storey house with terraces on two floors
Under the natural tile requires a large angle of the roof
Large windows – beautiful, but irrational in our climate
Split-level house – an interesting implemented project
This is the prototype of the one above.
The original house. Under one lean-to roof and a house and households, and even part – a canopy over the courtyard between two buildings
Same project as above, on the other hand
Two leaning roofs at different levels
Rafter roof system: the rules of the device and the analysis of standard options
Shed roof quite reasonably attributed to the category of the most simple and economical structures. It attracts with minimal material consumption and uncomplicated construction process. The construction of a single-pitch option can be the first confident step on the path of an independent roofer. However, without compliance with the technological requirements of a positive outcome will not be even in the elementary case. In order for the result to be pleasing with reliability, you need to know what the rafter roof system of a shed roof represents and what requirements must be taken into account when constructing it.
Shed roofs – a faithful companion of domestic structures, terraces, garages, attached and detached verandas. Above residential buildings in the vastness of the fatherland, they are being erected extremely rarely so far, although the number of adherents of modern and high-tech styles is touched by a tendency to increase.
Despite belonging to the pitched category, one-sided roofs can not be unconditionally called attic: the space under the roof is too small to organize a room. And since it does not make sense to use the attic, it is not always advisable to separate it by overlapping it from the building. Therefore, in practice, builders of shed roofs often install struts and subrafter legs instead of overlap.
Simplistically, the truss frame of a single-pitch roof can be called an overlapping or half-laid naklonnoy system, which is much closer to the constructive essence. It is constructed solely from the naked rafter legs, i.e. from rafter, having reliable support for the top and lower heels.
Among the options for supporting the rafters of single-pitch roofs are:
- Two bearing brick, concrete, wooden walls of different heights. In this case, the rafters of the single-pitch roof rest on the walls through the mauerlat, which is laid in two strips unrelated to each other. The support can be made through a reinforced concrete belt, previously designed and arranged during the construction of the walls, as well as through the upper rows of timber or log boxes.
- One bearing wall of concrete, wood, bricks and located opposite the support. It is clear that in this way extensions and awnings are constructed. The upper edges of the rafters in such cases rely on steel brackets screwed to the supporting wall or on the sockets selected in it. The lower heels rest on the harness that connects the support posts.
- Two rows of concrete, brick, wooden supports. Both heels rafter based on the harness. Moreover, the supports can simultaneously serve as elements for fastening the casing and forming the frame walls.
In private construction, single-leaning constructions are most often used if the span covered by them does not exceed 4.5 m. The overlap of a more serious passage is quite realistic: for its implementation, it will be necessary to simply strengthen the system with purlins, supports, and struts.
However, among private owners there are few lovers of such large-scale single-pitch roofs, therefore we will consider the simplest representatives and the principles of their construction. Having dealt with their design, you can create your own project by upgrading and making additions.
Properly designed project takes into account the need to have a single slope on the windward side, so that the roof is not torn off and carried away by the gusty wind.
For the manufacture of naslon rafters use wood and lumber of the 2nd grade. Fitted logs will fit, the plates are the same logs, but hewn on both sides. Used timber and pairwise stitched boards.
The cross section of the rafter legs for the construction of shed roofs over buildings must be calculated taking into account the weight of the roof, snow and wind load. The listed values among the folk artists simply add up and enter into one of the many calculation programs, of which there are a little less on the Internet than the Legion. In order not to suffer with calculations, we present the average cross-section of rafter legs and related elements used for the construction of single-pitch roofs in the middle lane, this:
- The logs and the Ø 180-200mm plates hewn out of them, the beam 100 × 150mm (150 × 150mm) are used for the construction of the rafter frame, which covers a span of 4.5m or more.
- Logs and plates Ø 120-180mm, timber 100 × 100mm are used, if you need to cover the span to 4.5 m.
Timber in both cases is permissible to replace in pairs with a stitched board, the dimensions of which in the end will make it possible to obtain a beam of the required section.
It should be remembered that the log Ø is less than 120mm, plates with a thickness of less than 70mm and boards with a section of 40 × 150mm less are not used in the construction of truss structures. Even for low-responsible canopies, arranged on sites in the middle lane, the indicated dimensions are minimum.
Mauerlat in the middle lane is recommended to arrange from a bar with a side of 180-200mm. The struts of the large-span roofs should be made of 80 × 80mm bar, logs Ø 100mm, and 25 × 150mm of stitched boards.
If the scheme of the roof system of a single-pitch roof predetermines the run device, it is installed parallel to the ramps. It is needed to increase the rigidity of the structure as an additional support system. To fix the girder, mount the supports and the deck in the same way as dictated by the technology of the construction of two-sided roofs. Only the goal is not to form a ridge fracture, but to maintain the plane of a large stingray. Runs of large-span structures are made of 180 × 180 mm timber or Ø 200-260 mm logs. For the manufacture of racks for girders take a bar with a side of 120mm or a log 130-200mm in diameter.
The step of installation of rafter legs is defined according to geometrical data of the set up box. The slopes, on which the rafters are to be supported, are divided into equal sections so that the distance between the rafters is the same. Breakdown of the slopes for their installation is carried out, taking into account the size and type of materials used:
- For rafter legs made of timber, log plates, installation step from 1.5 m to 2 m.
- If the rafters are made of a twin board, the installation step is from 1m to 1.75m.
- For rafter from a single board the installation step is from 0.6m to 1.2m.
The choice of pitch installation truss feet insulated roof structure affects the size of insulation. It is very convenient if the heat insulation plates are installed between the rafters rigidly, with slight squeezing. This is a very economical solution, because it is not necessary to stack them in two layers, and heat losses are excluded, due to the elimination of the causes of the formation of cold bridges.
Do not forget that when you increase the recommended distance between the rafters, you will have to reduce the installation step of the batten or even make it solid. Such a choice is not always advisable in terms of both labor and construction costs. It is better to adhere to technological recommendations and to calculate in advance what is more profitable: install less one or two rafters or reinforce the lining of skates.
As is customary in the construction of pitched roofs, rafters are fastened to crutches hammered into a wooden wall or traffic jams with anchors embedded in brickwork. Fixation is made through one truss foot twisted from annealed wire. The attachment points for rafter legs to the walls are located below the Mauerlat by 20-30cm. Wire twist can be laid during the laying of bricks. It is allowed to fasten to walls from a bar or a log brackets.
In order for information to be better assimilated, let us examine several common examples of the device of roof systems for single-pitch roofs. Consider simple construction objects, the construction of which will be able to cope masterovita host.
Let us examine the device of the rafter frame of the lean-to roof above the garage, the walls of which are made of foam concrete blocks. The reinforced belt recommended by the standards was not flooded, which is why the procedure for laying the Mauerlat is coming. In shed roof structures it is constructed in the form of two bars laid on walls of different height.
The process of building truss system in stages:
- Flush with the inner planes of the high and low walls are laid timber 100 × 150mm. This is a single sloped roof mauerlat. Sincethe timber will be in contact with the foam concrete; it is laid on a ruberoid or similar waterproofing gasket. Fasten the beam through about 80cm roofing corners 90 × 90, reinforced cast lintel. Screw the corners with dowels Ø 14mm.
- From the board section of 50 × 200mm make the template rafters. Install it on the power plate so that there is a stock of about 55-60 cm on both sides. The stock should be slightly larger than the planned width of the eaves. Usually it is 40-50cm. Surplus after installation of all rafters cut off.
- We note the points of future cut-offs on the set blank, not forgetting that the depth of the cut should be no more than 1/3 of the width of the board.
- We mark the walls so that the outer rafters do not touch the concrete wall on both sides. It is desirable that there is a distance of 4-5 cm between wood and concrete.
- We make truss legs according to the template, install them and fasten them to the power plate with brackets or corners.
- From trimming the board we make a fillies pattern taking into account the width of the overhang. On a template we make all eaves elements. Then we mount, without forgetting about waterproofing laying between wooden details and a concrete wall.
- Cutting off the rafters and nailed around the perimeter of the wind board section of 25 × 100mm.
Elementary truss construction for the garage is ready. It remains to fill the crate under the rafters installed under the shed roof. It can be solid or sparse. The spacing of the installation of diluted laths depends on the type of roofing material.
The eaves overhangs in the first example we formed by mounting the fillies. There is a slightly different way that the Mauerlat beams are installed with the box perimeter removed. Carrying out is equal to the width of the eaves overhang. Rafters are positioned so that the extreme elements are just above the edges of the power plate. In the space between the extreme and the adjacent rafter mounted short takeaways. Further, all according to the standard plan.
No less often than the previous example, the task of building an extension to an existing building arises. For good reasons, the roof will be shed. It will perfectly fit into any architectural and landscape conditions, besides, it will not create a threat of accumulation of precipitation.
Built truss system at an angle of 20 º, because metal tile will be mounted on top of it. The rafters will be supported on the capital and opposite extension brick wall. In the example of the one-way construction proposed by us, the span of 4.75m should be blocked, this is more than 3.5m. Hence, to ensure the rigidity will require the installation of struts. Design and installation of struts made with the condition that the angle of inclination is not desirable to exceed 45º.
Section board for the manufacture of truss legs 50 × 200mm. They will be installed through 70cm. The boards will be made of 50 × 150mm board, and for the construction of the batten we will stock up on a board 25 × 100mm.
Algorithm of construction of a single-sided truss frame:
- We install the timber 100 × 150mm flush with the inner plane of the extension wall, not forgetting to make waterproofing in advance. Fix the timber with bolts through 80-100mm.
- In the capital wall at the planned height, we will hollow out the grooves for the installation of the upper heels of rafters. The depth of the grooves is 12cm, the width is slightly larger than the thickness of the board, the pitch is 70cm. Instead of slotted grooves, you can use metal brackets that are simply screwed to the wall. In form, they resemble an inverted letter “P”, in which the upper edge of the rafter is placed.
- Let’s make a template of rafter legs. We put the board 50 × 200mm to the place intended for it and mark the gash from both edges. The depth of the top gash needed to install the rafters in the groove, 10cm. It is not necessary to do deeper, otherwise rafters will rest against the wall, and this is undesirable. The size of the top gash is transferred to the bottom. At the same time note the vertical line cut along the width of the eaves.
- Using the template, we make all the rafter legs and install them on the proper places. For mounting at the top we use metal corners, one side of which is screwed to the wall, the second to the rafter. At the bottom, fix the corners or brackets.
- We are trying on a piece of board to the main wall and one of the truss legs to determine the point of cutting the groove under the strut. Do not forget that the angle between the wall and the strut should not exceed 45º, and the lower heel of the strut should rest against the wall 20-30 cm below the opposite wall.
- Stepping back from an imaginary vertical, drawn through the upper groove, 5-6 cm in any direction, we hollow the lower row of grooves. We place them every 70cm.
- We cut the bottom corner from the strut workpiece so that the line of the saw cut is 10 cm.
- We try on the workpiece, setting the edge with a gash in the lower groove. In the line of intersection of the truss foot and the billet we draw the upper gash.
- According to the verified scheme we make and install all the struts. Fasten them to the rafters with metal toothed plates.
- We form cornices by installing fillies on the sloping walls of the extension. Do not forget about the mandatory waterproofing between a brick or concrete wall and made of wood roof elements.
- We sheathe the perimeter of the wind board and mount the crate.
The technology cited as an example is valid not only for installation of single-pitch roofs over capital outbuildings. In a similar way, they arrange covered verandas with terraces, economic blocks.
Work is much more fun if the walls of the main building are stacked with a bar, log or made using the Canadian framework method. Under the upper heels of the rafters corbels install brackets: less hassle and the process moves much faster.
Shed roof – an excellent option for the arrangement of outbuildings, temporary shelters, summer kitchens. In the fundamental nature of such structures rare units need. More actively demand the simplest options, the construction of which is easily handled by the owner of the suburban area.
Consider the device shed roof over a small barn for the storage of dacha inventory. Its walls are built on the frame-greenhouse principle by installing vertical racks connected at the bottom along the perimeter strapping. The front and rear walls of the shed differ in height, therefore they are connected not by a single strapping, but by separate transverse strips.
The cross-bar of the high wall is laid at an angle, which makes it possible not to make cuts for supporting the upper heels of rafters. To form an angle, racks of high wall are filmed on top under the projected angle.
The device algorithm trussing system is typical. First, a piece of board is applied to the end of the building and draws lines of gash. Then the required number of rafter legs is washed down according to the template. They are installed in the traditional way according to the markings made in advance on the walls. For fastening the elements of the truss system over light household buildings, nails or screws are enough. Screw or hammer hardware products at an angle, making sure that there are no gaps between the parts to be joined.
Fastening wind board is performed around the perimeter after the installation of wall cladding. The example barn has no overhangs. However, if you wish, you can make them by installing rafters length, taking into account the formation of overhangs. Planned laying of the soft roof, under which arrange a continuous crate. The dimensions of the lathing of plywood, GFBL, board or OSP-3 determines the external plane of the wind board.
The angle of inclination is small, so the use of waterproofing is highly desirable, even if wetting of the items stored in the barn does not bother you too much. Waterproofing will protect the wooden parts of the building from rotting and subsequent inevitable failure.
Visually with the process of building a truss system for a shed roof will introduce the video:
We reviewed the most typical examples, relevant and available for handwritten execution. Described in detail the technological nuances of typical situations. These are basic options that can easily become the basis for their own development. Dimensions are changing due to individual needs, but the principles of construction of roof frames for single-pitch roofs are stable. Knowing them is useful for both independent masters and owners wishing to competently monitor the work of the builders.
Sources: http://vseokrovle.com/stropilnaja/147-stropilnaja-sistema-odnoskatnoj-kryshi.html, http://stroychik.ru/krysha/kak-sdelat-odnoskatnyu-kryshu, http://krovgid.com/ montazh / stropilnaya-sistema-odnoskatnoj-kryshi.html