Building a brick or block garage is a process that requires significant investment and time, while frame-frame garage from profile pipe It is becoming an increasingly popular alternative for car owners. This technology allows you to build a reliable shelter for the car in a matter of days, using the available materials and a minimum set of tools. The basis of the design is a durable metal skeleton that can withstand wind and snow loads, while remaining light.
The main advantage of this solution lies in its versatility: you can collect both a temporary canopy in the country, and a full-fledged insulated room for year-round use. Profile tube Square or rectangular cross-section provides ideal geometry of the nodes and simplifies the attachment of the skin. Unlike round rolled, it is much easier to weld sheets of metal to flat faces or screw sandwich panels with screws.
Before starting work, it is important to clearly determine the functionality of the future structure, since the choice of pipe cross section and the type of foundation will depend on this. Do not save on the project, because an error in the calculation of loads can lead to deformation of the structure at the first heavy snowfall. Next, we will discuss all the stages of construction in detail so that you can avoid typical mistakes and get a lasting result.
Project development and selection of materials
Any construction starts with a competent design, and a metal garage is no exception. You need to determine the dimensions of the building: for one passenger car, the minimum width should be 3.5-4 meters, and the length - at least 6 meters, so that there is room for passage and installation of racks. The height of the gate and ceiling is calculated taking into account the dimensions of a possible future transport, for example, an SUV with a trunk on the roof.
The key is the choice. profile-pipe. For load-bearing columns and roof trusses, roofs are usually used with a 100x100 mm or 80x80 mm section with a 4-5 mm wall. For runs and slanting, a pipe 60x40 mm or 50x50 mm is suitable. The use of too thin metal (less than 3 mm) for the main racks is unacceptable, as it is subject to corrosion and will not provide the necessary rigidity during welding.
When purchasing materials, pay attention to the quality of the metal: it should not have deep rust, cracks or bloating paint (if the pipe is painted). The optimal choice for regions with high snow load is considered steel grade St3sp or St09G2C.It has good welding and strength. Also, think in advance about the type of sheathing - flooring, sandwich panels or OSB-stoves, since the pitch of the crate depends on the weight of the coating.
Preparation of the foundation for a metal frame
Despite the relative ease of construction, the garage from the profile pipe requires a reliable base, which will prevent distortion and leaving the structure in the ground. The most common and economical option is ribbon It's a little bit of stuff. It evenly distributes the load from the walls and allows you to organize an observation pit or cellar if necessary.
The process begins with marking the site and digging a trench depth of 40-50 cm (for non-bulky soils). At the bottom is laid sand-gravel cushion thickness of 20 cm, which is carefully trampled. Then the formwork and the reinforcement frame of rods with a diameter of 10-12 mm are installed. It's important to consider anchor-bolt or embedded parts in the upper part of the tape for subsequent fastening of the frame racks.
☑️ Checklist for foundation preparation
An alternative to the tape foundation can serve as a monolithic plate, which will simultaneously perform the function of the floor. This is a more expensive, but also more reliable option, eliminating problems with moisture and rodents. If the soil is very thick, consider the option pile-screw, which allows you to lean the structure on the deep dense layers of the soil.
⚠️ Warning: Never start mounting the frame until the concrete is fully built. The minimum drying period of the foundation is 28 days, premature load will lead to the formation of microcracks and loss of the bearing capacity of the base.
Frame assembly: technology and nuances of welding
Installation of the frame is the most important stage, on which the strength of the entire garage depends. Assembly is best carried out on a level site, using the building level and the coalstone to control geometry. First, the side sections (farms) are assembled on the ground, and then they are lifted and fixed in a vertical position. This simplifies welding and increases safety.
The connection of elements is carried out by means of electric-welding. Seams should be solid, without passes and slag inclusions. To strengthen the nodes, it is recommended to use scarves made of sheet steel with a thickness of 6-8 mm. Pay special attention to the installation of the gate frame: it must be perfectly aligned vertically and horizontally, otherwise the gate will jam.
Welding parameters: Current 90-120A, Electrodes Ø3 mm (UONI or MP-3)After installing all vertical racks and horizontal runs, it is necessary to mount the roof truss system. For a single-sided roof, farms are made with a slope of at least 15 degrees for water and snow runoff. A gable roof requires more complex calculations, but provides better aerodynamics and the ability to arrange an attic space for storing things.
Secrets of high-quality welding of thin-walled pipes
When welding a profile pipe, it is important not to burn through the wall. Use a smaller current than for massive parts, and drive the seam in quick movements. If the pipe is thin (2-3 mm), it is better to make the grips every 5-10 cm, and then boil the seam completely, allowing the metal to cool down to avoid warping.
Covering walls and roofing: the choice of materials
The choice of material for the skin depends on the budget and the requirements for thermal insulation. The most budgetary option is flooring polymer-coated. It is light, durable and easy to install. The sheets are attached to the frame with special screws with a rubber washer, which prevent moisture from entering the hole.
If the garage is planned to be used as a workshop or second home, it is better to use it. sandwich-panel. They are made up of two layers of metal and insulation (minwat or polystyrene foam) between them. This material provides excellent thermal insulation without the need for additional insulation. Installation of panels requires care, since damage to the lock joint can violate the tightness.
| Materials | Heat insulation | Difficulty of installation | Term of service |
|---|---|---|---|
| Fresh-natil | Absent. | Low. | 20 to 30 years |
| Sandwich panels | Tall. | Medium | 40-50 years |
| OSB + siding | Medium (with insulation) | Tall. | 25-35 years |
| Polycarbonate | Low. | Low. | 10-15 years |
When installing a roofing, do not forget about waterproofing. Even if you don’t insulate your garage, the condensation formed on the inside of the metal can drip on the car. Using a vapour insulation film under the roof will solve this problem.
Installation of gates and security systems
The gate is the most loaded element of the garage design. For the frame structure, swing gates made of the same profile pipe as the main frame are ideal. The flaps are cooked in the form of a frame with diagonal slanting (from angle to corner), which prevents them from sagging under their own weight.
The hinges should be capital, preferably with bearings, and welded to pre-established mortgages on the gateway racks. After installing the flaps, it is necessary to check the ease of travel and, if necessary, adjust the position of the hinges. Shut-off devices (locks, pins) are installed after final adjustment.
Lubricate the gate loops with graphite lubricant or lithole at least twice a year - this will prevent creaking and jamming of the mechanism in winter.
If you plan to install automatic sectional or lifting gates, strengthening the gateway and side racks should be provided at the design stage of the frame. Automation creates additional dynamic loads that the light frame can not withstand without additional reinforcement.
⚠️ Warning: When installing heavy metal gates, make sure that the foundation beneath them is free of cracks. Additional weight of the flaps can push weak ground, if under the gate was not provided a separate reinforced jumper or reinforced plate.
Corrosion protection and finishing
Metal requires mandatory protection from atmospheric influences. Even galvanized pipe in the welding and cutting areas is vulnerable to rust. Before painting, the entire frame must be cleaned of scale, degreased and covered with a primer for metal containing anticorrosion additives (for example, with zinc).
For finishing, it is better to use alkyd or acrylic enamels intended for outdoor work. They form a strong, elastic film that does not crack when the metal expands temperature. It is recommended to apply paint in 2-3 layers, paying special attention to hard-to-reach places and welded seams.
The interior of the garage depends on your preferences. Metal walls can be sheathed with drywall (moisture resistant), wagging or simply painted with light paint to improve lighting. The floor, if it is not concrete, can be filled with rubble or covered with rubber modular tiles that are convenient for work and easy to wash.
High-quality anti-corrosion treatment increases the service life of a metal garage by 2-3 times, making investments in construction economically justified.
Frequently Asked Questions (FAQ)
Do I need to insulate a frame garage from a profile pipe?
If you plan to use the garage only to park the car in the warm season, insulation is not necessary. However, for year-round use, especially if there is a workshop inside, insulation (minwota or foam) and ventilation are critical to preventing condensation on the metal.
What thickness profile pipe to choose for the roof?
For a roof system of a single-slip roof when flying up to 6 meters, a pipe of 60x40 mm or 80x40 mm with a wall of 3 mm is usually enough. If the span is larger or a heavy roof is planned (for example, a slate), the cross section is increased to 100x50 mm or more, and the pitch of the farms is reduced.
Can you build a garage without a welding machine?
Yeah, it's possible. There are technologies of bolt connection, where the elements of the frame are joined with the help of special shaped elements and high-strength bolts. This is more difficult to assemble and requires precise drilling of holes, but allows the structure to be assembled in the field without electricity.
How long does the frame from the profile pipe last?
Provided high-quality anti-corrosion treatment and regular care (painting scratches once every 3-5 years), the metal frame lasts 50 years or more. The main enemy is moisture accumulating inside the pipes, so the ends of the pipes after cutting should be welded or closed with plastic plugs.