Planning the construction of your own garage is a crucial stage, on which the comfort of the car and the durability of the structure itself depend. Many car owners make the mistake of relying on the standard sizes of Soviet cooperatives, forgetting that modern cars have become much wider and longer than their predecessors. Garage size should be calculated not only for the dimensions of the body, but also taking into account the free space for maintenance, installation of shelving and safe exit of the driver.
The use of building blocks (gas concrete, foam concrete, cinder block) is one of the most popular solutions due to the availability of the material and the high speed of wall construction. However, in order for the structure not to turn out to be too close or, conversely, unreasonably expensive in heating, it is necessary to accurately determine the structure. geometrical The future of the building before the purchase of the first pallet material. In this article, we will break down all the design nuances so that you can build the perfect home for your car.
Standard dimensions of the car and space requirements
Before proceeding to the drawings, it is necessary to clearly understand what vehicle we are dealing with. The average C-Class sedan is about 4.5 meters long and about 1.7-1.8 meters wide without mirrors. However, crossovers and SUVs, which today make up a significant share of the fleet, can reach a length of 4.8-5 meters, and in width with open doors require up to 3.5-4 meters of free space.
The minimum comfortable size of the garage is determined not only by parking, but also by the ability to go around the car without getting dirty on the wall. Security gap between the sidewall of the car and the wall should be at least 0.8-1 meters. This will allow you to fully open the door without risking damage to the paintwork or crumbling the metal of the neighboring wall. In addition, you need to consider the place for installing the workbench, shelves with consumables or seasonal rubber.
When calculating the width of the garage, keep in mind that rear-view mirrors in modern cars often fold, but when parking in a narrow garage, it is better to focus on the maximum width with open mirrors.
There is an unspoken “three meters” rule that states that the interior width of a garage should not be less than 3 meters for one car. This allows you to place the car in the center and leave 60-70 cm on each side, which is an absolute minimum. For a full-fledged workshop or garage-parking with long-term storage, it is better to increase the width to 3.5-4 meters.
Calculation of optimal length, width and height of the structure
Optimal dimensions of the garage from blocks are calculated by the formula: car dimensions plus technological gaps. Let’s analyze each parameter in detail to avoid errors in the layout of the foundation. Length of structure should allow not only to park the car, but also leave space for installing the rack in the end part or free passage in the front.
The recommended length of the interior space is the length of the car plus 1.5-2 meters. If your car is 4.5 meters long, the total length of the garage should be about 6-6.5 meters. This will make it possible to install a workbench at the front wall or simply comfortably open the hood to check the level of oil and antifreeze, without resting your head against the gate or wall.
⚠️ Attention: When calculating the length, do not forget to take into account the thickness of the gateway and the mechanism of their opening. If you are planning to install sectional gates with torsion springs, they may need additional space under the ceiling at the entrance.
Garage height is a parameter that is often overlooked, especially if you plan to buy a taller car in the future. The minimum height of the gate opening should be 30-50 cm higher than the height of the car. The inner height of the ceiling is usually within 2.5-3 meters. This is enough for the installation of hanging shelves, storage systems on the ceiling or the installation of a lift (if the construction of the floor and foundation allows).
The gold standard size of a garage for one car of blocks: length 6 meters, width 3.5-4 meters, height 2.5-3 meters.
The choice of block type and their impact on size
The material from which the walls are erected directly affects the final external and internal dimensions of the structure. Blocks come in different formats and densities, and each type requires consideration of its thickness when designing. The most popular aerated concrete (gas-silicate) and foam concrete blocks and ceramsite concrete products.
The standard length of the wall block is most often 600 mm, which is a multiple of 1, 1.5, 2, 2.5 and 3 meters. When designing a garage, try to tie dimensions to this module to minimize the amount of cut blocks and waste. For example, at a length of 6 meters, you will lay exactly 10 blocks (including seams), which will eliminate the need to cut out the pieces.
Wall thickness for unheated garage in the middle of Russia can be 200 mm (20 cm), if used aerated concrete density D400-D500. For heated rooms, where it is important to keep warm, the wall thickness should be at least 300-400 mm or require additional insulation. This significantly affects the dimensions of the foundation and the area of construction.
Below is a table comparing the main characteristics of popular block materials for garage construction:
| Type of block | Density (kg/m3) | Thermal conductivity | Recommended wall thickness |
|---|---|---|---|
| Aerated concrete D400 | 400 | 0.11 W/m°C | 300-400 mm |
| D600 foamblock | 600 | 0.14 W/m°C | 400 mm |
| Slagblock | 1000-1200 | 0.35 W/m °C | 400-500 mm + insulation |
| ceramsite concrete | 800-1000 | 0.25 W/m°C | 400 mm |
Why is the number of blocks important?
Standard block sizes (usually 600x300x200mm or 600x400x200mm) allow for rapid wall construction. However, if you design a 5.8-meter garage, you will have to saw each row, which will increase the time of work and the amount of defects. Always a multiplicity of 0.6 meters or 0.5 meters (depending on the type of block) is the key to a fast construction.
Construction technology: from foundation to roof
Construction of a garage from blocks begins with laying a reliable foundation. Since block materials are sensitive to ground movements and require a flat base, the best choice will be a belt foundation or a monolithic plate. Tape foundation It is buried below the freezing point of the soil, which is especially important for regions with severe winters.
After drying the concrete (usually 20-28 days), the masonry of the walls begins. The first row of blocks is the most important: it should be perfectly aligned along the horizon, as any skews will go up the entire wall. Laying is carried out on a special glue for aerated concrete or cement-sand solution, depending on the selected material. The seams should be thin to avoid cold bridges.
- 🧱 Front row: It is laid on waterproofing (ruberoid) with a thorough level check.
- 🧱 Reinforcement: Each 3-4 row of blocks must be reinforced with a masonry net or reinforcement in the stroves to prevent cracks.
- 🧱 The jumpers: above the gates and windows are installed concrete or metal lintels, which take on the load from the overlying masonry.
- 🧱 Armapobelt: under the mauerlat (roof base) must be poured reinforced concrete armoposse around the perimeter of the walls for uniform distribution of the load.
The roof for the garage is most often made single or gable. The single-sided design is easier to perform and cheaper, but requires the organization of the correct slope for water flow. The gable roof allows you to organize an attic space for storing things, which significantly increases the functionality of the garage.
Cost estimates and materials required
The financial side of the issue is often the decisive factor. The cost of building a garage of blocks consists of the price of materials, delivery, works on the foundation, roofing and installation of gates. Blocks themselves are inexpensive, but require high-quality exterior finishes (plaster, siding) to protect against moisture, as many of them are hygroscopic.
The estimate must include the cost of cement, sand, rebar, insulation (if the garage is heated), materials for the roof and, of course, the gate itself. Sectional gates more expensive than swinging, but more convenient to operate and better retain heat. Do not forget to include in the budget tools: concrete mixer (renting or buying), level, craftsman, stroborek.
⚠️ Attention: Savings on the foundation or armopositories in the construction of blocks is unacceptable. The fragility of block materials on the fracture can lead to cracks around the perimeter of the garage after a year of operation, if the load-bearing structures are weak.
☑️ Checklist before purchasing materials
Internal arrangements and ventilation
After the construction of the box and the installation of the gate, the stage of internal improvement begins. Even if the garage is not heated, proper ventilation is critical. Exhaust gases, humidity from wet snow on the body and gasoline vapor should be removed effectively to prevent corrosion of the car and damage to tools.
The optimal ventilation system for the garage is supply and exhaust. The supply hole is located at the floor (at a height of 15-20 cm), and the exhaust hole is located at the ceiling diagonally. Natural traction is often not enough, so it is recommended to install in the exhaust channel. deflector or an electric fan that can be turned on by a timer or humidity sensor.
For walls inside the garage, plaster is best suited with subsequent painting with washable paints or facing with a proflist. This creates a solid surface that is easy to wash. The floor in the garage of blocks is most often made concrete, with a hardened top layer (topping) or a coating of epoxy compounds to avoid dusting of concrete.
Should we make a lookout pit?
A viewing pit is advisable if you plan to service the car yourself. However, in garages with a high level of groundwater from the pit is better to abandon or provide high-quality waterproofing and drainage, otherwise the garage will turn into a pool.
Lighting also plays an important role. One light bulb under the ceiling is not enough for repair work. It is recommended to combine the general light with the local illumination of the working area (bench) and the observation pit. Use protected lights with a moisture and dust resistance class not lower than IP54.
Frequently Asked Questions (FAQ)
What is the minimum size of a garage per car is considered acceptable?
The minimum permissible size is 3x6 meters (18 m2). However, this is a very tight option, suitable only for storing the car. For comfortable use and minor repairs, a size of at least 4x6 meters (24 m2) is recommended.
Do I need to insulate the garage from blocks if it is not heated?
Insulation is necessary to prevent the formation of condensation. The difference in temperature inside and outside leads to the fact that moisture settles on the cold walls and body of the car, causing corrosion. Insulation (minwat or foam) shifts the dew point and protects the car.
Can I build a garage in winter?
Laying blocks on a cement solution at negative temperatures can not be conducted - the solution will freeze and will not gain strength. Special aerated adhesives allow you to work at temperatures up to -10 ° C, but require the use of winter additives and protection of seams from drying out.
What is the best wall thickness for a garage of aerated concrete?
For unheated garage in the middle of Russia optimal wall thickness of 200 mm (20 cm). If heating is planned, the thickness should be at least 300-400 mm or 200 mm with mandatory external insulation.