The season of construction of cottages, greenhouses and canopies often poses a difficult logistical task for car owners. Leafs polycarbonate They have a standard length of 6 or 12 meters, which is much larger than the dimensions of any passenger sedan or hatchback. Many drivers, not wanting to overpay for the services of a truck taxi or order delivery with a manipulator, decide to transport the material themselves.
However, such transportation carries serious risks for both the integrity of the material itself and for road safety. Incorrectly fixed cargo can be displaced during braking, cause an accident or lead to a fine from the traffic police inspector for violation of the rules for the transportation of large cargoes. In this article, we will discuss in detail the technical nuances, legal aspects and practical tips for organizing such transportation.
Self-driving logistics requires careful preparation and understanding of the physics of long-distance cargo movement. Ignoring basic fastening rules can lead to the fact that expensive material will be spoiled by wind flows even before arriving at the facility. monolithic And cellular polycarbonate, despite its lightness, has a high sailing capacity, which makes them extremely vulnerable at high speeds.
Selection of vehicle and preparation of roof
The first step to successful transportation is to evaluate your vehicle’s capabilities. The ideal option for transporting long sheets is a car with a roof-cart (Rayling) or specialized brackets for boats and building materials. If only crossbars (arcs) are installed on the roof, you must make sure that the distance between them is large enough to prevent the sheets from sagging under their own weight.
The surface of the roof or cross should be clean and smooth. The presence of sand or fine debris can cause scratches on the protective layer of polycarbonate when vibrating while moving. For protection, it is recommended to use soft pads, for example, pieces of old carpet, foamed polyethylene or special rubber linings. They also perform the function of shock absorber, extinguishing the vibration of the body.
It is important to consider the load capacity of your car’s roof. Standard rails of most passenger cars are designed for a dynamic load of 50 to 75 kg. Although the polycarbonate itself is lightweight, the weight of the mounting system and the dynamic loads when turning can significantly exceed the static weight of the load. Exceeding the permissible load can deform the roof or damage the mounting points of the rails.
⚠️ Attention: Never put polycarbonate sheets directly on bare roof metal or plastic elements without a protective layer. At a speed of movement, even 40-50 km / h, the wind load will begin to "walk" the sheet, and abrasive dust particles will instantly turn the smooth surface into a matte one, spoiling the presentation of the material.
If your car doesn’t have rails, using a soft-tipping through the cabin (through open windows) is an extremely undesirable option. This creates a risk of damage to the cabin, violates the tightness of the body and does not provide reliable fixation. In extreme cases, if there are no railings, you can use special suction cups with hooks, but their reliability must be checked in advance.
Technology of fastening of cargo on the trunk
Reliability of fixation is a key safety factor. For fastening polycarbonate is strictly not recommended to use thin ropes or twines that can stretch or burst in the wind. The best choice is to snoring-belt (ratchets) or straps with friction buckles. The minimum width of the belt shall be 25 mm.
The fastening process begins with laying the sheets on the prepared supports. The sheets should lie flat, without overhang on one side more than on the other, so as not to disturb the weighting of the car. Mounting is carried out at least in two points: closer to the front of the roof and closer to the rear. If the length of the sheets is 12 meters, it is desirable to add a third mounting point in the middle.
- 🔹 Cross tension: Belts should be passed through the roof and load so that they cover the sheets from different sides, creating cross tension. This prevents the load from moving to the left or right.
- 🔹 Edge protection: In places of contact of belts with edges of polycarbonate be sure to use protective corners or linings of dense cardboard. The sharp edge of the belt under strong tension can cut through cells of cellular polycarbonate.
- 🔹 Tension control: Stretching your belts to a state of elasticity, but without fanaticism. Excessive force can deform sheets or damage the roof structure, and weak tension will allow the load to "walk".
Pay special attention to fixing the hanging ends. If the sheets protrude beyond the dimensions of the car, their ends also need to be fixed so that they do not slam in the wind. Additional belts can be used, tying the ends to regular towing eyelets or strong body elements in the front and back, taking care not to scratch the bumper.
☑️ Checklist for safe fastening
Legal regulations and rules for the transportation of oversized
Transportation of long cargo is regulated by paragraph 23 of the traffic rules of the Russian Federation. According to the rules, the cargo must not protrude beyond the dimensions of the vehicle in front and behind by more than 1 meter. If the polycarbonate sheets with a length of 6 meters protrude behind the standard sedan by more than a meter, such transportation is already considered transportation. bulk-load.
When protruding from 1 to 2 meters (total front and back or only behind), it is necessary to mark it in daylight, and in the dark and in conditions of insufficient visibility - to mark the front with a white lantern or reflector, and the back - with a lantern or reflector red. It is also recommended, but not strictly mandatory for individuals with a projection of up to 2 meters, to install the sign "Large-sized cargo" (square shield with black and white stripe).
If the length of the protruding cargo exceeds 2 meters (for example, when transporting 12-meter sheets on a short car), movement without special permission and escort is prohibited. In this case, the individual will have to either cut the material (which is not always possible) or order specialized transport. Violation of the rules of transportation of goods entails a fine according to h. 1 st. 12.21 RF Administrative Code.
| Leg parameter | Daytime | Night Time/Fog | Large cargo sign |
|---|---|---|---|
| Less than 1 meter | Not required | Not required | Not required |
| 1 to 2 meters. | Recommended sign | Lantern/reflector | Preferably (square 40x40 cm) |
| More than 2 meters. | Prohibited without permission | Prohibited without permission | Definitely + escort |
Traffic police inspectors pay special attention to such cars, as the dangling cargo poses a real threat to other participants in the movement. Even if you are formally stowed within a meter, having a bright red ribbon on the end of the load and a set sign "KG" will reduce the likelihood of stopping for inspection and demonstrate your responsibility.
Speed mode and driving characteristics
The aerodynamics of a car with a load on the roof changes dramatically. Sailing Polycarbonate is high, and in the side wind the car can be strongly derailed. In addition, the shifting of the center of gravity upwards makes the car less stable in cornering. The recommended speed with such a load should not exceed 60 km / h, and in conditions of strong wind - 40 km / h.
The braking distance of the car increases, as the inertia of the load continues to push the car forward even after pressing the brake pedal. Manoeuvres should be smooth: avoid sharp changes, emergency braking and cornering at high speed. Especially dangerous are exits from the track at high speeds, where the lateral load on the roof is maximum.
⚠️ Attention: When entering forest plantations or driving under low-lying structures (arches, tree branches, wires), remember the real height of your vehicle with cargo. Polycarbonate can catch on the branch, and the inertia of movement will simply tear the sheets from under the belts or crush them with an accordion.
Regular stops to check the condition of the fastener are mandatory. After the first 5-10 kilometers of the path, you need to stop and re-tighten the belts, as the material and fasteners can sit down a little. In the future, the check should be carried out every 30-40 kilometers or after passing areas with poor road surfaces.
Tip: Take a couple of spare straps and rolls of wide scotch with you on the trip. If the main belt fails on the way, the spare will allow you to continue the movement, and the tape will help temporarily fix the torn edge of the sheet.
Protection of polycarbonate from damage in transit
Polycarbonate is a durable material, but its surface, especially with a UV protective layer, is sensitive to mechanical damage. During transportation, the sheets can rub against each other or against the elements of the fastener. To avoid scratches, it is recommended to lay soft material between the sheets (if there are several), for example, old blankets or a special stretch film.
The ends of the sheets are the most vulnerable place to get moisture, dirt and insects. If you are carrying the material in the open, be sure to seal the ends with construction tape or close them with special end profiles if they are already purchased. Getting dirt inside the cells of cellular polycarbont will lead to the appearance of ugly dark spots that cannot be washed.
UV radiation also plays a role in long-term transportation, although the sun will not cause critical damage in one trip. However, if you plan multiple flights throughout the day, try to park your car in the shade or cover the load with an opaque awning to avoid local overheating and possible deformation.
- 🛡️ Protection from stones: The front edge of the lower sheet may suffer from stones flying out from under the wheels in front of the cars. Cover the front overhang with a dense cloth or cardboard.
- 💧 Moisture protection: Although polycarbonate is not afraid of water, water inside cells is a problem. Hermetically pack the ends if it is predicted to rain.
- 🌬️ Wind protection: Make sure that the wind does not blow under the sheets, causing them to vibrate. Vibration is the main enemy of the integrity of the cell structure.
What do I do if it's hailing?
If during the movement began a strong hail, you must immediately move to the side of the road and stop, taking shelter in the cabin or building. Polycarbonate withstands impacts, but hail with a diameter of more than 2 cm at speed can penetrate the sheet or leave dents. Wait for the weather.
Alternative methods of transportation
If you doubt the reliability of the roof mount or your car is not suitable for such loads, it is worth considering alternatives. One of them is the use of trailer. Even a small trailer allows you to lay 6-meter sheets without overhangs or with minimal overhangs, which is much safer and more convenient.
The second option is vertical transportation inside the cabin. This is only possible for sheets up to 3 meters long (half a standard sheet) and only in station wagons or minivans with folded seats. Sheets 6 and 12 meters inside the cabin can not be placed without damage to the interior and violation of safety rules (overview through the rearview mirror).
The third, often the most reasonable option for a one-time transportation is a “freight taxi” service or delivery from a store. The cost of carrying a manipulator or gazelle can be comparable to the cost of buying belts, gasoline for two round trips (round-trip), and the risk of damaging your own car. In addition, professionals load the material correctly, using soft slings and fixtures.
⚠️ Attention: Never try to carry polycarbonate sheets by sticking them out through side windows and holding them with your hands. It's deadly. With a sharp braking or collision, the sheet will pass through the cabin by inertia, causing serious injuries to the driver and passengers.
When choosing a mode of transportation, soberly assess your driving skills, the condition of the car and weather conditions. The savings on delivery should not cost health or a new car.
The main conclusion: The safety of transportation of polycarbonate does not depend on the number of belts, but on the correctness of their location and constant testing of tension in the way. Do not exceed the speed of 60 km / h.
Frequently Asked Questions (FAQ)
Can polycarbonate be transported in winter?
Yes, you can, but with caution. At low temperatures (below -15°C), polycarbonate becomes more fragile. Sharp blows or strong tension of belts can lead to the formation of microcracks. In winter, sharp maneuvers should be avoided and softer gaskets should be used under the belts.
Do I need to remove the protective film before transportation?
Absolutely not. The protective film should remain on the sheets until the moment of installation. It protects the surface from scratches, dust and ultraviolet light during transportation and storage. It should be removed immediately before installation.
What to do if polycarbonate sheets are longer than 12 meters?
The standard length of sheets is 6 or 12 meters. If you need a single sheet of longer length (for example, for an arched greenhouse without joints), it can be ordered from the manufacturer. However, the transportation of such lengths by passenger car is impossible by law and technically dangerous. You will need a trawl or specialized length gauge.
How to fix if there are no rails, only a smooth roof?
Use soft belts, passing them through the cabin (opening the doors, putting the belts on the roof and closing the doors, but not clamping the belts in the seals, so as not to damage them, but gently bringing the ends into the cabin and fixing the knots on opposite handles or seats). However, this method is less reliable and requires very careful driving. It is better to use suction cups with hooks or contact professionals.