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How to measure the volume of a 40Ft Sidewall Trailer?

Nov 14, 2025Leave a message

Hey there! As a supplier of 40Ft Sidewall Trailers, I often get asked about how to measure the volume of these bad boys. It's a crucial question, especially if you're looking to maximize your cargo space or just want to know exactly how much stuff you can haul. So, let's dive right in and break it down step by step.

First off, what exactly is a 40Ft Sidewall Trailer? Well, it's a type of semi - trailer that's 40 feet long and has sidewalls. These sidewalls can be useful for protecting your cargo from the elements and keeping it secure during transit. You can check out our 40Ft Sidewall Trailer on our website to get a better idea of what it looks like.

Now, let's talk about measuring the volume. The basic formula for calculating the volume of a rectangular prism (which is what a 40Ft Sidewall Trailer closely resembles) is V = l × w × h, where V is the volume, l is the length, w is the width, and h is the height.

Measuring the Length

The length of a 40Ft Sidewall Trailer is pretty straightforward. It's called a 40 - foot trailer for a reason! But you still need to measure it accurately. Start from the front of the trailer to the very back. Make sure you measure along the interior of the trailer, as the exterior might have some protrusions or extra parts that don't count towards the cargo - carrying space. Usually, the actual interior length might be a bit less than 40 feet due to the structure of the trailer, like the thickness of the front and back walls. So, grab a long measuring tape and get an exact measurement.

Measuring the Width

Measuring the width is also important. You want to measure the distance from one sidewall to the other at the widest point inside the trailer. This might vary a bit depending on the design of the trailer. Some trailers might have a slightly tapered shape towards the top, so it's best to measure at the base where the cargo will rest. Use your measuring tape and make sure it's straight across to get an accurate width measurement.

Measuring the Height

The height measurement is a bit more tricky. You need to measure from the floor of the trailer to the highest point inside. This could be the top of the sidewalls or the ceiling if there's an interior roof structure. Be careful when measuring the height, especially if the trailer has any equipment or fixtures on the ceiling that might affect the measurement. You want to measure the usable height for cargo, so don't include any non - cargo areas like ventilation ducts or light fixtures that are attached to the ceiling.

Once you have your length, width, and height measurements, simply multiply them together using the formula V = l × w × h. For example, if your interior length is 39 feet, the width is 8 feet, and the height is 8.5 feet, then the volume V = 39 × 8 × 8.5 = 2652 cubic feet.

It's important to note that the actual volume you can use for cargo might be less than the calculated volume. There could be some areas inside the trailer that are taken up by structural supports, wheel wells, or other equipment. So, when planning your cargo, make sure to take these factors into account.

Sidewall Dropside 3-Axle Cargo Transport Trailerside wall sem itrailer

Now, let's talk about some of the other types of trailers we offer. We also have the 4 Axle Side Wall Trailer. This trailer has four axles, which can provide more stability and weight - carrying capacity. When measuring the volume of a 4 Axle Side Wall Trailer, the process is the same as for the 40Ft Sidewall Trailer. You still need to measure the length, width, and height and use the volume formula.

Another option is our Sidewall Dropside 3 - Axle Cargo Transport Trailer. This trailer has a dropside feature, which means the sidewalls can be lowered for easier loading and unloading of cargo. Measuring the volume of this trailer follows the same principles as well. But keep in mind that when the sidewalls are down, the usable volume might change, especially if you're loading taller items.

If you're in the market for a 40Ft Sidewall Trailer or any of our other trailers, we're here to help. Whether you need advice on measuring the volume for your specific cargo needs or want to discuss the features of our trailers, we're just a message away. We understand that every customer has different requirements, and we're committed to providing the best trailers and service.

So, if you're interested in purchasing a trailer, don't hesitate to reach out. We can have a detailed discussion about your cargo volume needs, the type of trailer that would suit you best, and any other questions you might have. Let's work together to find the perfect trailer for your business.

References

  • General knowledge of trailer design and measurement principles.
  • Industry standards for trailer manufacturing and cargo volume calculations.
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