How to choose the right tonnage for your weighbridge (30t vs 60t vs 100t vs 150t)?
This is probably the single most common question we get before someone actually places an order, and it's a fair one — get it wrong and you're either paying for capacity you'll never use, or you've bought a scale that can't handle the trucks you actually need to weigh six months from now.
I work with Fujian Fangda Weighbridge, a truck scale and load cell manufacturer based in Fujian, China, and this conversation happens on almost every quote call we do. So instead of repeating it one customer at a time, here's the actual thinking we walk people through.
Start with the heaviest vehicle you'll realistically weigh, not the average one
This sounds obvious once it's said out loud, but it's the mistake we see most often. Someone specs a scale based on their typical delivery truck, forgets that once or twice a month a much heavier vehicle comes through — a fully loaded multi-axle truck, a specialized hauler, something outside the normal pattern — and ends up with a scale that's technically fine 95% of the time and unusable exactly when it matters most.
The right approach is to look at your heaviest realistic vehicle, fully loaded, and build in some margin above that — not massive overkill, but enough that an occasional heavier load or a slightly miscalculated cargo weight doesn't put you right at the ceiling of the platform's rated capacity every single time.
30 tons — light trucks, agricultural and local delivery use
A 30-ton weighbridge covers standard 2 and 3-axle trucks, the kind used for local delivery, smaller agricultural transport, and general logistics where you're not dealing with heavy multi-axle rigs. This is a common capacity for farms, small distribution centers, and local material yards where the heaviest thing crossing the platform is a mid-size delivery truck, not a fully loaded semi.
Where this goes wrong: sites that start out only weighing light trucks and then, a year or two later, start receiving deliveries from larger regional carriers. If there's any realistic chance your customer base or supplier relationships will scale up, it's worth having that conversation before ordering rather than after.
60 tons — the standard for most commercial trucking
This is the capacity we quote most often, because it covers the bulk of standard commercial trucking — fully loaded semi-trailers, standard 5 and 6-axle configurations, the kind of vehicle that makes up most long-haul and regional freight. If you're running a general logistics operation, a distribution center, or a mid-size industrial site and you're not sure which capacity to pick, 60 tons is usually the safe, well-covered middle ground rather than the maximum end of what's available.
It's also usually the most cost-efficient choice per unit of actual utility — you're not paying for headroom you'll rarely use, but you have enough margin that a heavier-than-usual load doesn't put you at risk of overloading the platform.
100 tons — heavy haul, construction, and bulk material transport
Once you're regularly weighing heavy multi-axle trucks — construction equipment transport, bulk material haulers, larger regional freight combinations — 60 tons starts getting tight, and a 100-ton platform gives you the headroom those vehicles actually need. This is common for construction material yards, quarries, and larger industrial logistics operations where the trucks crossing the scale are consistently heavier than standard commercial freight.
The mistake we see here is underestimating cumulative axle weight on multi-trailer configurations — it's not just the tractor and one trailer, and some regional heavy-haul configurations get closer to this ceiling than people expect when they're only thinking about a single unit.
150 tons — mining, ports, and specialized heavy transport
This is the range for mining haul trucks, port and bulk cargo terminal operations, and specialized heavy transport where the vehicles themselves are purpose-built for hauling far more than standard commercial freight. If you're at this level, you already know your equipment's rated weight, and the conversation is less about "which capacity" and more about platform length, array configuration, and how many load cells you need distributed across the platform to handle both the total weight and the load distribution pattern of that specific equipment.
A question worth asking yourself before you order
Beyond raw vehicle weight, it's worth thinking about how your operation might change over the next five years, not just what you're weighing today. Scales are a long-term investment, and reinforcing or replacing a platform because you undersized it initially is a lot more expensive than building in reasonable margin from the start. That doesn't mean always buying the biggest option — a 150-ton platform for a farm weighing light delivery trucks is just as much of a mistake as a 30-ton platform for a construction yard, just in the opposite direction. It means actually thinking through your realistic growth trajectory rather than defaulting to either extreme.
A case that comes up a lot in these conversations
A distribution center we worked with a couple years back had originally installed a 60-ton scale, which made sense for what they were weighing at the time — standard delivery trucks, nothing unusual. About eighteen months in, they picked up a new contract that brought in heavier regional freight combinations a few times a week, and started running into a problem: some of those loaded trucks were pushing right up against the platform's rated capacity, which isn't just a formality — running a scale consistently near its ceiling accelerates wear on the load cells and increases the odds of an accidental overload doing real damage rather than just being a one-off event the cell can absorb.
They ended up needing to upgrade to a 100-ton platform earlier than they would have liked, which meant a second capital expense and some operational downtime during the swap that could have been avoided if the original sizing conversation had accounted for where the business was likely headed, not just where it was at the time of purchase. It's not that they made an unreasonable decision initially — 60 tons was genuinely the right call for what they were weighing then — but it's a good example of why it's worth spending a few extra minutes on the "where is this going" question before finalizing an order, rather than treating it as a decision that only needs to reflect today's operations.
What we actually do on these calls
Most of the time, this isn't a decision you should be making purely off a chart like the one above — vehicle types, regional trucking standards, and site-specific factors all shift the right answer somewhat. What we usually do on a quote call is ask what you're weighing today, what you expect to weigh in a few years, and what your site conditions look like, and then help size both the platform and the load cell configuration around that, rather than just pointing you toward whatever capacity happens to be sitting in stock.
If you're in the middle of specifying a weighbridge and aren't sure which of these ranges actually fits your situation, that's a conversation worth having before you order rather than after installation, when the fix is a lot more expensive than a phone call would have been.
