If you're shopping for a weighbridge in Africa – whether it's for a logistics yard in Nairobi, a mining site in Zambia's Copperbelt, or a seasonal farm in Tanzania – you'll quickly run into this question: should you dig a pit, bolt it on the ground, or go portable?

There's no universal answer. Each type has real trade-offs. Let me break it down the way we explain it to our customers at Fujian Fangda Weighbridge Manufacturer, China (we've supplied and installed hundreds of units across Africa).

First, what's a pit-mounted weighbridge?

This one sits flush with the ground. The deck is level with the road surface, so trucks drive straight onto it without any ramp. It saves space and looks neat – ideal for tight urban logistics yards where every meter counts.

But here's the catch: pits collect mud, water, and debris. In Africa's rainy season, a poorly drained pit becomes a swimming pool for your load cells. We've seen pit scales in Dar es Salaam that needed cell replacement every 12 months because water sat in there for weeks. Good drainage and a concrete sump pump are non-negotiable. Also, cleaning a pit is manual labor – someone has to climb down and shovel out the muck.

When do we recommend pit-mounted?  

- You have limited space (e.g., container depots, city distribution centers)  

- You have good drainage design and maintenance budget  

- You don't move the scale ever  

Cost: Civil works are expensive – expect $3,000–$6,000 extra for a proper pit with drainage and reinforced walls.

This price is for reference only, and the specific price shall be subject to actual consultation.

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Second, surface-mounted (above-ground) weighbridge

This is the most common choice across Africa for a reason. The scale sits on concrete foundations above ground, with approach ramps on both ends. No pit to clean, no flooding risk. Maintenance is simple – you can walk under the deck (if it's high enough) or access load cells from the side.

We've installed surface-mounted 80-ton scales at cement factories in Zambia and freight yards in Kenya. One customer in Kitwe told me: "The old pit scale was a headache every rainy month. We switched to surface-mounted three years ago – zero water issues."

Downsides?  

- Requires more land length (approach ramps add about 6–8 meters on each side)  

- Trucks have to drive up a small slope – fine for most, but some low-bed trailers may bottom out if the ramp angle is steep. We design ramps at 5–8 degrees to avoid that.

When do we recommend surface-mounted?  

- Most general use: factories, mines, farms, freight stations  

- You want easy inspection and lower long-term maintenance  

- You have enough space for approach ramps  

Cost: Civil foundations are simpler – roughly $1,500–$3,000, depending on soil conditions.

This price is for reference only, and the specific price shall be subject to actual consultation.

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Third, portable weighbridge

Portable systems are modular – usually two or three steel sections with built-in load cells that sit on pre-cast concrete pads or steel beams. No permanent foundation required. You can set one up in a day and move it to another site next season.

We recently supplied a portable 60-ton scale to a cotton cooperative in southern Tanzania. They weigh trucks during harvest (three months per year), then disassemble and store the scale under a shed. Another client uses a portable unit for road construction projects – the scale moves every 6–8 months as the paving crew advances.

Limitations:  

- Accuracy is slightly lower than permanent scales (typically ±0.5% vs ±0.1% for pit or surface-mounted), but that's fine for most internal use or farm applications  

- Not ideal for heavy, high-frequency weighing (e.g., 200 trucks/day, five years straight) – the modular joints can wear faster  

- Security: portable scales are easier to steal or tamper with, so you need a locked compound or night watchman

When do we recommend portable?  

- Seasonal operations (harvest, mining camp, construction site)  

- You need to relocate every 1–2 years  

- You have lower accuracy requirements (e.g., internal inventory, not trade custody)

Cost: The scale itself is often 20–30% cheaper than a permanent 80-ton unit, but you still need level ground and a stable base. Total installed cost can be similar to surface-mounted if you buy good-quality pads.

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Quick comparison table (real numbers from our 2024–2025 African projects)

This price is for reference only, and the specific price shall be subject to actual consultation.

So which one should you pick?

Here's the simple version:

- Short on land and have good drainage budget? Go pit-mounted.

- Normal site with space and want less headache? Go surface-mounted. (This is our default recommendation for 80% of African clients.)

- Moving around or only need it a few months a year? Go portable.

Still unsure? Send us a photo of your site and tell us your busiest month's truck count. We'll sketch out the best option – no sales fluff, just what's worked for other businesses like yours across Zambia, Kenya, Tanzania, and beyond.

Fujian Fangda Weighing Instruments provides a full range of electronic weighbridge from 30 tons to 200 tons