How to calculate the demand for road salt for a commune?

Base pattern

Q [t] = P [m²] × d [g/m²] × n / 1,000,000

where: P – road surface, d – dose per action, n – number of actions in the season.

Typical doses of road salt

• Preventive (against rainfall): 10–15 g/m²
• For black ice: 15–25 g/m²
• On icy surfaces: 30–40 g/m²

Example for a commune with 80 km of roads

80 km × 5 m wide = 400,000 m². Dose 20 g/m², 25 actions:

400,000 × 20 × 25 / 1,000,000 = 200 tons of salt

It is recommended to order 20-30% more as a safety buffer.

When to order?

The optimal order time is May–August. Prices are then the lowest. In autumn, the market is tight, prices increase by 15-30%.