How does Human Repair mechanic actually work?

[Blahblah_Blagar]

Could anyone provide full information about how the repair mechanic works? I think I might have seen some guides which show how each additional worker affects the repair time and cost, but I can't seem to find it. Is it linear?

I've had this concept for a mission where you'd have to repair a massive structure to win. But in practice it's extremly janky.

I've created a building based on the Dalaran Observatory, set it's repair time to 20 minutes and it's repair cost to 15000 gold. Then I've placed a handful of peasants on the map to test it out and to my surprise around 15 workers repaired the building in around a minute, but the repair cost less than 5000 gold. The idea is too good to pass on it just because of some weird mechanical issues

 

[Cheshire]

Repair

• Repair cost to take a mechanical unit or a building from 1 HP to full is 35% of the original cost to build the unit or building.
• Repairing an upgrading building uses the repair time and the cost of the original building.
• Repair time to take a mechanical unit or a building from 1 HP to full is 150% of the original time to build the unit or building.
• Base repair cost (before 35% ratio is applied) for upgraded buildings is the sum of costs of initial building and its upgrades.
• Base repair time (before 150% ratio is applied) for upgraded buildings is within 15% of the time required for last building upgrade.

source: Warcraft III - Basics -> Building Basics

(it seems like it's linear and this info is per worker)