The Warehouse acts as a central logistics hub, collecting and distributing goods to your various production buildings. Warehouses can be built anywhere on your island, but requires a road connection to the Trading Post. The initial Small Warehouse provides two loading ramps.
All warehouses take 20 seconds to unload a cart.
A horse carriage can carry as many tons of resources at a time as their production can hold. The most common value for this is 4t.
Numbers for production balancing for fully loaded horse carriages of productions with 4t of internal output storage:
Small - 2 ramps, 6 unloads/min, 24t of resources.
Medium - 3 ramps, 9 unloads/min, 36t of resources.
Large - 4 ramps, 12 unloads/min, 48t of resources.
Grand - 6 ramps, 18 unloads/min, 72t of resources.
The Warehouse can be upgraded three times in the Old World, and twice in the Arctic and New World. Each upgrade provides additional loading ramps while increasing maintanance costs.