sail0r
Spellcaster
When trying to evaluate which building is better (e.g regarding culture or mana production) everyone divides total reward by the number of squares of the building to find the reward per square. This is fine as long as the building does not require a street.
If the building requires a street then the size of its narrow side divided by 2 should be added to the number of squares of the building as without a street you cannot use it. Large buildings have this way a better reward per square than smaller buildings.
Let me show you an example:
The large building is 6x3. The small one is 1x4. In order to be able to compare them we need the same number of squares. Two of the large buildings for a total of 36 squares and 9 of the small buildings for a total of 36 squares.
The 2 large buildings need a total of 39 squares in the city. The 9 smaller ones however need 41 squares because they need more streets.
So when calculating the reward per square for a building that requires a street you should add the narrow size divided by 2 (because it shares the street with the opposite building) assuming that you will place the street on its narrow size.
If the building requires a street then the size of its narrow side divided by 2 should be added to the number of squares of the building as without a street you cannot use it. Large buildings have this way a better reward per square than smaller buildings.
Let me show you an example:
The large building is 6x3. The small one is 1x4. In order to be able to compare them we need the same number of squares. Two of the large buildings for a total of 36 squares and 9 of the small buildings for a total of 36 squares.
The 2 large buildings need a total of 39 squares in the city. The 9 smaller ones however need 41 squares because they need more streets.
So when calculating the reward per square for a building that requires a street you should add the narrow size divided by 2 (because it shares the street with the opposite building) assuming that you will place the street on its narrow size.