Theatre yields too little happiness?

[Megalou]

I'm new to Civ4 but could not find anything on this oddity.

Here is the info about theatres:

Here is London, a theatre just built:

 

[CyberChrist]

This is not a bug (assuming your culture rate is at 0% - screen doesn't show)

You need to increase culture rate to get any happiness from Theatres at all. They don't offer any happiness by default, but does add 1 happy face for each 10% of commerce assigned to culture.

This is the same for extra happiness from Colosseums btw (except that they only generate 1 happy face extra for each 20% culture).

 

[Mercade]

The theatre will do the following:

1. If you have a resource of dye (+1 happy) and you have a theatre, then you will get an extra happy from dye (+2 happy), but not from the theatre itself.
2. If you have a theatre, and you have a culture tax of 10% (or more) then you will have 1 happy per 10% culture tax.

So it works correctly. You got a second happy face from the dye, but you won't also get a happy face from the theatre.

This is the same for harbours, markets and groceries. A harbour will cause the health bonus on fish to increase from +1 to +2, but the harbour itself won't generate health.

 

[Megalou]

Thanks. Yes, 10 for making 100 cpt does appear unrealistic.