If a character triggers Thunderclap at the west end of Cragmaw Castle with the sound carrying "up to 100 feet" is the whole castle now on alert? I'm thinking some of the intervening walls will reduce the distance the sound is heard, but I can't locate any rules about this. Walls are described as either 1 foot thick or 5 feet thick.
Wouldn't that reduce how far the Thunderclap could be heard? By how much?
Yes, the castle walls will dampen the sound. There are no hard rules for this; D&D isn't meant to be a physics simulator. How far the sound will carry is going to vary depending on the building material, wall thickness, and whether there's any openings in the room.
It's hard to give a one-size-fits-all answer for this. At the very least, it's likely the sound will be heard in adjacent rooms.
If a character triggers Thunderclap at the west end of Cragmaw Castle with the sound carrying "up to 100 feet" is the whole castle now on alert? I'm thinking some of the intervening walls will reduce the distance the sound is heard, but I can't locate any rules about this. Walls are described as either 1 foot thick or 5 feet thick.
Wouldn't that reduce how far the Thunderclap could be heard? By how much?
In addition to what InquisitiveCoder said, keep in mind that not everyone is going to think that a clap of thunder is anything but a clap of thunder, particularly those further away from the source. They might just think it was close, particularly if it's raining outside.
If a character triggers Thunderclap at the west end of Cragmaw Castle with the sound carrying "up to 100 feet" is the whole castle now on alert? I'm thinking some of the intervening walls will reduce the distance the sound is heard, but I can't locate any rules about this. Walls are described as either 1 foot thick or 5 feet thick.
Wouldn't that reduce how far the Thunderclap could be heard? By how much?
Yes, the castle walls will dampen the sound. There are no hard rules for this; D&D isn't meant to be a physics simulator. How far the sound will carry is going to vary depending on the building material, wall thickness, and whether there's any openings in the room.
It's hard to give a one-size-fits-all answer for this. At the very least, it's likely the sound will be heard in adjacent rooms.
The Forum Infestation (TM)
In addition to what InquisitiveCoder said, keep in mind that not everyone is going to think that a clap of thunder is anything but a clap of thunder, particularly those further away from the source. They might just think it was close, particularly if it's raining outside.
Thanks for the responses. I'm looking around for the really simple weather chart i found a couple of weeks ago but i've lost track of it.