Force barriers, such as Wall of Force and Forcecage, are immobile and invisible, but nowhere in the description of the many magical force spells and magical items does it say that those force barriers are invincible and cannot be destroyed. Because they're not explicitly invincible, it may be possible that they can be broken manually, no Disintegrate spell required, which I'm sure every barbarian with a siege weapon would love to hear. Perhaps it's not intended that they are destructible, as otherwise they'd have stats that would demonstrate that it is possible to destroy it, but maybe they didn't want to have players thinking enemies could just punch their way out. Regardless, there's not a yes or no to whether it can or can't be destroyed in a mundane fashion.
Are there any resources in any book that describe the defensive capability of magical force structures? Has any magical force object been given health and AC in the fashion that structures like castle walls have?
None of the rule books I've read have a variant rule that gives magic walls HP. That doesn't mean a DM can't make them have an HP, but it would be a house rule.
Force barriers, such as Wall of Force and Forcecage, are immobile and invisible, but nowhere in the description of the many magical force spells and magical items does it say that those force barriers are invincible and cannot be destroyed. Because they're not explicitly invincible, it may be possible that they can be broken manually, no Disintegrate spell required, which I'm sure every barbarian with a siege weapon would love to hear. Perhaps it's not intended that they are destructible, as otherwise they'd have stats that would demonstrate that it is possible to destroy it, but maybe they didn't want to have players thinking enemies could just punch their way out. Regardless, there's not a yes or no to whether it can or can't be destroyed in a mundane fashion.
Are there any resources in any book that describe the defensive capability of magical force structures? Has any magical force object been given health and AC in the fashion that structures like castle walls have?
None of the rule books I've read have a variant rule that gives magic walls HP. That doesn't mean a DM can't make them have an HP, but it would be a house rule.
Spells do what they say they do. They can only be "broken" in the ways that the spell description says they break, or by spells like dispel magic that can dispel them.