"Brick your iPad" is a term often [and improperly] used by people who don't know better. Unless there is a hardware fault on the iPad (which is very, very rare). You cannot brick the iPad (or any iDevice, for that matter).
Bricking a device means you've mucked it up so much that you can no longer get it working or running. It is completely dead. Hence, the term 'brick" as that is what it is, an inert lump of metal and plastic that will never work again.
The reason you can't "brick" an iDevice is because Apple has developed the DFU (Device Firmware Update) mode for them. DFU mode is a state that you can put your iDevice into where it can interface with iTunes but does not load the device's operating system or boot loader. So, it's as if it's in an initial "waiting" mode - waiting for iTunes to tell it what to do.
This means that you can always install a "fresh" iOS on the device using iTunes. iTunes will recognize an iDevice in DFU mode and will prompt you to enter recovery. If you accept the prompt, you will given the chance to load a fresh iOS on it. This will put your iDevice back to a fresh, out-of-the-box state with the most current iOS.
Since this is at the initial level, nothing loads on the iDevice that may have caused it to be unresponsive. So, while an iDevice can be messed up so much that is requires a "restore" (what you do when you follow through with the DFU mode), it cannot be 'bricked."
Hope that clarifies things.
Marilyn