庭

Outer 广 is the indexing broad-roof radical - a wide roof with a leftward sloping wall, picturing a hall built against a hillside. Marks 庭 as an architectural space, the open courtyard or judicial hall under cover. Same radical family: 店 shop, 庙 temple, 府 mansion, 库 storehouse, 床 bed-frame.

Inner 廷 supplies the sound tíng exactly and adds the original meaning: 廷 was the imperial audience hall where the ruler held court. Combined with the broad-roof radical, the compound specifies the physical courtyard or judicial chamber - the place where the court convenes. So 廷 is phonetic plus semantic boost, not a pure sound loan.