Side base - gawadodai

...Split foundations are often used for boulder foundations, where stones are placed under the pillars, while round foundations are used for slab foundations made of concrete or ground cover stones, and are fastened to the foundation with anchor bolts. Those inside the building are called partition foundations, and those around the outside are called side foundations. Foundations are prone to rot due to moisture from the ground and wind and rain from outside, so they are placed on the foundation at a height that avoids moisture as much as possible, with the bottom end coated with a preservative. ...

*Some of the terminology explanations that mention "side foundation" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…割り土台は柱下に石を据える玉石基礎に多く，丸土台はコンクリートや地覆石などの布基礎に用いられ，アンカーボルトで基礎と緊結される。建物の内部のものは間仕切り土台，外回りは側（がわ）土台という。土台は地面の湿気や外からの風雨を受けて腐りやすいので，なるべく湿気を受けない高さで，その下端に防腐剤を塗って基礎の上に据える。…

※「側土台」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報