הכנה לחול (Preparations for a Weekday): Is There a Limit to the Amount of Exertion Used When Doing the Action?;
Understanding the Concept of טירחא יתירה (Excessive Tircha, Major Exertion) on Shabbos;
putting down items on the ground in a slippery area. Raising and lowering a chair, fan, etc. Putting down sand in a slippery area;