(Temporary Ohel) Important shailos which come up in conjunction with "Temporary Ohel" (Temporary roofing, temporary shelter);
הכנה ליום אחר (Preparations for a Weekday): Washing Dishes on Shabbos for Sunday. Releasing a Halachic Vow (הַתָּרַת נְדָרִים);
(Melting ice.) spreading sand on icy stairs or walkway;