What is the reason a valley deeper than 2,000 cubits requires measurement of the entire slope even when the plumb line diverges?
Synopsis
A valley whose depth exceeds 2,000 cubits (the techum limit) is treated as its own separate region and must be measured as flat ground along its full slope.
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What type and length of rope must be used when measuring the Shabbos limit (techum)?
4 opinions
How does the measurer handle a river that interrupts the measurement of the Shabbos techum?
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At what height on the body must each person hold the measuring rope, and how tightly must it be stretched?
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Must the techum always be measured directly opposite the city, even when terrain obstacles make measurement difficult?
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How is a steep hill (one whose plumb line does not diverge 4 cubits at the base) treated during techum measurement?
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How is a moderately steep hill (rising 10 handbreadths in 5 cubits) measured for the techum?
3 opinions across 3 eras
When a hill that rises 10 handbreadths in 4 cubits cannot be spanned in 50 cubits, may it be measured by estimation alone (omdan) or must the 4-cubit rope kidor method be used?
2 opinions
How is a valley measured for the techum — does the rule differ depending on whether the plumb line diverges 4 cubits?
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Does a slope rising ten tefachim within four cubits eliminate the need for a corrective arrangement on the fourth side?
Valid Cross-Beam Materials
May one carry objects throughout the entire Shabbat-day enclosed field (including beyond his 2,000-cubit techum) by throwing, even though he cannot walk there?
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If the person is in a field with a building whose partitions existed before Shabbat, and that building is more than 2,000 cubits from where he spent Shabbat, may he walk throughout the building?
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If a person's 2000-cubit eruv measurement ends in the middle of a city, may he walk through the entire city?
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When a person's eruv measurement exactly reaches or exits the end of a city, does the entire city count as four cubits, allowing him to complete his full 2000-cubit measure beyond the city?
Bathing on Yom Tov
If the eruv measurement ends at the end of a city and the whole city counts as four cubits, may the person walk the full width of the city and receive 2000 cubits north and south beyond the city even if the city is wider than his normal four-cubit corridor?
Bathing on Yom Tov
Discussion
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