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882. Measuring Through Walls and Mountains
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Shabbos 28:14 When the surveyors reach a wall, it is not necessary to pierce the wall; rather, it is sufficient to approximate the thickness of the wall and to continue on the other side. However, if people use the wall, then it must be measured exactly. Similarly, if a plumb line can be lowered straight down […]
881. Measuring Ditches and Valleys
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Shabbos 28:12 The previous halacha (about measuring the width of a ditch that is up to 4,000 cubits deep) applies when a plumb line (which measures verticals) can be lowered straight down because in such a case the walls of the ditch cannot be used. However, if a plumb line cannot be lowered straight down, […]
880. Measuring the Techum
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Shabbos 28:10 Regarding those who live in huts, the Shabbos boundary is measured from the entrances to their homes. If there are three courtyards with two houses in each courtyard, they are counted as a single entity. We imagine a square around it and measure 2,000 cubits around it as we do with other cities. […]
879. Oddly-Shaped Cities
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Shabbos 28:8 If a city is longer on one side and shorter on the other (i.e., a trapezoid), we treat it as if both sides were the length of the longer side. If a city is shaped like a crescent or like the letter Gamma (i.e., like the letter L), then if there are fewer than 4,000 […]
878. Square, Round and Triangular Cities
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Shabbos 28:6 If a city is a rectangle or a square, since it has four right angles, we leave it “as is” and simply measure 2,000 cubits in each direction on each of the four sides. If a city is a circle, we imagine that it is surrounded by a square. We then measure 2,000 cubits […]