Eruvin Chart #1
Eruvin Daf 2a, (copied from Shabbos Chart #2)
THE FOUR DOMAINS OF SHABBOS
(A) THE HEIGHT OR DEPTH |
(B) THE WIDTH |
(C) CARRYING FOUR AMOS WITHIN THE AREA |
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1 | RESHUS HA'RABIM | --- | --- | Chayav |
2 | RESHUS HA'YACHID | 10 Tefachim | 4X4 Tefachim (1) | Permitted |
3 | KARMELIS: | |||
(A) A POLE IN RESHUS HA'RABIM | Under 10 Tef. | 4X4 Tefachim | Patur, but prohibited | |
(B) VALLEY (2) | Under 10 Tef. | --- | Patur, but prohibited | |
4 | MEKOM PETUR: | |||
(A) A POLE IN RESHUS HA'RABIM | Anything other than exactly 9 Tefachim (3) | Less than 4X4 Tefachim | Permitted | |
(B) 10 TEF. ABOVE RESHUS HA'RABIM | Higher than 10 Tefachim from the ground of Reshus ha'Rabim | --- | Permitted |
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FOOTNOTES:
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(1) Even 100 X 3.9 Tefachim is considered a Mekom Petur (RAMBAM, Hilchos Shabbos 14:7).
(2) This applies also to all areas of public thoroughfare that are not 16 Amos wide, or to areas of a public thoroughfare that are had to access (such as a "Keren Zavis"). There is also another type of Karmelis which is really a Reshus ha'Yachid, mid'Oraisa, but the Rabanan decreed that carrying four Amos in it is forbidden, as well as carrying from it to another Reshus ha'Yachid. This is a Karpaf (an open valley) that was fenced-in but not for the sake of residential occupation, and a Mavoy in which no Eruv was made.
(3) See Shabbos Chart #1, footnote #7.