Orach Chaim 406:1-408:1 - Techumin: Permitted Cases to Leave the Techum; Placing Eruv Techumin and Acquiring Residence to Extend One’s Techum
Orach Chaim 401:1-404:1 - Techumin: Slept Through, Pond Across Two Techumin, Non-Jews Surrounded, Above 10 Tefachim
Orach Chaim 399:4-400:1 - Techumin: Measuring - Hills, Valleys, Experts, Diagonals, Witnesses, Unwitting Inclusion
Orach Chaim 397:12-398:5 - Techumin: One’s Possessions Outside the Techum; How to Calculate 2,000 Amos
Orach Chaim 394:1-396:2 - Eruvin: Doubts in the Bread; Locked or Lost Bread; The Blessing; Techumin; How to Calculate Four Amos
Orach Chaim 382:14-384:2 - Eruvin: Renting from a Non-Jewish Neighbor; If Out of Town or If Only a Temporary Resident
Orach Chaim 380:3-381:7 - Eruvin: Giving Up One’s Portion of the Courtyard, Before or During Shabbos