Jewish Symbolism. (The Collected Writings of Rabbi Samson Raphael Hirsch; Volume 3)

From Amazon book is an excellent mix of both practical halacha and the sources and development of that halacha. Having built an Eruv for my community starting with this book, I can tell you that I was NEVER surprised at the rulings of the supervising rabbi on questionable parts, nor was I ever unprepared for any question on why & how I handled problems.The best English book on eruvin. This is, without a doubt, the best single halakhic book written about eruvin in English. Rabbi Bechofer goes through all of the halachot relevant to a modern eruv in a modern area. He walks the reader through the sources and development of the laws, and the book includes a lot of pictures and diagrams. If you want to understand the rather complex issues surrounding eruvin, this is the book for you.

Rabbi Yosef Gavriel Bechhofer is a Rebbe at the Mesivta of Yeshivas Rabbeinu Yitzchok Elchonon (commonly known as MTA) in Manhattan, and a frequent Maggid Shiur at Yeshivas Ohr Somayach in Monsey. Rabbi Bechhofer is the author of one of the most popular tracts on the subject of metropolitan eruvin, and serves as a consultant to communities across the continent, facilitating the building and maintenance of urban and suburban eruvin. He is also an editor at Artscroll/Mesorah Publications, most recently involved with the Daily Dose project. Rabbi Bechhofer has served as a Rav, Rebbe and Rosh Kollel in the Chicago and New York areas. Rabbi Bechhofer is one of the few individuals to have served as Maggid Shiur for both Daf Yomi Bavli and Daf Yomi Yerushalmi, completing both. He is also a senior lecturer for the Aishdas Society, an association devoted to more profound understanding and experience of all aspects of Talmud Torah and Avodas Hashem. He has served as a guest Maggid Shiur, scholar in residence, and lecturer in numerous venues, including Alberta, Georgia, Illinois, Indiana, Michigan, Minnesota, Missouri, Montana, Ohio, Ontario, New Jersey, New York, Tennessee, Washington, Wisconsin, Israel and England. He is a prolific author. He has published many essays in major Orthodox Jewish periodicals. His published seforim are: The Contemporary Eruv: Eruvin in Modern Metropolitan Areas, Bigdei Shesh on Bava Basra, and Bigdei Shesh on Sefer Shoftim. Well over one thousand tapes of his lectures and shiurim (including the entire Yerushalmi) are available on tape and online (see aishdas.org/rygb).