Greetings,

in describing the TANUR in full REVIEW: http://dafyomi.co.il/bbasra/review/bb-rg-020.htm?q=0 YOU MENTIONED IN 9 , 1 a)

9)

(a)When building a Tanur into the ground of his ground-floor apartment, Reuven is obligated to leave a space of - four Amos.

(b)The cement that serves as the base of Shimon (the owner of the upstairs apartment)'s oven, if he is building ...

1. ... a Tanur (a single rhombus-shaped oven), has to be three Tefachim thick.

A RHOMBUS is a parallelogram with EQUAL sides (including a square). A TANUR, would be better described as a trapezoid, which only has ONE SET OF parallel sides ...which allows for the cone-shaped Tanur of yesteryear.

Hatzlacha and THANKS FOR THIS AMAZING TOOL....YOUR SITE!

Rafael Aryeh, Ramat Bet Shemesh-Aleph