The Altar was thirty-two [amos] by thirty-two [amos]. [It] ascended one amah and went inward one amah; this [tier] was the base. It is found [to be] thirty by thirty [amos]. [It] ascended five [amos] and went inward one amah; this [tier] was the ledge. It is found [to be] twenty-eight by twenty-eight [amos]. The space for the horns [measured] an amah on this [side] and an amah on this [side]. It is found [to be] twenty-six by twenty-six [amos]. The space where the feet of the Kohanim walked [measured] an amah on this [side] and an amah on this [side]. It is found [to be] twenty-four by twenty-four [amos]; [this is] the space for the pyre.  R’ Yose said: Originally [the Altar] was only twenty-eight by twenty-eight [amos]; it narrowed and ascended in this same manner until it is found [that] the space for the pyre [measured only] twenty by twenty [amos]. But when the exiles ascended, they added to [the Altar] four amos on the south and four amos on the west in the shape of a gamma, as it is stated (Ezekiel 43:16): “And the hearth area is twelve [amos] long by twelve wide, square.” It might be [thought] that [the space for the pyre] was only twelve by twelve [amos]. When [the verse] states ”for its four quadrants,” it teaches that it is from the centerpoint [of the Altar] that [the verse] is measuring twelve amos in each direction.  And a line of red encircled [the Altar] at the halfway point [of its height], to separate between the upper bloods and the lower bloods. And the base traversed the entire north side and the entire west side [of the Altar], and consumes one amah in the south and one amah in the east.