*Blood from newly slaughtered animals was sprinkled either above or below the bright red line (the chut hasikra) painted half-way up the mizbayach's side.
*Entrails were often burned on one of the three wood piles on the roof.
*Offerings of wine and water were poured down one of the two drains built on the south west corner of the roof.
*meal offerings (menachos) were brought to the side of the mizbayach to receive their kedusha.
*Those sacrifices whose halacha dictated they be
burned in their entirety were placed on the fires of
this mizbayach.
*Even the ashes from the fires were packed into a ball in the middle of the roof.
Just a quick rundown. From floor level
to the height of one amah was the base of the mizbayach (called the yesod).
The yesod was not a perfect square as a strip one amah thick on the south
and east sides was left out.
From above the yesod until the height of six
amos was the sovev (lit. "surround"). The top of the sovev was an
amah wider in every direction than the level above it, so it formed a walking
ledge. It was below this ledge that the red chut hasikra was drawn
to separate between blood that had to be thrown "above" and blood thrown
"below."
The final section was the maracha (top - lit.
"arrangement"). It was three amos high for the most part. At
the corners were one amah cubes called the keranos (corners; what else?).
From the mizbayach to the antechamber of the
hearth - a space taken up largely with stairs
- the Mishna tells us were 22 amos from east to west...