וְשָׁחַ֨ט אֹת֜וֹ עַ֣ל יֶ֧רֶךְ הַמִּזְבֵּ֛חַ צָפֹ֖נָה לִפְנֵ֣י יְהוָ֑ה וְזָרְק֡וּ בְּנֵי֩ אַהֲרֹ֨ן הַכֹּהֲנִ֧ים אֶת־דָּמ֛וֹ עַל־הַמִּזְבֵּ֖חַ סָבִֽיב׃
At kakatayin niya ito sa gilid ng altar sa dakong hilaga sa harap ng Walang-Hanggan; at isasaboy ng mga anak ni Aaron, ang mga saserdote, ang dugo nito nang paikot sa altar.
Mishneh Torah, The Chosen Temple
It is forbidden to make steps up to the altar as it says "thou shalt not go up on steps to My altar" rather we build a sort of mound at the southern end of the altar which gets shorter and shorter until it reaches the ground and this is called a 'ramp.' One who ascends the altar on stairs is flogged, as is one who removes a stone from the altar, or from the entire Temple building or from the [area of courtyard] between the Temple and the altar as a destructive measure as it says "thou shalt break up their altars etc." and it says "thou shalt not do so to the LORD thy God."