Keranot

The four horns at the corners of the altar top, one amah by one amah, hollow. The blood of the chatat is placed on them, once on each of the four. Beyond them, toward the center, one amah where the kohanim walk, then the place of the fire.

Dimensions

• one amah by one amah, at the four corners of the top
• hollow
• height: one amah in the model; five tefachim according to the Rambam
• walls a quarter amah thick (choice)

Sources

• Middot 3:1“מְקוֹם הַקְּרָנוֹת אַמָּה מִזֶּה וְאַמָּה מִזֶּה”
• Rambam, Hilchot Beit HaBechirah 2:8“גֹּבַהּ כָּל קֶרֶן וְקֶרֶן חֲמִשָּׁה טְפָחִים. וְרִבּוּעַ כָּל קֶרֶן אַמָּה עַל אַמָּה. וְאַרְבַּע הַקְּרָנוֹת חֲלוּלוֹת הָיוּ מִתּוֹכָן”
• Rambam, Hilchot Beit HaBechirah 2:16“וְיִשָּׁאֲרוּ הַקְּרָנוֹת חֲלוּלִין”
• Zevachim 5:3“וְדָמָן טָעוּן אַרְבַּע מַתָּנוֹת עַל אַרְבַּע קְרָנוֹת… שְׁיָרֵי הַדָּם הָיָה שׁוֹפֵךְ עַל יְסוֹד דְּרוֹמִי”

Project decisionChoices of the tour: the horns rise one amah and their walls are a quarter amah thick. The Rambam gives them five tefachim of height (Beit HaBechirah 2:8); the tour has not yet decided between that figure and the model's amah.