C.R.S. § 30-15-404: Majority must vote for ordinances - proving ordinances.

All ordinances shall require for their passage or adoption the concurrence of a majority of the board of county commissioners. All ordinances may be proven by the seal of the county, and, when printed in book or pamphlet form and purporting to be printed and published by authority of the county, the same shall be received in evidence in all courts and places without further proof.