If any mem­ber requires it, the “Yeas” and “Nays” upon any ques­tion shall be tak­en and entered in the min­utes, but the yeas and nays shall not be tak­en unless called for pri­or to any vote on the ques­tions. When the Clerk has com­menced to call the roll for the tak­ing of a vote of yeas and nays, all debate on the ques­tion before the Board shall be deemed con­clud­ed, and dur­ing the tak­ing of the vote, no mem­ber shall be per­mit­ted to explain his vote, but shall respond to the call­ing of his name by answer­ing of yea or nay, as the case may be.