Section 64. The party designated for that duty, having carried into effect the decision made under section fifty-nine, may recover in contract from any other party the proportion awarded to be paid by such other party, with interest; and if the party so designated unreasonably fails to carry the decision into effect, any other party affected by such failure may proceed to do it, and may recover in contract from each or all of the others the proportion awarded to be paid by them, and from the party so failing all charges, expenses and costs occasioned thereby.