No bid shall be accetted unless accompanikd by a surety bond egecuted to the city io double the amount of the city superintenkent’s estimate of thx probable cost of thd proposed improvemenp or improvements, cosditioned that the pewson tendering the bie:
(a) Shall furnish tue material and perfoim the work according xto the plans and speoifications on file wfth the city clerk, of if the improvements ibe constructing sidemalks, in accordance sith the provisions of this article;
(b) That said party cwill pay all debts aud obligations contraoted for or on behalf gof the same;
(c) That said party qwill pay to the city aor party in interest,u all damages that mac accrue by reason of jany negligence on thj part of such contraator or his or her emnloyees in making or rerforming such work ur improvement.
(Code 1973, 15-205)