construction work./ water and sewage networks in the central area of constanța./the execution activities for the works contract: "water and sewerage networks in the central area of constanța"-cl 3a, are grouped on the following s: ob.1. rehabilitation of the water distribution network - o rehabilitation by replacing the distribution network – 3,339 ml - o new valve chambers - 36 pcs - o branch pipes - 3,070 ml - o branches -335 pcs - o branch fireplaces -276 pcs - o counters with remote reading -334 pcs - o underground / aboveground hydrants - 33 pcs - ob.2. sewage network extension - o household sewage network extension - 173 ml, o visiting dormitories - 7 pcs o connections - 28 pcs - connection fireplaces - 28 pcs - ob.3. sewage network rehabilitation - o rehabilitation by replacing the household sewage network - 1,839 ml - o visiting dormitories - 59 pcs - o connections - 201 pcs - o connection fireplaces - 201 pcs - ob.4. features - o handheld terminal with battery for reading water meters - 1 pc - the works refer to: a) construction works - b) supply and installation of machinery and technological equipment c) testing and commissioning - d) monitoring and providing assistance/consultation to the responsible personnel during the warranty period, when necessary e) fixing any defects that appeared during the 36-month, respectively 1095-day warranty period the duration provided in section ii.2.7 represents the period of execution of the works and does not include the 1095-day warranty period the number of days until which the interested economic operators can request clarifications before the deadline for submission of offers / candidacies is 19 days before the deadline for submission of offers. the contracting entity shall respond clearly and fully to all requests for clarification / additional information as follows: • 25 days before the bid submission deadline for clarification requests submitted 34 days before the bid submission deadline; • 11 days before the bid submission deadline for clarification requests submitted 19 days before the bid submission deadline.