Tenders Are Invited For Construction Of An Installation For Storing Rainwater As Part Of The Project Titled: Adaptation To Climate Change And Prevention Of Floods And Drought In The Gorzków Commune

4.1. The Subject Of The Investment Is The Construction Of 51 Complete Rainwater Storage Installations, Consisting Of Rainwater Tanks And Accompanying Infrastructure. Plastic Tanks With A Capacity Of 5 M3 And 10 M3 Should Be Made. Above-Ground Tanks Placed On A Concrete Slab, Underground Tanks On A Cement-Sand Base.4.2. As Part Of The Task, Tanks Should Be Made In The Following Variants: 1) Above-Ground Tanks With A Capacity Of 10 M3 – 31 Pcs.2) Above-Ground Tanks With A Capacity Of 5 M3 – 7 Pcs. 3) Underground Tanks With A Capacity Of 2X5 M3 – 12 Pcs.4) Above-Ground Tanks With A Capacity Of 2X5 M3 - 1 Pc. The Scope Of The Planned Investment Includes The Following Industry Works: - Measurement Works, - Earthworks, - Construction Of A Reinforced Concrete Slab For Above-Ground Tanks, - Installation Of Tight Septic Tanks For Rainwater - Construction Of Sewers And Pipelines Supplying Rainwater From The Gutter System To The Tank, - Execution Of Finishing Works. Above-Ground Tanks Should Be Made As Single-Walled, Aboveground Polyethylene Tanks With A Capacity Of 5,000 And 10,000 Liters For Storing And Distributing Rainwater. The Designed Tank Should Be Placed On A Reinforced Concrete Foundation Slab, Which Guarantees Proper Load-Bearing Capacity And Leveling Of The Ground. The Tank Is Equipped With A Drain And Vent Valve, Inspection Hatch, And Emergency Overflow. The Tank Should Have A Second Mesh Filter Installed In The Manhole With The Inlet Connected To The Tank. The Tank Is Placed On A Reinforced Concrete Slab. The Thickness Of The Reinforced Concrete Slab Is 15 Cm, The Slab Is Placed On A Cement-Sand Ballast, Compacted And Level, 25 Cm Thick. Make The Reinforced Concrete Slab In Accordance With The Pn-En 1992-1-1 Standard Design Of Concrete Structures, Part 1-1 General Rules And Rules For Buildings. Underground Polyethylene Tanks With A Capacity Of 5,000 Liters, Used For Storing And Distributing Rainwater. Underground Tanks Should Be Used - They Are Intended For Foundation In The Ground. The Tank Is Equipped With Air Vents, An Inspection Hatch, And An Emergency Overflow. The Tanks Used Must Have A National Technical Assessment Issued By The Building Research Institute In Poland. The Installation Of The Tank Used Should Be Carried Out In Accordance With The Tank Manufacturers Operating Instructions In Order Not To Void The Warranty.