Tenders Are Invited For Construction Of A Water Reservoir With A Capacity Of Up To 50 M3 Intended For Forest Management Purposes In The Żukowo, Funka And Kopernica Forest Districts - Procedure Ii

The Scope Of Works Related To The Construction Of The Water Reservoir Will Include: • Excavation For The Installation Of The Reservoir, • Construction Of A 25.0 Cm Thick Cement-Sand Foundation, • Delivery And Installation Of A Prefabricated Non-Pressure Steel Tank With An External Diameter Of ~2.5 M And A Length Of ~10.0 M, • Covering The Reservoir With Fine-Grained Sand, • Widening The Forest Road, • Tidying Up The Area Within Investment After Completion Of The Works. The Tank Will Be Placed On A 25.0 Cm Thick Compacted Sand And Cement Base. After Positioning The Tank, It Is Planned To Cover It With Fine-Grained Sand Within A Radius Of Approximately 1.5 M From The Tank Shell In Order To Provide Even Support And Protect The External Coating Against Damage. In The Event Of Cohesive Soils With Limited Permeability, The Tank Should Be Secured Against Buoyancy By Using An Anchoring System In Accordance With The Manufacturers Guidelines, Including Anti-Buoyancy Belts Made Of Tapes With High Mechanical Strength, Anchored In Retaining Slabs Or Anchor Beams. Access To The Designed Facility Is Provided By An Existing Road With A Road Width Of Approximately: 3.5 - 5.0 M (Depending On The Forestry). In The Area Where The Reservoir Is Located, It Is Planned To Widen The Road Locally By 2.5 M (To A Total Width Of 6.0 M), Enabling Safe Access And Maneuvering Of Vehicles Servicing The Facility. The Construction Of New Roads Or Maneuvering Areas Is Not Planned, Apart From The Local Widening Of The Existing Route. In The Area Of ​​Local Road Widening, It Is Planned To Make A Base Course Of Mechanically Stabilized Crushed Aggregate With A Grain Size Of 0-63 Mm, A Thickness Of 15.0 Cm After Compaction. On The Subgrade, Make A Surface Of Mechanically Stabilized Crushed Aggregate With A Grain Size Of 0–31.5 Mm, A Thickness Of 8.0 Cm After Compaction. The Aggregate Used For The Substructure And Pavement Should Meet The Requirements Of Pn-B-01100 And Be Characterized By Sharp-Edged And Irregular Grains. Technical Parameters Of The Tank: • Nominal Capacity: 50.0 M³ • External Diameter: 2.5 M • Length: Approx. 10.0 M (Total Approx. 10.8 M) • Manhole Diameter: 700 Mm • Connection Diameter: Dn100 • Construction: Cylindrical Tank With A Horizontal Axis, Closed With Convex Bottoms, Partially Buried In The Ground • Foundation: On A Cement-Sand Foundation With A Thickness Of 25.0 Cm Surface Protection: • External Surface: Covered With A Polyurethane Coating With High Resistance To Corrosion And Atmospheric Factors, • Internal Surface: Protected With An Epoxy Coating. The Tank Will Be Delivered In The Form Of A Prefabricated Element And Assembled On Site In A Trench On A Prepared Base. The Materials Used For The Construction Of The Substructure And Surface As Well As For The Assembly Of The Tank Must Have Appropriate Certificates And Approvals For Use In Construction. The Works Must Be Performed In Accordance With Applicable Regulations And The Technical Specification Constitut