Tenders Are Invited For Reconstruction Of The Agricultural Transport Bridge On The Watercourse On Plot No. 427 On The Municipal Road On Plot No. 849, No. 442 At Km 1+530 In Domaszków In The Design And Build System

1. The Subject Of The Order Is The Implementation Of The Following Investment In The Design And Build System: Reconstruction Of The Agricultural Transport Bridge On The Watercourse On Plot No. 427 On The Municipal Road On Plot No. 849, No. 442 At Km 1+530 In Domaszków.2. The Subject Of The Order Is The Design And Execution Of Works And Includes: Access To The Facility1. Earthworks In The Scope Of Channeling The Road Structure, Demolition Of The Existing And Reconstruction Of Access Roads To The Facility, 10 M Long On Each Side.2. It Is Planned To Dig An Excavation To The Level Of The Watercourse Over A Length Of Min. 4 M, In A Way That Allows Free Access To The Abutments. The Embankment Should Be Made As An Engineering Backfill Made Of Gravel (Or Other Material Meeting The Standard Conditions) And Compacted To A Value Of Id>0.97. The Scope Of Works Is Indicated In The Drawing Part.3. Construction Of The Abutment Cover From Non-Cohesive Material Of The Sand Type, Compacted To Id = 0.97.4. Construction Of Access Surfaces From Crushed Aggregate 0/31.5 Mm, Mechanically Stabilized, Thickness. 30Cm. Abutments: 1. Reinforcing The Existing Concrete Rings. By Installing Steel Bands (Clamps) Made Of Flat Bars With Cross-Section Dimensions Of 100X40mm, Fastened With Tensioning Bolts Of Class Min. 8.8 Type Sb Tzn - M20x90, Hot-Dip Galvanized. The Flat Bar Is Made Of S235 Steel With Anti-Corrosion Paint (2 Coats Of Painting). Make 2 Levels Of Clamps At 1/3 And 2/3 Of The Height Of Each Concrete Ring.2. Glue Cracks And Cracks In Concrete Rings Using Epoxy Resin Injections.3. Behind The Abutment On A Bench Made Of C12/15 Class Concrete Base, Thickness. Min. 15 Cm Along The Span Width, Make A Retaining Wall Of Gabions In Accordance With The Drawing. Fill The Space Between The Retaining Wall And The Span With A Polystyrene Insert. Gabion Baskets Should Be Made As Cages With Transverse Dimensions Of 0.5 X 0.5 M, Made Of Wire Ø Min. 4.8Mm Hot-Dip Galvanized. It Is Possible To Make Cages With Other Dimension Modules. Retaining Wall Height Min. 1.5 M (The Final Height Of The Retaining Wall Will Be Determined By The Contractor In The Design Documentation)4. Protect The Base Of The Wall Against Washing Away With Reinforcements Made Of Field Stone And Cement-Sand Mortar. Make A Concrete Cap On The Upper Surface Of The Wall. 15Cm Made Of C16/20 Class Concrete. Span: 1. Due To The Damaged Crossbeam On The North Side, It Is Recommended To Replace It With A New One. Use Temporary Support For The Span During The Replacement. The New Crossbeam Should Be Made Of Prefabricated Reinforced Concrete With Min. Class Concrete. C30/37. It Is Allowed To Use Other Materials Or Strengthen The Existing Cross Member With The Consent Of The Ordering Party. 2. Verify The Position Of The Span In Relation To The Abutments (Axiality And Perpendicularity) And Correct Its Setting Using Hydraulic Cylinders Or A Crane. 3. Repair Concrete Defects Using Pcc System Mortars. 4. Make A New Railing Beam