Tenders Are Invited For Construction Of A Storm Sewage System With Rainwater Tanks At The Primary School In Sarzyna

1. The Subject Of The Order Is The Execution Of Construction Works Consisting In The Construction Of An External Rainwater Drainage System With Rainwater Tanks As Part Of The Implementation Of The Task Titled: Construction Of A Rainwater Drainage System With Rainwater Tanks At The Primary School In Sarzyna. The Scope Of Construction Works Includes: The Subject Of The Order Is The Execution Of Construction Works Consisting In The Construction Of An External Rainwater Drainage System With Rainwater Tanks At The Primary School In Sarzyna On The Plot No. 2596/1. Rainwater And Meltwater From The Roofs Of The Buildings Of The Primary School In Sarzyna And Partially From The Paved Area Will Be Collected In A Tight Stormwater Drainage System. All Water Will Be Discharged Through The Installation System To Two Septic Tanks With A Capacity Of 50 M3 Each. Parameters Of The Septic Tank: - Internal Width Of The Tank: 6000 Mm - Internal Length Of The Tank: 4500 Mm - Internal Height Of The Tank: 2800 Mm - Tank Wall Thickness: 200 Mm - Inlet/Outlet Pipe Diameter: 315 Mm The Rainwater Drainage System Should Be Installed In A Gravity System Using S-Class Unplasticized Polyvinyl Chloride (Pvc-U) Socket Pipes With A Solid, Homogeneous Wall Structure, With Peripheral Stiffness 8 Kn/M2 (Sn≥8) (Sdr 34, Sn8). In Impassable Places, Subject To Low Pressure, It Is Allowed To Use N-Class Pvc Socket Pipes, With A Solid, Homogeneous Wall Structure, With A Peripheral Stiffness Of Not Less Than 4 Kn/M2, Connected With A Rubber Gasket With A Diameter In Accordance With The Attached Design, With A Slope Of Min. 0.5% Towards The Planned Septic Tanks. The External Electrical Installation Supplying The Float Pumps Should Be Made Using A Yky 5X10mm2 Cable Line, A Protective Pipe Should Be Installed At The Intersection Of The Cable With The Existing Gas Network. Sewage Chambers Are Designed As: - Non-Entry Manholes With A Diameter Of 400 Mm, Made Of Pvc Plastic Dn/Id 400 Mm (Manholes Can Be Made Of Pe Or Pp) With A Through-Base For Cables Sewage Pipes Made Of Smooth-Walled Pipes With An External Diameter In Accordance With The Design, - Non-Manhole Pipes With A Diameter Of 600 Mm, Made Of Pvc Plastic Dn/Id 600 Mm (Manholes Can Be Made Of Pe Or Pp Are Allowed) With A Pass-Through Base For Sewage Pipes Made Of Smooth-Walled Pipes With An External Diameter In Accordance With The Design. Detailed Scope Of Works In Accordance With The Attached Bills Of Quantities And The Developed Design Documentation.2. The Scope Of The Order Also Includes: 1) Preparatory And Measurement Works, 2) Securing The Construction Site, 3) Purchase And Delivery Of Materials Necessary To Complete The Task, 4) Tidying Up The Construction Site, 5) Preparing An As-Built Geodetic Inventory.3. Other Obligations And Costs Of The Contractor The Scope Of The Contractors Obligations And Costs Also Includes: 1) Preparation Of A Safety And Health Protection Plan Before The Commencement Of Construction, 2) Marking Of The Work