Tenders Are Invited For Modernization Of The Underground Water Supply System In The Complex At Street Węglowa In Białystok, Plot No. 788/11 Rev. 12.

1. The Subject Of The Order Is: Modernization Of The Underground Water Supply System In The Complex At Ul. Węglowa In Białystok, Plot No. 788/11 Rev. 12.2.General Description Of The Existing Condition And The Subject Of The Order: Reconstruction Of Sanitary Installations In The Complex At Ul. Węglowa Is Being Implemented On The Basis Of A Construction Design Called : Construction/Reconstruction Of An Underground Water Supply System, Construction Of An Underground Sanitary Sewage System From 2018 And The Needs Of The Employer. The Planned Works Are A Continuation Of The Works Carried Out In Previous Years With Changes And Additions Introduced By The Ordering Party. The Scope Of The Planned Works Includes: 1) Reconstruction Of The Underground Part Of The Water Supply Installation On Sections W17-W33, W30-W44 And Replacement Of The Water Supply Connection To Building No. 17 (From The W22 Junction To Building No. 17). The Existing Underground Water Supply Installation Is Constructed Made Of Cast Iron Pipes (Main Circuit Installation) That Have Not Been Used For Many Years And Most Likely Made Of Steel Pipes (Water Supply Connection To Building No. 17). The Scope Of Required Works Includes The Construction Of Sections Of The Underground Water Supply System W17-W33, W30-W44 In Accordance With The Design Documentation. New Sections Of The Network Should Be Made Of Pe 100 Polyethylene Pipes And Fittings, Type Rc, For Drinking Water (Resistant To Scratches And Crack Propagation), Connected By Butt Welding Or Using Electrofusion Fittings. The Connection To Building No. 17 Should Be Made On The Section From The W22 Junction To The Connection With The Existing Internal Installation In The Building With A Passage Through Its Wall In A Protective Sleeve. The Installation Is Located Mostly Under The Asphalt Surface On A Stone Base. There Are Road Slabs And Disused Railway Tracks Along Building No. 17. It Is Not Planned To Dismantle The Railway Rails During The Implementation Of The Works2) Construction Of An Underground Sanitary Sewage System On The Section From The Existing S20 Concrete Well To The S24 Well And Replacement Of The Sanitary Sewage Connection To Building No. 17 In Accordance With The Design Documentation. New Sections Of The Underground Sanitary Sewage System Should Be Made Of Solid Pvc Pipes, Diameter 160 Mm, Heavy Type, On A Sand Bed With A Thickness Of 10 Cm Using Tight Concrete Wells Of 1000 Mm Diameter. The Elevations For The Foundation Of The Sewage System Should Be Made In Accordance With The Design Documentation. The Connection To Building No. 17 Is Made Of A Cast Iron Pipe. During The Assembly Works, They Should Be Dismantled And Replaced With Pvc Pipes, Diameter 160 Mm, Heavy Solid Type. Sections Marked On The Land Development Plan - Extract Must Be Replaced Or Installed In New Places.3.A Detailed Description Of The Subject Of The Order Is Included In Annex No. 7 To The Swz, I.E.: 1) Description Of The Subject Of The Order (Opz), 2) Des