Tenders Are Invited For Extension Of The Public Water Supply And Sewage System In The Village Of Borovnice in Czech Republic

Work Detail

The Subject Of The Order Is Construction Work Consisting In The Extension Of The Public Water Supply And Sewage System In The Village Of Borovnice, District Of Borovnice Near Staré Paky. The Connection With The Cap Is Part Of The Public Water Supply And Is Included In The Investment Costs For The Extension Of The Water Supply. The Proposed Public Water Supply Will Be Made By Excavating A Pehd 100Rc2 Sdr11 Ø90 X 8.2 Mm Pipe With A Length Of 120.8 M. The Connection To The Existing Public Water Supply From A Pehd Ø 90 Mm Pipe Will Be Made At The Site Of The Dismantled Existing Underground End Hydrant. The Existing Gate Dn 80 Mm In Front Of The Current Hydrant Will Be Retained As A Sectional Closure Of The Extended Water Supply. The Connection Of The New Pipeline Behind The Gate Valve Is Made Using A Special Hawle Cast Iron Flange No. 0400 Dn 80/90 Mm. The Public Water Main Made Of Polyethylene Pipe Pehd 100Rc2 Sdr11 90 X 8.2 Mm With A Length Of 120.8 M Will Mainly Be Laid In The Southern Part Of The Affected Lands, Viz. Pp. 7,8. The Pipeline Will Be Coiled Or In Rod Design Connected By Electrical Couplings. The Minimum Slope Of The Polyethylene Pipe Will Be 3 ‰. Flange Joints Will Be Connected With Stainless Steel Screws. A Wire For Marking Cyky 4 Mm2 Will Be Placed On The Pipeline, Which Will Be Conductively Connected To The Subsequent Metal Fittings Or Hatches. The Public Water Supply Will End With A Dn 80/80 Mm Cast-Iron Flange Branch, On Which The Designed Underground Hydrant H1 Dn 80 Mm, Serving As An Air Reservoir, Will Be Installed Behind The Gate Valve. In The Straight Direction, The Branch Is Blinded By A Cast-Iron Flange Secured By A Concrete Block. The Pipeline Of The Proposed Water Supply Will Be Laid At A Depth Of Approximately 1.60 M Below Ground Level, Which Will Enable The Requirement To Lay The Proposed Sewerage Deeper Than The Water Supply. The Proposed Sewage System Will Be Made Of 12 Dn/Id 250 Mm (Pvc-U) Pipes With A Total Length Of 115.5 M. In The Future, New Sewer Connections Will Be Connected To The New Branch Of The Io.2 Sewage Sewer, Which Will Drain Sewage Water From The Future And Existing Buildings. The New Sewer Io.2 From The Pvc-U Pipe Dn250 Will Be Connected To The Existing Inspection Shaft S144b On The Existing Sewer S12 Ur Dn 250 Mm (Owner And Manager Of The Municipality Of Borovnice) And Terminated By The Proposed Inspection Shaft S148. Four Inspection Manholes Made Of Ø 1000 Mm Concrete Elements Covered With Cast Iron Hatches Ø 600 Mm With A Frame With Load Class D400 Are Designed For The Sewage System. Surface Rainwater Will Be Treated Individually On Builders Land And Will Not Be Diverted To The Central Sewage Treatment Plant. The Sewage System Is Designed From Smooth-Walled Pvc-U Dn250 Mm Sewer Pipe With A Ring Stiffness > 12 Kn/M2 For Use In Places With High Static Or Dynamic Loads. The Pipes Will Be Connected Watertight Using Sealing Rings, The Length And Slope Of The Pipes Can Be Seen From The Situation Of Construction No. C.3.1 And The Longitudinal Profile Of The Sewer C.4.1. A Detailed Definition Of The Subject Of The Contract And Technical Conditions Are Contained In The Project Documentation And The List Of Works And The Statement Of Dimensions.

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