Tenders Are Invited For Drainage And Renovation Works On Selected Watercourses Of The Lwówek Śląski Catchmen ... in Poland

Work Detail

Part I: A) Task 1 - Unblocking The Bystrek Stream In The Town Of Raszów, B) Task 2 - Unblocking The Bystrek Tributary Stream In The Town Of Raszów, Part 1 - Opening The Bystrek Stream In The Town Of Raszów (Kamienna Góra Commune). The Scope Of This Part Of The Order Includes Maintenance Works In The Scope Of Restoring The Correct Capacity Along With Securing The Slopes Of The Watercourse Within The Commune Of Raszów (Two Sections: At Km 1+480 - 1+580 And At Km 2+360 - 5+220). The Scope Of Works Includes In Particular: 1) Unblocking The Stream Bed By: A) Manual Mowing Of Dense Hard Lichens From Slopes And Embankment Crowns (On A Section Of 2960 M Long) Together With The Removal And Management Of The Mow, B) Raking Out Mown Lichens From Slopes Over 2.0 M Wide Over A Length Of 2960 M Along With Removal And Management Of The Obtained Material, C) Manual Removal Of Silt And Sediments From The Stream Bed With A Depth Of Up To 1.5 M And A Bottom Width Of 1.0 - 1.5 M, With An Estimated Thickness Of The Silt Layer Of 0.20 M, On A Section Of 300 M In Length Along With The Management Of The Collected Sediments, D) Mechanical Removal Of Silt And Sediments From The Stream Bed With A Depth Of Up To 2.0 M And A Bottom Width Of 1.5 – 2.0 M, With An Estimated Thickness Of The Silt Layer Of 0.3 – 0.5 M On A Section Of 900 Meters In Length, Including The Management Of The Collected Sediments, E) Bank Slopes With An Assumed Collection Thickness Of Up To 0.2 M And A Slope Height Of Up To 1.5 M On A Section Of 1,800 Meters In Length, Along With The Management Of The Material From The Slopes, F) Manual Cutting Of Bushes And Undergrowth, Self-Seeded Trees And Trees With A Diameter Not Exceeding 25 Cm, Measured At A Height Of 5 Cm, On An Area Of 2000 M2, Including The Removal And Management Of The Material From The Felling, G) Grubbing Up The Root Of A Tree With A Diameter Of 46 - 55 Cm (Brittle Willow - 1 Pc.), Along With The Removal And Management Of The Grubbing Material, H) Grubbing Up The Roots Of Trees With A Diameter Of Up To 35 Cm (20 Pcs.) With Export And Management Of Material From Clearing, I) Removal Of Fallen Trees With A Diameter Of 46 - 55 Cm (Brittle Willow - 1 Pc.) With Removal And Management Of Material (Wood), J) Removal Of Blockages From The Stream Bed (Wood, Common Wood) With Management Of Material (18.0 M3), 2) Protection Of Stream Slopes Against Washing Out: A) Reconstruction Of Stream Bank Reinforcements Made Of Openwork Jomb Concrete Slabs With Dimensions Of 90 X 60 X 10 Cm, Using Material From The Stream Bed (10 Slabs - 5.4 M2) And Material Purchased By The Contractor (15 Slabs - 8.1 M2), 3) Blast Cleaning Of Vertical Surfaces And Inclined Retaining Walls (300 M2). Part 2 - Unblocking The Stream Bystrka Tributary In M. Raszów, The Scope Of This Part Of The Order Includes Maintenance Works In The Scope Of Restoring The Correct Capacity Along With Securing The Slopes Of The Watercourse Within The Commune Of Raszów (Section: At Km 0+000 - 0+980). T

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