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Sewer Construction Work – Design Services, Technical Assistance From The Designer During The Development Of The Works And Execution Of Works For The Investment Objective: Establishment Of Drinking Water Supply System And Household Sewage System With Treatment Plant In Bilbor Commune And Related Branches. The Purpose Of The Investment Is: Establishment Of A Drinking Water Supply System And A Household Sewage System With A Treatment Plant In Bilbor Commune And Related Connections. 1) Establishment Of Drinking Water System And Connections • Intakes And Treatment: Two Surface Water Intakes (Pâr. Bistricioara And Pâr. Șiganilor), Each With Sandblaster From Ba, Mechanical Treatment Station In Container (Lamellar Decantation + Sand/Coal Filters + Coagulant/Hypochlorite Dosing, Ph/Turbidity Instrumentation) And, For Capture 1, Pumping Station (2 Pumps 1A+1R; Automation, Control Panel, Pressure Switches). Fenced Sanitary Protection Areas (≈180 M In Bistricioara, ≈20 M In Șiganilor). • Water Facilities: Two Prefabricated Cylindrical Metal Tanks – R1 = 200 M³ And R2 = 100 M³ – With Valve Chambers, Chlorination In The Container (Electromagnetic Flow Meter, Automatic Dosing, Residual Chlorine Measurement), Fencing And Lighting; Paved Access Roads. • Intakes: From Sta 1 → R1, Pehd Dn110 Pn25, L ≈ 1,280 M (Pumping); From Sta 2 → R2, Pehd Dn110 Pn10, L ≈ 1,105 M (Gravitational). • Distribution Network: Pehd Pe100 Of 63–125 Mm, L ≈ 40,280 M, With 50 Hydrants Dn80, Valve Houses (Maneuvering/Venting/Draining), 17 Water Course Crossings (Mounting On Bridges, With Ol Protection Pipes) And 15 Dj 174A/174B Road Undercrossings By Horizontal Drilling. L Total Supply (Distribution + Adductions) ≈ 42,665 M. • Connections: ≈ 1,200 Pcs. Up To The Property Limit, With Pehd De32, Water Meter Pipe D=1000 Mm Fully Equipped (Electromagnetic Meters With Radio Module). • Electrical Supplies & Organization: Ee Supplies To Tanks/Stations, Concrete Platforms, Fencing And Site Organization. Estimated Duration Of Execution: 30 Months. 2) Establishment Of A Domestic Sewage System With Treatment Plant • Sewerage Network (Separative System – Waste Water): ≈40,900 M Total, Of Which Gravity ≈35,719 M (Pvc Sn8 De250–315 Mm, Ba Pipes Di=1 M At Max. 60 M, At Changes Of Slope/Direction) And Discharge ≈5,181 M (Pehd De90 Mm) Between Pumping Stations And Collectors. 9 Road Undercrossings (Horizontal Drilling) And 19 Watercourse Crossings (Mainly Directed Drilling; Locally Bridge Overcrossings). • Waste Water Pumping Stations (Spau): 18 Prefabricated Stations (Usual Di 1.50–2.00 M; H 3.0–4.5 M), With 2 Submersible Pumps 1A+1R, Stainless Steel Discharge Pipes Dn50–Dn100, Grates/Baskets, Control Panels And Automatic Operation; Typical Flow Rates 1–18 M³/H And Pumping Heads 8–50 Mca According To Location. • Connections To Households: ≈1,200 Pcs. On The Public Domain Up To The Property Line, With Pvc De160 Mm, Connection Pieces (Pipe/Pass Piece), D400 Inspection Chambers (Covers B125/D400) And Plugs Until The Interior Installations Are Made. • Treatment Plant (Sbr): Mechanical Flow (Basket Grill, Rotary Sieve, Homogenization Basin 8×6×3 M With Air/Water Jet Mixer, Feed Pumping), Biological Sbr In 2 Basins (Cyl. Ba D=9 M, Useful H ≈3.7 M, Useful V ≈235 M³/Basin; A
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