Tenders Are Invited For Construction Work For Electricity Power Lines – L220 110-Kv-Ltg. Freienbach - Siebnen, Cable Pipe Block

Construction Work For Electricity Power Lines – L220 110-Kv-Ltg. Freienbach - Siebnen, Cable Pipe Block. 1.1 Introduction Axpo Grid Ag Operates A Supra-Regional Distribution Network In The “Zürichsee Süd” Area. By Converting The Existing Freienbach – Siebnen Overhead Line (L220) From 50 Kv To 110 Kv, The Conditions Are Being Created For A Voltage Change In The “Zurichsee Süd” Region. This Serves To Ensure Long-Term Security Of Supply Of Electrical Energy Throughout Northeastern Switzerland. The Existing Overhead Line Between The Freienbach And Siebnen Substations From The Waldegg In Freienbach And The Wiler Äbnet In Altendorf Will Be Buried. Axpo Intends To Wire The Existing 16 Or 50 Kv Overhead Line Between The M57 To M83 Masts With A Single Strand And Between The M83 Mast And The M115 Mast With Two Strands. The Majority Of The Approximately 8.2 Km Long Pipeline Section Is To Be Laid Underground In Open Trenches, Supplemented By Ramming And Flushing Drilling. All Planned Measures (Cable Pipe Routes, Crossings Under Bodies Of Water And Modes Of Transport) Are Included In The Planning Documents For The Submission. The Dismantling Of The Existing Overhead Line Is Not The Subject Of This Submission. The Work Is Accompanied By Environmental Construction Supervision (Ubb) And Soil Science Construction Supervision (Bbb). The Relevant Requirements Are Taken Into Account In The Submission Documents And Can Be Found In Detail In The Relevant Environmental Note For The Project. 1.2 Initial Situation / Project Description The Tendered Services Include The Following Main Work: Lot 1: * Concrete Cable Pipe Block, 1 Strand, Length Approx. 3,100 Km * Concrete Cable Pipe Block, 2 Strands, Length Approx. 0,450 Km * 7 Socket Shafts, 1 Bridle Shaft * Press Advance To Cross The Sbb Pressure Line (Km 4,450) * Installation And Development Work * Create And Dismantling Of Construction And Transport Runways * Excavation And Covering Work * Delivery, Laying And Concreting Of Cable Protection Pipes * Shelling And Concreting Of Socket Shafts * Crossing Under Rivers * Crossing Under Culverted Streams And Spring Feed Pipes * Relocating Prefabricated Shafts * Digging And Concreting Work In Cultivated Land * Repairs In Cultivated Land * Work In The Area Of Overhead Lines * Work In And Along Roads And Waterways * Connection To 3 Flushing Boreholes: - Flushing Borehole 1A, Shooting Range (Approx. Km 0.020 - 0.200) - Flushing Borehole 1B, Along The Motorway (Approx. Km 0.850 - 1,600) - Flushing Borehole 1, Silberbach, Lüsibach (Approx. Km 3,600 - 3,800) (Flushing Boreholes Are Not Part Of This Tender) Lot 2: * Concrete Cable Pipe Block, 2 Strands, Length Approx. 3,300 Km * 3 Socket Shafts, 1 Pipe Shaft * 2 Mast Foundations * Installation And Development Work * Creation And Dismantling Of Construction And Transport Runways * Excavation And Covering Work * Delivery, Laying And Concreting Of Cable Protection Pipes * Shelling And Concreting Of Socket Shafts * Crossing Under Rivers * Crossing Under Bulging Streams And Spring Feeders * Moving Prefabricated Sch