Replacement construction of the Steinhavel barrage - Lot 3 "Lock, weir, fish pass and boat drag".

The WNA Berlin is planning to replace the lock, to adapt the outer harbor, to replace the weir, to build a new access road including a crossing structure, to build a fish pass and to build a slope to overcome the gradient for muscle-powered sports boats.

The construction of the project is divided into three lots:

Lot 1: access including culvert structure

Lot 2: outer ports

Lot 3: lock, weir, FAA, boat tow and ancillary systems

The construction of the culvert structure, the access road during the construction period and the associated landscape protection and landscape construction measures (Lot 1) were accepted in September 2020.

The construction of the outer harbors, the recreational craft waiting areas, the bank protection and the associated landscape protection and landscaping measures (lot 2) were awarded in July 2020 and are expected to be completed in May 2021.

The construction of the lock, the weir, the fish pass, the boat drag and the ancillary systems as well as the associated landscape protection and landscaping measures are the subject of this tender document, lot 3.

The lock and the sheet piling of the boat tow will be built in parallel. In order to carry out this work in the planned time frame from 09/2021 to 05/2022, 3 drilling and insertion devices are required in parallel.

The weir can only be erected after the lock has been completed.

Main construction work to be carried out:

General

- technical processing, implementation planning and creation of inventory documents

- Set up, maintain, operate and clear the construction site

- Establish the electrical system

Landscape maintenance work

- preliminary work (construction site clearance)

- vegetation engineering work

- Tree protection

- Protection of species (amphibian protection - length 400 m, deterring breeding birds)

- Collection of large mussels

Manufacture of a fish pass

- approx. 350 m 3 Demolition work on concrete / masonry

- approx. 270 m 2 Pull steel sheet piling

- deliver approx. 650 t steel sheet piles

- Approx. 5,500 m of loosening and replacement drilling

- approx. 3 350 m 2 Bring in steel sheet piling

- approx. 970 m 3 Paving underwater concrete (C 20/25)

- approx. 630 m 3 Paving unreinforced concrete (C 25/30)

- approx. 42 m 3 Manufacture of reinforced concrete (C35 / 45)

- Manufacture and install 76 precast concrete parts

- approx. 4,500 m 3 Establish and dismantle defensive arm filling (gravel sand)

- approx. 2,700 m 2 Create gravel base course and dismantle the working level

- approx. 1,250 m 3 Excavation excavation dry

- approx. 2,370 m 3 Excavation of excavation dredging

- approx. 650 m 2 Base substrate made of armourstones at least 30 cm thick

- Manufacture and dismantle approx. 85 t of steel construction pit reinforcement

- close approx. 80 t sheet pile wall valleys (fish passage inside)

- Manufacture and assemble 225 m spar chord (welded)

- Manufacture and install 13 t scraper strips in 2 layers

- Manufacture and assemble approx. 210 m of sliding strips PE-UHMW

- Approx. 21 t of steel access and service walkways, including coating

- Manufacture and assemble approx. 365 m of welded steel railings

- Delivery and assembly of the inlet contactor

- Delivery and assembly of the pillar jib crane (reach 4.0 m / 1.0 t)

- Delivery and assembly of floating beams (stainless steel)

- 2 stop log locks (aluminum) for fish pass

Production of weir systems

- approx. 200 m 3 Demolition work reinforced concrete

- Remove / dispose of hydraulic steel components

- approx. 150 m 3 Structural demolition by hand

- approx. 120 m 2 Demolition of area protection under water

- approx. 1,100 m 2 Create the cut pile wall (Du75-85)

- Manufacture and install approx. 65 t reinforcing steel for bored piles

- Manufacture approx. 25 t of chords and stiffeners from steel

- Make approx. 36 pressed micropiles (tension pile, 360 kN)

- approx. 400 m 3 Paving underwater concrete (C 20/25)

- approx. 200 m 3 Paving unreinforced concrete (C 25/30)

- approx. 660 m 3 Manufacture reinforced concrete in formwork (C35 / 45)

- Install approx. 145 t reinforcing steel bars (B500B)

- approx. 155 pieces of precast concrete parts for sheet pile wall cladding

- 2 pieces of drive unit weir flap (electric lifting cylinder)

- 2 closing flaps weir system (5.5 t)

- approx. 13 t steel construction (fixed parts and bars)

- Manufacture and assemble approx. 65 m of welded steel railings

- approx. 650 m 3 Excavation excavation dry

- approx. 1,500 m 3 Excavation of excavation dredging

- approx. 670 m 2 Filling of armourstones at least 50 cm thick

Manufacture of lock systems

- approx. 1,450 m 3 Demolition work concrete and reinforced concrete

- Remove / dispose of old lock gates

- approx. 260 m 2 Pull steel sheet piling

- Deliver approx. 570 t of steel sheet piles

- approx. 4,800 m loosening and replacement boreholes

- approx. 3,800 m 2 Bring in steel sheet piling

- Manufacture approx. 70 t of chords and stiffeners from steel

- make approx. 170 pieces of pressed micropile (tension pile)

- Make approx. 14 permanent grout anchors (chamber anchors)

- Make approx. 15 permanent round steel anchors (chamber anchoring)

- approx. 1,000 m 3 Paving underwater concrete (C 20/25)

- approx. 400 m 2 Install blinding layer (C12 / 15)

- approx. 1,300 m 3 Manufacture reinforced concrete in formwork, C35 / 45

- Install approx. 310 t reinforcing steel bars (B500B)

- approx. 440 m 2 Precast concrete parts for the sluice floor

- 8 drive units for lock gates (electric lifting cylinders)

- 2 mitred gates of the lock system (2-leaf)

- approx. 17 t steel construction (fixed parts and bars)

- approx. 58 lock equipment (bollards, ladders, handrails)

- Make approx. 176 m sheet pile wall spar from steel

- approx. 3,500 m 3 Excavation excavation dry

- approx. 4,300 m 3 Excavation of excavation dredging

- approx. 650 m 2 Filling of armourstones at least 50 cm thick

Manufacture of boat tow

- approx. 230 m 3 Demolition of concrete and masonry

- Extend the old weir system (free ark)

- Deliver approx. 390 t of steel sheet piles

- Approx. 3,800 m of loosening and replacement boreholes

- approx. 2,700 m 2 Bring in steel sheet piling

- Make approx. 255 m sheet pile wall spar from steel

- Approx. 105 m of precast concrete parts for boat tow

- temporary weir system (during construction)

Production of company buildings (turnkey)

- Base area 7.40 x 13.10 m

- approx. 100 m 2 Concrete work floor slab and foundations

- approx. 175 m 2 Masonry and plastering work

- approx. 160 m 2 Roofing work (hipped roof with beaver tail covering)

- approx. 280 m 2 Carpentry work, drywall work

- approx. 180 m 2 Painting work

Manufacture of auxiliary systems

- approx. 1,000 m 2 Outdoor paving work

- 19 foundation piles for crane parking spaces

- approx. 280 m 2 Reinforced concrete slab crane parking areas

- approx. 1000 m 2 Pavement work on access roads (natural stone paving)

- Approx. 500 m of wire mesh fence (height 1.80 m).