Part A:

In the course of the new construction of the L 70n (bypass around Niedersprockhövel), the State Office for Road Construction NRW, represented by the regional branch in South Westphalia, branch office in Hagen, is planning to build a new rainwater clarifier, including access and ancillary areas, as well as for the final expansion of the first construction phase of the L 70n and the parallel running pavement / bike path the new installation of an asphalt surface course.

Part B:

The city of Sprockhövel is planning to build a new school car park with connecting walkways and bus bay at the Mathilde Anneke School. The expansion takes place between the existing school building, the rain clarifier to be built and the newly built L 70n.

Part A:

New construction of the rainwater clarifier (RKB) with pool overflow and drainage channels DN 200 to DN 250 made of cast iron or DN 400 made of reinforced concrete and the associated shaft structures. Existing and remaining shaft structures have to be adjusted in height to the new heights.

Main dimensions (lxwxd): 31.70 mx 7.00 mx (4.05 m / 4.90 m).

Partially mill off the existing asphalt surface layer of the L 70n and add a new asphalt binder layer and asphalt concrete layer to the superstructure. Establish asphalt pavement for the access and side areas of the RKB. A strip of concrete stone paving is to be used as the edging and a channel made of concrete trough stones is used to drain the asphalt surface.

Removing a water-bound blanket on the walkway / bike path parallel to the street. Profile existing frost protection layer. Installation of a new asphalt base and surface course.

Work to be done:

road construction:

Area L 70n or footpath / bike path:

- approx. 720 m 2nd Remove water-bound ceiling (area of pedestrian and cycle path);

- approx. 1 100 m 2nd Profiling the FSS underlay (pedestrian and cycle path area);

- approx. 120 m 3rd Remove excess building material (area of walkway and cycle path);

- Install approx. 120 t of frost protection 0/32 (area of pedestrian and cycle path);

- approx. 3 350 m 2nd Milling asphalt (L 70 n);

- approx. 720 m 2nd Asphalt base course AC 22 TL (pedestrian and cycle path area);

- approx. 720 m 2nd Asphaltic concrete AC 5 DL (pedestrian and cycle path area);

- approx. 3 350 m 2nd Asphalt binder AC 16 BS (L 70n);

- approx. 3 350 m 2nd Asphaltic concrete AC 11 DS (L 70n);

- Approx. 480 m banquet W = 50 cm (walking and cycling path area).

RKB area:

- approx. 420 m 2nd Frost protection layer 0/45 mm, d = 36 cm

- approx. 135 m 1-z plaster strips 160/240/140 mm

- approx. 36 m trough stones W = 50 cm

- approx. 65 m 2nd Gravel lawn

- approx. 420 m 2nd Asphalt base course AC 22 TN

- approx. 420 m 2nd Asphalt concrete AC 8 DN

Civil engineering structures:

RKB, shaft structures, channels:

- 1 psch execution documents including workshop drawings;

- 1 psch inventory documents;

- 1 psch pelvis book;

- 1 Psch proof of stability;

- 1 psch work / support scaffolding;

- 1 psch lightning protection and grounding;

- 1 Psch construction site set-up and construction schedule;

- 1 psch traffic safety;

- approx. 800 m 2nd Clear construction site;

- about 5 trees cut down over 0.10 to 0.75 m;

- approx. 97 pieces of rhizomes clear 0 to 0.75 m;

- approx. 3 500 m 3rd RKB earthworks, trenches and secondary areas;

- approx. 1 pc. Simple pump system;

- approx. 1 mobile pump system;

- approx. 90 m percolation pipe;

- approx. 6 m ductile iron pipes DN 200-250;

- approx. 60 m reinforced concrete pipes DN 400;

- approx. 4 plastic shafts DU 400 mm;

- approx. 1 shaft masonry DU 1000 mm;

- approx. 3 shaft structures made of precast concrete;

- approx. 1 piece of reinforced concrete shaft structure;

- approx. 230 m 2nd Cleanliness layer concrete C12 / 15;

- approx. 280 m 3rd Reinforced concrete C30 / 37 including formwork;

- approx. 27 t reinforcing steel B500B;

- approx. 2 DN 200 gate valves;

- approx. 1 piece gate valve DN 250;

- approx. 3 shut-off valves DN 400;

- approx. 68 m crash railing made of stainless steel plus swing doors;

- approx. 6 stainless steel ladder length = 4.00 to 5.00 m including step-over bends;

- approx. 2 pieces of 5 and 6-part grating cover;

- approx. 115 m steel mesh fence H = 2.03 m plus double-leaf gate; lenght L = 6.00 m;

- approx. 95 m control tests sewer.

Part B:

New construction of the parking lot on an area of approx. 3,200 m 2nd with 86 parking spaces and an approx. 35 m long bus bay. The parking lot is bordered on one side with a walkway of about 2.50 m wide. At the parking lot, 4 new connecting walkways will be created, whereby 2 walkways must be equipped with a 1.50 m wide staircase to overcome the existing terrain height difference. The roadways are paved with asphalt and the parking spaces with concrete paving. Green spaces will be created within the parking lot on the top of the parking spaces, which will later be planted with trees. At this point, the expansion of the root system is limited by a root protection measure. The cross-section is usually divided into 4.00 m wide lanes and 4.80 m wide parking spaces. The bituminous ceilings to be created must be installed without a central seam.

Manufacture of a DN 300 channel from reinforced concrete (length approx. 120 m). Relocation of shaft structures made of reinforced concrete DN 1000. Install deep funnel for internal falls. Relocation of 2 downhill runs. The street gullies to be relocated in the construction area (500x300) are connected to the new sewer using PP pipes DN 150 (length approx. 123 m).

Work to be done:

- construction site equipment;

- traffic regulation and security;

- earthworks;

- drainage;

- Parking lot lighting and empty pipe route;

- base courses according to ZTV T-StB and ZTV SoB-StB;

- Asphalt work according to ZTV-Asphalt StB;

- edge fixings;

- Paving slabs according to ZTV P-StB;

- road markings;

- accompanying green;

- signage;

- stairways;

- Working in hourly records.