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Engineering of the “Sea Garden” site – rehabilitation of the street network, including alleys and playgrounds, lighting and elements of the street infrastructure. Reconstruction and construction of new playgrounds for sports and games, recreation areas, park furniture, etc. Reconstruction of irrigation system, vegetation within the project “Aestheticization and modernization of the urban environment in Varna” under procedure BG16R FOP001-1.002 “Implementation of integrated plans for urban reconstruction and development 2014-2020-Varna”, Priority axis 1 “Sustainable and integrated urban development” of OP “Regions in growth” 2014-2020
According to the design program, the site is divided into eight zones:
– Zone A – Alpineum
– Zone B – Rosary
– Area C – green areas, retaining wall, natural stone walkway, pergola viewing platform and repair of staircase and retaining wall to the promenade
– Zone D – green and colorful areas between Zone B and the Summer Theater (“Exotic” Zone)
– Zone D – “Under the rainbow” – zone east of Zone C
– Zone E – zone between the Sea Casino, the Planetarium and the Aquarium
– Zone G – bicycle lane, parallel to “Knyaz Boris I” Blvd., alley network and retaining walls
– Zone 3 – zone covering other large green areas, composed of two sub-zones: Zone “West” and Zone “East” – Alley of Japanese cherry trees.

The project covers:
– analysis of the historical development of each area and the possibilities of restoring the function and vision from the original image. Reconstruction and beautification are planned for some of the areas. Some of them have a changed function, in some places there are structural problems related to the geological features of the terrain.
– preservation to the maximum extent of the original appearance of the pavements, the cladding of the retaining walls, the vision and dimensions of the park elements. Replacement of some of the elements of the park equipment to achieve greater sustainability while maintaining the character and vision of the original details.
– restoration of the visibility to the sea on the panoramic platforms, hampered by the tall vegetation that has developed over the years.

A “Bridge of Desires” restoration detail has been prepared. Based on archival photos, detailed drawings were made for the construction of a new wooden bridge with supporting metal elements. The existing foundations on which the new structure rests are used, and the secondary beams, railings and flooring are entirely wooden. The old bridge is made of unbleached birch elements, which are perishable over time. That is why a massive coniferous material is prescribed – larch, impregnated and treated against external influences. It is planned to carry out sanitary pruning of trees and for enlightenment in the lower floors of the undergrowth, as well as carrying out rejuvenating pruning of bushes.
The introduction of typical alpine vegetation is foreseen; reconstruction of the lawns by sowing soil-strengthening grasses in the steep sections and sowing the sunny lawn with alpine flower seeds.
It is planned to clean the cascade of water mirrors, lay waterproofing and build a pump shaft with installed 2 pcs. circulation pumps with sand filter and automated system control.
Restoration of an existing drinking water fountain is also planned.
Restoration of existing lighting.

The restoration of the Rosary includes the restoration of the water areas, the paths, the retaining walls, the characteristic garden elements – gazebos, benches and pergolas in their authentic form. While preserving the overall compositional vision of Rosarum, the project aims to restore the damaged elements, including:
– discovery and rearrangement of the paving slabs on a ground base, observing the shapes and sizes
– repair of the broken sections of glitz masonry walls, incl. restoration of missing elements, hats, finishing
– restoration of the function of the water mirrors, the fountain and the park furniture according to an architectural detail, preserving their design.
Of interest is the rose named after Yuri Gagarin, to be transplanted behind the cosmonaut’s plaque, in the front part of the Rosarium, next to the central avenue.
It is planned to restore 3 pcs. water mirrors, on an existing drinking water tap, for which the stop valve will be replaced and an automatic valve will be installed in order to reduce drinking water costs.
In this area, the existing park lighting will be restored by laying new cable lines. The same will join the park lighting.

Construction of a new railing in the area of the undisturbed driveway, cleaning and resurfacing of the driveway and retaining wall cladding. For the installation of benches, the standard ones for this part of the Sea Garden will be used – cast metal construction for the legs and armrests on both sides and wooden elements for the seating area.
Replacement of lighting fixtures.
Dismantling the Black Gazebo and building a new one based on a detail from the past.
Sanitation of landscaping.
Construction of additional park lights to join existing

park lighting.

Restoration of the “Tropical” corner (“Exotics”) and combining the area for quiet relaxation with a summer reading room.
It is planned to repair the pavements and the round stone cladding.
New park furniture is planned.
It is planned to build the green areas with perennial (perennial) and ornamental grasses, to plant pine solitaire and a group of maritime pines, characteristic of our Black Sea coast, as well as re-grassing of compromised grass areas.
Implementation of formative and sanitary pruning of the trees in the area.
Revision, reconstruction and restoration of the water elements – plumbing facilities for the water mirror and the fountains in the area.
Construction of additional park lighting to join the existing park lighting.

The project includes restoration of the environment – the cladding of the retaining wall, the pavement of limestone slabs. The benches, characteristic of this area, are also being restored, using preserved parts of concrete castings.
It is planned to carry out sanitary and formative pruning of the vegetation with the clearing of self-growths and lianas.
Construction of completely new lighting, in accordance with the new park furniture. The same will be powered by the existing park lighting.

In front of the Aquarium, repair of the model of the Black Sea is planned – restoration of the fiberglass insulation on its surface, laying of smeared waterproofing on the bottom and restoration of the pumping shaft with water meter and the drainage shaft. A circulation pump with a sand filter and automated system control will be installed, allowing the circulation of the full volume of water 2 times a day, in order to reduce the required water resources for the operation of the water effects.
To the east of the model, repaving of the alley leading to the Planetarium is planned. Above the canal, which is dry and fills only during heavy rains, it is planned to build a wooden platform bridging the two levels and connecting the avenue to the Planetarium. The platform will be made of coniferous material – larch, impregnated against pests and atmospheric influences.
Beautification of the green area, through partial reconstruction and extension with perennial vegetation suitable for the shady habitat.
The project also provides for sanitary, forming and rejuvenating pruning of trees and shrubs. Removal of dry and semi-dry trees with more than 80% drying.
During the reconstruction of the green area, the top layer of worn-out soil is removed and new humus is introduced for good growth conditions.
Construction of additional park lighting to join the existing park lighting.

In the northern part of the Sea Garden, it is planned to organize a bicycle lane, parallel to “Knyaz Boris I” Blvd., located in the existing alley network, by restoring the asphalt pavement and by means of markings, a zone for cyclists with a width of 150 cm is determined. In this way the pedestrian zone remains at a minimum width of 150 cm in the narrowest sections of the avenue. When restoring the pavement, the existing situation is strictly followed, as no expansion and encroachment into the green areas is foreseen.
Within the framework of the project, compromised sections of separate alleys and retaining walls are also being restored.

SUBZONE: Zone “West”
Taking into account the compositional and species structure, a delicate introduction of colorful enrichment, which is consistent with the most powerful colorful accent in the area – “Cercis”, with early spring flowering, without betting on species that would compete with it in this period.
The project provides for:
– preservation of the compositional plant backbone of the area and the character of the place, as a clean green area
– application of the new vegetation closely in front of the existing one, so as not to disturb the transitional nature of the composition, without breaking the visual and physical connection between the spaces.

SUBZONE: East Zone – Alley of Japanese Cherry Trees
The project provides for:
– planting, restoration of the row of Japanese cherry trees
– removal of dry trees
– sanitary and formative pruning of trees
– formation of the periphery, by selective removal of self-growths, shoots and lianas
– pruning to rejuvenate the shrub groups
– alignment of the green area and reconstruction with seeding
It is planned to build a new irrigation system for the entire area.

According to the assignment, the construction of an irrigation system in the areas subject to reconstruction under the present project is planned for the water supply section.
For the purpose of the project, the irrigable areas have been determined, which are in the amount of 300 decares.
The irrigation time is predicted to be in the dark part of the day, from 22:00 to 06:00 respectively.
Due to the great variety of plant species in the park, an irrigation rate of 5 l/sq.m/day has been adopted for the full development of the green areas. With this rate, the irrigable areas are divided into 16 approximately equal zones of 18.75 decares, which will be supplied with water through automatic sprinklers and drip hoses, depending

of the type of plants, for 30 minutes to reach the irrigation rate.
The amount of water required to meet the needs of one area is approximately equal to 93.75 cubic m/day, or 52.08 l/s with a supply time of 30 min.
The system pressure is within the limits of 6.0 bar, including the pressure losses along the water line at the farthest point, as well as those from the filter block and the pressure required for the full operation of the irrigation nozzles.

The new installations will join the existing one, the newly added consumers do not increase the existing capacity for the site.
When grounding poles, angle steel earthing rods of dimensions 63/63/6 mm and length 1.5 m with resistance ≤30 Ω will be used.
Along the route of the newly laid cables, there are also other underground wires: LV cables, etc., which is taken into account carefully, so as not to affect and break the integrity of their insulation.
For the final determination of the route, it is planned to make trenches.
At the end, the cables will terminate with cable glands.
When carrying out the construction works, all the requirements of Ordinance No. 3 for the arrangement of electrical systems and power lines, Ordinance Iz-1971 of 29.10.2009, the Regulations on occupational safety in the operation of electrical systems and equipment – D-01 will be observed. -008, as well as all their amendments and additions, valid at the time of execution of the object.

The project covers the construction of a new CCTV to join three different points depending on the protected area, namely: Area A, Area B and Area D, including the installation and grounding of new pylons, pulling FTP cables, installing new cameras.
The video surveillance system is built according to the requirements of the Employer and complies with the framework agreement. It allows for easy upgrade in the future.