Poland - Supervision of construction work

Description

The subject of the contract is to exercise investor's supervision over the construction of 3 surface small retention reservoirs with water damming facilities, located in forest districts 186, 187, 188 of Budziszewice, Regna forest district, plots of land marked in the land register No. 330, 331, 328, 329, 326 and 327 of Wykno, commune of Ujazd, county of Tomaszów, within the project entitled "The project is to be implemented under the name of "The project of the Municipality of Ujazd". "Comprehensive project for adaptation of forests and forestry to climate change - low retention and prevention of water erosion in lowland areas", co-financed by the Cohesion Fund, under the Operational Programme Infrastructure and Environment (OPI&E).Size and characteristics of the tanks under construction: Tank No. 1 - Forest Division 186 (trench G-1) - on the cut-off ditch G-1 from km 1+840 to km 1+960,- area of the tank F = 0.60 ha,- retention capacity Vret = 9 000 m3,- water surface ordinate = 199.50 m above sea level,- the ordinate of the tank bottom: 197.80 m a.s.l.,- tank depth to the water surface: h = 1.7 m,- heel valve, closing height: Hp = 0.65 m,- tank slope: 1:2,- slope reinforcement: sowing,- concrete damming valve in km 1 + 838 of ditch G-1:- closure height: Hp = 0.65 m,- valvular bottom ordinate: 198.85 m above sea level,- width of the bottom: B = 0.80 m,- closure: wooden chandeliers,- total length: 5.50 m,- portable wooden footbridge: L = 3.30 m.Tank No. 2 - forest division 187 (trench G-1) - on the section of trench G-1 from km 2+265 to km 2+410,- area of the tank F = 0.80 ha,- retention capacity Vret = 12 000 m3,- water surface ordinate = 201.00 m above sea level,- Tank depth to the water surface: h = 1.7 m,- tank bottom row: 199.30 m above sea level,- slope of tank slopes: 1:2,- slope reinforcement: sowing with grass,- concrete damming valve in km 2+270 of ditch G-1:- closure height: Hp = 0.65 m,- valvular bottom line: 200.35 m above sea level,- width of the bottom B = 0.80 m,- closure: wooden chandeliers,- total length: 5.50 m,- portable wooden footbridge L = 3.30 m.Tank No. 3 - Forest Division 188 (P-5 ditch) - on the P-5 ditch section from km 3+980 to km 4+110,- two-part tank divided by an earth dyke in km 4+054,- tank area F = 0,70 ha,- retention capacity Vret = 10 500 m3.Lower part: - water surface ordinate = 198,80 m above sea level,- Tank depth to the water surface: h = 1.90 m,- tank bottom row: 196.90 m asl, - earth dyke in km 3+680, rz.k. 199.10 m asl, - crown width: 5.0 m,- slope of the tank slopes: 1:2,- concrete piling valve in km 3+980 of trench P-5:- closing height Hp = 0,95 m,- bottom row of the valve: 197.85 m above sea level,- width of the bottom B = 0.80 m,- closure: wooden chandeliers,- total length: 5.50 m,- portable wooden gangway: L = 3.30 m.- upper part: - water surface ordinate = 199.75 m above sea level,- tank ordinate: 197.80 m a.s.l.,- depth of the reservoir to the water surface: h = 1.95 m,- earth dyke in km 4+054; k. 200.30 m above sea level,- crown width: 5.0 m,- slope of the tank slopes: 1:2,- fortifications: sowing,- piling monk in an earth dyke in km 4+054 of trench P-5:- piling and pouring concrete well H=2m50 m B=1.0 x 1.0 m,- closure height Hp = 0.95 m,- closure: wooden chandeliers,- bottom row = 197.80 m above sea level,- inlet to vent: 197.85 m a.s.l.,- bottom discharge - discharge pipe: Ø 500 mm L=28.0 m,- wooden working footbridge,- reinforcement: stone surcharge on geotextile.

Opportunity closing date

27 January 2020

Value of contract

to be confirmed