Project description:
The subject of this contract was the construction of noise barriers. This involved 3 barriers to protect the protected outdoor area of the residential buildings in Mokré Lazce.
“Barrier 1” at km 0.39401 – 0.70470 is mostly located on an unpaved curb, partly on a ledge. Noise barrier length: 310.4 m, height: 1.5 – 4.5 m, axial distance between columns from 2 to 4 m depending on the method of anchoring
“Barrier 2” at km 0.26839 – 0.77952 is mostly located on an unpaved curb, partly on a ledge.
Noise barrier length: 514.0 m, height: 1.5 – 5.0 m, axial distance between columns from 2 to 4 m depending on the method of anchoring
For Barriers 1 and 3, laminated absorbent panel DSH/12 PB was used.
Acoustic properties of the panel: acoustic classification A3/B3, soundproofing 34 dB, sound absorption 9 dB
“Barrier 3” at km 0.76508 – 1.01503 was installed along an unpaved curb, length: 252.0 m
Height: 1.5 – 2.0 m, axial distance of columns: 4.0 m
For Barrier 3, transparent reflective panel DSH/5 PB was used.
Acoustic properties of the panel: acoustic classification B3, soundproofing 36 dB
On the ledge of structure SO 221, transparent panels PMMA (thickness 15 mm) in aluminium frames were used.
The load-bearing structure of the noise barriers consists of steel rolled profiles of the HEA 160 and HEB 160 series, depending on the height of the barriers.
The columns were anchored on the unpaved curb by drilling into augur reinforced concrete piles. In the case of ledges and flat foundations, the columns were anchored with chemical anchors, using a steel base plate.
