m2 Partition wall made up of self-supporting galvanised steel framework consisting of a 73 mm horizontal structure (channel) on a TECSOUND S50 BAND 50 damping band and a 70 mm vertical structure (stud) placed every 600 mm, on which two 12.5 mm gypsum plasterboard panels will be screwed on both sides with a self-adhesive synthetic acoustic insulation sheet with a polymeric base without asphalt of 2,000 Kg/m3 density, 5 Kg/m2 and 2.5 mm thickness, type TECSOUND SY 50 between panels; placement of absorbent material such as mineral wool of 70 mm thickness and density 50 Kg/m3 between the studs. Acoustic insulation level to airborne noise: RA = 58 dBA.