BS EN ISO 10848-3. Acoustics. Laboratory & field measurement of flanking transmission for airborne, impact & building service equipment sound between adjoining rooms. Part 3. Application to Type B elements when the junction has a substantial influence Acoustics, Sound insulation, Acoustic measurement, Acoustic testing, Construction systems parts, Buildings, Airborne sound insulation, Impact sound insulation, Laboratory testing, Walls, Floors, Between, Rooms