Delivered by: Giles Parker
Date: 12th May 2021.
(2 Sessions) – Each Presentations (60 mins) with a 15 minute break and time for Questions (15-20mins)
Session 1: NOISE BARRIER DESIGN THEORY
§ Basic Technology – Covering Sound Diffraction, Sound Absorption (DLa) and Airborne Sound Insulation (DLR)
§ Modelling & Calculation Methods and their Limitations
§ To include (non exhaustive list) the maekawa method, CRTN method, prediction methods, leakage through barriers, atmospheric effects, absorptive barrier predictions.
§ The Impact of Noise Barrier Surface Density on Barrier Design
§ The Impact of Low Frequency Noise on Barrier Design
§ Practical – Calculation Techniques
Session 2: NOISE BARRIER PERFORMANCE TESTING
§ Laboratory Acoustic Test Standards : Airborne Sound Insulation – IEN 1793 Part 2 and 6
§ Laboratory Acoustic Test Standards : Sound Absorption – IEN 1793 Part 1 and 5
§ CE Marking of Noise Barriers – IEN 14388
§ Allowing for Performance Degradation (Sound Insulation)
§ Practical – Study Example Calculation for a Road/Industrial Scheme
Photo: Gramm Barriers
