Noise Survey & Vibration Monitoring – Great Ormond Street Hospital, London
Project Name: Great Ormond Street Hospital Phase 2B
Contractor: Balfour Beatty – Mansell
Architect: Llewelyn Davies Yeang
Indoor noise and vibration monitoring of ongoing construction works.
The NHS client needed the utmost care and attention to be paid to the potential affects of noise and vibration in the existing hospital from ongoing construction works on the adjacent hospital site.
The monitoring was carried out for the purposes of comparing the general noise and vibration incident upon the surrounding buildings and occupants when the ground and preparation work were being carried out against baseline levels measured in the absence of the preparation work. The site noise surveys and vibration monitoring enabled Mansells to show all works were in line with current standards and good practice –detailed below.
The on site monitoring required HRS to set up 7 linked monitoring stations throughout the hospital. Reference was made to:
- BS 5228-1: 2009 ‘Code of Practice for Noise and vibration control on construction and open sites’ The Standard is a Section 60 and 71 of the Control of Pollution Act 1974.
- Part 1 of British Standard (BS 5228).
- British Standard 6472 Part 1 2008 ‘Guide to the evaluation of human exposure to vibration in buildings’ The standard includes a section on impulsive or intermittent vibrations which requires the vibration exposure to be determined in terms of a ‘vibration dose value’, VDV. This takes into account the magnitude of the vibration and the duration of the exposure.
- British Standard BS7385-2:1993 ‘Evaluation and measurement for vibration in buildings – Part 2: Guide to damage levels from ground-borne vibration’ provides vibration criteria relating to building damage and advice on acceptable levels of vibration in structures.
Noise Survey Results