ISO 6897:1984 PDF

Guidelines for the evaluation of the response of occupants of fixed structures, especially buildings and off-shore structures, to low-frequency horizontal motion (0,063 to 1 Hz)

Open preview (PDF)

Title (English):

ISO 6897:1984

Guidelines for the evaluation of the response of occupants of fixed structures, especially buildings and off-shore structures, to low-frequency horizontal motion (0,063 to 1 Hz)

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 8
Publication date:: August 1, 1984
Edition:: ISO IS 6897 edition 1 version 1
ICS:: 13.160

Delivery type:

Full version25 €Read online 24h10 €Read online 72h15 €

Document language:

enru

Delivery time:Immediate download

Price:25 €

Description (English):

Relates to typical responses of people. The recommendations are categorized according to the use and to the nature of work being carried out. Does not deal with the injury of people due to structural vibration. Guidance on satisfactory magnitudes of vibrations for specific situations is given in the annex.

Technical details

Technical committee: ISO/TC 108/SC 4 - Human exposure to mechanical vibration and shock
SKU: ISO 6897:1984

Abstract

Overview

ISO 6897:1984 provides guidelines for evaluating the human response to low-frequency horizontal motion (0.063 to 1 Hz) of fixed structures - primarily buildings and seabed-founded off‑shore platforms. The standard focuses on whole‑body perception and subjective response (alarm, intrusion, interference with tasks) rather than structural damage or injury. It gives recommended r.m.s. acceleration magnitudes for use in assessing occupant response to wind‑ or wave‑induced motion, with specific guidance for storm events (notably 10‑minute peak intervals and a 5‑year return period reference).

Key topics and technical requirements

Scope and exclusions
- Applies to human perception of horizontal motion in standing, sitting or reclining postures.
- Excludes injury effects, blasting/earthquake events and floating platforms (tension‑leg, articulated).
Frequency band
- Targets 0.063–1 Hz (very low‑frequency horizontal motion).
Human response categories
- Basic threshold effects, alarm/intrusion (adverse comment), and interference with activities.
- Acceptance criteria tied to percent of occupants likely to comment (e.g., ~2% adverse comment in buildings for a 5‑year storm peak).
Measurement and analysis
- Measure r.m.s. horizontal acceleration at the structural surface that transmits motion to occupants.
- Analyze continuous records for discrete frequency components; use one‑third octave bands and vector addition of orthogonal components (accounting for phase).
- For low frequencies, long averaging times are required (examples: >200 s for good confidence at ~0.08 Hz).
- Filtering: vibration outside 0.063–1 Hz should be filtered (recommended slope ≥24 dB/octave).
- Recommended instrumentation includes calibrated accelerometers, matched amplifiers and spectral analysis (FFT or equivalent).
Assessment guidance
- Annex provides perception threshold curves (referred to as curve 1 and curve 2) for satisfactory r.m.s. acceleration magnitudes: general-purpose buildings and precision/critical tasks or trained offshore personnel respectively.
- Short‑duration events (

Related standards

Other ISO standards

Abstract

Overview

Key topics and technical requirements

Scope and exclusions
- Applies to human perception of horizontal motion in standing, sitting or reclining postures.
- Excludes injury effects, blasting/earthquake events and floating platforms (tension‑leg, articulated).
Frequency band
- Targets 0.063–1 Hz (very low‑frequency horizontal motion).
Human response categories
- Basic threshold effects, alarm/intrusion (adverse comment), and interference with activities.
- Acceptance criteria tied to percent of occupants likely to comment (e.g., ~2% adverse comment in buildings for a 5‑year storm peak).
Measurement and analysis
- Measure r.m.s. horizontal acceleration at the structural surface that transmits motion to occupants.
- Analyze continuous records for discrete frequency components; use one‑third octave bands and vector addition of orthogonal components (accounting for phase).
- For low frequencies, long averaging times are required (examples: >200 s for good confidence at ~0.08 Hz).
- Filtering: vibration outside 0.063–1 Hz should be filtered (recommended slope ≥24 dB/octave).
- Recommended instrumentation includes calibrated accelerometers, matched amplifiers and spectral analysis (FFT or equivalent).
Assessment guidance
- Annex provides perception threshold curves (referred to as curve 1 and curve 2) for satisfactory r.m.s. acceleration magnitudes: general-purpose buildings and precision/critical tasks or trained offshore personnel respectively.
- Short‑duration events (

ISO 6897:1984 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

Related standards

Information technology — Information security incident management — Part 2: Guidelines to plan and prepare fo…

Risk management — Guidelines

Ships and marine technology — Specification for bunkering of liquefied natural gas fuelled vessels

Information technology — Information security incident management — Part 1: Principles and process

Information technology — Artificial intelligence (AI) — AI system impact assessment

Information technology — Information security incident management — Part 3: Guidelines for ICT incident respo…

Innovation management system — Requirements

Ships and marine technology — Offshore wind energy — Port and marine operations