1 Scope
This standard describes the planning, design as well as setting principles and requirements of a safety way guidance system (SWGS) in public building.
This standard is not only applicable to design and arrangement of electric light source element and phosphorescent light element of SWGS in public building but also applicable to the situation that different SWGS elements are determined according to SWGS service environment, materials, design, installation and maintenance.
This standard also does not include the special considerations of possible tactile or audible emergency facilities of SWGS, nor does it include requirements concerning the emergency escape route lighting, especially the design and application of emergency escape route lighting, unless illumination is used to mark safety equipment or special features of the escape route like the emergency exit doors or stairs.
This standard is not applicable to SWGS design and arrangement of ships through waterway and sea transportation.
2 Normative References
The following normative documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents apply. For undated references, the latest edition of the normative document referred to applies.
GB/T 2893.1 Graphical Symbols - Safety Colours and Safety Signs - Part 1: Design Principles for Safety Signs in Workplaces and Public Areas (GB/T 2893.1-2004, ISO 3864-1: 2002, MOD)
GB 2894 Safety Signs and Guideline for the Use
GB/T 15565 (All of the parts) Graphical Symbol - Terms
GB/T 2900.65 Electrotechnical Terminology - Lighting (GB/T 2900.65 2004, IEC 60050-845: 1987, MOD)
IEC 60364-5-55 Electrical Installations of Buildings - Part 5-55: Selection and Erection of Electrical Equipment - Other Equipment 1
IEC 60598-2-22 Luminaries- Part 2-22: Particular Requirements - Luminaries for Emergency Lighting
CIE Publication 69:1987, Methods of Characterizing Illuminance Meters and Luminance Meters: Performance, Characteristics and Specification
3 Terms and Definitions
For the purpose of this standard, terms and definitions established in GB/T 15565 and GB/T 2900.65 apply.
3.1
Period of use
(Safety way guidance system) time over which the safety way guidance system is expected to be operational.
3.2
Safety direction sign
Signs composed by arrows and graphical signs and (or) words for emergency exit.
4 Planning a Safety Way Guidance System (SWGS)
4.1 General
Since SWGS are complex and can consist of a variety of possible components, factors shall be taken at the planning stage to determine appropriate designs:
- anticipated number of people who will use the escape route;
- demographic characteristics of the people occupying the building;
- type of activities being carried out in the occupied area;
- expected delay time for the commencement of the evacuation;
- type, size, occupation and location of the building;
- complexity of the escape routes and the possibility for confusion at changes of direction and floor level;
- specific hazards likely to be encountered;
- specific risk conditions in which use of the escape routes will be necessary;
- any existing emergency escape route features, such as floor plans;
- the possible combinations of components in SWGS to assist evacuation under specific risk conditions such as presence of diffused or stratified smoke, earthquakes, and presence of obstacles or specific crowding conditions.
