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GB 7793-2010 English PDF

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GB 7793-2010: [Including 2018XG1] Hygienic standard for day lighting and artificial lighting for middle and elementary school
Status: Valid

GB 7793: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB 7793-2010	English	139	Add to Cart	3 days [Need to translate]	[Including 2018XG1] Hygienic standard for day lighting and artificial lighting for middle and elementary school	Valid	GB 7793-2010
GB 7793-1987	English	199	Add to Cart	2 days [Need to translate]	Hygienic standard of lighting and illumination in elementary and middle school	Obsolete	GB 7793-1987

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Basic data

Standard ID	GB 7793-2010 (GB7793-2010)
Description (Translated English)	[Including 2018XG1] Hygienic standard for day lighting and artificial lighting for middle and elementary school
Sector / Industry	National Standard
Classification of Chinese Standard	C56
Classification of International Standard	13.100
Word Count Estimation	6,622
Date of Issue	2011-01-14
Date of Implementation	2011-05-01
Older Standard (superseded by this standard)	GB 7793-1987
Quoted Standard	GB/T 5699; GB/T 5700; GB/T 50033; JGJ/T 119
Regulation (derived from)	Announcement of Newly Approved National Standards No. 2 of 2011
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This Chinese standard specifies the school classroom lighting and lighting requirements. This standard applies to cities, towns new construction, renovation and expansion of the regular primary schools, secondary normal schools and normal school children.

GB 7793-2010: [Including 2018XG1] Hygienic standard for day lighting and artificial lighting for middle and elementary school

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Hygienic standard for day lighting and artificial lighting for middle and elementary school ICS 13.100 C56 National Standards of People's Republic of China Replacing GB 7793-1987 Primary and secondary school classroom lighting and lighting health standards Issued on. 2011-01-14 2011-05-01 implementation People's Republic of China Ministry of Health Standardization Administration of China released

Foreword

4.2,4.3,4.4,4.5,4.6,5.1,5.2,5.3,5.9,5.10,5.11 this standard is mandatory, the rest are recommended. This standard replaces GB 7793-1987 "primary and secondary school classroom lighting and lighting health standards." This standard and GB 7793-1987 compared to the main changes are as follows. --- Modify some of the terms and definitions (this standard 3.1,3.3; GB 7793-1987 of 3.1, 3.3). --- An increase of some terms and definitions (this standard 3.2,3.4,3.6,3.7,3.8,3.9,3.10). --- Removed some terms and definitions (GB 7793-1987 of 3.2,3.4,3.6). --- Modify the classroom lighting standard (this standard 4.1,4.2,4.3,4.5; GB 7793-1987 of 1.1,1.2,1.4). --- Revised classroom lessons desktop, blackboard lighting standards (this standard 5.2,5.3; GB 7793-1987 of 2.2, 2.3). --- Increased the light of the provisions (of this standard 5.4,5.5,5.6,5.7). --- Increasing the value of classroom unified glare, lighting power density, the provisions of the maintenance coefficient (this standard 5.8,5.9,5.10). --- Remove the control provisions of the compensation coefficients (GB 7793-1987 2.6). This standard is proposed and administered by the People's Republic of China Ministry of Health. This standard by the People's Republic of China Ministry of Health is responsible for interpretation. This standard was drafted. Child and Adolescent Health Institute of Peking University, China Academy of Building Research Institute of Building Physics, Beijing Health Authority. The main drafters of this standard. Ma, Zhang Shaogang, high power, Zhang Lin. This standard supersedes the previous editions are. --- GB 7793-1987. Primary and secondary school classroom lighting and lighting health standards

1 Scope

This standard specifies the school classroom lighting and lighting requirements. This standard applies to cities, towns new construction, renovation and expansion of the regular primary schools, secondary normal school and normal school children.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 5699 daylighting measurement methods GB/T 5700 Lighting Measurement GB/T 50033 architectural lighting design standards JGJ/T 119 architectural lighting terminology standards

3 Terms and Definitions

JGJ/T 119 as well as established the following terms and definitions apply to this standard. 3.1 Daylight factor daylightfactor Indoor and outdoor illumination in a given time, with the same lighting coefficient of a point on the plane for the point of unobstructed horizontal plane generated Days Diffuse illumination of the air ratio, expressed as a percentage of. 3.2 Window to area ratio ratioofglazingtofloorarea Indoor floor area ratio of window area of the hole. 3.3 Direct glare directglare In the field of vision, especially in the presence near the line of sight direction of the luminous body arising from glare. 3.4 Reflectance reflectance On the surface of an object reflected flux to the incident flux ratio on the surface of the object to ρ represents. 3.5 Illumination uniformity uniformityratioofiluminance On the surface of a predetermined minimum illuminance and the average illuminance ratio. 3.6 Maintenance factor maintenancefactor When the lighting device in use after a certain period, the average luminance or average illuminance on the specified surface of the newly installed device under the same conditions In a predetermined surface of the obtained average luminance or average illuminance ratio. 3.7 Reflected glare glarebyreflection Perspective from the glare caused by reflection, especially near the line of sight direction of the reflected glare like to see produced. 3.8 Maintaining the average illuminance maintainedaverageiluminance Average illuminance on the specified surface shall not be less than this value. It is illuminating device must be maintained in time, on the specified surface The average illuminance. 3.9 CRI colourrenderingindex In a reasonable allowance for chromatic adaptation state of mental and physical parameters measured color light source illuminating an object than the illumination of the same color swatch heart Color management in line with the physical measurement of the degree. 3.10 Unifiedglarerating UGR unified glare values Measure in the light of the human eye visual environment illumination device emits the discomfort caused by subjective psychological reaction parameter, its value can be Press the CIE Unified Glare value formula.

4 classroom lighting requirements

4.1 classrooms toward wish to decide by geographical and climatic conditions of each region, should not be used toward something, we should adopt bilateral mining north-south Light. When unilateral classroom lighting, light should be from the left seat of the student incident. When outside the South Gallery North classrooms, to the north should be taken as the main window Smooth. Daylight factor as low as 4.2 Ⅲ class classroom desk surface light climate zones should not be less than 2%, other optical daylight factor should be multiplied with climate zones It should light climate factor. Optical coefficient in accordance with Table 1 using the climate, the climate zone where the light should be GB/T 50033 China isolated light climate zoning map. Table 1 optical coefficient K Climate Light climate Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ K value 0.85 0.90 1.00 1.10 1.20 Outdoor natural presence sector illumination value E1 lx 6000 5,500,500,045,004,000 4.3 classroom window to the area should not be less than 5. 4.4 In order to prevent direct glare windows, curtains classroom should be set to avoid sunlight directly into the classroom. To prevent blackboard reflected glare, the table Face should wear a matte material. 4.5 In order to improve the lighting effect of the classroom, each interior surface should be high brightness low saturation decorated rooms each reflective surface than in accordance with Table 2 Select the provisions. Table 2 indoor reflectance of each surface Name reflection surface reflectance surface area name ceiling Front wall ground 0.70 to 0.80 0.50 to 0.60 0.20 to 0.40 Side wall, back wall Lesson Desktop blackboard 0.70 to 0.80 0.25-0.45 0.15 to 0.20 4.6 daylighting measurement method according to GB/T 5699 execution.

5 classroom lighting requirements

5.1 Where the classroom should be installed artificial lighting. Maintaining the average luminance value of 5.2 classroom desk surface should not be lower than 300lx, its illumination uniformity should not be less than 0.7. 5.3 should be set locally classroom blackboard lighting, which maintains not less than the average illuminance 500lx, illumination uniformity should not be less than 0.8. 5.4 classroom should be adopted 3300K ~ 5500K color temperature of light source, color rendering index of the light source should not be less than 80. 5.5 classroom use less than 26mm thin tube straight tube-shaped rare earth trichromatic fluorescent lamp. 5.6 should adopt energy-efficient classroom lighting fluorescent magnetic ballasts or electronic ballasts. 5.7 In order to reduce direct glare caused by the lighting, the classroom should not be used bare lighting. Lamps from the lowest class desktop suspension height should not Less than 1.7m. Lamp arrangement should adopt its long axis perpendicular to the surface of the board layout. For the amphitheater, in front of the rear lights should not produce students Direct glare. 5.8 unified glare classroom (UGR) should not be less than 19. 5.9 while maintaining the average luminance value 300lx conditions, the current value of the classroom lighting power density should not exceed 11W/m2, the target should be 9W/m2. 5.10 illuminance lighting design calculations, the maintenance factor shall be taken as 0.8. 5.11 classroom lighting measurement method according to GB/T 5700 execution.

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