KENYA STANDARD KS 2818:2018. Furniture Office panel systems Workstations KENYA BUREAU OF STANDARDS (KEBS)

Transcription

1 Furniture Office panel systems Workstations KENYA BUREAU OF STANDARDS (KEBS) KEBS 2018 First Edition 2018

2 TC Representation The following organizations were represented on the technical committee. Mr. Charles Kalomba Mr. Eliud Mbiyu Mr. Lucas O. Oduk Mrs.Sylvia Gitonga Mr. Ronald Ngala Ms. Rose Mboya Oyoo T.O. Secretariat Kenya National Federation of Jua Kali Association (KNFJKA) Shauri Moyo Furniture Association Galua Fabricators Ltd Directorate of Occupational Safety and Health Services (DOSHS) Village Furnitures Kenya Industrial Research and Development Institute (KIRDI) Kenya Bureau of Standards (KEBS) REVISION OF KENYA STANDARDS In order to keep abreast of progress in industry, Kenya Standards shall be regularly reviewed. Suggestions for Improvements to published standards, addressed to the Managing Director, Kenya Bureau of Standards, are welcome. Kenya Bureau of Standards, 2006 Copyright. Users are reminded that by virtue of section 6 of the Copyright Act, Cap. 130 of the laws of Kenya, copyright subsists in all Kenya Standards and except as provided under section 7 of this Act, no Kenya Standard produced by Kenya Bureau of Standards may be reproduced, stored in a retrieval system in any form or transmitted by any means without prior permission in writing from the Managing Director. 2

3 DRAFT KENYA STANDARD Furniture Office panel systems Workstations KENYA BUREAU OF STANDARDS (KEBS) Head Office: P.O. Box 54974, Nairobi-00200, Tel.: ( ) , , Fax: ( ) Web: Coast Region Lake Region North Rift Region P.O. Box 99376, Mombasa P.O. Box 2949, Kisumu P.O. Box 2138, Nakuru Tel.: ( ) , /40 Tel.: ( ) 23549, Tel.: ( ) , Fax: ( ) Fax: ( ) Fax: ( )

4 Foreword Kenya Bureau of Standards is a national standards body (NSB). The work of preparing Kenya Standards is normally carried out through national technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. National organizations, governmental and non-governmental, in liaison with KEBS, also take part in the work. Kenya Standards are drafted in accordance with the rules given in the KS ISO/IEC Directives, Part 2. The main task of technical committees is to prepare National Standards. Draft Kenya Standards adopted by the technical committees are circulated to the technical committee members for balloting. Publication as a Kenya Standard requires approval by at least 2/3 of the members casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. KEBS shall not be held responsible for identifying any or all such patent rights. This Kenya Standard was prepared by Technical Committee KEBS/TC 164, Furniture. During the preparation of this standard, reference was made to the following documents: IS 3663: 1993: Dimensions of tables and Chairs for office purposes The assistance derived from these publications is hereby acknowledged. 4

5 Office panel systems Workstations S E C T I O N 1 S C O P E A N D G E N E R A L 1 SCOPE This Kenya Standard sets out the requirements for the evaluation, design, and selection of office workstations. It specifies minimum requirements for function, strength, durability and stability of workstations, leaving designers and manufacturers the maximum opportunity to develop suitable products. This Standard does not apply to mobile workstations or special cases such as schools, where the height of counters or benches, for example, might vary from those specified in this Standard. 2. DEFINITIONS For the purpose of this Standard the definitions below apply. 2.1 Adjustable keyboard surface a moveable surface which is occupied primarily by the keyboard. 2.2 Importer the persons or corporate body assuming legal responsibility for the product, if the product is not manufactured in Kenya. 2.3 Manufacturer the persons or corporate body assuming legal responsibility for the product under relevant, if the product is manufactured in Kenya. 2.4 Modular systems furniture modular furniture made up of independent work surface and storage units with panels used as end panels or space dividers. Includes all modular furniture components that collectively are required to complete a workstation. 2.5 Non-load-bearing panel or screen all freestanding screens that provide visual or acoustical separations, or both and are intended to be used to divide space, but not to be used to support furniture items physically. 2.6 Panel system products the freestanding, non-load bearing panels, panel-supported systems, modular systems and various hangon components used in conjunction with panel systems. 2.7 Panel-supported individually connected panels and work surface, filing, storage, and shelving components and accessories that receive their primary support from the panels and that, when combined, form complete workstations. 5

6 2.8 Workstation a grouping of furniture items and components either fixed or adjustable in height that, when assembled designates where a person performs work in an office and facilitates the performance of tasks. S E C T I O N 2 F U N C T I O N A L R E Q U I R E M E N T S 3 STRENGTH AND DURABILITY Strength and durability requirements are specified in Section 3. 4 STABILITY Stability requirements are specified in Section 4. 5 WORK SURFACE RESISTANCES The work surface requirements for resistance to mechanical damage, liquids, heat and impact are specified in Section 5. 6 COMPONENTS AND MATERIALS Material, adhesive and finish requirements are specified in Section 6. 7 TOLERANCE Unless otherwise stated all forces and masses shall be measured to an accuracy of ±5% and all dimensions to an accuracy of ±2 mm. 8 SAFETY 8.1 The following safety requirements apply: (a) Electrically operated workstations shall comply with KS IEC (b) Motors should not cause interference or damage to equipment memory. (c) The corners of the working surface support structure and keyboard platform, if fitted, shall have no sharp edges and shall be well rounded. A minimum radius of 2 mm is recommended. (d) All surfaces of the workstation including the underside of the workstation top shall be free of projection and pinch points that could cause personal injury or damage to clothing. (e) All adjustable mechanisms accessible from the seated position shall be constructed to prevent finger or hand entrapment or cause other injuries to the user. (f) Wiring and cabling shall comply with relevant standards. 8.2 CABLE MANAGEMENT Facilities should be incorporated within the workstation design to accommodate the cables required for power, data transmission, and telephone demands of the workstation. Provision should also be made to stow excess cable and allow for cable and equipment maintenance. Switches which are used regularly should be readily accessible. Cable and ducting systems shall comply with relevant standards. 8.3 STORAGE FACILITIES Storage facilities for frequently used items should be provided at each workstation and should (a) be stable and not present a hazard when fully loaded; 6

7 (b) be constructed so that they can be opened, closed, and locked (when lockable) from the normal operating position; and (c) when located under an adjustable work surface, should be of a height so that full work surface adjustment is not impeded. 8.4 DIMENSIONAL REQUIREMENTS SEATEDWORKSTATIONS (see Figure 1) Work surface area The following requirements apply: (a) The work surface area should be adequate for the tasks to be performed at the workstation (see Clause 5). It should be large enough to accommodate a screen, keyboard and associated equipment, and leave enough room for writing and for the resting of hands and arms. The workstation should also be large enough to permit items used regularly to be within easy reach of the operator from the normal operating position (see Figure 1(a)). (b) For single task operations (e.g. keyboard work), the work surface shall have minimum dimensions of 1200 mm 800 mm. (c) For mixed tasks (e.g. keyboard and clerical work), the work surface shall have minimum dimensions of 1600 mm 800 mm. (d) Under the work surface there shall be ample knee space, sufficient room to prevent a mobile storage unit from protruding beyond the front of the work surface and sufficient height to not impede full work surface adjustment if storage facilities are located under an adjustable work surface Height adjustable work surfaces The following requirements apply: (a) Work surfaces with height adjustment capability in the vertical direction shall have a minimum travel of 150 mm. (b) Where adjustable, the top of the work surface shall include a range of movement between 610 and 760 mm from the floor (see Figure 1(a)). (c) If the workstation height adjustment is provided in steps, they shall be not more than 25 mm. NOTE: Continual adjustment of the desktop is preferable. 7

8 8.4.4 Fixed height work surfaces DIMENSIONS IN MILLIMETRES FIGURE 1(a) DIMENSIONS FOR SEATED WORKSTATION NOTE: A fixed height workstation with an adjustable keyboard platform is an alternative to the preferred option of a height adjustable workstation. For fixed height work surfaces, the height of the work surface shall be not less than 680 mm and not greater than 735 mm with the keyboard platform being vertically adjustable within a range of 120 mm below the work surface. The height should preferably be 700 mm to 720 mm Work surface thickness The maximum thickness of the work surface over the leg space including any supporting structure shall be 33 mm (recommended thickness = 25 mm or thinner) Work surface finish The following requirements apply: (a) The work surface should be a light colour and have a satin or matt finish. (b) The specular reflectance of gloss for furniture surfaces shall be 50% or less when measured with a 60 gloss instrument in accordance with ASTM D523 standard test method for specular gloss greater than (c) The work surface finish should also be easy to clean and enable the user to write on a single sheet of paper without backing Leg Space The following requirements apply: 8

9 (a) Sufficient space should be provided under the work surface to allow free leg movement without obstruction. (b) The minimum knee space shall be 650 mm wide and 450 mm deep. For fixed height work surfaces the minimum height of the knee space shall be 645 mm. (c) Leg space depth front to back measured at a distance above the floor of 120 mm shall be a minimum of 600 mm (see Figure 1(b)). Leg space depth should be available over the full 650 mm width. NOTES: 1 Leg space depth is measured horizontally from front to back. This ensures that users are able to sit at the desk without encountering restriction at knee level. 2 Leg space width is measured horizontally with any fixed or mobile drawer, storage unit or any other equipment in place. This minimum requirement is necessary to allow changes in leg posture and to facilitate chair swivel for reaching to the side or getting on and off the chair. (d) When an adjustable keyboard platform is fitted, the 650 mm wide unobstructed knee space should be maintained. Where this is not possible the mechanism supporting the platform shall not protrude into the knee space by more than 80 mm at any setting. The mechanism shall be free of sharp edges, protrusions and entrapment hazards that could cause injury to the seated user. (e) Work surface, supports, cables and other equipment should not encroach into leg space. DIMENSIONS IN MILLIMETRES FIGURE 1(b) EXAMPLES OF WORKSTATION LAYOUTS FOR SBE AND MIXED TASKS 9

10 8.4.8 Modesty panel When a modesty panel is fitted it should provide operator privacy under the work surface. The modesty panel should finish no greater than 400 mm from the floor when the work surface is in its highest position, and should not interfere with work surface height adjustment. NOTE: It is recommended that there be a minimum gap of approximately 120 mm from the floor. 8.5 COUNTER WORKSTATIONS General design requirements Counters may embody the following features: (a) A work surface for operators. (b) Enough space for the screen-based and associated equipment, including room for the operator to be positioned a comfortable distance from the screen. (c) An appropriate surface for customers, e.g. space for displaying or signing documents, a shelf for bags. (d) Comfortable reach distances for operator and customer consistent with security requirements. (e) Roughly equal eye-level positions for operator and customer. (f) Safe access to and from any raised platforms. (g) Barriers to prevent the falling or tripping of people over any raised platforms. Counters should also comply with the appropriate requirements of Clause Standing workstation When the workstation is not adjustable, the work surface should be approximately 950 mm in height. When the work surface is adjustable in height, it should at least include the range of 900 mm to 1100 mm from the floor. On the customer s side, the counter should be not lower than 1020 mm and not higher than 1200 mm Seated workstation Where the operator is seated, eye-level contact between operator and customer may be maintained by raising the floor area or providing a height adjustable chair incorporating a footrest behind the counter. Where the customer is standing, the counter height should be not less than 1020 mm and not greater than 1200 mm on the customer s side. Where a raised platform is used, the work surface height on the operator s side shall be as specified for a seated workstation in this Standard. S E C T I O N 3 S T R E N G T H A N D D U R A B I L I T Y R E Q U I R E M E N T S 9.1 GENERAL The tests specified in Clauses 9.2 and 10.2 shall be conducted in sequence and on the same panel system product. 9.2 PERFORMANCE REQUIREMENTS Mechanical strength test for panel system products When tested in accordance with KS 2819 Part 1, the following shall apply: 10

11 (a) For functional loads No structural damage, or loss of serviceability of a panel system, including the panel s work surface, shelves, connectors or other components shall result from the application of the functional loads. (b) For proof loads No failure of a panel system, work surface, shelves, connectors or other components that would cause personal injury shall result from the application of the proof loads Static load test for storage shelves When tested in accordance with KS 2819: 2018 Part 2, the following shall apply: (a) For functional loads No structural breakage or loss of serviceability shall result from application of the functional static load. (b) For proof loads No failure that would cause personal injury shall result from application of the proof static load Cabinet test When tested in accordance with KS 2819: 2018 Part 3, the following shall apply: (a) For functional loads No structural breakage or loss of serviceability shall result from application of the functional static load. (b) For proof loads No failure that would cause personal injury shall result from application of the proof static load Static load test for work surfaces without supported drawers When tested in accordance with KS 2819: 2018 Part 4, the following shall apply: (a) For functional loads The following shall apply: (i) No structural breakage or loss of serviceability shall result from application of the functional static load. (ii) Any deflection of the work surface shall not exceed 1% of its length, and any residual deflection of the work surface after testing shall not exceed 10 mm. (b) For the proof load No failure that would cause personal injury shall result from application of the proof static load Static load test for work surfaces with supported drawers When tested in accordance with KS 2819: 2018 Part 5, the following shall apply: (a) For functional loads The following shall apply: (i) No structural breakage or loss of serviceability shall result from application of the functional static load. (ii) Each drawer, when closed individually, shall remain closed. (iii) Any deflection of the work surface during load shall not exceed 1% of its length, and any residual deflection of the work surface after testing shall not exceed 10 mm. (b) For the proof load No failure that would cause personal injury shall result from application of the proof static load Lock test for drawers supported by work surfaces When tested in accordance with KS 2819: 2018 Part 6, the drawer shall not open during the pull test, the locking mechanism shall operate normally after the test and no component shall become dislodged. 11

12 9.2.7 Outstop test for drawers supported by work surfaces When tested in accordance with KS 2819: 2018 Part 7, the unit shall not structurally fail nor show loss of serviceability, including outstops and mounting hardware Rebound test for drawers supported by work surfaces When tested in accordance with KS 2819: 2018 Part 8, the following shall apply: (a) No opening shall exceed 40 mm at any at-rest position. (b) The unit shall have no structural damage or loss of serviceability Dislodgment test for panel-mounted components When tested in accordance with KS 2819: 2018 Part 9, the component shall not become dislodged and no structural breakage or loss of serviceability shall result from application of the force Horizontal and vertical adjustment tests When tested in accordance with KS 2819: 2018 Part 10, the unit shall remain functional with no reduction in adjustment range and no structural damage that could cause personal injury. S E C T I O N 5 W O R K S U R F A C E R E S I S T A N C E 10.1 GENERAL The work surface shall be tested for resistance to mechanical damage, wet heat, dry heat, staining agents and cleaning agents in accordance with one of the following: (a) KS 2819: 2018 Part 12 Standard if the work surface has a lacquer finish. (b) KS ISO :2015, if the work surface has a high pressure laminate finish. (c) KS ISO 15234:1999 if the work surface has a melamine or other synthetic surface finish. NOTE: Other materials than those specified in Clause 5.1(a), (b) or (c) shall be tested to ensure they have equivalent resistance to mechanical damage and staining PERFORMANCE REQUIREMENTS When tested in accordance with the above Standard, the work surface shall meet the requirements for severe use in the case of the lacquer finish or in the case of any other finishes shall meet the maximum requirement specified in the Standard. SECTION 6 REQUIREMENTS FOR COMPONENTS AND MATERIALS 11.1 RESISTANCE TO HUMIDITY CHANGES General When a product is specified to be used in high humidity or a possible cycling humidity environment, then it is required that material, adhesives and finish are resistant to changing environmental conditions and comply with criteria specified in AFRDI Test Method 104. The following conditions shall be applied for testing: (a) Humidity 35%, temp. 23 ±2 C, time 3 weeks. (b) Humidity 65%, temp. 23 ±2 C, time 3 weeks. (c) Humidity 95%, temp. 23 ±2 C, time 3 weeks Performance requirement When tested in accordance with AFRDI Test Method 104, there shall be no apparent defects or changes (splitting, gaps, glue failure, delamination or veneer cracking). 12

13 11.2 METAL COMPONENTS The following requirements apply: (a) All metal components shall be finished to leave no sharp, rough or dangerous surfaces. (b) All exposed metal surfaces where a risk of corrosion exists shall be treated with a noncorrosive, durable coating prepared and applied in accordance with the coating manufacturer s recommendations. The finish shall have adequate resistance to wear. (c) Chromium plating where required shall comply with KS ISO 4539:1980. The surfaces are to be prepared and plating applied in accordance with sound trade practices FLAMMABILITY REQUIREMENTS Panels shall meet the current requirements for internal walls and panels as specified in the Building Code of Kenya. When no criteria are specified, the fabric, or foam and fabric combination shall meet the burning behaviour performance requirements specified in KS ISO ACOUSTIC REQUIREMENTS FOR PANELS For a panel to be deemed an acoustic panel it shall meet the following requirements. (a) It shall have a sound absorption coefficient of no less than The value is to be determined by testing to KS ISO 354. (b) It shall have a sound transmission class rating (STC) of no less than 20. The STC class is to be determined in accordance with KS ISO 717. If a workstation is required to meet specific acoustic requirements all panels shall have acoustic properties which comply with appropriate standards AIR CIRCULATION REQUIREMENTS The workstation shall provide for natural air circulation if required. S E C T I O N 7 M A R K I N G, I N S T R U C T I O N S A N D T E S T R E P O R T 12.1 MARKINGREQUIREMENTS AND INSTRUCTIONS All furniture items shall be supplied with full operating instructions and clearly marked with the following: (a) The manufacturer s/supplier s or importer s name and address. (b) The date of manufacture TEST REPORTS Test reports shall be reproduced in full, provided on request and include a summary of compliance with the functional requirements in this Standard and shall include the information listed in the Paragraphs titled Report in KS 2819: 2018 Parts 1 to 12. NOTE: Manufacturers making a statement of compliance with this Kenya Standard on a product, packaging, or promotional material related to that product are advised to ensure that such compliance is capable of being verified. 13