What should be the height of the chair?

Question

Workplace

Greetings.
Bought a new chair.
It seems comfortable, beautiful.
They brought it - it turned out that it was a little high.
At least compared to my past.
The armrests are almost at table level. (in the lowest position)
Sobsno question: is it unusually simple for me or do I need to urgently change it before it's too late?

Answer 1

The height of the chair should be such that the knees are at a right angle when standing on the floor, and the armrests should serve as an elbow rest while working on the keyboard.

Answer 2

Do you need a higher table?
The armrests are not important, it is important that the hands lie comfortably, and not ride up on the table. Few people use armrests. For example, I have a corner table, and my hands are entirely on it. Many generally unfasten the armrests.

Answer 3

comp-doctor.ru/law/law_sanpin96.php
Point 8.

8. Requirements for the organization and equipment of workplaces with VDT and PC
8.1. General requirements
8.1.1. Workplaces with VDT and PC in relation to the light openings should be located so that natural light falls from the side, mainly from the left.
8.1.2. ... the distance between desktops with video monitors (in the direction of the rear surface of one video monitor and the screen of another video monitor) must be at least 2.0 m, and the distance between the side surfaces of video monitors must be at least 1.2 m.
And very often computers stand literally close to each other...
8.1.4. Window openings in rooms where VDTs and PCs are used must be equipped with adjustable devices such as blinds, curtains, external visors, etc.
8.1.5. Workplaces with VDT and PC when performing creative work that requires significant mental stress or high concentration of attention should be isolated from each other by partitions 1.5 - 2.0 m high.
8.1.11. The working chair (armchair) must be up and swivel and adjustable in height and angle of inclination of the seat and back, as well as the distance of the back from the front edge of the seat, while the adjustment of each parameter must be independent, easy to carry out and have a secure fit.
8.1.12. The surface of the seat, back and other elements of the chair (chair) should be semi-soft, with a non-slip, non-electrifying and breathable coating that provides easy cleaning from dirt.
8.1.13. The screen of the video monitor should be at an optimal distance of 600 - 700 mm from the user's eyes, but not closer than 500 mm, taking into account the size of alphanumeric characters and symbols.
8.1.14. In rooms with VDT and PC, wet cleaning should be carried out daily.
8.1.15. Premises with VDT and PC should be equipped with a first aid kit and carbon dioxide fire extinguishers.
8.2. Requirements for the organization and equipment of workplaces with VDT and PC for adult users
8.2.1. The height of the working surface of the table for adult users should be adjusted within 680 - 800 mm; if this is not possible, the height of the working surface of the table should be 725 mm.
8.2.3. The work table must have legroom at least 600 mm high, at least 500 mm wide, at least 450 mm deep at the knees and at least 650 mm at the level of the outstretched legs.
8.2.4. The working chair (chair) must be lifting and swivel and adjustable in height and angle of inclination of the seat and back, as well as the distance of the back from the front edge of the seat. Its design should provide:
- the width and depth of the seat surface is at least 400 mm;
- seat surface with rounded front edge;
- adjustment of the height of the seat surface within 400 - 550 mm and forward tilt angles up to 15 degrees. and back to 5 degrees;
- the height of the supporting surface of the backrest is 300 ± 20 mm, the width is not less than 380 mm and the radius of curvature of the horizontal plane is 400 mm;
- the angle of inclination of the backrest in the vertical plane within ±30 degrees;
- adjustment of the backrest distance from the front edge of the seat within 260 - 400 mm;
- stationary or removable armrests with a length of at least 250 mm and a width of 50 - 70 mm;
- adjustment of the armrests in height above the seat within 230 ± 30 mm and the internal distance between the armrests within 350 - 500 mm.
8.2.5. The workplace must be equipped with a footrest with a width of at least 300 mm, a depth of at least 400 mm, height adjustment up to 150 mm and an angle of inclination of the support surface of the stand up to 20 degrees. The surface of the stand must be corrugated and have a 10 mm high edge along the front edge.
8.2.6. A workplace with a VDT and a PC should be equipped with an easily movable music stand for documents.
8.2.8. The keyboard should be placed on the table surface at a distance of 100 - 300 mm from the edge facing the user or on a special, height-adjustable work surface, separated from the main tabletop.
8.3. Requirements for the organization and equipment of workplaces with VDT and PC for students of secondary and higher educational institutions
8.3.1. Premises for classes using a PC and VDT in secondary and higher educational institutions should be equipped with single tables designed to work on a PC and VDT.
8.3.5. The height of the edge of the table facing the person working with the PC and VDT, and the height of the legroom should correspond to the height of students in shoes.
8.3.6. If there is a high table and chair that does not correspond to the height of students or students, it is necessary to use a height-adjustable footrest (see clause 8.2.5).
8.3.7. Eye level with a vertical VDT screen should be at the center or 2/3 of the height of the screen. The line of sight should be perpendicular to the center of the screen and its optimal deviation from the perpendicular passing through the center of the screen in the vertical plane should not exceed ±5 degrees, the permissible ±10 degrees.
8.3.8. A workplace with a PC and VDT should be equipped with a chair, the main dimensions of which should correspond to the height of students in shoes (Appendix 13).
8.4. Requirements for equipment and organization of premises with PC-based play complexes for preschool children
8.4.1. The premises where gaming complexes are installed should be equipped with single tables.
8.4.5. It is not allowed to use cubes, stools, benches without back support instead of chairs.