NBN EN 1729-1:2015

This European Standard specifies functional dimensions and markings for all chairs, stools and tables, for educational institutions, including fixed and adjustable chairs and tables.
It applies to both un-upholstered and upholstered chairs and stools as well as to both non-swivel and swivel chairs. It applies to furniture for use with laptop computers or portable devices.
It does not apply to ranked seating or special purpose workstations.
It does not apply to furniture used by teaching personnel.
Annex A (normative) includes single-sloped chairs and associated tables.
Annex B (normative) includes double-sloped high chairs and associated tables.
Annex C (normative) includes standing-height tables.
Annex D (normative) includes tall chairs and associated tables.
Annex E (normative) includes stools and associated worksurfaces.
Annex F (normative) includes measurement methods.
Annex G (informative) includes guidance on size marks for adjustable chairs and tables.
Annex H (informative) includes guidance on calculating heights of double-sloped chairs and associated tables.
Annex I (informative) includes a rationale for functional dimensions.