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This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 3326-1997 Furniture - Main sizes of tables and seats and the following main changes have been made with respect to GB/T 3326-1997:
——The codes of tables, chairs and stools are modified (see clause 2; clause 2 of 1997 edition);
——The size requirements for the height difference of middle clearance height and chair/stool seat surface in the subclause - "Table top height, seat height and matching height difference" (see 3.1) are added;
——The size requirements for the inner width of armrests, seat depth and back length in the subclause - "Armchairs" are modified (see 3.2.1; 3.2.1 of 1997 edition);
——The size requirements for the front width of seat, seat depth and back length in the subclause - "Back-rest chairs" are modified (see 3.2.2; 3.2.2 of 1997 edition);
——The size requirements for the front width of seat, seat depth and back length in the subclause - "Folding chairs" are modified (see 3.2.3; 3.2.3 of 1997 edition);
——The size requirements for the side length (or diameter) of square and round stools are modified (see 3.3.2; 3.3.2 of 1997 edition);
——The size requirements for the clearance height of legs of double-pedestal desks are deleted (see 3.4.1 of 1997 edition);
——The size requirements for the clearance height of legs of single-pedestal desks are deleted (see 3.4.2 of 1997 edition);
——The size requirements for the height of the upper edge of the mirror above the ground in the subclause - dressing table are modified (see 3.4.4; 3.4.3 of 1997 edition);
——The requirements for size range are deleted (see 3.1, 3.2, 3.4 and 3.5 of 1997 edition).
This standard was proposed by China National Light Industry Council.
This standard is under the jurisdiction of the National Technical Committee on Furnitures of Standardization Administration of China (SAC/TC 480).
This standard was firstly issued in 1982 and revised in 1997 for the first time.
Furniture - Main sizes of tables, chairs and stools
1 Scope
This standard specifies the main sizes of tables, chairs and stools.
This standard is applicable to the design and production of double-pedestal desk, single-pedestal desk, dressing table, single-layer table, armchair, back-rest chair, folding chair, long square stool, square stool and round stool; it may also be referred for that of other types of tables, chairs and stools.
2 Code
See Table 1 for main size codes and descriptions of tables, chairs and stools.
Table 1 Main size codes and descriptions of tables, chairs and stools
No. Code Code description
1 B Width of table top
2 B1 Width of seat surface
3 B2 Inner width of armrests, i.e., the minimum horizontal distance between armrests
4 B3 Front width of seat, i.e., the horizontal width of the front edge of the seat surface
5 B4 Width of middle clearance
6 B5 Inner width of drawers of side table
7 T Depth of table top
8 T1 Depth of seat, i.e., the distance between the center point of front edge of seat surface and the intersecting line of seat surface and back surface
9 H Table top height
10 H1 Seat height, i.e., the distance from the highest point on the front of the central axis of the seat to the ground
11 H2 Armrest height, i.e., the highest point of the front edge of the armrest
12 H3 Middle clearance height
13 H4 The height of the lower edge of the mirror above the ground
14 H5 The height of the upper edge of the mirror above the ground
15 L1 Length of stool surface
16 L2 Back length, i.e., the distance between the center point of back upper edge and the intersecting line of back and seat surface
17 D Diameter of seat surface
18 D1 Diameter of stool surface
19 α Seat inclination
20 β Back inclination
3 Main sizes
3.1 Table top height, seat height and matching height difference
See Figure 1 and Table 2 for table top height, seat height and matching height difference.
Figure 1 Schematic diagram for table top height, seat height and matching height difference
Table 2 Table top height, seat height and matching height difference In: mm
Table top height
H Seat height
H1 Matching height difference of table top and chair/stool seat surface
H-H1 Matching height difference of middle clearance height and chair/stool seat surface
H3-H1 Middle clearance height
H3
680~760 400~440
460 for maximum seat height of soft surface (including the sinkage) 250~320 ≥200 ≥580
Note: In case of special requirements or contract requirements, all sizes shall be noted in the contract by the supplier and the purchaser, and are not subject to this limitation.
3.2 Sizes of tables
3.2.1 Armchairs
See Figure 2 and Table 3 for the sizes of armchairs.
Figure 2 Schematic diagram for sizes of armchairs
Table 3 Sizes of armchairs
Inner width of armrest
B2 Seat depth
T1 Armrest height
H2 Back length
L2 Seat inclination
α Back inclination
β
≥480mm 400mm~480mm 200mm~250mm ≥350mm 1°~4° 95°~100°
Note: In case of special requirements or contract requirements, all sizes shall be noted in the contract by the supplier and the purchaser, and are not subject to this limitation.
3.2.2 Back-rest chairs
See Figure 3 and Table 4 for the sizes of back-rest chairs.
Figure 3 Schematic diagram for sizes of back-rest chairs
Table 4 Sizes of back-rest chairs
Front width of seat
B3 Seat depth
T1 Back lengtha
L2 Seat inclination
α Back inclination
β
≥400mm 340mm~460mm ≥350mm 1°~4° 95°~100°
Note: In case of special requirements or contract requirements, all sizes shall be noted in the contract by the supplier and the purchaser, and are not subject to this limitation.
a Decorative backrest is not subject to this limitation, which shall be clearly stated in the instructions for use.
3.2.3 Folding chairs
See Figure 4 and Table 5 for the sizes of folding chairs.
Figure 4 Schematic diagram for sizes of folding chairs
Table 5 Sizes of folding chairs
Front width of seat
B3 Seat depth
T1 Back length
L2 Seat inclination
α Back inclination
β
340mm~420mm 340mm~440mm ≥350mm 3°~5° 100°~110°
Note: In case of special requirements or contract requirements, all sizes shall be noted in the contract by the supplier and the purchaser, and are not subject to this limitation.
3.3 Sizes of stools
3.3.1 Long square stools
See Figure 5 and Table 6 for the sizes of long square stools.
Figure 5 Schematic diagram for sizes of long square stools
Table 6 Sizes of long square stools In: mm
Width of stool surface
B1 Depth of stool surface
T1
≥320 ≥240
Note: In case of special requirements or contract requirements, all sizes shall be noted in the contract by the supplier and the purchaser, and are not subject to this limitation.
3.3.2 Square and round stools
See Figures 6 and 7 and Table 7 for the sizes of square and round stools.
Figure 6 Schematic diagram for sizes of square stools
Figure 7 Schematic diagram for sizes of round stools
Table 7 Schematic diagram for sizes of square and round stools In: mm
Item Width (or diameter) of stool surface
B1 (or D1)
Size ≥300
Note: In case of special requirements or contract requirements, all sizes shall be noted in the contract by the supplier and the purchaser, and are not subject to this limitation.
3.4 Sizes of tables
3.4.1 Double-pedestal desks
See Figure 8 and Table 8 for the sizes of double-pedestal desks. The cabinets on both sides of the double-pedestal desks may be integral or combined types.
Figure 8 Schematic diagram for sizes of double-pedestal desks
Table 8 Sizes of double-pedestal desks In: mm
Width of table top
B Depth of table top
T Middle clearance height
H3 Middle clearance width
B4 Inner width of drawers of side table
B5
1,200~2,400 600~1,200 ≥580 ≥520 ≥230
Note: In case of special requirements or contract requirements, all sizes shall be noted in the contract by the supplier and the purchaser, and are not subject to this limitation.
3.4.2 Single-pedestal desks
See Figure 9 and Table 9 for the sizes of single-pedestal desks. The side cabinet of the single-pedestal desks may be integral or combined types.
