Specifications

MWSTD-1472E
5.7.3,1 Work surface width and depth. A lateral workspace not less than 76 cm (30 in) wide
and 40 cm (16 in) deep shall be provided whenever practicable.
5.7.3.2 WodCsurface Mltit. Desk tops and writing tables shall be 74-79 cm (29 to 31 in)
above the floor, unkas otherwise specified.
5.7.3,3 Writing surfaces. If consistent with operator reach mquiremcnts, writing surfaces on
equipment consoles shall be not less than 40 cm (16 in) deep and should be 61 cm (24 in) wide.
5.7.3.4 Seating
5.7.3.4.1 Compatibility. Work seating shall provide an adequate supporting framework for the
body relative to the activities that must be carried out. Chairs to be used with sit-down consoles shall
be operationally compatible with the console configuration.
5.7.3.4.2 Se@pan and vertical adjustment. The seat pan shall have an adjustable height of 38 to
54cm(15t021 rn)inincmmen tsofnomomthan 3cm(lin)each. (See Tabk I.) Iftheseatheight
exceais 53 cm (21 in), a
footrestshall be provided and single pedestal seats shall have a 5-legged
base. The seat pan shall have a 0-7° adjustable tilt mamvad, be between 38-46 cm (15 -18 in)
wide, and shall be not more than40cm(16 in) deep.
5.7.3.4.3 Backrest. A supporting backrest that reclines 100°-115° shall be provided. The
backrest shall engage tk lumbar and thoracic regions of the back, and shall support the torso in such a
position that the operator’s eyes can be brought to the “Eye Line” with no more than 8 cm (3 in) of
forward body movement. The backrest width shall be 30-36 cm (12 -14 in).
5.7.3.4.4 Cushioning and tmholstery.
Where applicable, both the backrest and seat shall be
cushioned with at least 25 mm (1 inch) of compressible material and provided with a smooth surface.
Upholstery shall be durable, nonslip, and porous.
5.7.3.4.5 AmKesta
Unkss otherwise specified, ~
ZJhallbeprovided Armmststhatam
h~@titi~’& ti&@lW5cm(2 d)w~d~m(8h)loW. Modi.fkdor
retractable amreats shall be providedwhen necessq
to maintain compatibility with an associated
console and shall be adjustable from 19 to 28 cm (7.5 to 11 in) above the compressed sitting surface.
Distance between armmsts should be not less than 46 cm (18. 1in).
5.7.3.4.6 Seat base Chairs shall have at least four supporting legs. Swivel chairs should have
five supporting legs. The diameter of the seat base of swivel type chairs should be 46 cm ( 18 in).
5.7.3.4,7 Footrests. Footmats, where provided, shall contain nonskid surfaces and shall be
adjumabiefmm2.5+023em(lto4%t) abov&efkaor, aot&Mw&3QcaA(12 in)@a,nd30-40
cm(12-16in)wide. FOOtmSXinChMmnShallbe25- 300.
5.7.3.5 Knee room. Knee and foot morn not less thttn 64 cm (25 in) high, 51 cm (20 in) wide,
and 46 cm (18 in) deep shall be provided beneath work surfacas; however, if a fixed footrest or a foot-
Operatd Comrol is provi@ the bight din’usion shall be Mreased accordingly.
5.7,3.6 Display placement, normal. Visual displays mounted on vertical panels and used in
nmma!eqmpmcrmopemtMn shnilbeiOeated 15- li7cm@i-46i f@wvebsht@MwLkAz (k
Tnhk I)
s ~ T7 13isPk~.Jl:},
‘
ccmeyt, syc@l. Displnys thnt m~lstbe mad preciselv nnd frrq~rntlv shalI
lUGA in an area 36-89 cm (14-35 in) above the sitting surface, and no titier than 53 cm (2 I m)
liilcr:tll)’t“r~mlthe t.en[erline. (Ste
TalIk>1.)