EDGE Design checklist

7/30/2019 EDGE Design checklist

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1

pter 1 Design Guidelines ChecklistsVersion 3.2.1

Horizontal Work Reach Criteria Checklist ............................................. 3 Seated Workstation Criteria Checklist................................................... 4 Standing Workstation Criteria Checklist ................................................ 6 Sitting Strength Criteria Checklist ......................................................... 8 Standing Strength Criteria Checklist ..................................................... 9 Grip and Hand Strength Criteria Checklist .......................................... 10 Tool Design and Selection Criteria Checklist ...................................... 12 Material Handling Criteria Checklist .................................................... 14 Machine Clearances and Maintenance Criteria Checklist .................... 15 Platforms, Ladders, and Stairs Criteria Checklist ................................ 18 Screens, Controls, and Gauges Criteria Checklist............................... 20 Environment Criteria Checklist............................................................ 22



Des ign Gu ide l ines Check l i s ts

2© 2007 Humantech

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3

Horizontal Work Reach Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________

Criteria Dimension Measured Acceptable?

A. Normal Reach Max. 12" (30 cm) _________________ Yes No

B. Extended Reach Max. 18" (46 cm) _________________ Yes No

C. Work Distance 1" – 4" (2.5 – 10 cm) _________________ Yes No

D. Normal Reach Width Max. 40" (102 cm) _________________ Yes No

E. Extended Reach Width Max. 60" (152 cm) _________________ Yes No

All values derived from North American populations.




4© 2007 Humantech

Seated Workstation Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


Work Surface Dimensions

A. Work Height – Hands

Light Work Adj. 22" – 31"(56 – 79 cm) _______________ Yes No

Data Entry Adj. 25" – 34"

(63 – 87 cm) _______________ Yes No

Precision Work Adj. 27" – 36"(68 – 91 cm)

_______________ Yes No

B. Display Height Pref. Adj. 27" – 33"(69 – 84 cm)Fixed: 27" (69 cm) _______________ Yes No

C. Work Surface Thickness Max. 2" (5 cm) _______________ Yes No

D. Knee Space Depth Min. 18" (46 cm) _______________ Yes No

E. Knee Well Width Pref. 24" (61 cm)Min. 21" (53 cm) _______________ Yes No

F. Thigh Clearance Min. 8" (20 cm) _______________ Yes No

G. Distance to Work 1" – 4" (2.5 – 10 cm) _______________ Yes No

H. Foot Space Depth Min. 6" (15 cm) _______________ Yes No

I. Distance to Rear of Foot Clearance

Min. 24" (61 cm) _______________ Yes No

J. Foot Space Height Min. 6" (15 cm) _______________ Yes No

Horizontal Work Reach Dimensions

A. Normal Reach Max. 12" (30 cm) _______________ Yes No

B. Extended Reach Max. 18" (46 cm) _______________ Yes No

C. Work Distance 1" – 4" (2.5 – 10 cm) _______________ Yes No

D. Normal Reach Width Max. 40" (102 cm) _______________ Yes No

E. Extended Reach Width Max. 60" (152 cm) _______________ Yes No



5

Seated Workstation Criteria Checklist (cont.)


Other Seated Workstation Criteria

Seat Pan Height 15" – 33" (38 – 84 cm) _______________ Yes No

Head Clearance 39" (99 cm) from seat pan _______________ Yes No

Top of Monitor 27" - 33" (69 – 84 cm)from seat pan _______________ Yes No

Wrist Rest Soft, compressiblematerial

N/A Yes No

Footrest Adjustable height, angle N/A Yes No

Seated Workstation Dimensions






6© 2007 Humantech

Standing Workstation Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


Work Surface Dimensions

A. Work Height – Hands

Precision Work Adj. 37" – 50"(94 – 127 cm) _________________ Yes No

Light Assembly Adj. 33" – 42"(84 – 107 cm) _________________ Yes No

Heavy Work Adj. 28" – 39"(71 – 99 cm) _________________ Yes No

B. Rounded Edges .8" (2 cm) radius _________________ Yes No

C. Foot rail height 6" (15 cm) _________________ Yes No

D. Knee Clearance Min. 5" (13 cm) _________________ Yes No

E. Foot Clearance Height Min. 6" (15 cm) _________________ Yes No

F. Foot Clearance Depth Min. 6" (15 cm) _________________ Yes No

G. Display Height Pref. Adj. 57" – 70"(145 – 178 cm)

Fixed: 70" (178 cm) _________________ Yes No


A. Normal Reach Max. 12" (30 cm) _________________ Yes No

B. Extended Reach Max. 18" (46 cm) _________________ Yes No

C. Work Distance 1" – 4" (2.5 – 10 cm) _________________ Yes No

D. Normal Reach Width Max. 40" (102 cm) _________________ Yes No

E. Extended Reach Width Max. 60" (152 cm) _________________ Yes No

Other Standing Workstation CriteriaHead Clearance Min. 80" (203 cm) _________________ Yes No

Horizontal Viewing Area 15° to either side of workarea _________________ Yes No

Normal Line of Sight 15° below horizontal plane _________________ Yes No

Optimum Viewing + 15° from normal line of sight _________________ Yes No

Anti-fatigue Matting Min. .5" (1.3 cm) thickness _________________ Yes No



7

Standing Workstation Dimensions






8© 2007 Humantech

Sitting Strength Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


A. Push out (1 arm) – near

Infrequent Max. 21 lb (10 kg) _________________ Yes No

Repetitive Max. 4 lb (2 kg) _________________ Yes No

B. Push out (1 arm) – far



C. Pull in (1 arm) – near Infrequent Max. 16 lb (7 kg) _________________ Yes No

Repetitive Max. 3 lb (1.4 kg) _________________ Yes No

D. Pull in (1 arm) – far



E. Push up (1 arm) – near



F. Push up (1 arm) – far

Infrequent Max. 9 lb (4 kg) _________________ Yes NoRepetitive Max. 2 lb (0.9 kg) _________________ Yes No

G. Press down (1 arm) – near



H. Press down (1 arm) – far



Infrequent = less than 2 times per minuteRepetitive = 2 or more times per minute




9

Standing Strength Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


A. Push out (1 hand)



B. Push out (2 hands)



C. Lift up (2 hands)



D. Push down (2 hands)



E. Pull down (2 arms)



F. Pull in (2 arms)








10© 2007 Humantech

Grip and Hand Strength Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


A. Power Grip

Infrequent Max. 20 lb (9 kg) ________________ Yes No

Repetitive Max. 4 lb (1.8 kg) ________________ Yes No

B. Pinch Grip

Infrequent Max. 9 lb (4 kg) ________________ Yes NoRepetitive Max. 2 lb (0.9 kg) ________________ Yes No

C. Key Grip



D. Push Forward with Index Finger



E. Push Down with Index Finger

Infrequent Max. 15 lb (7 kg) ________________ Yes NoRepetitive Max. 3 lb (1.4 kg) ________________ Yes No

F. Push Forward with Thumb


Repetitive Max. 4 lb (2 kg) ________________ Yes No

G. Push Down with Thumb



H. Pull with Pinch Grip 0.1" (0.2 cm)



I. Pull with Pinch Grip 1.6" (4 cm)


Repetitive Max. 2.5 lb (1.2 kg) ________________ Yes No




11

Grip and Hand Strength Measures (Gripping)

Grip and Hand Strength Measures (Finger and Thumb Pushing)

Grip and Hand Strength Measures (Pinch-Pull)


A B C

D E G

H I




12© 2007 Humantech

Tool Design and Selection Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


A. Handle Length

Bare Pref. 5" (13 cm)Min. 4" (10 cm) _________________ Yes No

Gloved Pref. 5.5" (14 cm)Min. 4.5" (11 cm) _________________ Yes No

B. Handle Diameter

Power Grip Pref. 1.5" (3.8 cm)Min. 1.2" (3 cm)Max. 1.8" (4.6 cm) _________________ Yes No

Precision Grip Pref. 0.4" (1 cm)Min. 0.3" (0.8 cm)Max. 0.5" (1.3 cm) _________________ Yes No

C. Handle Span Pref. 3" (7.6 cm)Min. 2" (5.1 cm)Max. 4" (10 cm)

_________________ Yes No

Tool Weight

Power Grip 2.5 lb (1.1 kg) _________________ Yes No

Precision Grip 1.0 lb (0.45 kg) _________________ Yes No

Triggers and Activation Min. 1" (2.5 cm) _________________ Yes No

Handle Surface Non-slip, compressiblematerial, no finger grooves (rubber or closed-cell foam) _________________ Yes No

Torque

Pistol Grip Tools > 60 in-lb (69 cm-kg) should have torque-limiting devices _________________ Yes No

In-Line Tools > 28 in-lb (33 cm-kg) should have torque-limiting devices _________________ Yes No

Right Angle Tools > 442 in-lb (509cm-kg) should havetorque-limiting devices _________________ Yes No



13

Tool Design and Selection Criteria Checklist (cont.)


VibrationHandles have vibration-absorbing materials(compressible rubber or closed-cell foam)

_________________ Yes No

Accessories

Suspend hoses from above _________________ Yes No

Use lightweight hoses _________________ Yes No

Use dyna-swivel connectors _________________ Yes No

Use exhaust mufflers _________________ Yes No

Provide security handles _________________ Yes No

Preventive Maintenance

Monthly maintenance _________________ Yes No





14© 2007 Humantech

Material Handling Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


A. Comfort Zone Bottom Min. 22" (56 cm) _________________ Yes No

B. Comfort Zone Top Max. 49" (124 cm) _________________ Yes No

C. Optimal Comfort

Zone Bottom

Min. 33" (84 cm) _________________ Yes No

D. Optimal ComfortZone Top

Max. 38" (97 cm) _________________ Yes No

E. Distance From Body(to midpoint of hands)

Max. 6" (15 cm) _________________ Yes No




15

Machine Clearances and Maintenance Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


Standing Clearances

Width Min. 24" (61.0 cm) _________________ Yes No

Height Min. 80" (2 m) _________________ Yes No

Prone Work Clearances

Horizontal Min. 76" (193.0 cm) _________________ Yes No

Vertical 18" (45.7 cm) to32" (81.3 cm) _________________ Yes No

Horizontal Work Clearances

Horizontal 30" (76.2 cm) to96" (243.8 cm) _________________ Yes No

Vertical 18" (45.7 cm) to80" (203.2 cm) _________________ Yes No

Preventive Maintenance

Routine checkups _________________ Yes No

Keep it clean _________________ Yes No

Accessibility for Maintenance

Openings are large enough to permit access of bothhands and offer visibility of components _________________ Yes No

Access ports are located so that operators are notexposed to hot surfaces, sharp edges, or electricalcurrents _________________ Yes No

Access ports are easy to remove, with visible andaccessible cover fasteners _________________ Yes No

Circular Hatch, HorizontalClearance

Min. 30" (76.2 cm)diameter _________________ Yes No

Horizontal Hatch Clearance Min. 20" (50.8 cm)high and 24" (61.0 cm)wide

_________________ Yes No




16© 2007 Humantech

Machine Clearances and Maintenance Criteria Checklist (cont.)


Safety Distances

Whole Body Reach Min. 98.5" (250.2 cm) _________________ Yes No

Arms and Hands Adequate safetydistances for fingers,hands, arms areprovided (next page) _________________ Yes No

Safety Distances for Reach of Body Parts (Corlett and Clark, 1995)

Fingertip

≥ 0.15" ≤ 0.3"(≥ 0.4 cm≤ 0.8 cm)

Aperturerectangle orgap a

Finger Hand to ball of thumb Arm

Safetydistance tohazard point b

≥ 0.6"(≥ 1.5 cm)

≥ 0.3" ≤ 0.8"(≥ 0.8 cm ≤ 2 cm)

≥ 4.7"(≥ 12 cm)

≥ 0.8" ≤ 1.2"(≥ 2 cm ≤ 3 cm)

≥ 8.0"(≥ 20 cm)

≥ 1.2" ≤ 5.3"(≥ 3 cm ≤ 13.5 cm)

≥ 33.5"(≥ 85 cm)

a

b

a

b

a

b

Safety Dimensions for Elongated Apertures with Parallel Sides(Corlett and Clark, 1995)



17

Fingertip

≥ 0.15" ≤ 0.3"(≥ 0.4 cm≤ 0.8 cm)

Aperturediameter orlength of side ain. (cm)

Finger Hand to thumb root Arm

Safety distanceto hazard pointb in. (cm)

≥ 0.6"(≥ 1.5 cm)

≥ 0.2" ≤ 0.8"(≥ 0.5 cm ≤ 2 cm)

≥ 4.7"(≥ 12 cm)

≥ 0.8" ≤ 1.6"(≥ 2 cm ≤ 4.1 cm)

≥ 8"(≥ 20 cm)

≥ 1.6" ≤ 10"(≥ 4.1 cm ≤ 25.4 cm)

≥ 33.5"(≥ 85 cm)

a

b

a

b

a

b

Safety Dimensions for Square or Circular Apertures (Corlett and Clark, 1995)

All values derived from North American populations




18© 2007 Humantech

Platforms, Ladders, and Stairs Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


Platform Deck

Deck Size 24" x 25" (61.0 x 63.5 cm) ________________ Yes No

Deck Type Suitable for work environment(stainless, chemical resistant, etc.) ________________ Yes No

Adjustability

Range of Adjustment

Min. 10" (25.4 cm) ________________ Yes No

Type of Adjustment

Powered preferred, hand cranksufficient, 3" (7.6 cm) stackables arean alternative ________________ Yes No

Ladder Criteria

Fixed Ladders See Fixed Ladders (next page) ________________ Yes No

Passage Width Min. 30" (76.2 cm) ________________ Yes No

Dist. Betw. Lad-ders, Obstructions

Min. 24" (61.0 cm) ________________ Yes No

Rung Spacing Min. 7" (17.8 cm), max. 12"(30.5 cm); must be uniform ________________ Yes No

Ladder Height Max. 20' (6.1 m) ________________ Yes No

Toe Space Min. 7" (17.8 cm) ________________ Yes No

Rung Length Min. 16" (40.6 cm) ________________ Yes No

Rung Diameter .75" - 1.5" (1.9 - 3.8 cm) ________________ Yes No

Stair Ladders See Stair Ladders (next page) ________________ Yes No

Railing Height 30" - 34" (76.2 - 86.4 cm), step to rail ________________ Yes No

RailingSpecifications

Wood: min. 2" (5.1 cm)Metal: min. 1.5" (3.8 cm)Support brackets: 8' (2.4 m) spacing

Wall clearance: min. 3" (7.6 cm) ________________ Yes NoHead Clearance 68" (172.7 cm), min. 72" (182.9 cm)

preferred ________________ Yes No

Treads 6" - 10" (15.2 - 25.4 cm), 50° angle5" - 7" (12.7 - 17.8 cm), 60° angle3" - 4" (7.6 - 10.2 cm), 75° angle

________________ Yes No

Step Spacing Min. 7" (17.8 cm), max. 12"(30.5 cm)

________________ Yes No

Surface Non-skid material ________________ Yes No



19

Platforms, Ladders, and Stairs Criteria Checklist (cont.)


Stairs Criteria

Slope 30 - 35° optimal, max. 20 - 50° ____________ Yes No

Step Height,Tread Depth

30°: 6.5" (16.5 cm) high, 11" (27.9 cm) deep35°: 7.2" (18.3 cm) high, 10.2" (25.9 cm) deep40°: 8.0" (20.3 cm) high, 9.5" (24.1 cm) deep45°: 8.8" (22.4 cm) high, 8.8" (22.4 cm) deep50°: 9.5" (24.1 cm) high, 8.0" (20.3 cm) deep

____________ Yes No

Tread Overlap 1" - 1.5" (2.5 - 3.8 cm)

Tread Surface Non-skid material, holes in outdoor stairs

Safety Contrasting material on edge; use mattefinishes, contrasting rail colors

Fixed Ladders

NON-SKID

6" (15 cm)PREFER SAFETY GUARD

FOR TWO-WAY TRAFFICPROVIDE SEPARATESTAIR LADDERS

RISERS:7" - 12" (18 cm - 30 cm)

RAIL SPACING AND TREAD WIDTH:21" (53 cm) MIN24" (61 cm) MAX

TREAD:6" - 10" (15 cm - 25 cm)5" - 7" (13 cm - 18 cm)3" - 4" (7.6 cm - 10 cm)

STAIR ANGLE:50¡60¡75¡

RAIL DIAMETER:1.5" - 2.0" (3.8 cm - 5.1 cm)

30" - 34"(76 cm - 86 cm)

INTERMEDIATERAILS

HEAD CLEAR68" - 72"

(173 cm - 183 cm)

CEILING HEIGHT96" (244 cm)

STANDARD80" (203 cm) MIN

Stair Ladders





20© 2007 Humantech

Screens, Controls, and Gauges Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


Screens

Density 25% or less of screen area used ________________ Yes No

Grouping Group size of 14 x 7 characters ________________ Yes No

Layout Columns recommended over horizontallists ________________ Yes No

Menu Use single menu layers or options for thenext menu layer ________________ Yes No

Icons Graphics and text labels recommended ________________ Yes No

Flicker Screen refresh rate of 75 Hz or greater ________________ Yes No

Resolution Character size of .116" - .128"(.295 - .325 cm) from a distance of 18 -24" (45.7 - 61.0 cm) ________________ Yes No

Selection Contrast of 3:1, up to 8:1 recommendedwith dark letters on a white background ________________ Yes No

Location 18" - 30" (45.7 – 76.2 cm) distance fromeyes ________________ Yes No

Height Top of screen at eye level, 54" - 68"(137 – 173 cm) for standing workstations

________________ Yes No

Lighting Use 300-500 lux in areas where VDTsare used ________________ Yes No



21

Screens, Controls, and Guages Criteria Checklist (cont.)


ControlsType Choose correct type of control for the

application ________________ Yes No

Texture Controls should have some texture todifferentiate them from each other ________________ Yes No

MotionStereotypes

Controls should be compatible withexisting stereotypes (e.g., up for "on" for light switch) ________________ Yes No

Coding andLabeling

Controls should be labeled above thecontrol with color for better identification.Use 9 or fewer different colors. ________________ Yes No

ActivationForces

Hand push buttons, knobs < 2 lb (0.9 kg)push force or .38 in-lb (1.0 cm-kg) of torque ________________ Yes No

Foot push buttons, pedals should notexceed 10 lb (4.5 kg) push force ________________ Yes No

Hand cranks, wheels, levers should notexceed 5 lb (2.3 kg) push force ________________ Yes No

Toggle switches should not exceed 2 lb(0.9 kg) push force ________________ Yes No

Placement Place controls in optimal viewing area byfrequency of use and importance ________________ Yes No

Gauges

Quantitative Digital readout or counter recommended ________________ Yes No

Qualitative Use fixed scale, moving pointer displays ________________ Yes No

StatusIndicator

Use lights with labels for most statusindicator applications ________________ Yes No





22© 2007 Humantech

Environment Criteria Checklist

Job Name: ___________________________________________________________________

Date: _________________________________ Station: ____________________________

Site: _________________________________ Shift: ______________________________

Dept: _________________________________ Product: ___________________________


Visual

Illumination See Recommended Range of Illuminance table (next page)

________________ Yes No

Glare Eliminate or minimize glare ________________ Yes No

Color Choose colors of uniform

reflectivity for large areas ________________ Yes No

Avoid bright colors ________________ Yes No

Divide large areas by colors togive identity to groups within it ________________ Yes No

Indicator lights follow standardcolor-coding ________________ Yes No

Auditory

Ambient Noise Levels Less than 85 dBA ________________ Yes No

Impact Noises Less than 140 dBA ________________ Yes No

Thermal

Temperature –Light Work

Between 66°F (19°C) and79°F (26°C) ________________ Yes No

Temperature –Moderate Work


Temperature –Heavy Work


Humidity Between 20% and 85% ________________ Yes No

Vibrational

See Characteristicsof Whole-Body andSegmental Vibration(next page)

Eliminate or minimize vibration ________________ Yes No



23

Recommended Range of Illuminance(Adapted from Flynn, 1979)

Range of Illuminance*

Type of Activity or Area

Lux FootcandlesPublic areas with dark surroundings 20-50 2-5

Simple orientation for short temporary visits > 50-100 > 5-9

Working spaces where visual tasks are only occasionally performed > 100-200 > 9-19

Visual tasks of high contrast or large size: reading printed material,typed originals, handwriting in ink, good xerography; rough benchand machine work; ordinary inspection; rough assembly

> 200-500 > 19-46

Visual tasks of medium contrast or small size: reading pencil, poorlyprinted or reproduced material; medium bench and machine work;difficult inspection; medium assembly

>500-1,000

> 46-93

Visual tasks of low contrast or very small size: reading handwritingin hard pencil on poor quality paper, very poorly reproducedmaterial; very difficult inspection

> 1,000-2,000

> 93-186

Visual tasks of low contrast and very small size over a prolongedperiod: fine assembly, high difficult inspection, fine bench andmachine work

> 2000-5000

> 186-464

Very long and exacting visual tasks: the most difficult inspection,extra fine bench and machine work, extra fine assembly

> 5000-10000

> 464-929

Very special visual tasks of extremely low contrast and small size:some surgical procedures

> 10000-20000

> 929-1858

*The choice of a value within the range depends on task variables, reflectance of theenvironment, and the individual's visual capabilities.




Characteristics of Whole-Body and Segmental Vibration Within a Rangeof Safe Transmission

Duration Frequency Range (Hz)

Upper Limit of

Acceleration (m/s

2

)Whole-Body Vibration

1 2.5

4 - 8 1.5

1 hour

80 10

1 0.7

4 - 8 0.3

8 hours

80 3.5

Segmental Vibration

8 - 15 60

80 400

30 minutes

250 1,250

8 - 15 15

80 60

4 to 8 hours

250 200


Documents

EDGE Design checklist