| Assumptions |
|
|
Vertical reach:
Shelf heights are 10cm, 50cm, 90cm
and 130cm above the ground. |
If shelf heights
between 10 and 150cm, use shelf that most closely matches.
If shelf heights are at 0cm or
between 150 and 175 cm reduce weight.
If shelf heights above 175cm –
no lifting should occur from that height. |
If shelf heights
are lower than ground level = reassess |
Horizontal reach:
Reach distances are 30cm to first
box, 50cm to second box and 63cm to third box on shelf |
If reach distances
are increased – reduce weight |
If reach distance
decreased - reassess |
Frequency and
duration:
1 lift every 2 minutes for a duration
of 2 hours |
If frequency increased
– reduce weight
If duration increased – reduce
weight
If duration is for more than 8
hours - reassess |
If frequency decreased
– reassess
If duration decreased - reassess |
Size of person
in shoes:
Stature – 169 cm
Shoulder height – 140 cm
Elbow height – 110 cm
Knuckle height – 76 cm
Knee height – 47 cm
Mid lower leg – 36 cm |
|
|
Twisting:
No twisting during lifting |
If any twisting
occurs – reduce weight |
|
Object size:
Compact, evenly distributed load
lifted using two hands with good hand holds. |
If load is large,
unstable or difficult to handle – reduce weight.
If there are poor hand holds –
reduce weight.
If load lifted by one hand only
– reduce weight. |
|
Technique:
Object lifted:
- with two hands; and
- using a recognised lifting technique;
and
- from a specific position detailed
in the diagram; and
- with ample space to lift object;
and
- placed onto a table or belt and
knuckle height; and
- no precision placement is required
- with no more than two steps taken;
and
- on good floor surfaces; and
- in good environmental conditions. |
If item is placed
on the ground or at height – reassess
If more than two steps are taken
– reassess
If object lifted while kneeling
– reassess
If lifting occurs in restricted
space – reassess
If lifting occurs on slippery floors
– reassess
If precision placement of the object
is required - reassess
If lifting occurs in an unfavourable
environment (i.e. 19–26oC, relative humidity 35-50%) - reassess |
If object slid
close to the body before lifting – use weights for first box. |
Speed:
Lifting and lowering is conducted
at a slow speed. |
If lifting or lowering
occurs at a speed of 75cm per second or more - reassess |
|
Destination
of lift:
Object lifted from shelf and placed
without precision onto a belt or pallet or trolley at knuckle
height while close to the body. |
Object placed to
a position below knee height or above elbow height – reduce
weight. |
|
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