Manual Material Handling Guidelines (this is used for single-task lifts, where task variables do not vary significantly from task to The spreadsheets in this Microsoft Excel Workbook provide guidelines for manua definitions/clarification of terms, hold the mouse over any field that has a r right-hand corner. To use the spreadsheets: 1. Select the tab below that corresponds to the calculation needed (NIOSH Lift 2. For the NIOSH Lifting Guidelines, enter data into the 8 required cells repr 3. For Push, Pull, or Carry Guidelines, select the appropriate input values fr 4. Read the Recommended Weight Limit, Lifting Index, Maximum Acceptable Weight Ó Copyright 2008 by Humantech, Inc.
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Version 5.0
Manual Material Handling Guidelines
(this is used for single-task lifts, where task variables do not vary significantly from task to task or when only one task is of interest (e.g. worst case analysis))
The spreadsheets in this Microsoft Excel Workbook provide guidelines for manual handling tasks. For definitions/clarification of terms, hold the mouse over any field that has a red triangle on the upper right-hand corner. To use the spreadsheets:
1. Select the tab below that corresponds to the calculation needed (NIOSH Lifting Equation, Push, Pull, or Carry)
2. For the NIOSH Lifting Guidelines, enter data into the 8 required cells representing model inputs.
3. For Push, Pull, or Carry Guidelines, select the appropriate input values from the pull-down menus provided.
4. Read the Recommended Weight Limit, Lifting Index, Maximum Acceptable Weight, or Force.
Ó Copyright 2008 by Humantech, Inc.
Revised NIOSH Lifting Guidelines Copyright 2008 by Humantech, Inc.
NIOSH Lifting Guidelines
Job Title
Model Inputs: Enter Data Multipliers: Model Outputs:
Horizontal Location (H) in HM = Recommended Weight Limit (RWL):
(min 10", max 25") (10" is best)
lbVertical Location (V) in VM =
(min 0", max 70") (30" is best) Lifting Index (LI = Load/RWL):
Travel Distance (D) in DM = (min 10", max 70") (10" is best)
0.00
Angle of Asymmetry (A) deg AM =
(min 0°, max 135°) (0º is best) Frequency Independent RWL:
Coupling CM =
(1=good, 2=fair, 3=poor) (1 is best) lb
Duration hr(s) Dur = Frequency Independent LI: (Enter 1, 2 or 8 hrs. only) (1 hour is best)
0.00Frequency l/min FM = (min 0.2, max 15 lifts/min) (0.2 lifts/min is best) Recommendations:
Average Load Weight lb
Maximum Load Weight lb
B20
Horizontal Location: Distance from the ankles to the load center (center of the hands) measured at the beginning of the lift.
G20
Horizontal Multiplier
J20
Recommended Weight Limit (RWL): The amount of weight that can be safely lifted by 99% of men and 75% of women in a population given a specific job geometry, duration and frequency.
B23
Vertical Location: Height of the hands measured from the floor to the center of the hands at the beginning of the lift.
G23
Vertical Multiplier
L25
Lifting Index: Ratio of the load weight to the RWL.
B26
Travel Distance: Vertical travel distance of the hands during lifting.
G26
Travel Distance Multiplier
B29
Angle of Asymmetry: The amount of twisting from the sagittal line (directly in front of the body) measured at the beginning of the lift.
G29
Asymmetry Multiplier
J31
Frequency Independent RWL: When 1 lift or less occurs per 1 hour.
B32
Coupling: Hand-to-object contact when lifting or lowering. Most of the time, fair can be selected. Good -Containers of optimal design (boxes, crates, etc.) with handles or cutouts of optimal design, irregular objects which can be gripped comfortably. Fair - Container with handles or cutouts that are not optimal design, irregular objects that can be gripped with the hand flexed 90°. Poor - Containers of less than optimal design, objects that are hard to handle, objects with sharp edges or slippery.
G32
Coupling Multiplier
B35
Duration: Total length of time the worker is exposed to all lifting tasks. This is a sum of all lifting tasks. One-Hour Duration To be classified as a 1 hour lifting duration, the total exposure to lifting tasks must be less than or equal to 1 hour. Two-Hour Duration A 2 hour lifting duration is the total lifting exposure occurring for more than 1 hour and up to and including 2 hours. Eight-Hour Duration Eight hour lifting duration is the total lifting exposure more than 2 hours up to and including 8 hours of lifting exposure.
G35
Duration Multiplier
J35
Frequency Independent Lifting Index: Ratio of the Maximum Load Weight to the FIRWL
B38
Frequency: Average number of lifts per minute averaged over a 15 minute period. If the lifting frequency varies by more than 2 lifts/minute, each lifting scenario should be analyzed as a separate lifting task.
G38
Frequency Multiplier
B41
Average Load Weight: Average weight of objects being lifted, including container weight.
C43
Maximum Load Weight: Maximum weight of objects being lifted, including container
Revised NIOSH Lifting Guidelines - METRIC Copyright 2008 by Humantech, Inc.
Job Title
Model Inputs: Enter Data Multipliers: Model Outputs:
Horizontal Location (H) cm HM = Recommended Weight Limit (RWL):
(min 25 cm, max 64 cm) (25 cm is best)
KgVertical Location (V) cm VM =
(min 0 cm, max 178 cm) (75 cm is best) Lifting Index (LI = Load/RWL):
Travel Distance (D) cm DM = (min 25 cm, max 178 cm) (25 cm is best)
0.00
Angle of Asymmetry (A) deg AM =
(min 0°, max 135°) (0º is best) Frequency Independent RWL:
Coupling CM =
(1=good, 2=fair, 3=poor) (1 is best) Kg
Duration hr(s) Dur = Frequency Independent LI: (Enter 1, 2 or 8 hrs. only) (1 hour is best)
0.00Frequency l/m FM = (min 0.2, max 15 lifts/min) (0.2 lifts/min is best) Recommendations:
Average Load Weight kg
Maximum Load Weight kg
NIOSH Lifting Guidelines - METRIC
B20
Horizontal Location: Distance from the ankles to the load center (center of the hands) measured at the beginning of the lift.
G20
Horizontal Multiplier
J20
Recommended Weight Limit (RWL): The amount of weight that can be safely lifted by 99% of men and 75% of women in a population given a specific job geometry, duration and frequency.
B23
Vertical Location: Height of the hands measured from the floor to the center of the hands at the beginning of the lift.
G23
Vertical Multiplier
L25
Lifting Index: Ratio of the load weight to the RWL.
B26
Travel Distance: Vertical travel distance of the hands during lifting.
G26
Travel Distance Multiplier
B29
Angle of Asymmetry: The amount of twisting from the sagittal line (directly in front of the body) measured at the beginning of the lift.
G29
Asymmetry Multiplier
B32
Coupling: Hand-to-object contact when lifting or lowering. Most of the time, fair can be selected. Good -Containers of optimal design (boxes, crates, etc.) with handles or cutouts of optimal design, irregular objects which can be gripped comfortably. Fair - Container with handles or cutouts that are not optimal design, irregular objects that can be gripped with the hand flexed 90°. Poor - Containers of less than optimal design, objects that are hard to handle, objects with sharp edges or slippery.
G32
Coupling Multiplier
B35
Duration: Total length of time the worker is exposed to all lifting tasks. This is a sum of all lifting tasks. One-Hour Duration To be classified as a 1 hour lifting duration, the total expousre to lifting tasks must be less than or equal to 1 hour. Two-Hour Duration A 2 hour lifting duration is the total lifting exposure occurring for more than 1 hour and up to and including 2 hours. Eight-Hour Duration Eight hour lifting duration is the total lifting exposure more than 2 hours up to and including 8 hours of lifting exposure.
G35
Duration Multiplier
J35
Frequency Independent Lifting Index: Ratio of the MaximumLoad Weight to the FIRWL
B38
Frequency: Average number of lifts per minute averaged over a 15 minute period. If the lifting frequency varies by more than 2 lifts/minute, each lifting scenario should be analyzed as a separate lifting task.
G38
Frequency Multiplier
B41
Average Load Weight: Average weight of objects being lifted, including container weight.
B43
Maximum Load Weight: Maximum weight of objects being lifted, including container weight.
NIOSH Composite Lifting Guidelines Copyright 2008 by Humantech, Inc.
Job Title
TasksModel Inputs: 1 2 3 4 5 6 7 8 9 10
Average Load Weight lb lb lb lb lb lb lb lb lb lb
Max Load Weight lb lb lb lb lb lb lb lb lb lb
Horizontal Location (H) in in in in in in in in in in
(min 10", max 25")
Vertical Location (V) in in in in in in in in in in (min 0", max 70")
Travel Distance (D) in in in in in in in in in in (min 10", max 70")
Angle of Asymmetry (A) deg deg deg deg deg deg deg deg deg deg
(min 0°, max 135°)
Frequency l/m l/m l/m l/m l/m l/m l/m l/m l/m l/m
(min 0.2, max 15 lifts/min)
Duration hr(s) hr(s) hr(s) hr(s) hr(s) hr(s) hr(s) hr(s) hr(s) hr(s)
(1 hr., 2 hrs., 8 hrs.)
Coupling
(1=good, 2=fair, 3=poor)
TasksModel Results: 1 2 3 4 5 6 7 8 9 10
STRWL 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ######
FIRWL 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ######
STLI 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ######
FILI 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ######
CLI = 0.00 ######
NIOSH Composite Lifting Guidelines (scroll down to view results)
B21
Average Load Weight: Average weight of object being lifted, including container weight.
B23
Maximum Load Weight: Maximum weight of object being lifted, including container weight.
B25
Horizontal Location: Distance from the ankles to the load center (center of the hands) measured at the beginning of the lift.
B28
Vertical Location: Height of the hands measured from the floor to the center of the hands at the beginning of the lift.
B31
Travel Distance: Vertical travel distance of the hands during lifting.
B34
Angle of Asymmetry: The amount of twisting from the sagital line (directly in front of the body) measured at the beginning of the lift.
B37
Frequency: Average number of lifts per minute (averaged over a 15 minute period).
B40
Duration: Length of time the worker is exposed to each specific lifting task (i.e. duration must be calculated independently for each lifting task). Duration is determined by calculating the exposure to each specific lift, as well as the recovery time following the lift and preceeding the next lift. To be classified as a 1 hour lift, the lifting task must be followed by a recovery time equal to 1.2 times the work time. A 2 hour lift must be followed by a recovery time 0.3 times the work time and any work time that exceeds 2 hours should be classified as an 8 hour lifting task.
B43
Coupling: Hand-to-object contact when lifting or lowering. Most of the time, fair can be selected.
B50
Single Task Recommended Weight Limit: RWL calculated assuming it is the only task being performed. Note that this value does not reflect the overall demands of the task when the other tasks are considered.
B52
Frequency Independent Recommended Weight Limit: RWL calculated without taking frequency into account - used for infrequent lifts less than 0.2 lifts/min. Essentially, a one-time lift.
B54
Single Task Lifting Index: Ratio of load weight to the STRWL.
B56
Frequency Independent Lifting Index: Ratio of load weight to the FIRWL.
O58
Composite Lifting Index: Lifting Index representing the collective demands of the job, equal to the sum of the largest STLI and the incremental increases in the CLI as each subsequent task is added.
NIOSH Composite Lifting Guidelines - METRIC Copyright 2008 by Humantech, Inc.
Job Title
TasksModel Inputs: 1 2 3 4 5 6 7 8 9 10
Average Load Weight Kg Kg Kg Kg Kg Kg Kg Kg Kg Kg
Max Load Weight Kg Kg Kg Kg Kg Kg Kg Kg Kg Kg
Horizontal Location (H) cm cm cm cm cm cm cm cm cm cm
(min 25 cm, max 64 cm)
Vertical Location (V) cm cm cm cm cm cm cm cm cm cm (min 0 cm, max 178 cm)
Travel Distance (D) cm cm cm cm cm cm cm cm cm cm (min 25 cm, max 178 cm)
Angle of Asymmetry (A) deg deg deg deg deg deg deg deg deg deg
(min 0°, max 135°)
Frequency l/m l/m l/m l/m l/m l/m l/m l/m l/m l/m
(min 0.2, max 15 lifts/min)
Duration hr(s) hr(s) hr(s) hr(s) hr(s) hr(s) hr(s) hr(s) hr(s) hr(s)
(1 hr., 2 hrs., 8 hrs.)
Coupling
(1=good, 2=fair, 3=poor)
TasksModel Results: 1 2 3 4 5 6 7 8 9 10
STRWL 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ######
FIRWL 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ######
STLI 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ######
FILI 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ######
CLI = 0.00 ######
NIOSH Composite Lifting Guidelines - METRIC (scroll down to view results)
B21
Average Load Weight: Average weight of object being lifted, including container weight.
B23
Maximum Load Weight: Maximum weight of object being lifted, including container weight.
B25
Horizontal Location: Distance from the ankles to the load center (center of the hands) measured at the beginning of the lift.
B28
Vertical Location: Height of the hands measured from the floor to the center of the hands at the beginning of the lift.
B31
Travel Distance: Vertical travel distance of the hands during lifting.
B34
Angle of Asymmetry: The amount of twisting from the sagital line (directly in front of the body) measured at the beginning of the lift.
B37
Frequency: Average number of lifts per minute (averaged over a 15 minute period).
B40
Duration: Length of time the worker is exposed to each specific lifting task (i.e. duration must be calculated independently for each lifting task). Duration is determined by calculating the exposure to each specific lift, as well as the recovery time following the lift and preceeding the next lift. To be classified as a 1 hour lift, the lifting task must be followed by a recovery time equal to 1.2 times the work time. A 2 hour lift must be followed by a recovery time 0.3 times the work time and any work time that exceeds 2 hours should be classified as an 8 hour lifting task.
B43
Coupling: Hand-to-object contact when lifting or lowering. Most of the time, fair can be selected.
B50
Single Task Recommended Weight Limit: RWL calculated assuming it is the only task being performed. Note that this value does not reflect the overall demands of the task when the other tasks are considered.
B52
Frequency Independent Recommended Weight Limit: RWL calculated without taking frequency into account - used for infrequent lifts less than 0.2 lifts/min. Essentially, a one-time lift.
B54
Single Task Lifting Index: Ratio of load weight to the STRWL.
B56
Frequency Independent Lifting Index: Ratio of load weight to the FIRWL.
O58
Composite Lifting Index: Lifting Index representing the collective demands of the job, equal to the sum of the largest STLI and the incremental increases in the CLI as each subsequent task is added.
Push Guidelines Copyright 2008 by Humantech, Inc.
Push Guidelines
Gender
Height
Percent
Distance
Frequency
Maximum Acceptable Initial Force
Information is still missing
Maximum Acceptable Sustained Force
Information is still missing
B7
Gender: Gender of the employee performing the push
B10
Height: Height of the hands from the standing surface while performing the push.
B13
Percent: Percentage of the population capable (perceptually) of performing the push.
B16
Distance: Distance of the push from initial position to final position
B19
Frequency: Frequency of the push
Pull Guidelines Copyright 2008 by Humantech, Inc.
Pull Guidelines
Gender
Height
Percent
Distance
Frequency
Maximum Acceptable Initial Force
Information is still missing
Maximum Acceptable Sustained Force
Information is still missing
B7
Gender: Gender of the employee performing the pull
B10
Height: Height of the hands from the standing surface while performing the pull
B13
Percent: Percentage of the population capable (perceptually) of performing the pull.
B16
Distance: Distance of the pull from the initial position to the final position
B19
Frequency: Frequency of the pull
Carry Guidelines Copyright 2008 by Humantech, Inc.
Carry Guidelines
Gender
Height
Percent
Distance
Frequency
Maximum Acceptable Weight
Information is still missing
B7
Gender: Gender of the employee performing the carry
B10
Height: Height of the hands from the standing surface while performing the carry
B13
Percent: Percentage of the population capable (perceptually) of performing the carry
B16
Distance: Distance of the carry
B19
Frequency: Frequency of the carry
Related Documents
