A fifty-pound sack lift scores 4.22 on the revised NIOSH lifting equation before redesign, and PU635's Unit 7 ergonomic assessment then reruns it until it falls below 1.0. Searches like "pu 635 unit 7 assignment example", "pu635 unit 7 sample" and "pu635 unit 7 example" land here.
What a finished PU635 Unit 7 ergonomic assessment looks like
Seven pages long, the assessment opens on the task description, with a sketch showing the pallet, the worker's path and the hopper rim at 44 inches. A measurement table follows, giving every input at origin and destination: horizontal distance of 18 and 22 inches, vertical height of 10 and 44, a travel distance of 34, asymmetry of 0 and 60 degrees, a frequency of 0.4 lifts a minute rounded up to the 0.5 row, a shift-long duration and fair coupling. The six multipliers and the recommended weight limit are shown for each end: 16.2 pounds at the origin and 11.9 at the rim, giving lifting indices of 3.09 and 4.22. Two redesign scenarios repeat the arithmetic in full. A symptom survey of the eight mixing-room workers and the injury log close the assessment.
How a PU635 Unit 7 example is structured
The equation organizes the paper, and every input is measured or estimated before any multiplier is computed. Origin and destination are both analyzed, since tipping a sack into the hopper requires control at the rim, and the destination proves worse because of the reach and the twist. Each multiplier is then read as a cause: the 22-inch reach and the 60-degree turn account for most of the loss. That diagnosis drives the first redesign, a lift table holding the pallet top at 30 inches and a bag-dump station with a 36-inch sill set directly beside the operator, which brings the worst index to 1.69. Frequency and the 50-pound load still keep it above 1.0, so the second scenario switches to 25-pound sacks, doubling the lifts, and reaches 0.92 at the origin and 0.82 at the station. Limits of the equation close the analysis.
Every input measured first
Horizontal reach, heights, travel distance, twist, frequency, duration and grip are measured with a tape and a stopwatch over three batch cycles. The table records each value before any arithmetic appears, so a reader can recompute every multiplier.
Why the rim is worse than the floor
The origin index of 3.09 reflects a low start; the destination index of 4.22 reflects a long reach over the hopper and a 60-degree twist. Naming the multipliers behind each figure tells the redesign what to change.
Redesign one, by engineering
A lift table keeps the pallet top at 30 inches and a dump station with a 36-inch sill sits beside the worker, so the reach shortens and the twist disappears. The worst index falls to 1.69.
Redesign two, by package size
Twenty-five-pound sacks halve the load and double the lifts, which lowers the frequency multiplier yet still brings both ends under 1.0. The paper notes that suppliers charge more per pound for smaller sacks and prices the difference.
What the equation leaves out
The lifting equation does not model one-handed lifts, carrying over distance or slippery floors, and it predicts risk for a working population rather than for one person. The paper states these limits before recommending anything.
Where marks go in PU635 Unit 7
Anyone grading this assessment can recompute it, and much of its credit comes from that. Every input is measured, both ends of the lift are analyzed, and each multiplier, recommended weight limit and index is printed, with the frequency rounded up to the correct table row. The strongest credit sits in the link to control: redesigns are chosen by reading which multipliers cost the most, then rerun through the equation instead of assumed to work. Symptom survey data and the injury log add a second line of evidence that most rubrics reward. Deductions on this assessment follow familiar lines: an origin computed and a destination ignored, inputs guessed without saying so, back belts or lifting training offered as controls, and a lifting index reported with no interpretation.
Get a PU635 Unit 7 example written to your instructions
Weights, heights, reach, frequency and shift length for the lifting task matter most, so include whatever is known, along with the instructions and rubric for PU635 Unit 7. The free first custom sample computes the lifting equation at both ends, names the multipliers driving the risk, reruns each redesign through the same arithmetic, and is ready in 24-48 hours.
PU635 Unit 7 questions, answered
What does a lifting index above 1.0 mean?
It means the load exceeds the recommended weight limit for that task, which NIOSH treats as increased risk of lifting-related low back pain for some share of workers. Higher values mean more workers at risk. The index is a planning tool for comparing tasks and redesigns, not a diagnosis for any one person, and a paper should present it that way.
Should I analyze both the origin and the destination?
When the lift requires control of the load at the destination, such as placing, aligning or tipping it, yes, and the higher index governs. Many student assessments analyze only the pickup and miss that the placement is worse. If the destination needs no control, say so and explain why only the origin is analyzed.
Is the lifting equation enough for an ergonomic assessment?
It covers two-handed lifting and lowering only. Pushing, pulling, carrying, repetitive hand work and awkward static postures need other tools, and many assessments pair the equation with a symptom survey or injury records. Where your prompt asks about a whole job rather than one task, name which tool applies to which part and why.