The Life Starter
0 of 6 complete0%
Course Library · Lesson 4 of 6
Work · Guided lesson

Offset lead times from the required assembly date

About 13 minutes · 3 reading + 10 practice and checks
Time includes reading, practice, and questions. Extra videos or further study are optional.
See this course’s project requirements

A two-level paper bill-of-materials explosion, net material requirement sheet, batch release decision and revised production packet for fictional stationery kits.

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • Save a v1 gross-material explosion grouped by component; include the original-case decision evidence and a separate changed-case result.
  • Net loose stock and save the dependency calculation; include the original-case decision evidence and a separate changed-case result.
  • Write a Day3 shortage register with excluded supply reasons; include the original-case decision evidence and a separate changed-case result.
  • Save the dated dependency schedule and late-order flag; include the original-case decision evidence and a separate changed-case result.
  • Save the v2 shortage with EC2 link and superseded v1 value; include the original-case decision evidence and a separate changed-case result.
  • Assemble the versioned manufacturing-planning packet; include the original-case decision evidence and a separate changed-case result.

Review and revise

Use these criteria to check your work and choose what to improve.

  • The final packet uses the supplied task-specific constraints and all six records agree.
  • Every result can be traced to an identifier, input, calculation or stated decision rule.
  • Changed-case practice updates dependent records and keeps holds or uncertainty visible.
  • The packet states the learner role, authority boundary and specific next verification needed before real work.
Open the full course project
Want more background?
Before you begin

The idea in everyday life

Original fictional workplace practice; paper or a local document is sufficient. The rules and records below are supplied for this exercise, not asserted universal workplace policy. Spruce final assembly K takes 1 planning day and must finish Day8. A takes 2 days and T takes 1 day, both needed at final assembly start. Loose C procurement lead time is 3 days and P is 2 days; both needed when A starts. Exercise convention: start day plus duration equals finish day; no weekends.

The idea

Backward scheduling subtracts supplied lead times along dependencies; it does not make a late receipt timely merely by changing a calendar label.

Follow along

Offset lead times from the required assembly date — worked practice

Backward scheduling subtracts supplied lead times along dependencies; it does not make a late receipt timely merely by changing a calendar label.

Spruce final assembly K takes 1 planning day and must finish Day8. A takes 2 days and T takes 1 day, both needed at final assembly start. Loose C procurement lead time is 3 days and P is 2 days; both needed when A starts. Exercise convention: start day plus duration equals finish day; no weekends. Use paper or a local document. Preserve the original case and make a separate changed-case record.

  1. 1. Step 1

    Subtract final assembly duration from Day8.

    You should see: K begins Day7; A/T must be ready Day7.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  2. 2. Step 2

    Offset A and T durations independently.

    You should see: A begins Day5; T begins Day6.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  3. 3. Step 3

    Offset component procurement for the earlier A need.

    You should see: C order by Day2; P by Day3 for arrival Day5.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

  4. 4. Step 4

    Save the dated dependency schedule and late-order flag.

    You should see: A schedule linking Day2 C/Day3 P orders, Day5 A, Day6 T and Day7 K start.

    Keep the stated identifier, unit and policy alongside this result so another reader can check it.

Now change one thing

C lead time becomes 4 days while its required arrival remains Day5. On what day must its order be released?

Your work

What to finish

Save the dated dependency schedule and late-order flag; include the original-case decision evidence and a separate changed-case result.

Common mistake

Watch for this

Scheduling each material against final completion instead of its own earlier dependent start.

How can I tell I understand it?

Using the supplied identifiers, I can save the dated dependency schedule and late-order flag. My changed-case record names the revised condition and explains which dependent decision it changes.

Try 3 questions

Quick knowledge check

Answer all 3 questions. Get at least 2 right and the lesson completes automatically.

Not yet passed

You’ll get an explanation for each answer. Signed in? Your results save to your account.

1Spruce final K duration is one day with required finish Day8. What is the planned start day?
2A takes two days and must finish Day7. What day does A start?
3C takes three days to procure and is needed Day5. A Day3 release would arrive when?
0 of 3 answeredApply the lesson to a short question, then review the explanation.
4
Finish this lesson

Pass the check. We’ll save the progress.

Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.

Go to the knowledge check
Tools, templates, and lesson sources

Tools and templates

Tools open in a new tab so you can keep your place here.

Sources and further reading

Explore the references behind this lesson.

43-5061.00 - Production, Planning, and Expediting Clerks
Source & access notes · checked 2026-10-01

Occupational task and responsibility context; the exercise policies and quantities are original fictional inputs. Page title and relevant content inspected; no interactive controls or credential process tested.

Access: Readable official page retrieved with the web reader on 2026-10-01.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

moodle.skills commons.org — view.php?id=30
Source & access notes · checked 2026-10-01

Public agency or educational context; no source exercises are copied and no simulated threshold is presented as an official rule. The direct-access limitation is preserved; official search-retrieved context supports the stated scope only.

Access: Official primary-page summary was available in web search; direct page retrieval was blocked in this environment. Full page and interactive operation are not claimed.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

moodle.skills commons.org — view.php?id=46
Source & access notes · checked 2026-10-01

Public agency or educational context; no source exercises are copied and no simulated threshold is presented as an official rule. The direct-access limitation is preserved; official search-retrieved context supports the stated scope only.

Access: Official primary-page summary was available in web search; direct page retrieval was blocked in this environment. Full page and interactive operation are not claimed.

Reuse: All teaching cases, data, worked steps and questions are original. Link and limited paraphrase for context; no copied source exercises.

Report a problem with this lesson

Tell us what went wrong. Please leave out personal information and private project contents.

No sign-in needed.