Plan: map, jobs, dates, safety
A good project starts on paper.
- Aim: one clear sentence, for example "A 6 m path and one bench by Friday week 3".
- Map: draw the site from above with sizes.
- Job list and dates: mark the site, level, lay gravel and sand, lay stones, set the bench, clean up.
- Materials and cost: list quantities (see the volume of gravel) and the budget.
- People and tools: who does what.
- Safety and quality: helmets and gloves, a measuring plan with tolerance.
Do: work and record
Work safely in the planned order and keep a site diary.
- Date, weather, who worked.
- What was done and how much (for example 3 m of path).
- Materials used and bought.
- Problems and changes.
- Photos of each stage before it is covered.
A diary that is written the same day is much more reliable than one written from memory later.
Check: compare with the plan
Compare the real result with the plan in three ways.
- Time: planned days against real days.
- Quality: width, level and thickness against the tolerance.
- Cost: planned budget against real spending.
- Safety: any accidents or near-misses?
Write numbers, not feelings. "Path 1.1 m, target 1.2 m, tolerance 5 cm: fails by 5 cm" is useful.
Act: fix and improve
For every gap, find the cause (ask why, then why again), choose an action, do it and check again.
- Fix the product now (lift and relay the stone).
- Fix the plan for next time (add a day for rain, order materials earlier).
- Share what you learned with the team.
Report and review
A short report has: aim, map, photos, measurements against plan, cost, what went wrong and why, and what to do better next time. Present it to the class or teacher and listen to questions. This is how a project teaches more than a lecture.
Try it: run a mini project
Choose a small outdoor job at school, such as a stepping-stone path of 6 stones. Do Plan, Do, Check, Act, and write a half-page report. In the 3D above, pick each problem and compare your idea with the suggested action.
Key formulas and definitions
- PDCA = Plan, Do, Check, Act
- Check three things: time, quality (with tolerance), cost
- Site diary = date, weather, work, materials, problems, photos
- Gap = real - plan; find the cause, then act
Worked examples
1. A path was planned 1.2 m wide with a tolerance of plus or minus 5 cm. The built width is 1.1 m. Does it pass?
The allowed range is 1.15 to 1.25 m. 1.10 m is outside, so it fails. Reset the edge stones to widen it.
2. A 6-stone path was planned for 3 days and took 4 days. What is the delay and what could be a cause?
Delay = 4 - 3 = 1 day. A possible cause is rain or late material. Write the cause and plan an extra day next time.
3. You planned to spend 1200 rupees and spent 1350. What is the gap in cost and percent?
Gap = 150 rupees. Percent = 150 / 1200 x 100 = 12.5 percent over.
4. Write one line of a good diary entry.
"12 Aug, sunny, 5 students: laid 3 m of gravel base, used 2 bags, one barrow broke."
Common mistakes
- Starting work with no map or job list.
- Writing the diary from memory at the end.
- Writing "looks fine" instead of measuring.
- Fixing the stone but never changing the plan, so the same problem returns.