Project inputs
Use realistic pace numbers from your crew’s past jobs.
Formula used
This calculator estimates time from pace and adjustment factors.
- Effective crew rate = Base pace per worker × Crew size × (Efficiency/100) × Difficulty factor
- Production hours = Total length ÷ Effective crew rate
- Total hours = (Production hours + Setup + Delays) × (1 + Contingency/100)
- Days = Total hours ÷ Workday hours
- Length with waste = Total length × (1 + Waste/100)
- Total cost = (Labor rate × Total hours + Material cost × Length with waste) × (1 + Overhead/100)
How to use this calculator
- Pick your unit system and enter total edging length.
- Enter base pace per worker from recent, similar jobs.
- Set crew size, then adjust efficiency and difficulty.
- Add setup time and expected delays or breaks.
- Choose a contingency that matches project uncertainty.
- Optional: add labor and material costs for a budget view.
- Press Calculate and export your summary when needed.
Example data table
| Scenario | Length | Pace / Worker | Crew | Efficiency | Difficulty | Total Hours | Days |
|---|---|---|---|---|---|---|---|
| Straight runs, easy access | 120 m | 10 m/hour | 2 | 90% | 1.10 | 6.31 | 0.79 |
| Curves, obstacles, hand finishing | 120 m | 10 m/hour | 2 | 80% | 0.85 | 9.46 | 1.18 |
| Long project, bigger crew | 250 m | 9 m/hour | 3 | 85% | 1.00 | 11.99 | 1.50 |
Edging time planning article
1) Why edging time estimates matter
Edging looks simple, yet production varies with layout, access, and finish quality. Reliable time estimates protect margins, prevent rushed workmanship, and keep adjacent trades moving. By translating linear length into crew hours, supervisors can schedule labor and tools.
2) Understanding linear scope
Start with total linear length along curbs, garden beds, paving edges, or formwork lines. Split the scope into straight runs and tighter curves because turns increase handling and alignment time. When drawings are unavailable, measure on site and add segments for returns and tie-ins.
3) Setting a realistic base pace
Base pace is the hourly output for one worker. Use job history whenever possible: record length installed or cut, then divide by actual hours. Typical paces differ by material and method; staking rigid edging often slows compared with flexible rolls, while saw-cutting in hard concrete is slower than in softer mixes.
4) Crew size and coordination
More people do not always mean proportionally faster results. A two-person crew often balances layout and fastening efficiently, while larger crews may face congestion around tight edges. This calculator scales production by crew size, and the efficiency setting captures coordination loss, tool sharing, and site constraints.
5) Efficiency and difficulty factors
Efficiency represents how close field work stays to the planned pace, accounting for routine slowdowns. Difficulty factor adjusts for conditions such as dense utilities, heavy roots, uneven subgrade, or complex curves. Use values below 1.00 for harder conditions and above 1.00 for clean, open runs.
6) Setup, delays, and contingency
Edging tasks include prep: string lines, marking, staging, and cleanup. Add setup hours for mobilization and alignment. Delays cover breaks, interruptions, or minor rework. Contingency is a controlled buffer for risk; small jobs may need higher contingency because one obstacle can consume significant time.
7) From hours to days and costs
Total hours become days using your chosen workday length. This supports practical scheduling across sites or phases. For costing, labor is total hours multiplied by the blended hourly rate. Material cost is applied to length including waste, which helps avoid short orders and costly mid-job deliveries.
8) Using exports for field control
After calculating, export results as CSV or PDF for bid files, daily plans, and change documentation. Keeping inputs and assumptions—pace, efficiency, and contingency—creates a repeatable estimating process. Over time, comparing predicted versus actual hours helps refine base pace and improve future schedules.
FAQs
1) What is a good starting pace per worker?
Use your own history first. If you have none, start conservatively, then adjust after a small test section. Record measured length and time, and update the pace for similar materials and site conditions.
2) Why does efficiency reduce production?
Efficiency captures real-world losses: tool moves, alignment checks, minor corrections, and coordination. A plan-rate assumption of 100% is rare on active sites, so using 70–90% often produces more reliable schedules.
3) When should I use a difficulty factor below 1.00?
Use below 1.00 for tight curves, frequent corners, obstructions, hard material, poor access, or strict finish requirements. These conditions reduce hourly output even if the crew is experienced and well equipped.
4) How do I choose contingency?
Match contingency to uncertainty. Add more for unknown underground items, weather exposure, and first-time crews. Add less when scope is repetitive, access is controlled, and you have strong production data.
5) Does a bigger crew always finish faster?
Not always. More workers can help on long straight runs, but tight spaces can create interference and waiting. Increase crew size only when there is enough parallel work and sufficient tools to avoid bottlenecks.
6) How should waste allowance be used?
Waste covers cuts, bends, and mistakes. For rigid materials with more trimming, waste may be higher. For flexible rolls, waste may be lower. Track leftover material to calibrate your typical waste percent.
7) Can I use this for saw-cut edging lines?
Yes. Treat the “total length” as the cutting length and set a base pace per worker that reflects your saw, blade condition, and concrete hardness. Increase delays for water management, slurry cleanup, and traffic control.
Use these results to schedule crews and materials confidently.