Work sequence
Use these pages as a practical method statement layer for the calculator: each stage shows the recommended order of work, inspection points, tools and material consumption ranges that can later feed more precise estimating logic.
Work sequence
Pre-construction turns an uncertain site into a controlled work front. The goal is to verify baseline data, protect access and remove avoidable constraints before long-lead purchasing and main works begin.
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Foundation work should move from verified levels to excavation, base preparation, reinforcement, concrete, waterproofing, drainage and controlled backfill. Skipping checks here makes every later stage more expensive.
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The structure stage must keep load path, geometry, embeds and concrete quality under control. Errors are expensive because they are usually found after walls, services or finishes depend on the frame.
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Roof work is a water-control system, not only a finish. The correct sequence protects slope, membrane continuity, flashings, drains and overflow before leaks become interior damage.
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Rough-in engineering fixes the routes that later disappear behind floors, walls and ceilings. The main risk is not only missing pipes or cables, but conflicts, poor access and untested hidden work.
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Waterproofing succeeds or fails at interfaces: substrate, corners, drains, penetrations and movement joints. The sequence must keep details visible until they are inspected and tested.
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Envelope work closes the building against rain, wind and heat. The high-risk points are openings, flashings, sealant joints and moisture bridges where several trades meet.
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Finishes are visible, but most finish defects start in hidden preparation. The sequence should protect substrate quality, tolerances, joints and curing time before expensive final materials are installed.
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Facade and site works connect the building to climate, drainage and daily access. The sequence must protect the plinth, direct water away from the building and avoid trapping finished areas behind later earthworks.
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Engineering finish turns hidden rough-in into usable systems. The right sequence protects finishes, confirms access and prepares the project for commissioning instead of last-minute troubleshooting.
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Commissioning proves that installed systems work together under realistic operating conditions. It should be planned as evidence-based testing, not as a last-day defect hunt.
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Handover is not only a key exchange. It transfers evidence, access, maintenance responsibility and unresolved risk from the builder to the owner or operator.
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Pool work combines structure, waterproofing, hydraulics, finishes and commissioning. The sequence must protect the shell and water path before tiles, equipment and surrounding landscape make correction expensive.
Open sequenceConsumption ranges are planning benchmarks. Final quantities must be checked against drawings, specifications, local codes and supplier data sheets.
This sequence is connected to the stage calculator, checklist and mistake-cost pages so planning, execution and cost risk stay in one system.