Knowledge Hub
Practical QA/QC knowledge you can use on site. New guides are added regularly.
Quick calculators
For quick checks on site. Always confirm against your project's drawings and specifications.
Concrete volume
Slabs, beams and footings (length × width × depth).
Rebar weight
Mass per metre = d² ÷ 162 (d in mm).
Site check guides
The full QA/QC CHECK series, one new check every morning. Written guides for each check are on the way.
Standards explained
Plain-language guides. Always refer to the current official standard for exact requirements.
QA/QC glossary
The terms you will hear on every project.
- QA (quality assurance)
- The planned system of procedures and controls that prevents problems before work starts.
- QC (quality control)
- Checking the actual work, materials and tests against the approved requirements.
- PQP
- Project Quality Plan: how quality will be managed on a specific project.
- ITP
- Inspection and Test Plan: which inspections and tests happen, when, by whom and to what acceptance criteria.
- Hold point
- A stage where work must stop until the inspection is done and released.
- Witness point
- A stage the client or consultant may attend; work can continue if they are notified and do not attend.
- NCR
- Non-Conformance Report: records work or material that does not meet requirements and how it will be resolved.
- CAR
- Corrective Action Request: action to remove the root cause so a non-conformance does not repeat.
- RFI
- Request for Information: a formal question to the designer or consultant to clarify the documents.
- IR / WIR
- Inspection Request / Work Inspection Request: asks the consultant to inspect completed work.
- MIR
- Material Inspection Request: inspection of materials delivered to site against the approved submittal.
- Material submittal
- Product data, samples and certificates submitted for approval before a material is used.
- Method statement
- Step-by-step description of how a task will be carried out safely and correctly.
- Snag list / punch list
- List of minor defects and incomplete items to close before handover.
- As-built drawings
- Drawings updated to show what was actually built.
- Handover dossier
- The complete set of quality records, test certificates and as-builts given to the client.