Brick Compressive Strength Test Log (ASTM C67)
Log brick compressive strength test results for sampled fired brick under ASTM C67, with fields for specimen setup, individual results, averages, and compliance disposition.
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Overview
This template is a test log for recording compressive strength results on sampled fired brick tested under ASTM C67. It captures the full chain from inspection identification and specimen preparation through machine verification, measured strength values, and the final compliance decision.
Use it when a project, supplier, or QA program needs documented evidence that a brick lot meets the specified grade or acceptance criterion. It is especially useful for receiving inspection, batch release, submittal verification, and dispute resolution where the individual specimen results matter, not just the average. The log also supports traceability by tying each result to a project, batch, sample ID, and supporting report.
Do not use this as a generic masonry checklist or a field condition survey. It is not meant for visual defects alone, mortar joint inspection, or installation quality checks. If the testing machine calibration is expired, the specimen condition is compromised, or the sample cannot be traced back to the lot, the record should note the deviation and the result should be reviewed before acceptance. The template is designed to make those edge cases visible so the disposition is based on documented evidence rather than memory or informal notes.
Standards & compliance context
- The template is structured to support ASTM C67 documentation for fired brick compressive strength testing and related acceptance review.
- It helps teams document evidence used against the applicable ASTM brick specification and the project’s stated grade requirement.
- Recording machine calibration status and specimen setup supports quality systems aligned with ISO 9001:2015 traceability and control of monitoring equipment.
- For construction projects, the log can be retained as part of material quality records that support contract compliance and submittal review.
- If a result is used in a formal dispute or acceptance decision, keep the supporting report and chain-of-custody record with the log to preserve traceability.
General regulatory context for orientation only — verify current requirements with counsel or the relevant agency before relying on this template for compliance.
What's inside this template
Inspection Identification
This section ties the test result to the correct project, batch, and sample so the record can be traced back without ambiguity.
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Project, batch, and sample identification recorded
Record the project name, lot or batch number, sample ID, and source of the brick sample.
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Inspection date and test location documented
Enter the date and time the test was performed and the laboratory or site location.
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Specified brick grade or acceptance criterion identified
Document the required minimum compressive strength or grade basis used for acceptance, including reference to the applicable specification.
Sample Preparation and Test Setup
This section documents the specimen condition and test setup because preparation details can affect the validity of the compressive strength result.
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Sample count and specimen condition recorded
Record the number of brick specimens tested and note whether specimens were intact, representative, and free of visible damage before testing.
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Specimen dimensions measured and documented
Record measured dimensions used for area calculation, including length, width, and height as applicable.
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Testing machine identification and calibration status verified
Document the compression testing machine ID, calibration date, and verification status before testing.
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Loading surfaces and capping or bedding method documented
Record the specimen orientation, bearing surface condition, and any capping or bedding method used for the compressive strength test.
Compressive Strength Results
This section captures the measured values and summary calculations that drive the acceptance decision.
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Individual specimen compressive strength values recorded
Enter each specimen’s calculated compressive strength result and the corresponding failure load if available.
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Average compressive strength calculated
Record the average compressive strength for the tested sample set.
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Lowest specimen result documented
Record the lowest individual compressive strength result observed during the test set.
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Units of measure confirmed
Select the unit used for reporting compressive strength results.
Compliance Review and Disposition
This section records whether the sample meets the requirement and preserves the reason for any non-conformance or deviation.
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Results meet specified grade requirement
Confirm whether the measured compressive strength results meet or exceed the specified grade requirement.
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Non-conformance or deviation documented when applicable
If results do not meet the requirement, document the deficiency, affected lot, and disposition or corrective action.
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Related observations recorded
Record any additional test observations relevant to the brick sample condition or test outcome.
Sign-Off and Traceability
This section closes the record with accountability, supporting documents, and chain-of-custody details.
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Inspector name and signature completed
Inspector or laboratory representative signs to confirm the accuracy and completeness of the recorded results.
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Reference report or supporting document attached
Attach the test report, data sheet, or supporting evidence for traceability.
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Chain of custody or sample traceability noted
Document the chain of custody, receiving record, or other traceability information for the tested brick specimens.
How to use this template
- Enter the project name, batch or lot ID, sample ID, inspection date, test location, and the specified brick grade or acceptance criterion before the test begins.
- Record the number of specimens, note their condition, measure and document each specimen dimension, and identify the loading surfaces and any capping or bedding method used.
- Verify and record the testing machine ID and calibration status so the result can be tied to a valid test setup.
- Enter each specimen’s compressive strength value, confirm the units, calculate the average, and document the lowest individual result.
- Mark whether the results meet the specified requirement, note any non-conformance or deviation, and add related observations that affect interpretation.
- Complete the inspector sign-off, attach the supporting report or reference document, and note chain-of-custody or sample traceability details.
Best practices
- Record specimen dimensions before loading so the test record shows how the result was derived.
- Capture the testing machine identification and calibration status every time, not only when the equipment changes.
- Document the lowest specimen result alongside the average, because a passing average can still hide a weak individual brick.
- Use consistent units throughout the log and verify them before final sign-off to avoid acceptance errors.
- Note specimen damage, irregular surfaces, or unusual bedding conditions in the observations field instead of leaving them implicit.
- Attach the supporting report, photos, or calibration certificate at the time of entry so traceability is not lost later.
- Treat missing chain-of-custody information as a documentation deficiency that should be resolved before final disposition.
What this template typically catches
Issues teams running this template most often surface in practice:
Common use cases
Frequently asked questions
What does this Brick Compressive Strength Test Log cover?
This template records the identification of the brick sample, specimen preparation details, machine calibration status, individual compressive strength results, and the final compliance decision. It is built for fired brick testing under ASTM C67 and helps you document whether the sampled brick meets the specified grade or acceptance criterion. It also leaves room for related observations, non-conformance notes, and traceability records.
When should I use this log instead of a general inspection form?
Use this log when you need a test record for sampled brick that ties laboratory or field test results to a specific batch, project, or delivery. It is a better fit than a general inspection form when the decision depends on measured compressive strength, specimen condition, and test setup details. If you only need a receiving check for visible damage or count verification, a simpler material inspection form may be enough.
Who should complete the log?
The person running or documenting the test should complete it, typically a lab technician, quality inspector, or materials testing staff member. The sign-off should come from the individual responsible for verifying the results and traceability, with review by QA or the project team if a non-conformance is found. If your organization separates testing and approval, this template supports both roles.
How often should brick compressive strength be logged?
Log it each time a sample set is tested, not as a one-time project document. That usually means per batch, per shipment lot, or per acceptance sample set, depending on your project specification and procurement plan. If a lot is retested after a failure or deviation, create a separate entry so the record stays traceable.
Does this template align with ASTM C67 and related brick specifications?
Yes, it is structured to support ASTM C67 test documentation by capturing the sample identity, specimen preparation, machine status, measured results, and disposition. It also helps you document compliance against the specified brick grade or the applicable ASTM brick specification used on the project. The template does not replace the standard itself; it organizes the evidence needed to show how the result was determined.
What are the most common mistakes this log helps prevent?
Common issues include missing specimen dimensions, unclear units, no record of the testing machine calibration status, and incomplete sample traceability. Another frequent problem is recording only the average strength without the lowest specimen result or individual values, which can hide a weak sample. This log keeps those details together so the acceptance decision is easier to defend.
Can I customize the log for lab software or project workflows?
Yes, you can add fields for lot number, supplier, kiln batch, test method notes, or internal approval routing. Many teams also connect the log to document storage for photos, calibration certificates, and supporting reports. If you use a QMS or LIMS, this template can serve as the front-end record that feeds your controlled document process.
What should I do if a specimen fails the specified grade requirement?
Record the non-conformance clearly, including the failed value, the affected batch or sample ID, and any relevant observations about specimen condition or test setup. Then route the result through your corrective action or material review process instead of overwriting the record. Keeping the failure visible in the log helps preserve traceability and supports disposition decisions such as hold, reject, or retest.
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