Decision guides for real engineering problems.
Use these guides when the issue is not just a calculator input or a single standard number. They help structure repair, modification, inspection, assessment and evidence decisions.
AS 3990 vs AS 4100
A practical comparison of mechanical equipment steelwork and structural steelwork design pathways.
Open guide →02Repair vs modification
How to separate restoration work from changes that create a new engineering basis.
Open guide →03How should cracked mechanical equipment be assessed?
A staged process from immediate risk control and evidence preservation to NDT, root cause and permanent repair.
Open guide →04MPI, UT or dye penetrant?
How to match defect type, material, access and inspection purpose to the right NDT discussion.
Open guide →05Repair, replace or reinforce?
A structured comparison of restoration, replacement and load-path-changing reinforcement options.
Open guide →06Temporary repair or permanent repair?
How to separate controlled short-term risk reduction from a durable engineering solution.
Open guide →07Should damaged equipment be quarantined?
A first-response framework for full quarantine, restricted operation or controlled continued service.
Open guide →08When is detailed FEA justified?
How to decide whether finite element analysis will materially improve the engineering decision.
Open guide →09How should an existing building ventilation system be assessed?
Combine current room use, drawings, BMS data, airflow measurements and occupant evidence into a defensible ventilation assessment.
Open guide →10How should an HVAC modification be reviewed?
Check normal ventilation, fire mode, microbial control, maintenance access, controls and recommissioning before changing HVAC plant.
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