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Drafting Central · Engineering Knowledge

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Mechanical, fabrication, fasteners, fits, materials, hydraulics and drafting practice. Answers default to Australian Standards and SI units, and every answer lists its references.

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General information only. This is not engineering advice, design approval or certification. Always check against the current edition of the relevant standard, and have safety-critical designs checked by a qualified engineer (RPEQ in Queensland).

Copyright and standards notice. The Engineering Knowledge Desk provides general educational information and source references. It is not intended to reproduce or replace Australian Standards, ISO standards, handbooks, technical publications or other licensed material. Any authorised quotation or limited source-based explanation is provided only for the stated purpose and is not a substitute for obtaining the current authorised source. References to a standard identify potentially relevant source material only. They are not certification, approval, compliance confirmation, professional engineering advice or evidence that a particular project meets the standard. Users should obtain and check the current authorised source and obtain project-specific advice from an appropriately qualified professional where required. Source attribution does not constitute endorsement by the source owner, publisher, Standards Australia, ISO or any other standards body.
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Good to know

The answers and calculators are for learning, checking your own working and getting started. They are not a certified design. For anything that has to be signed off, built or relied on for safety, talk to us first.