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Disclaimer

Tools and guides on The Eng Hub are preliminary reference aids. Results must be checked by a competent person against the project information standard, the relevant design code, and the manufacturer’s data where a product is involved.

Nothing here is structural design, electrical design, a clash report, or an appointment under ISO 19650. Beam moments are not section sizes. Voltage-drop estimates are not BS 7671 designs. File-name checks are not certification.

The Eng Hub accepts no liability for losses arising from use of these illustrations. Standards text remains with ISO, BSI and the UK BIM Framework.

The limit on every page

Each result is the arithmetic described on that page. It is not a structural, civil, mechanical or electrical design. It is not a check under the Eurocodes, BS 7671, CIRIA C766 or Approved Document K. Standards text remains with the publisher. A name that passes the file-name checker has matched one pattern. It has not been accepted by an appointing party.

The Eng Hub accepts no liability for losses arising from use of these illustrations. If a number is exchanged, the appointed party is responsible for the container, the revision and the state.

What to write beside the result

A review can only check this figure if the inputs sit next to it. Write the value, the unit and the assumption the form used. A diameter in millimetres and a diameter in metres are not the same reading. A force in kilonewtons divided as if it were newtons is a thousand-fold error.

The result is the arithmetic on this page. It is not a utilisation, not a selected product, and not a clause from a standard. If the number is going into a shared container, name the page, the date and the inputs. The file-name checker does not read the calculation.