Use the original requirements
Compare function, dimensions, materials, finish, interfaces, maintenance, warranty and applicable evidence against the controlled project specification.
Public Realm & Development · Specification answer
How Should Public-Realm Product Substitutions Be Reviewed?
A visually similar product is not automatically an equivalent product. Substitution should be checked against the reasons the original system was selected.
Planning guidance — final supplied configuration remains project-specific.
Record the change
If a substitution is accepted, update the approved product record so construction, maintenance and future replacement teams know what was actually supplied.
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