The phrase "a valid design" is correct and usable in written English.
You can use it when discussing the legitimacy or acceptability of a design in various contexts, such as engineering, architecture, or graphic design.
Example: "After reviewing the proposals, we concluded that only one of them presented a valid design that met all our requirements."
Alternatives: "an acceptable design" or "a legitimate design".
The principle offered "a valid design concept" that all the parties accepted as a foundation for the difficult talks that followed, according to Blair.
Since its introduction, Eurocode 7 has acknowledged the observational method as a valid design approach for geotechnical structures.
Surely, in the case where a favorable starting point is chosen, this method can produce a valid design, but rarely is the best design found in terms of manufacturability.
Double-stage latent heat storage (LHS) unit is believed as a valid design to improve performance by separating LHS unit into two portions filled with different phase-change materials (PCMs).
The paper describes a comparison between numerical results and experimental data recorded within a real tunnel underlining how the developed methodology can be used as a valid design tool for any tunnel ventilation system.
Providing a valid design methodology as a means for predicting the critical parameters of the design procedure is crucial although the fact that the FPSEs are passive.
The temporo-spatial dynamics of risk assessment and reward processing in problem gamblers with a focus on an ecologically valid design has not been examined previously.
Longitudinal studies of patients who experience changes in activity provide a more valid design [ 5, 6].
Accordingly, prior to widespread implementation, the transfer to real-word settings should be evaluated with a scientifically valid design.
We presented Ellustrate, a web application that runs on tablet interfaces, which allows users to sketch similar to other drawing applications yet this tool ensures users develop an electrically valid design, encoding circuit rules for a variety of materials including copper tape, silver ink, graphite paint, and conductive thread.
It incorporates methodological recommendations by Rogers [Researching dissimulation. In: R. Rogers Edd)., Clinical assessment of malingering and deception (pp. 309 327). New York: Guilford Press.] resulting in an ecologically valid design utilizing college students with a history of mild head injury as analog malingerers.
