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Design Basis vs. Design Criteria

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Alma A. Mississauga, Ontario, Canada
Hello. Could someone give a clear explanation and example of the difference between the Basis of Design and Design Criteria? Thank you very much!
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Rami Kaibni
Community Champion
Senior Projects Manager | Field & Marten Associates New Westminster, British Columbia, Canada
Alma

Design Basis includes information on the project and explains the specific functions of a system, client expectations, and why the systems were selected and designed.

The Design Criteria usually only include a list of expected design parameters that should be met (i.e. the explicit goals that a project must achieve in order to be successful).

In terms of examples, I will give you one related to construction:

Design Criteria: "The project must meet sustainability requirements and building code 2023".

Design Basis: "The client expects the project to contribute to a greener planet'.

Hope this helps.

RK
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1 reply by Alma A.
Mar 21, 2023 10:15 PM
Alma A.
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Thank you, Rami - I appreciate it.
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Alma A. Mississauga, Ontario, Canada
Mar 21, 2023 5:08 PM
Replying to Rami Kaibni
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Alma

Design Basis includes information on the project and explains the specific functions of a system, client expectations, and why the systems were selected and designed.

The Design Criteria usually only include a list of expected design parameters that should be met (i.e. the explicit goals that a project must achieve in order to be successful).

In terms of examples, I will give you one related to construction:

Design Criteria: "The project must meet sustainability requirements and building code 2023".

Design Basis: "The client expects the project to contribute to a greener planet'.

Hope this helps.

RK
Thank you, Rami - I appreciate it.
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Alma A. Mississauga, Ontario, Canada
Hi Rami,

Is it a requirement of a Project to include both as deliverables?

Thank you.
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1 reply by Rami Kaibni
Mar 27, 2023 12:13 PM
Rami Kaibni
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Of course, you have to. Design Criteria is usually set during initiation and then Design Basis during early planning/design phase.

One depends on the other. If you don't have a criteria, how can you develop a basis?

Hope this helps.
avatar
Rami Kaibni
Community Champion
Senior Projects Manager | Field & Marten Associates New Westminster, British Columbia, Canada
Mar 27, 2023 12:06 PM
Replying to Alma A.
...
Hi Rami,

Is it a requirement of a Project to include both as deliverables?

Thank you.
Of course, you have to. Design Criteria is usually set during initiation and then Design Basis during early planning/design phase.

One depends on the other. If you don't have a criteria, how can you develop a basis?

Hope this helps.
avatar
Alma A. Mississauga, Ontario, Canada
Thank you very much, Rami.
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1 reply by Rami Kaibni
Mar 27, 2023 1:24 PM
Rami Kaibni
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You're welcome. Happy to help.
avatar
Rami Kaibni
Community Champion
Senior Projects Manager | Field & Marten Associates New Westminster, British Columbia, Canada
Mar 27, 2023 1:20 PM
Replying to Alma A.
...
Thank you very much, Rami.
You're welcome. Happy to help.
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Latha Thamma reddi Sr Product and Portfolio Management (Automation Innovation)| DXC Technology Mckinney, Tx, United States
Thank you for the information.

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