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To establish the requirments, design issues should be identified and expressed in the form of requirements. Figure 4 shows generic structural design issues.
To establish the requirments, design issues should be identified and expressed in the form of requirements. Figure 4 shows generic structural design issues.
[[File:Issues-1.png|none|thumb|700x700px|Figure 4 Generic structural design issues]]
[[File:Issues-1.png|none|thumb|700x700px|Figure 4 Generic structural design issues]]
''Principles''
''<big>Principles</big>''


Work to a process for establishing the brief
* Work to a process for establishing the brief
* Ensure that all requirements have been identified and adequately stated in the Structural Design Brief


Ensure that all requirements have been identified and adequately stated in the Structural Design Brief
''<big>Recommended Verbal forms to be used in the brief</big>''  (from GG 101-page 4)


''Recommended Verbal forms to be used in the brief''  (from GG 101-page 4)
* The verb ’must’ indicates a statutory or legislative requirement.
 
* The verb ’shall’ indicates a requirement of the Overseeing Organisation.
• The verb ’must’ indicates a statutory or legislative requirement.
* The verb ’should’ indicates advice expressed as a recommendation.
 
* The verb ’may’ indicates advice expressed as a permissible approach.
• The verb ’shall’ indicates a requirement of the Overseeing Organisation.
* The verb ’can’ or verbs expressed in the present tense other than ’must’, ’shall’, ’should’ and ’may’ are used to introduce notes, which provide a short clarification of a concept or statement of fact.
 
• The verb ’should’ indicates advice expressed as a recommendation.
 
• The verb ’may’ indicates advice expressed as a permissible approach.
 
• The verb ’can’ or verbs expressed in the present tense other than ’must’, ’shall’, ’should’ and ’may’ are used to introduce notes, which provide a short clarification of a concept or statement of fact.


==== Using the design brief ====
==== Using the design brief ====
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==== Option analysis ====
==== Option analysis ====


Develop a set of options to a degree of detail sufficient to assess them against the requirements. Compare them against the requirements and decide on the form of the structure to be used.
''<big>Principles</big>''


Develop a set of options to a degree of detail sufficient to assess them against the requirements. Compare them against the requirements and decide on the form of the structure to be used.
* At the outset, all options should be 'on the table'.
* Select a set of 'candidate options' that have potential to meet the requirements
* Carry out partial designs for these options to provide information adequate for assessing their relative merits.
* Assess the options using [https://eit.engineers.scot/index.php?title=Critical_thinking#Proposal_testing proposal testing] principles.
* Consider using a multi-criteria assessment method [https://eit.engineers.scot/images/d/db/Ch2_evaluating-design-options.pdf more]
*
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