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Structural design processes: Difference between revisions

Structural design processes (view source)

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Design involves the integration of a range of process - see <u>process mapping</u>.
Structral design requires the use of [[System Planning|system planning]] i.e. the overal process and the sub-processes need to be optimised.
 
The simple model of:
 
          Input ----->  process  -----> outcomes
 
prompts the observation that deep focus on the quality of the inputs and quality of the processes is critical for achieving successful outcomes.  Designers therefore need to work hard to ensure that the inputs and processes that they use are the most appropriate that can be devised in the context.
 
This principle applies to all context where complex uncertainty is to be addressed.


=== Models of the design process ===
=== Models of the design process ===
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[[File:Des-proc-2.png|center|thumb|800x800px|Table 1 Simplified process map for structural design]]
[[File:Des-proc-2.png|center|thumb|800x800px|Table 1 Simplified process map for structural design]]


The work starts at the top left of the map with the definition of requirements and moves across the stages and down the sub-processes to achieve the basic project outcomes (e.g. in the case of [[Framework for structural design learning|structural design]] the basic outcome is in the form of drawings and specifications that define what the structure will be).  Other outcomes are required that, for example, justify the choices made or show how risk was controlled.  The row order of the sub-processes may not be significant.
The work starts at the top left of the map with the definition of requirements and moves across the stages and down the sub-processes to achieve the basic project outcomes In the case of stuctural design the basic outcome is in the form of drawings and specifications that define what the structure will be.  Other outcomes are required that, for example, justify the choices made or show how risk was controlled.  The row order of the sub-processes may not be significant.


The map is a simplified diagram of a real system plan. It does not show iterations that are common, especially at the concept stage
Table 1 only indicates some of the complexity of the system plan.   It does not show iterations that are common, especially at the concept stage nor does it show interactions among the sub-processes.




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Naval architect, Stephen Payne, designer of the Queen Mary 2, said (at a talk given to the Institution of Engineers in Scotland in 2020).  "When designing a cruise liner, the regulations represent the starting point for my safety assessment. The Titanic met the then current regulations."  Hundreds of people might drown if a passenger liner was lost at sea. There are equivalent risks in structural design e.g. for a long span bridge or the roof of a sports stadium.  Use of the principle that the ''starting'' point for design should be the regulations should be adopted in all strutural designs. This requires [[critical thinking]] by all participants.
Naval architect, Stephen Payne, designer of the Queen Mary 2, said (at a talk given to the Institution of Engineers in Scotland in 2020).  "When designing a cruise liner, the regulations represent the starting point for my safety assessment. The Titanic met the then current regulations."  Hundreds of people might drown if a passenger liner was lost at sea. There are equivalent risks in structural design e.g. for a long span bridge or the roof of a sports stadium.  Use of the principle that the ''starting'' point for design should be the regulations should be adopted in all strutural designs. This requires [[critical thinking]] by all participants.


=== Project Programme===
=== Design Programme===
The work of the project is controlled by a programme where tasks are defined and allocated and timelines are established.
The work of the project is controlled by a programme where tasks are defined and allocated and timelines are established.


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*Progress in relation to meeting the [https://eit.engineers.scot/index.php?title=Top-down_strategy#Requirements requirements]
*Progress in relation to meeting the [https://eit.engineers.scot/index.php?title=Top-down_strategy#Requirements requirements]


 
=== Review and revise ===
==== Design Programme ====
A simpler form of the Plan of Work for design is shown in Table 1..
 
Table 1 Simplified process map for a structural design
 
==== Design Programme ====
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