Machine design (flange coupling design) a simple question

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The discussion centers on flange coupling design, referencing Shigley's Mechanical Engineering Design as a key source. Participants seek clarification on safety factors related to failure costs and inquire about available design tables or codes. There is confusion regarding the specific type of flange being discussed, whether for pipe junctions or drive shaft couplings. Additionally, questions arise about relevant text sections and considerations for shock or impulse factors in the design. The conversation highlights the need for precise information and resources in mechanical design.
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Our teacher finned me 30 point for assuming a safety factor2.5for flange design, is it ok to assume a safety factor?
Our source book is shiegly if somone answer i hope he give me yhe source of his infortmation
 
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The safety factor may increase with the cost of a failure.
Are there code or design tables available, where ?

I assume 'shiegly' is;
Shigley's. Mechanical Engineering Design. 10th Edition. 2015.
By Richard G. Budynas and J. Keith Nisbett.

Do you refer to a flange for a pipe junction, a drive shaft coupling, RSJ, or something else ?
What part of the text covers the subject.
 
Is there a shock / impulse / snatch factor to consider ??
 

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