Distinguish between factor of safety and partial safety factor
Answers
Answer:
Explanation:
The factor by which the yield stress of the material of a member is divided to arrive at the permissible stress in the material.
A partial safety factor relates to limit state design. This method of design is commonly used in modern structural engineering design.
A factor of safety relates to permissiable stress design design. A method of structural engineering design that is now superseded by limit state design.
In limit state design partial safety factors are applied to the loads (actions) and material strengths to obtain a safe design.
For example the load of a person standing on a beam would be multiplied by a partial safety factor of say 1.6. This is to account for the variation in people's weight or for any unforseen additional loads say the person is carrying something heavy.
A partial safety factor would also be applied to the strength of the beam (say 1.15 of the bending strength of the material). This factor is to take into account the variation in material between different beams.
Answer:
Distinguish between factor of safety and partial safety factor
Explanation:
- A partial safety factor relates to limit state design. This method of design is commonly used in modern structural engineering design.
- A factor of safety relates to permissiable stress design design.
- A method of structural engineering design that is now superseded by limit state design
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