PLASTIC ANALYSIS OF SIMPLE BEAMS

Applying plastic analysis...

• Mp in span AB should be equal as Mp in span BC

• Mp in span AB should be different as Mp in span BC

• Mp at B is zero

• Mp at C is zero

To find a profile to build all the beam...

• I have to consider Mp at span AB

• I have to consider Mp at span BC

• I have to consider Mp at C

• All the answers are incorrect

To build the whole beam the cheapest profile I can choose is...

• HEB100 which Mp = 28,6 kNm

• HEB120 which Mp = 45,43 kNm

• HEB140 which Mp = 67,5 kNm

• None of the anwers is correct.

If I build this beam with a profile HEB120 which Mp is 45,43 the safety factor is

• 1,21

• 1,26

• 1,42

• None of the answers is correct

Compare the Mp of these two beams

• The Mp in span AB is smaller in 2 than in 1

• The Mp in span AB is bigger in 2 than in 1

• The Mp in span AB is equal in 2 and in 1

• I cannot know the relationship with the given values

Compare the Mp of these two beams

• The Mp in span BC is smaller in 2 than in 1

• The Mp in span BC is bigger in 2 than in 1

• The Mp in span BC is equal in 2 and in 1

• I cannot know the relationship with the given values