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5. DC EC 03: longitudonal reinforcement in column under pure compression

# DC EC 03: longitudonal reinforcement in column under pure compression

## Description

Geometry Load Cross-section: Material: C35/40 Design axial force: EN 1992-1-1 [- -] and [BE]
How to model a column in Diamonds that can be compared with handcalculations
• In this example we don’t want 2nd order effects. Therefor we deselecty everything.
• According to Eurocode 2, reinforcement is required for the forces in ULS, possibly increased with additional reinforcement to limit the stresses in SLS. It is not known in advance whether additional reinforcement will be required for SLS. Since we are only doing a ULS calculation in this example, we turn off the stress limits in SLS in Diamonds (by making a copy of C25/30 and editing the copy).

## Independent reference results

Open handcalculations

#### According to EN 1992-1-1 [- -]

Deduct :

Diamonds neglects in the denominator:

Because we have pure compression the compression strain is limited to % (EN 1992-1-1 Figure 6.1). Resulting in % .

Divide reinforcement over 4 sides:

#### According to EN 1992-1-1 [BE]

Deduct :

Diamonds neglects in the denominator:

Because we have pure compression the compression strain is limited to % (EN 1992-1-1 Figure 6.1). Resulting in % .

Divide reinforcement over 4 sides:

## Diamonds results and comparison

#### According to EN 1992-1-1 [–]

Longitudonal reinforcement calculated by Diamonds (EN 1992-1-1 [- -])

Results Independent reference Diamonds Difference
Longitudonal reinforcement 151mm² 151mm² 0,00%

#### According to EN 1992-1-1 [BE]

Longitudonal reinforcement calculated by Diamonds (EN 1992-1-1 [BE])

Results Independent reference Diamonds Difference
Longitudonal reinforcement 288mm² 288mm² 0,00%

## References

• Tested in Diamonds 2024r01.