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Calculations
Effective section modulus
This functionality is in
beta stage
.
Effective section modulus
public
Effective section modulus for compact sections as per AS 4100:2020 Section 5.2.3
IF
$ S_{x_{AS4100}} $ < $ 1.1 * Z_{x_{AS4100}} $
THEN
$$ Z_{e_{AS4100}} = {S_{x_{AS4100}}} \; \; , {mm ^ 3} $$
OTHERWISE
$$ Z_{e_{AS4100}} = {Z_{x_{AS4100}}} \; \; , {mm ^ 3} $$
Preceding calculations
2
Plastic section moduli
public
Plastic section moduli
$$ S_{x_{AS4100}} = 533000 \: mm^3 $$
Elastic section moduli
public
Elastic section moduli
$$ Z_{x_{AS4100}} = 430000 \: mm^3 $$
Dependant calculations
4
Design bending moment in RHS
public
Design bending moment in RHS about the major principal axis analyzed by the elastic method as per AS4100:2020 Section 4.4.2.2
$$ M_{x_{AS4100}} = {\phi_{ls_{AS4100}} \cdot M_{b_{AS4100}}} \:, Nm $$
Nominal member moment capacity
public
The nominal member moment capacity as per AS4100:2020 Section 5.6.1.1(1)
Nominal member moment capacity
$$ M_{b_{AS4100}} = {\alpha_{m_{AS4100}} \cdot \alpha_{s_{AS4100}} \cdot M_{s_{AS4100}}} \:, Nm $$
Slenderness reduction factor
public
Slenderness reduction factor as per AS 4100:2020 Section 5.6.1.1
Slenderness reduction factor
$$ \alpha_{s_{AS4100}} = {0.6 \cdot \left({ \sqrt{ \left({ {M_{s_{AS4100}} \over M_{o_{AS4100}}} }\right) ^ 2 + 3 } - \left({ {M_{s_{AS4100}} \over M_{o_{AS4100}}} }\right) }\right)} $$
Section moment capacity
public
Section moment capacity for bending about a principal axis as per AS 4100:2020 Section 5.2.1
Section moment capacity
$$ M_{s_{AS4100}} = {f_y \cdot {Z_{e_{AS4100}} \over 10 ^ 3}} \:, Nm $$
Calculation