Steel Beam Design Results

Steel beam design results and failure conditions for steel beams are displayed in the Steel Beams dialog. The Steel Beams dialog displays PMM ratios, combinations and deflection results. In the “ Details ” tab, material and section properties, internal force values, axial compressive strength, bending moment strength in strong and weak axis, design variables and lateral stiffness coefficients (K coefficient, L factor etc.) and PMM ratio are displayed.

Location of Steel Beams Dialogue

After the analysis is done, you can access it by clicking the Beam command under the Steel Design heading in the ribbon menu Analysis and Design tab .

Steel Beams

Specifications

ID

It is the name of the steel beam in the plan.

Section

It is the section used in steel beam.

Material

It is the material used in steel beam.

PMM Ratio

It is the ratio of requirement to section capacity (PMM Ratio = Need/Capacity).

Combo

It is the load combination that produces the most unfavorable PMM ratio.

Maj-Shr-Ratio

It is the ratio of the shear force in the major direction of the section to the capacity in the major direction.

Combo

It is the load combination that produces the most unfavorable stress ratio in the major direction.

Min-Shr-Ratio

It is the ratio of the shear force in the minor direction of the section to the capacity in the minor direction.

Combo

It is the load combination that produces the most negative stress ratio in the minor direction.

Strength check

It is an information box whose sign changes according to the presence or absence of negativity in the section.

Deflection

It is the deflection value made by the steel beam.

Limit value

It is the value of the maximum allowed deflection of the element calculated according to the limit value determined from the design tab of the steel beam settings.

Deflection check

It is an information box whose sign changes depending on whether the deflection limit is exceeded or not.

Slenderness

It is the slenderness value of the steel beam.

Limit Value

It is the maximum slenderness value allowed in the steel beam.

Details

Design details are shown in detail.

Previous

The cursor moves to the previous line.

Next

The cursor goes to the next line.

OK

It saves the changes made and closes the dialog.

Cancel

Closes the dialog without saving the changes made.

Summary Information

The summary information about the line where the cursor is located is given in the name of the dialog in story, pose format.

For example BASE STORY, SB001

Using the Shift key

In this tab, you can select more than one row with the Shift key, enter a value by double-clicking any cell whose value is open to change, and make that value apply to all selected rows.

Using the Ctrl key

Ctrl key selects the lines in between one by one.

Design Details

Specifications

Schematic drawing

Section properties

It is the part where the name and geometric properties of the section take place.
A: Cross section area.
J: Torsion is the moment of inertia.
I_y: is the cross section moment of inertia on the 2 axis.
I_x: The section moment of inertia on the 3 axis.
i_y: is the radius of inertia on the 2 axis.
i_x: the radius of inertia on the 3 axis.
W_ey: Section on the 2 axis is the moment of elastic strength.
W_ex: Section on the 3 axis is the moment of elastic strength.
W_py: Section in 2 axis is the plastic strength moment.
W_px: Section in 3 axis is the plastic strength moment.

Material properties

The properties of the steel material used in the section are listed.
F_y: It is the yield strength.
E: It is the modulus of elasticity.
G: It is the shear modulus.
F_u: It is the tensile strength.

Forces and moments

Internal forces occurring in the element, belonging to the selected load combination, are shown in this section.
P_r: The axial load value.
M_rx: The bending moment of the element in 2 directions.
M_ry: The bending moment of the element in 3 directions.
V_ry: It is the cutting forces of the element in 2 directions.
V_rx: The shear forces of the element in 3 directions.
T_r: The torque of the element.

Combo

The load combination is selected.

Demand/capacity ratio

The demand/capacity ratio in the section of the selected load combination is displayed.
Ratio: It is the ratio value in percentage.
Interaction equation: It is the interaction equation used in ratio calculation.

Shear check

The shear capacity ratio of the steel beam is shown.
V_r: It is the major and minor beam shear force calculated according to the selected load combination.
V_r/Omega*V_c: The shear capacity of the steel beam in major and minor directions.
Ratio: It is the ratio value calculated based on the effect and capacity.

Axial force and biaxial bending control

The axial capacity and moment capacity ratios of the steel beam are shown.
P_r: It is the column axial load calculated according to the selected load combination.
P_c/Omega capacity: It is the axial pressure load capacity of the steel beam.
P_t/Omega capacity: It is the axial tensile load capacity of the steel beam.
M_r: It is the moment value in major and minor direction calculated according to the selected load combination.
M_c/Omega capacity: It is the moment carrying capacity of the steel beam.
T_r: It is the value of the beam twisting moment calculated according to the selected load combination.
T_c: Torsional moment of steel beam is its carrying capacity.

Design factors

K factor: It is the effective length coefficient used in calculations.
L factor: It is the supported length ratio used in the calculations.
LTB - L factor: It is the value used for lateral torsion buckling in the calculations.
C _b factor: It is the flexural coefficient used in the calculations.

Next Topic

Secondary Beam Design Results

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