Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges Calculator

✖Flange Area is space occupied by flange.ⓘ Flange Area [A_f]			+10% -10%
✖Yield strength of steel is the level of stress that corresponds to the yield point.ⓘ Yield Strength of Steel [f_y]			+10% -10%
✖Depth of Section is the depth of any section whether it can be a steel beam section or a steel column section.ⓘ Depth of Section [d]			+10% -10%

✖Maximum Unbraced Length is the maximum distance along the member between brace points or points at which the member is braced against deflection in the given direction.ⓘ Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges [L_b]

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Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges

Formula

`"L"_{"b"} = (20000*"A"_{"f"})/("f"_{"y"}*"d")`

Example

`"1000mm"=(20000*"4375mm²")/("250MPa"*"350mm")`

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Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges Solution

STEP 0: Pre-Calculation Summary

Formula Used

Maximum Unbraced Length = (20000*Flange Area)/(Yield Strength of Steel*Depth of Section)
L_b = (20000*A_f)/(f_y*d)
This formula uses 4 Variables

Variables Used

Maximum Unbraced Length - (Measured in Millimeter) - Maximum Unbraced Length is the maximum distance along the member between brace points or points at which the member is braced against deflection in the given direction.
Flange Area - (Measured in Square Millimeter) - Flange Area is space occupied by flange.
Yield Strength of Steel - (Measured in Megapascal) - Yield strength of steel is the level of stress that corresponds to the yield point.
Depth of Section - (Measured in Millimeter) - Depth of Section is the depth of any section whether it can be a steel beam section or a steel column section.

STEP 1: Convert Input(s) to Base Unit

Flange Area: 4375 Square Millimeter --> 4375 Square Millimeter No Conversion Required
Yield Strength of Steel: 250 Megapascal --> 250 Megapascal No Conversion Required
Depth of Section: 350 Millimeter --> 350 Millimeter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

L_b = (20000*A_f)/(f_y*d) --> (20000*4375)/(250*350)

Evaluating ... ...

L_b = 1000

STEP 3: Convert Result to Output's Unit

1 Meter -->1000 Millimeter (Check conversion here)

FINAL ANSWER

1000 Millimeter <-- Maximum Unbraced Length

(Calculation completed in 00.004 seconds)

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National Institute of Technology Karnataka (NITK), Surathkal

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< 14 Load-Factor Design for Bridge Beams Calculators

Maximum Unbraced Length for Symmetrical Flexural Compact Section for LFD of Bridges

Go Max Unbraced Length for Flexural Compact Section = ((3600-2200*(Smaller Moment/Maximum Bending Strength))*Radius of Gyration)/Yield Strength of Steel

Minimum Flange Thickness for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges

Go Flange Minimum Thickness = (Width of Projection of Flange*sqrt(Yield Strength of Steel))/69.6

Width of Projection of Flange for Compact Section for LFD given Minimum Flange Thickness

Go Width of Projection of Flange = (65*Flange Minimum Thickness)/(sqrt(Yield Strength of Steel))

Minimum Flange Thickness for Symmetrical Flexural Compact Section for LFD of Bridges

Go Flange Minimum Thickness = (Width of Projection of Flange*sqrt(Yield Strength of Steel))/65

Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges

Go Maximum Unbraced Length = (20000*Flange Area)/(Yield Strength of Steel*Depth of Section)

Depth of Section for Braced Non-Compact Section for LFD given Maximum Unbraced Length

Go Depth of Section = (20000*Flange Area)/(Yield Strength of Steel*Maximum Unbraced Length)

Area of Flange for Braced Non-Compact Section for LFD

Go Flange Area = (Maximum Unbraced Length*Yield Strength of Steel*Depth of Section)/20000

Minimum Web Thickness for Symmetrical Flexural Compact Section for LFD of Bridges

Go Web Minimum Thickness = Depth of Section*sqrt(Yield Strength of Steel)/608

Maximum Bending Strength for Symmetrical Flexural Compact Section for LFD of Bridges

Go Maximum Bending Strength = Yield Strength of Steel*Plastic Section Modulus

Maximum Bending Strength for Symmetrical Flexural Braced Non-Compacted Section for LFD of Bridges

Go Maximum Bending Strength = Yield Strength of Steel*Section Modulus

Allowable Bearing Stresses on Pins not Subject to Rotation for Bridges for LFD

Go Allowable Bearing Stresses on Pins = 0.80*Yield Strength of Steel

Allowable Bearing Stresses on Pins Subject to Rotation for Bridges for LFD

Go Allowable Bearing Stresses on Pins = 0.40*Yield Strength of Steel

Minimum Web Thickness for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges

Go Web Minimum Thickness = Unsupported Distance between Flanges/150

Allowable Bearing Stresses on Pins for Buildings for LFD

Go Allowable Bearing Stresses on Pins = 0.9*Yield Strength of Steel

Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges Formula

Maximum Unbraced Length = (20000*Flange Area)/(Yield Strength of Steel*Depth of Section)
L_b = (20000*A_f)/(f_y*d)

What is Unbraced Length?

Unbraced Length is defined as the distance between ends of a structural member (such as a column) which are prevented from moving normal to the axis of the member, by bracing, by floor slabs, etc.

How to Calculate Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges?

Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges calculator uses Maximum Unbraced Length = (20000*Flange Area)/(Yield Strength of Steel*Depth of Section) to calculate the Maximum Unbraced Length, The Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges formula is defined as is the clear distance between the supports of the flexural bridge section. Maximum Unbraced Length is denoted by L_b symbol.

How to calculate Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges using this online calculator? To use this online calculator for Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges, enter Flange Area (A_f), Yield Strength of Steel (f_y) & Depth of Section (d) and hit the calculate button. Here is how the Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges calculation can be explained with given input values -> 1E+6 = (20000*0.004375)/(250000000*0.35).

FAQ

What is Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges?

The Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges formula is defined as is the clear distance between the supports of the flexural bridge section and is represented as L_b = (20000*A_f)/(f_y*d) or Maximum Unbraced Length = (20000*Flange Area)/(Yield Strength of Steel*Depth of Section). Flange Area is space occupied by flange, Yield strength of steel is the level of stress that corresponds to the yield point & Depth of Section is the depth of any section whether it can be a steel beam section or a steel column section.

How to calculate Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges?

The Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges formula is defined as is the clear distance between the supports of the flexural bridge section is calculated using Maximum Unbraced Length = (20000*Flange Area)/(Yield Strength of Steel*Depth of Section). To calculate Maximum Unbraced Length for Symmetrical Flexural Braced Non-Compact Section for LFD of Bridges, you need Flange Area (A_f), Yield Strength of Steel (f_y) & Depth of Section (d). With our tool, you need to enter the respective value for Flange Area, Yield Strength of Steel & Depth of Section and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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