Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress Formula

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Allowable Stress Multiplier is a factor used in hybrid bridge girders design. Check FAQs
R=1-(1-α)2(βψ)(3-ψ+ψα)6+βψ(3-ψ)
R - Allowable Stress Multiplier?α - Ratio of Web to Flange Yield Strength?β - Ratio of Web to Flange Area?ψ - Distance Ratio of Flange to Depth?

Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress Example

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Here is how the Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress equation looks like with Values.

Here is how the Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress equation looks like with Units.

Here is how the Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress equation looks like.

0.5Edit=1-(1-1.5Edit)2(3Edit2Edit)(3-2Edit+2Edit1.5Edit)6+3Edit2Edit(3-2Edit)
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Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress Solution

Follow our step by step solution on how to calculate Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress?

FIRST Step Consider the formula
R=1-(1-α)2(βψ)(3-ψ+ψα)6+βψ(3-ψ)
Next Step Substitute values of Variables
R=1-(1-1.5)2(32)(3-2+21.5)6+32(3-2)
Next Step Prepare to Evaluate
R=1-(1-1.5)2(32)(3-2+21.5)6+32(3-2)
LAST Step Evaluate
R=0.5

Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress Formula Elements

Variables
Allowable Stress Multiplier
Allowable Stress Multiplier is a factor used in hybrid bridge girders design.
Symbol: R
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.
Ratio of Web to Flange Yield Strength
Ratio of Web to Flange Yield Strength is a strength ratio.
Symbol: α
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Ratio of Web to Flange Area
The Ratio of Web to Flange Area of the orthotropic-plate bridge is the ratio of web area to the area of tension flange or bottom flange of the orthotropic-plate bridge.
Symbol: β
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Distance Ratio of Flange to Depth
Distance Ratio of Flange to Depth is the ratio of the distance from the outer edge of tension flange or bottom flange of the orthotropic deck to neutral axis divided by the depth of steel section.
Symbol: ψ
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.

Other formulas in Bending Stresses category

​Go Section Modulus of Transformed Composite Section given Stress in Steel for Unshored Members
Str=MLfsteel stress-(MD(unshored)Ss)
​Go Section Modulus of Transformed Composite Section given Stress in Steel for Shored Members
Str=MD(shored)+MLfsteel stress
​Go Stress in Steel for Unshored Members
fsteel stress=(MD(unshored)Ss)+(MLStr)
​Go Stress in Steel for Shored Members
fsteel stress=MD(shored)+MLStr

How to Evaluate Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress?

Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress evaluator uses Allowable Stress Multiplier = 1-((1-Ratio of Web to Flange Yield Strength)^2*(Ratio of Web to Flange Area*Distance Ratio of Flange to Depth)*(3-Distance Ratio of Flange to Depth+Distance Ratio of Flange to Depth*Ratio of Web to Flange Yield Strength))/(6+Ratio of Web to Flange Area*Distance Ratio of Flange to Depth*(3-Distance Ratio of Flange to Depth)) to evaluate the Allowable Stress Multiplier, The Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress is defined as a factor used for allowable stress. Allowable Stress Multiplier is denoted by R symbol.

How to evaluate Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress using this online evaluator? To use this online evaluator for Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress, enter Ratio of Web to Flange Yield Strength (α), Ratio of Web to Flange Area (β) & Distance Ratio of Flange to Depth (ψ) and hit the calculate button.

FAQs on Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress

What is the formula to find Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress?
The formula of Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress is expressed as Allowable Stress Multiplier = 1-((1-Ratio of Web to Flange Yield Strength)^2*(Ratio of Web to Flange Area*Distance Ratio of Flange to Depth)*(3-Distance Ratio of Flange to Depth+Distance Ratio of Flange to Depth*Ratio of Web to Flange Yield Strength))/(6+Ratio of Web to Flange Area*Distance Ratio of Flange to Depth*(3-Distance Ratio of Flange to Depth)). Here is an example- 0.5 = 1-((1-1.5)^2*(3*2)*(3-2+2*1.5))/(6+3*2*(3-2)).
How to calculate Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress?
With Ratio of Web to Flange Yield Strength (α), Ratio of Web to Flange Area (β) & Distance Ratio of Flange to Depth (ψ) we can find Multiplier for Allowable Stress when Flange Bending Stress is lesser than Allowable Stress using the formula - Allowable Stress Multiplier = 1-((1-Ratio of Web to Flange Yield Strength)^2*(Ratio of Web to Flange Area*Distance Ratio of Flange to Depth)*(3-Distance Ratio of Flange to Depth+Distance Ratio of Flange to Depth*Ratio of Web to Flange Yield Strength))/(6+Ratio of Web to Flange Area*Distance Ratio of Flange to Depth*(3-Distance Ratio of Flange to Depth)).
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