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Steel Bridge Design Quiz: Composite Steel Stringer

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Steel Bridge Design Quiz: Composite Steel Stringer

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Questions and Answers

What is the value of eg, the distance between the center of gravity of the stringer and the center of the deck?

452.25 mm

455.25 mm

448.25 mm

450.25 mm (correct)

What is the formula to calculate the moment due to lane load (Mlane) in a composite steel stringer bridge?

Mlane = wL/8

Mlane = wL2/8 (correct)

Mlane = wL/4

Mlane = wL/2

What is the value of DFMi (Distribution Factor for Moment) for a two-lane interior beam?

0.75

0.486

0.651 (correct)

0.85

What is the formula to calculate the shear due to lane load (Vlane) in a composite steel stringer bridge?

Vlane = wL/2 Signup and view all the answers

What is the value of Vmax, the maximum shear due to the design truck, in a composite steel stringer bridge?

344.4 kN Signup and view all the answers

What is the formula to calculate the total unfactored moment (Mtotal) in a composite steel stringer bridge?

Mtotal = Mtruck + Mlane Signup and view all the answers

What is the value of RA, the reaction force at one end of the bridge, in a composite steel stringer bridge?

145.6 kN Signup and view all the answers

What is the formula to calculate the maximum moment (Mmax) due to the tandem load in a composite steel stringer bridge?

Mmax = RA(7+0.6) - 110(1.2) Signup and view all the answers

What is the value of Vmax, the maximum shear due to the tandem load, in a composite steel stringer bridge?

210.57 kN Signup and view all the answers

What is the load combination applicable for calculating the factored moment and shear in a composite steel stringer bridge?

STRENGTH I Signup and view all the answers