A channel is used as a tension member with the web of the channel welded to a 9.5 mm thick gusset plate as shown in the figure. The tension member is subjected to the following axial loads. Use LRFD   Service dead load = 200 kN Wind load = 276 kN Service live load = 260 kN   For channel: Fy = 345 MPa   For gusset plate: Fy = 248 MPa Fu = 400 MPa   Size of E 70 electrodes = 4 mm Ultimate tensile strength of E 70 electrodes = 480; Fw = 0.6(480)   Questions : a) Determine the design factored tensile force. b) Determine the length of longitudinal welds "L".

Steel Design (Activate Learning with these NEW titles from Engineering!)
6th Edition
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Chapter8: Eccentric Connections
Section: Chapter Questions
Problem 8.4.3P: Use an elastic analysis and determine the maximum load per inch of weld.
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Topic:Welded Connection - Civil Engineering -Steel Design

 

*Use latest NSCP/NSCP 2015 formula to solve this problem

*Use attached formula picture for block shear 

*Please use hand written to solve this problem

 

 

A channel is used as a tension member with the web of the channel welded to a 9.5 mm thick gusset plate as shown in the figure. The tension member is subjected to the following axial loads. Use LRFD

 

Service dead load = 200 kN

Wind load = 276 kN

Service live load = 260 kN

 

For channel:

Fy = 345 MPa

 

For gusset plate:

Fy = 248 MPa Fu = 400 MPa

 

Size of E 70 electrodes = 4 mm

Ultimate tensile strength of E 70 electrodes = 480;

Fw = 0.6(480)

 

Questions :

a) Determine the design factored tensile force.

b) Determine the length of longitudinal welds "L".

c) Determine the block shear strength of the gusset plate.

 

R₁ = 0.6FuAnv + Ubs FuAnt ≤0.6FyAgv + Ubs FuAnt
KINDLY USE THIS FORMULA FOR BLOCK SHEAR
= 0.75(LRFD)
= 2.00(ASD)
where
Agv
Ant
Anv
gross area subject to shear, mm²
net area subject to tension, mm²
net area subject to shear, mm²
Where the tension stress is uniform, Ubs = 1; where the
tension stress is nonuniform, Ubs = 0.5.
Transcribed Image Text:R₁ = 0.6FuAnv + Ubs FuAnt ≤0.6FyAgv + Ubs FuAnt KINDLY USE THIS FORMULA FOR BLOCK SHEAR = 0.75(LRFD) = 2.00(ASD) where Agv Ant Anv gross area subject to shear, mm² net area subject to tension, mm² net area subject to shear, mm² Where the tension stress is uniform, Ubs = 1; where the tension stress is nonuniform, Ubs = 0.5.
250 mm
Gusset plate = 9.5 mm thick
L
4 mm fillet weld
T
Transcribed Image Text:250 mm Gusset plate = 9.5 mm thick L 4 mm fillet weld T
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