A horizontal beam AD with cross-section of 3800 mm² is supported by a wire at C and carries a load of 25kN at a point .8m from D. The wire has a cross-section of 1200mm². The beam AD is made of two sections AB and BD which are connected with a bolt. a) If the allowable shear stress in the bolt is 90mMPa, what is the minimum diameter of the bolt? b) If the allowable bearing stress in the bolt is 152 MPa, what is the minimum diameter of the bolt at C? B 20° 1.8m .@m 1-2m²
A horizontal beam AD with cross-section of 3800 mm² is supported by a wire at C and carries a load of 25kN at a point .8m from D. The wire has a cross-section of 1200mm². The beam AD is made of two sections AB and BD which are connected with a bolt. a) If the allowable shear stress in the bolt is 90mMPa, what is the minimum diameter of the bolt? b) If the allowable bearing stress in the bolt is 152 MPa, what is the minimum diameter of the bolt at C? B 20° 1.8m .@m 1-2m²
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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For Problem 1 b) - change the question to what is the axial stress of the wire.
Please show FBD and complete solutions.
Transcribed Image Text:A horizontal beam AD with cross-section of 3800 mm² is supported by a wire at
C and carries a load of 25kN at a point .8m from D. The wire has a cross-section of
1200mm². The beam AD is made of two sections AB and BD which are connected with
a bolt.
a) If the allowable shear stress in the bolt is 90mMPa, what is the minimum diameter
of the bolt?
b) If the allowable bearing stress in the bolt is 152 MPa, what is the minimum diameter
of the bolt at C?
C
B
1.8m
O
20
.em
1-2m
Transcribed Image Text:Determine the shear in the bolt of the pin at A if the bolt diameter is 20mm.
4.
2400tbs
Detail of the hinge
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you left out the distance on Moment B = Fcd sin 20 (1.2m)
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