Select the lightest pair of C9 channels to support the loads PD = 50 k and PL = 90 k. The member is to be 20 ft long with both ends pinned and is to be arranged as shown in the accompanying illustration. Use A36 steel and design single lacing and end tie plates, assuming that 3/4-in diameter bolts are to be used for connections. Assume that the bolts are located 1 1/4 in from the back of channels. Solve by LRFD and ASD procedures. I 6 in
Select the lightest pair of C9 channels to support the loads PD = 50 k and PL = 90 k. The member is to be 20 ft long with both ends pinned and is to be arranged as shown in the accompanying illustration. Use A36 steel and design single lacing and end tie plates, assuming that 3/4-in diameter bolts are to be used for connections. Assume that the bolts are located 1 1/4 in from the back of channels. Solve by LRFD and ASD procedures. I 6 in
Steel Design (Activate Learning with these NEW titles from Engineering!)
6th Edition
ISBN:9781337094740
Author:Segui, William T.
Publisher:Segui, William T.
Chapter3: Tension Members
Section: Chapter Questions
Problem 3.6.2P
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![Select the lightest pair of C9 channels to support the loads PD
= 50 k and PL = 90 k. The member is to be 20 ft long with both
ends pinned and is to be arranged as shown in the
accompanying illustration. Use A36 steel and design single
lacing and end tie plates, assuming that 3/4-in diameter bolts
are to be used for connections. Assume that the bolts are
located 1 1/4 in from the back of channels. Solve by LRFD and
ASD procedures.
I
6 in](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0fc137e6-6929-4309-9c7d-e8a4a64a38b4%2F35baa493-abf8-46f6-b187-94ef42597933%2F8za4902_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Select the lightest pair of C9 channels to support the loads PD
= 50 k and PL = 90 k. The member is to be 20 ft long with both
ends pinned and is to be arranged as shown in the
accompanying illustration. Use A36 steel and design single
lacing and end tie plates, assuming that 3/4-in diameter bolts
are to be used for connections. Assume that the bolts are
located 1 1/4 in from the back of channels. Solve by LRFD and
ASD procedures.
I
6 in
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Step 1: Given data:-
VIEWStep 2: Calculate the required area using the below formula;
VIEWSolution
VIEWStep 3: We try & section;
VIEWStep 4: find the minimum permissible using the formula
VIEWStep 5: the available strength for the column for LRFD design control method;
VIEWStep 6: available strength for the column for ASD design control method;
VIEWStep 7: Design of end tie plates;
VIEWStep 8: Design of single lacing ( LRFD );
VIEWStep 9: Calculate the member length;
VIEWStep 10: The required width using the area;
VIEWStep by step
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