Cables with Distributed Loads | IStructE Structural Behaviour Course

Dr Jawed Qureshi explains the analysis of cables under distributed loads. These types of cables are commonly used in suspension bridges, like the Golden Gate and Brooklyn Bridges. In this video, you will learn how to analyse these cables, including calculating tension forces, reaction forces, and the dip or sag in the cables.

This is part of Dr Qureshi’s lecture series on understanding structural behaviour using qualitative analysis. Qualitative analysis helps you understand structures, load paths, member forces, deflected shapes, and bending moment diagrams without relying on complex math. Take the quiz and download the lecture slides for a complete learning experience—ideal for civil engineering students and professionals or those studying for the IStructE Certificate in Structural Behaviour.

📚 Video Overview:
In this video, you'll learn:
• Background to cables with distributed loads
• How to find forces in cables with UDL
• How to find cable deflect in catenary and parabolic shape

⏰ TIMECODES ⏰
00:00 – Introduction
00:44 – What are suspended cables?
02:00 – Load path in suspension and cable-stayed bridges
04:26 – Example Cables with UDL
12:20 – Resources

🌐 More Learning Resources:

📚 Common Queries Answered:

What are the basics of cable analysis in suspension bridges?
How do distributed loads impact bridge cable tension forces?
What is the role of cables in bridge engineering?
How to calculate cable sag in suspension bridge analysis?
What methods calculate reactions in cables with distributed loads?
Why are cables essential in suspended roof structures?
How do suspension bridge cables handle heavy load distribution?
What factors influence cable tension in bridge construction?
How to determine dip and sag in suspension cables?
How are bridge cable forces calculated under varying loads?
What are cables with an external distributed load?
What is catenary cable?
Cable problems structural analysis
Parabolic cable example problems

#istructe #structuralengineering #civilengineering
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Disclaimer: This educational material is provided 'as is' with no warranty. It is intended for learning purposes only and should not be used as a substitute for professional advice. Dr Jawed Qureshi holds the copyright to this presentation. He is a Senior Lecturer in Structural Engineering at the University of East London (UEL), UK, with over 20 years of international experience. Dr Qureshi holds a PhD in steel-concrete composite structures from the University of Leeds, UK, and has worked on a major European research project at the University of Warwick, UK, prior to joining UEL.

[muhammadsajawalhayat]

Thank you very much, Sir, for sharing such high-quality material. Your teaching style is truly exceptional, and your expertise in the field is impressive. Each time I watch your lectures, I feel my understanding and knowledge growing, especially in grasping complex structures. I’m genuinely grateful and proud to be learning from your videos, Sir.

[Asher_-xb]

Very informative 👏🏾

Thank you Dr. Qureshi

[Sitche]

Thank you Dr please keep it up. This is improving my structural engineeing practice her in Ireland

[adno]

Another great presentation! Thank you very much!

[kofiobeng]

Thank you, sir. Your lectures are beneficial.

[ForensicCats]

The towers are in compression created by the load from the cables. The saddles have significant compression at all clamp forces also...
I think the closets example of a compressive system is in hydraulic fluid...
I do enjoy trying to find a pure temsion ir compressive member but I cannot...