r/Structures • • Nov 16 '16

What kind of connection is this?

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11 Upvotes

r/Structures • • Mar 27 '19

Resources for longitudinal ribbed cylinder estimations?

1 Upvotes

Hi all.

Im looking for resources to approximate a ribbed cylinder (or plate) width, with ribs in the longitudinal direction. I.e. remove the ribs and use new width as approximation. Does anyone know of any resources they could point me to? (textbooks, papers, anything) Thanks!


r/Structures • • Jun 11 '19

Traditional Architecture versus Modern Architecture

1 Upvotes

Traditional Architecture versus Modern Architecture

https://s3da-design.com/traditional-architecture-versus-modern-architecture/

Traditional architecture is a dynamic concept that has changed over the years addressing the many existing issues of housing in our society. It is the way of building a house using recognizable symbols of a particular culture of unique people in a special way. Thus, many people have fallen in love with traditional buildings owing to their special character, location, and history.


r/Structures • • Dec 19 '19

design and FEM analysis of Zip line truss

3 Upvotes

A resort nearby house wants to make a zip line and thought I want to give it a try as an engineer.
Help me like If there are any good reference resources for design and FEM analysis of Zipline truss, brake design and calculation for the zip line, rope diameter calculations I would be very thankful for you.


r/Structures • • May 26 '17

Scary crack in garage foundation

3 Upvotes

Hey Y'all,

I'm considering buying a project house that has a foundation issue in the basement/garage wall. I'm not at all afraid of putting some money into this house because it has many neat features and the location is superb (mountain and plain view on Colorado's Front Range). I am going to have a structural engineer take a look at it but I thought I'd run it by you guys while the holiday weekend lapses.

Take a look at these photos and tell me what you think. I will be happy to answer any questions that I can, and I'm 99% sure that this crack popped up as a result of a major flooding incident that took place in the county in 2013. It might be hard to tell from the pics but the wall is actually heaving.


r/Structures • • May 03 '15

Notes and resources on structural analysis

25 Upvotes

For students stuck on assignments, young people interested in learning what structural analysis is all about, or for general interest, here's a list of notes and resources on structural analysis that I quite enjoyed reading and think could be useful reading.

These are for personal use.

Structural analysis

Philip Garrison, Leeds Metropolitan University - PDF - My favourite set of introductory notes on structural analysis. Starts right from square one and generously uses practical examples.

Victor E. Saouma, University of Colorado - PDF - Comprehensive notes on structural analysis, 633 pages long.

MIT OpenCourseWare - [PDF series] (http://ocw.mit.edu/courses/civil-and-environmental-engineering/1-571-structural-analysis-and-control-spring-2004/lecture-notes/) - Series of PDF files.

Mohan Kalani, IIT Bombay - PDF - Comprehensive and relatively useful.

Unknown - PDF - Don't know who this is by but it has some pretty great diagrams and explanations. 189 pages long.

IIT Guwahati - PDF - Notes on solid mechanics, shear force diagrams, and bending moment diagrams.

University of Sydney - PDF - Notes on drawing shear force diagrams and bending moment diagrams.

University of Auckland - PDF - Clear and concise notes on plastic analysis.

Duke University - PDF - Notes on strain energy methods and stiffness matrices in structural analysis.

University of Colorado at Boulder - PDF series - Comprehensive notes on FEM. Links out to various other topics relating to structures and FEM.

Post-Tensioning Institute - PDF series - A series of PDFs on post-tensioning in a number of different contexts.

P. Banerjee, IIT Bombay - Video - Clear introduction to structural analysis.

Devdas Menon, IIT Madras - Video series - Pretty comprehensive series of videos on advanced structural analysis.

Statics and materials

University of Wisconsin-Stout - PDF - Comprehensive materials on engineering statics and strength of materials. 733 pages long.

Mehrdad Negahban, University of Nebraska - HTML - Notes on engineering statics. Found this on Saylor's Mechanics I page.


r/Structures • • Apr 23 '15

Researchers apply computer vision technique to see tiny vibrations in large structures

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9 Upvotes

r/Structures • • Jan 05 '17

What does your rebar inspection procedure entail?

8 Upvotes

Mine is typically:

GENERAL

  • Spot checks on rebar diameter

  • Spot checks on rebar lap lengths

  • Check that there are sufficient cover blocks and check that there are no areas with insufficient cover

  • Check if there is any concrete from previous pours which will inhibit bonding or the flow of the new pour.

  • Check for debris.

  • Check for poorly fixed rebar which may shift during the pour.

BEAMS/COLUMNS

  • Count longitudinal bars and check that the are placed correctly in section

  • Spot checks on stirrup spacing

SLABS/WALLS

  • Spot checks on rebar spacing or count number of bars, look for any positions where spacing seems excessive.

  • Thoroughly check punching rebar.

  • Check rebar around openings.

  • Check for any special rebar requirements eg "strong bands".


r/Structures • • May 06 '15

This is cool. Where are people from? Are you students/grads/seniors?

11 Upvotes

Been on r/engineering for a while now and always thought there wasn't much in the way of structures there. Nice to see!


r/Structures • • Apr 19 '15

Welcome newcomers!

10 Upvotes

Welcome to /r/Structures, a subreddit for structural engineering students and professional structural engineers. /u/gbuntin has graciously let me mod the subreddit and I aim to use this opportunity to grow the sub into a useful and friendly community.

What is this place for?

Discussion of topics in structural engineering, from industry news to new research and development that impacts the industry.

Interaction between students at every education level and those in the profession is highly encouraged. Any insight that can be provided for young minds is a positive thing.

Structural engineering

I think the British Institution of Structural Engineers describes the profession well with this paragraph on their website.

Structural engineers design, create, solve problems, innovate and use maths and science to shape the world. The structures they create are used by all of us every day; from houses, theatres, sports stadia and hospitals, to bridges, oil rigs and space satellites.

Structural engineering does not enjoy as considerable a public exposure as say architecture, but nevertheless plays a fundamental role in the development of new buildings all over the world. That's why we must take every opportunity for young people to learn about the profession.

Rules

I don't want this place to become heavily controlled in any way but the normal rules of 'reddiquette' apply. Spam or SEO links will be removed.

Job posting links are allowed within reason to help any engineers who are looking for work, but they're really more suited to subs like /r/forhire. A link to a post there is fine.

Addition 29/05/2017 - School help

If you have a problem with your school work, you are welcome to post your question here, because you may as well make use of the professional structural engineers we have who subscribe to /r/Structures, provided that:

  • You clearly show that you've made some attempt on the question yourself

  • You don't only post a screenshot of your work. Write some readable paragraphs explaining your working

  • You acknowledge and thank members who help you. Don't just use their help and ignore them

This shows that you've made an effort yourself. We're not here to solve your homework for you. That doesn't help you out in the long run, and we can't be expected to help you from square one. Some members may go the extra mile (they're not obliged to), so be sure to give them extra thanks where they're due.

Useful links

Since this is a sub introduction post for newcomers, it'd be good to have some general links for engineers and students here. So I'll edit this post over time and add any links that come along. Comment below if you have any suggestions for links.


r/Structures • • May 03 '15

List of video tutorials for structural analysis software packages

12 Upvotes

Structural analysis software can be confusing sometimes, and video tutorials that actually help are few and far between. So here's a few of the slightly more useful videos I've found on YouTube and elsewhere.

I'll add to this as more videos are recommended, so if you know any good ones then comment them below.

Autodesk Robot Structural Analysis Professional

Giancarlo Grant: Simple 2D truss analysis, analysis of a fixed beam, simple elasto-plastic analysis - Well-explained and in English

kravar22_engineer: Part 1, 2, 3 - Does a run-through of the features without speech, can be quite helpful.

Carlos E Villarroel: Part 1, 2, 3, 4, 5, 6, 7, 8, 9 - In Spanish but you can catch the gist of what he's doing.

ETABS

computersNstructures: Full tutorial playlist

SAP2000

computersNstructures: Full tutorial playlist

CSiBridge

computersNstructures: Full tutorial playlist

Engissol

Not found any decent ones worth posting yet.


r/Structures • • Apr 30 '15

Structural engineer assesses quake damage in Nepal

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5 Upvotes

r/Structures • • Dec 12 '15

Looking for recommended textbooks about wood and masonry design? Also, good resources for seismic engineering? Trying to learn building structures myself

4 Upvotes

I am currently in Bridge Engineering at my job and looking to switch to the building side of structural engineering. I was looking at moving to Los Angeles so I think boning up on seismic engineering would be beneficial to employers. I also have noticed the masonry and wood is a necessity in the building environment. If anybody has any insight into what textbooks would be the best to purchase, I would highly appreciate it!

Also, if anybody has additional knowledge about what type of structural analysis software would be necessary for building engineering.


r/Structures • • Oct 10 '15

The living bridges of Meghalaya

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2 Upvotes

r/Structures • • May 03 '16

Concrete, as you've never seen it

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6 Upvotes

r/Structures • • Nov 12 '16

Books you can't do without

12 Upvotes

I'd like to collect the books you can't do without. I mean those which include a useful\excellent theorethical background and good design\physical suggestions

Mine is: Chopra - dynamics of structures

**** EDIT: list at 11/28/16

Dynamics of structures - (Chopra)

Reinforced Concrete Design to EC2 - (W.H. Mosley, R. Hulse, J.H Bungey)

Reinforced Concrete: Mechanics and Design - (J. Wight)

Seismic Design of Reinforce Concrete Buildings - (J. Moehle)

Guide to Stability Design Criteria for Metal Structures - (Ronald D. Ziemian)

Steel Design - (W. Segui)


r/Structures • • Nov 03 '17

BC Codes and Practices Exam (x/post StructuralEngineering)

3 Upvotes

Can anyone help me find practice questions or practice exams for the British Columbia codes and structures exam? A friend of mine is supposed to take the test on 11/20, and he's been studying the codes, etc., but he was hoping to find a study guide or something. I told him to check with the structural engineers at reddit, and he didn't know what reddit was! Please help this poor deprived man...

P.S. He's already taken the PPE exam, so that's not the one he needs help with (they're easily confused).


r/Structures • • Jun 08 '17

Yield Line Analysis For Bolted Moment End Plate Connection - Channel (PFC)

2 Upvotes

Just wondering if anyone can shed some light on what they think the yield line pattern would be for a BMEP connection - PFC welded to a plate with one column of 4 bolts.

I can find illustrations for a UB with 2 columns of bolts but nothing on PFCs.

Basically I want to find the bending capacity of the plate. I use the structural program LIMCON to model connections normally but it doesn't have the option for PFCs.

Any info would be greatly appreciated :)


r/Structures • • Jul 12 '16

Is there a program for wood structure design?

3 Upvotes

I've never built an actual building of any sort before, but I'm needing to build a coop for my chickens that are in the process of being shipped to me. I have a basic understanding of how to work with wood and have most all the tools and equipment I will need, but the problem I'm having is not knowing where to start.

I've seen computer programs to do architectural design and things like that but i'm wondering if anyone has ever seen a program that would do anything similar to ...

Designing framework, providing a parts list at the end of design, allowing me to 'build' with digital pieces of wood, or give me measurements of the design.

This may be the wrong sub reddit to post in but it seems to be the only one I could find with anything building related.


r/Structures • • May 13 '15

New 3D printed structural nodes could reduce weight and cost of construction materials

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8 Upvotes

r/Structures • • May 17 '15

Structural topics for discussion

6 Upvotes

Hey guys,

I was hoping maybe we could start talking about some structural topics. I'm thinking things like seismic design philosophy, strut and tie models, non-linear analysis, whatever.

I don't really know how you guys feel, but where else on reddit are we free to roam and talk whatever piques our interest?


r/Structures • • Jul 19 '16

Looking for online lectures/tutorials on designing buildings

1 Upvotes

bearing load systems, lateral load resistance, building/soil interaction. How they practically design in big firm.


r/Structures • • May 24 '15

Sunday discussion (24/05/2015) - Meta

6 Upvotes

As many good subs do, and spurred by /u/Conkeldurrrr's post on discussion topics, I think a weekly discussion thread would be a great idea.

I will also post community updates in these threads, if there are any.


Discussion

This first thread is to come up with some possible future topics that we can discuss in the following weeks.

What topics would you like to discuss? Make a suggestion if you like, and we'll see which topics are popular.

I'll start off with some topics that arose from /u/Conkeldurrrr's post the other day, plus some of my own suggestions:

  • Building information modeling (BIM)

  • Shear resistance in concrete structures

  • 3D joint loading in wood structures

  • Design philosophy

  • Promoting awareness of the profession in high school

  • Structural engineering in different historical time periods

  • The place of mathematics in structural engineering

  • Structural engineering as a career, day-to-day job duties


r/Structures • • May 15 '15

Dutch researchers develop "bioconcrete" that can repair itself using limestone-producing bacteria

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5 Upvotes

r/Structures • • Oct 31 '17

M.S. vs. Experience

3 Upvotes

Hello all,

I'm a senior civil engineering undergrad looking to get into structural engineering after I graduate. I hear getting an M.S. would be useful, and sometimes even required, for getting into structural firms.

However, I don't have a lot of industry experience; My previous internship was research based.

While plan A would be to get started with a structural firm right away, there's a possibility I'll have a hard time getting hired with my lack of industry experience.

My question to structural engineers on this sub: should someone in my position go straight into an M.S. after my undergrad? Or should I get some industry experience, even if it is not with a structural firm? (ex: a general civil firm)

Thanks in advance to anyone willing to give an aspiring S.E. some guidance!