The Golden Rules of Steel Portal Frame Design for Structural Engineers

[@mohammedabuzour]

Keep your brilliant efforts up

[@omaral-azzawi]

Gabriel, your knowledge and expertise are truly invaluable, and I want you to know how much I appreciate you sharing them, and I am very grateful. Thank you so much for all your efforts.

[@bengthebrazilianengineerinAus]

Thanks my friend. It makes me really happy to hear those things. I appreciate your words.

[@KM-yl9lc]

Another amazingly informative video. Many thanks!!

[@Kacophoniks]

Succinct and informative as always. I bought your retaining wall guide, and I'll likely buy any other structural publication you put together.

[@bengthebrazilianengineerinAus]

Thanks very much. I appreciate your support. That's what keeps me going.

[@Sitche]

Thank you. May you also do a video on portal trusses with parallel chords

[@bengthebrazilianengineerinAus]

I will put on the list :)

[@DeepakKrishna11]

Thank you for detailed video.

[@bengthebrazilianengineerinAus]

No worries ☺

[@MoonbeamBase]

Thank you, I learned a few good practical tips in this video.

[@bengthebrazilianengineerinAus]

That's fantastic. Thanks for the feedback

[@AbuBakkorSiddik-p3c]

Thank you .Highly appreciate your knowledge sharing effort.

[@TrustyGroup-qz8od]

You are the best brother

[@bengthebrazilianengineerinAus]

YOU are the best man

[@sothattheng8624]

Thanks for your sharing!

[@bengthebrazilianengineerinAus]

Thanks for watching :)

[@jmlali404]

Thanks for your videos 😊

[@bengthebrazilianengineerinAus]

No worries man. Thanks for your comment :)

[@FliesEyes]

Great explanation, mate.

[@bengthebrazilianengineerinAus]

Thanks Murray :)

[@gabrielbobmarley]

Great Vid gabe

[@bengthebrazilianengineerinAus]

Thanks ☺

[@gabrielribeiro597]

Great vid gabby

[@bengthebrazilianengineerinAus]

Thanks Gabe

[@RaymondBond-kn9kr]

Hi Gabriel, I have worked for structural and civil engineers for nearly 50 years. I have recently retired after many years of being in the building industry. Do you use welded beam and welded column sections in any portal frame that you have to design? How do you compensate for racking in the frame structure? A great structural engineer who is now deceased said to me many years ago to include ridge ties and column top ties between frames. Most other engineers just rely on purlins and girts to provide a form of bracing between frames. I always used CHS as tie members because they are good in tension and compression. I also use CHS as bracing sections in the end bays with a forked end plate connection. I included additional stiffeners at the column/rafter connection to make the column/rafter connection a lot stiffer. Do you have a preferred purlin and girt size? I usually use a C or Z 200 or 250 purlin section with 2 or 3 rows of bridging depending on the design parameters.

[@bengthebrazilianengineerinAus]

Hi Raymond, welded beams and columns are typically very heavy and expensive. I try to stick with UB's and UC's. Yes, I do exactly what you described, using struts and ties. I wouldn't rely on purlins and girts for large structures. Maybe for carport sheds. I also spec the stiffeners in the portal connections. The purlin and girts size are dependent on the span, wind loads etc.

[@MrPodushka]

Which program for analysis are you using by the way?

[@cheechoonghoo2735]

Thank you!

[@bengthebrazilianengineerinAus]

Thank you :)

[@jwongh]

Hi Gabriel, what software did you use in this video. Thanks, useful video

[@bengthebrazilianengineerinAus]

It was spacegass. Very popular in Australia. Which one do you use?

[@anastaha2438]

Hi Dear, if there is steel frame, the top cord is rafter IPE and the bottom cord is RHS, shall we move the bottom cord - RHS- to lower level ? because in reality the IPE - top cord- is connected say by end plate with the column! and thus shall this be reflected on sap?? or shall we keep them as it is in sap - all are center to center- without shifting the bottom cord to down by move command

[@martindekker8203]

Great info mate. how would you go about designing a Barndominium that's 18M x 20M with seamless colorbond sheeting on roof and sides. Half of the building will need to be habitable and the other half will be a workshop/garage. I'm located according to your graph in A1 area South West australia.

[@bengthebrazilianengineerinAus]

Hi Martin, thanks for watching :) I would need more information to be able to guide you on this. I would engage a local structural engineer to help you out. You will need council approval for a habitable building anyway.

[@jonhauirae1722]

You are the best

[@bengthebrazilianengineerinAus]

YOU are the best :)

[@rdg5329]

Salve Gabriel, vc eh foda! Estou fazendo meu primeiro portal frame aqui na Australia!! Complicado.... haha

[@bengthebrazilianengineerinAus]

Fala brother. Bom demais. Ta trampando onde?

[@rdg5329]

@@bengthebrazilianengineerinAus Trabalhando em NSW aqui perto de Byron ja faz 1 ano e meio, aprendendo muito ainda todos os dias. quantos anos vc tem de experiencia?

[@joseraimundo3387]

Fala Bro, como conseguir trabalho ai como engenheiro civil?

[@rdg5329]

@@joseraimundo3387 formei aqui

[@gnidnoeled786]

What's the reason behind the design that bolted connections of a column of a portal frame is located at 1/3H of column from top and bottom? Bolted connections of column is at two points of the column.

[@bengthebrazilianengineerinAus]

are you talking about the crane runaway beam connections? Gantry cranes

[@gnidnoeled786]

@@bengthebrazilianengineerinAus Thanks for the reply. This is about portal frames where the bottom part of the column is installed, while the upper part of the column with the rafter is jacked up to the required elevation. Then the middle segment of the column is to be spliced with bolted connections at the top and bottom ends of that segment. I assume the middle column segment is 1/3 column clear height of the structural steel column. What's the reason behind it, why is it the bolted connection is located at that two points?

[@telestruct]

Hello, thanks for the valuable information presented in this video. 5:20 Is the haunch length (4m) the total left and right haunches or is each one 4m?

[@bengthebrazilianengineerinAus]

each one

[@nipuna3052]

Hi, I tried to get that webinar of space gass, could you please share a link to buy?

[@bengthebrazilianengineerinAus]

payhip.com/b/IETPw

[@bengthebrazilianengineerinAus]

If you have any problems with download, send me an email and I will send you a link

[@andikamentaruk1504]

can we just model the building as 2d frame, or is there any difference if we model it as 3d?

[@bengthebrazilianengineerinAus]

yes you can analyze the portal frame with a 2D model. I find the 3D models good for bracing analysis, relative sway of portals etc. It considers all the stiffness. But yeah, 2D works as well.

[@a.a.badmus1457]

Whats software is this sir?

[@bengthebrazilianengineerinAus]

Spacegass

[@TrustyGroup-qz8od]

Can I have a favor from You, Can you please share the whole videos series which can help a steel structure engineer beginner as I am. I want to pursue a steel structure designing career specifically using Robot structural analysis professional. Please how can I get your assistance

[@bengthebrazilianengineerinAus]

what type of series?

[@user-lg7gx5ub4x]

I agree, I think some robot tutorials on how you input and explain the reactions against general topics such as this video would be really helpful. Typically you only see either videos on how to use the software or videos on general topics. Might be someone unique to try and combine them . Food for thought, but I would watch.

[@kaviteshdeo2735]

​@bengthebrazilianengineerinAus hy Your videos are really helpful for graduate engineers..it would be really helpful if you could design a portal frame from start to end..wind design to foundation design

[@bengthebrazilianengineerinAus]

@@kaviteshdeo2735 that would be a long video. Best done outside KZbin. Something like a course.

[@rdg5329]

Are you guys from? In Australia at least in my company we use Space Gass, in Brazil I used Robot.

[@ZubiDubi-g3c]

Smiling face ❤

[@bengthebrazilianengineerinAus]

☺

[@gourabsarker9552]

Sir what type of engineer are you?

[@svoids]

Nuclear engineer

[@bengthebrazilianengineerinAus]

Structural Engineer

[@bengthebrazilianengineerinAus]

@@svoids haha I think I've never met a nuclear engineer. That would be cool though