Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

(Smaller) Portal Frame Structure

Status
Not open for further replies.

rookie96

Structural
Mar 9, 2024
5
0
0
SA
I am requested to design a steel structure shed with specific dimensions on a pre poured reinforced concrete slab of 200mm thickness. The main force acting is wind load, I have tried to look for design examples of structures this size but couldn't find any, so I applied portal frame structure theory, and these are the sizes I ended up with in the image.

My question is for a pin-based structure of this size is this design feasible or is there a more convenient design method to build.

I'm also thinking to remove the haunches since the maximum moments are low (<30kNm).

model_hl0swc.jpg
 
Replies continue below

Recommended for you

It'd work but not be very economical - a mono pitched or flat roof would simplify the fabrication a bit, as you say haunches are unlikely to be required.

Have you made full use of slack horizontal deflection limits and partial base fixity at SLS?


 
For a shed that size I would not bother with the haunches.

I would also make the roof rafter a single member instead of putting the splice in the middle. If you want the gable roof use variable height purlin cleats to achieve the falls.
 
Status
Not open for further replies.
Back
Top