What was it developed for and when to use it? All the necessary information are summed up in one of the previous blog posts dedicated to this topic. The HSS connection design and analysis couldn't be precise enough without the GMNA (geometrically and materially nonlinear analysis). Other resources to hollow section connections
( red line - thin-walled members, green line - standard members in compression, blue line - standard members in tension) Rhinoceros/Grasshopper -> Pangolin plugin -> ConSteel -> IDEA StatiCa Connection -> Tekla Structures It's a success story where demanding architectural concept, engineering skills, and modern design tools met accordingly. How to deal with the hollow section connections?Ī masterpiece in using hollow sections for the roof structure, even with relation to the BIM interconnection between several design tools, is HUNGEXPO project provided by KÉSZ Romania.
Bolted connections are difficult to install since the section is closed. Not ideal as flexural (bending moment-resisting) members due to more steel usage compared to an equivalent I-shape section. In this new mill, they increased the maximum tube sizes up to: Until now, the maximum HSS size provided in the US was 16"x16"x5/8" (406x406x16 mm) Speaking of a wide range of standard sizes - what are the maximum standard sizes available these days?Īn answer could be found in the new world's largest continuous ERW mill just recently built in Chicago as the pride of US steel pipe and tube manufacturer Zekelman Industries. Usable as a jacket for the concrete column (for increased axial capacity). also higher compression capacity for the same unbraced length torsional resistance up to 200 times greater than the open sections (I, C, L, and T shapes) less surface area with lower finishing costs 
weigh less, so in general, they should be cheaper per meter
Aesthetics - clearer look than the open sections. (the basic material is heated to white-hot and molded into a cylinder and then a bullet-shaped piercer point is pushed through) Advantages of HSS members
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