Fail To Design = Design To Fail.
There is no advantage. Tubes cost more; are more difficult to fabricate & they are subject to internal corrosion.
But thanks for asking.
Some leviathans manufactured in Germany & behind the Iron Curtain used tubular structures which were pressurised so that weld defects could be identified. That complexity could be used anywhere depending on the level of instrumentation and cost benefit. Most 'outside world' similar structures have a design life of 20 years which is quite realistic & economic when proper weld standards are applied to any type of section. ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Some Advantages...
There's some advantages
- for compression members tubes are the optimum choice --> least weight
- compared to designs from open sections, the overall surface is less and so is the expense for corrosion protection
- considering wind forces the resistance factor of h. t. s. is least compared to open sections --> important for e.g. trestles on bridges or booms
As far as i know, the risk of internal corrosion can be minimized to an acceptable level achieving sufficient design life. The tight welding must not nessessarily be tested by pressurization, at least for subordinate structural members.
Square hollow sections have advantages over circular h.s. when manufacturing structures.
Regards
R. ■
Hollow tubular sections in trestles for belt conveyors
What are the advantages in using tubular profiles in the design of trestles? Are trestles with tubular profiles cheaper than trestles made with standard profiles like angles and I beams?
Or why is the reason tu use tubular profiles on trestles instead angles and ■