11. The Hornet structure is built up from aluminium tubing, riveted together with gussets . 12. The aircraft is made from aluminum tubing that is pop riveted together using gussets . 13. The aircraft is made from aluminum tubing and gussets which are pull riveted together. 14. The copper and aluminum gusset plates also provide a more attractive finish for exposed structures. 15. This fills all the gussets around the cores and ensures that the cores cannot untwist. 16. Charles Goodyear's development of vulcanised rubber enabled the invention of the elastic gusset boot. 17. The Blatnik Bridge was reduced to two lanes temporarily until the gusset plates could be strengthened. 18. However, on March 20, 2008, four gusset plates were found to be bent. 19. Common bearing type connections include : shear tabs, beam supports, gusset plates in trusses. 20. The resulting design uses aluminum tubing and pop riveted gussets , in place of wooden structure.