Question

Scaffolding supports workers on the exterior of tall buildings. The structure is essentially long vertical tubes with OD=2.5in and ID=2.2in and a length of 8 feet. The tubes are loaded in compression and can be treated as pinned-pinned. The material has a young's modulus of 30Mpsi and a yield strength of 100kpsi. a. Determine the slenderness ratio for the columns b. Determine the maximum compressive load for a single tube using an appropriate buckling failure theory

Answer 1

ES Least Rading of Gyration is + Kalim (051-. (dodi) A (2.52 2.2²) 4. in Ik= 0.8325 in glendeoness ratio es J R = Lo - pinned pinned . le=L end, La siroa L. 8812 K 0.8.325 5. Ri= 115.31 |_ 1.. 1 Maximum Compressive Load eş 'n çi e memory [do" -chi4) | L Por= (2.54-2.24) n² x 30x100 x 7 (8X12)2 I Per= 24660:3 pounds )