TempStructures
Structural
- Jan 31, 2017
- 16
I'm performing some load comparisons on an older Steel Tub bridge in order to attempt to justify the use of an outrigger crane for purposes of some retrofit work.
I'm comparing outrigger loads from a crane with HS-20 loading. The idea is to place the outriggers over the stems to avoid loading the deck.
AASHTO Std. Spec. (17th Ed. sec. 10.39.2) distributes wheel loads to a BOX. However, I need the wheel loads distributed to a STEM in order to compare with the proposed outrigger loads.
Note that the outrigger spreads are wide enough so as to land on stems of (2) different tubs. Also note the outrigger loads are in the 60k range, so this has a chance of working. Not trying to use a 300T hydro or some nonsense.
Any thoughts are appreciated.
I'm comparing outrigger loads from a crane with HS-20 loading. The idea is to place the outriggers over the stems to avoid loading the deck.
AASHTO Std. Spec. (17th Ed. sec. 10.39.2) distributes wheel loads to a BOX. However, I need the wheel loads distributed to a STEM in order to compare with the proposed outrigger loads.
Note that the outrigger spreads are wide enough so as to land on stems of (2) different tubs. Also note the outrigger loads are in the 60k range, so this has a chance of working. Not trying to use a 300T hydro or some nonsense.
Any thoughts are appreciated.
