The following sentences a-e are taken from the abstract of a research article. The first and the last sentences are given, but the rest sentences are in a scrambled order. Put them in the correct order. a) Based on this we conclude that in the Pine Grove Bridge the arch is structurally dominant, and the truss provides necessary reinforcement under large concentrated live loads. b) From our research we found that the loading of the arch can be as much as three times greater than the truss, as the arch is more efficient in carrying dead load, and the truss provides necessary bending rigidity during concentrated live loads. c) Maximum stresses were found to occur at the springing of the arch, and no elements are overstressed by current design standards. d) The objective of this study is to gain a structural understanding of the Burr arch-truss, specifically as found in the Pine Grove Bridge. e) The scope of the study involves first-order linear elastic analysis of the truss, but does not include analysis of specific connections.
A、ebacd.
B、debca.
C、baecd.
D、dbeca.