Efficacy of the Combined Use of Bed Sill and Sacrificial Piles to Control Local Scour around Circular Bridge Piers

Table 3

Geometric parameters of sacrificial piles.

Pile arrangement		X/D			α	β
Triangular	3, 5	2.5	D/6	D	30°, 60°	—
Transverse	3, 5	2	D/6	—	—	—