Bending Capacity of Concrete-Encased Underground Electrical Duct Banks under Monotonic Loading: An Experimental Study

Table 2

Geometric dimensions and reinforcement specifications for specimens.

Specimen	B (mm)	H (mm)	D (mm)	Conduit layout	Longitudinal; bars (HRB335)	Stirrups (HPB300)
A1	400	650	200	2 × 1	Top: 3φ8; Bottom: 3φ12	φ8@250
A2	400	650	200	2 × 1	0	0
B1	650	400	200	1 × 2	Top: 3φ8; Bottom: 2φ12&2φ8	φ8@150
B2	650	400	200	1 × 2	0	0

Notes. B: section width of main structure; H: section height of main structure; D: diameter of conduit; 3φ8: three 8 mm longitudinal bars; φ8@150: 150 mm distance between 8 mm stirrups.