A Simplified Procedure for Base Sliding Evaluation of Concrete Gravity Dams under Seismic Action

Table 11

New dams: values of 𝑦_𝑅 (mm) for each dam type evaluated with the spectral acceleration of Table 7 with reference to SLV, SLC, and an action with return period of 𝑇_RET= 475 years, for granite (n.c.: not calculated, —: no residual displacement) (case of normal flood and case with 𝐿_𝑤/𝐿=0.85).

Dam tag	Rock type	Normal flood			𝐿𝑤/𝐿=0.85
		SLV 𝑦𝑅	SLC 𝑦𝑅	SL475  𝑦𝑅	SLV 𝑦𝑅	SLC 𝑦𝑅	SL475  𝑦𝑅
2	granite	n.c.	n.c.	17	8	11	—
3		n.c.	n.c.	40	19	28	—
4		n.c.	n.c.	80	45	58	—