**Author details**

Sayed Hemeda\*

Figure 26. Natural frequency of vibration of the 5thfloor (wooden).

0

**frequency (HZ)** 

**Fundamental resonance**

0

4

8

12

**Amplification Factor**

16

20

1

2

3

4

5

ElSakakini Palace is an important monument in Egypt. We presented the main results of the seismic hazard analysis and the geophysical campaign to estimate the main characteristics of the ground response and the structure. Based on the available maximum intensity maps for historical earthquakes (>2200BC) the maximum Mercalli Intensity

The peak horizontal acceleration at the seismic rock basement found at -35m

) (0.19 g). We determined the average soil profile using different geophysical

different geophysical campaigns. It is found that the upper layer has an average shear wave velocity lower than 300m/s and a thickness of 5 to 10meters. It is a man made fill material in rather loose conditions. Below there is a clayey material with average Vs velocity equal to 400-600m/s. At -35m in average we found saturated compacted sand and gravels with Vs velocity exceeding 700m/s. It is considered as the seismic bedrock for the foreseen detailed

The peak horizontal acceleration at the seismic rock basement found at -35m approximately, and for 10% probability of exceedance in 50 years is 144 cm/sec2 (0.147g), while for 100 years

campaigns. It is found that the upper layer has an average shear wave velocity lower than

ElSakakini Palace is an important monument in Egypt. We presented the main results of the seismic hazard analysis and the geophysical campaign to estimate the main characteristics of the ground response and the structure. Based on the available maximum intensity maps for historical earthquakes (>2200BC) the maximum Mercalli Intensity expected at ElSakakini

) (0.19 g). We determined the average soil profile using

0 1 2 3 4 5 6 7 8 9 10 **Frequency (Hertz)**

**frequency (HZ) Amplification Factor**

**Amplification Factor** 

0 1 2 3 4 5 6 7 8 9 10

w 2-2

(0.147g),

0

1

2

3

4

5

approximately, and for 10% probability of exceedance in 50 years is 144 cm/sec<sup>2</sup>

Table 5.Natural frequencies of vibration of El Sakakini Palace.

**Floor Fundamental resonance** 

Basement 3 1.3-2 1st Floor 3-3.5 1.4-2.8 2nd Floor 3-4 3-4.5 3rd Floor 3-4.3 5.5-8 4th wood Floor 3-4.5 7.5-8 5th wood Floor 2.5 12-20

Basement 3 1.3-2

Floor 3-3.5 1.4-2.8

Floor 3-4 3-4.5

Floor 3-4.3 5.5-8

wood Floor 3-4.5 7.5-8

wood Floor 2.5 12-20

0 1 2 3 4 5 6 7 8 9 10 **Frequency (Hertz)**

**Figure 26.** Natural frequency of vibration of the 5thfloor (wooden).

0 1 2 3 4 5 6 7 8 9 10

w 2-1

30 Engineering Seismology, Geotechnical and Structural Earthquake Engineering

0

1st

2nd

3rd

4th

5th

**6. Conclusions**

Palace site is VII.

is 186 (cm/sec2

10

20

**Amplification Factor**

30

**5. CONCLUSIONS** 

**Floor**

expected at ElSakakini Palace site is VII*.*

**Table 5.** Natural frequencies of vibration of El Sakakini Palace.

site-specific analysis of the ground response.

while for 100 years is 186 (cm/sec2

Address all correspondence to: hemeda@civil.auth.gr

Conservation Department, Faculty of Archaeology, Cairo University, Egypt
