Notification, Q & A

Question 1: I have a question about the bottom conditions: is there a waterproofing membrane that goes around the bottom and physically separates the soil mass from the shaking table? Do you have a detail of the base before starting pouring the soil?

Question 2: Is there any measure of the horizontal stresses in the soil? Did you perform CPTs or dilatometers before the test?

Question 3: I’m assuming the following filling steps: 1) dense send; 2) loose sand; 3) water up to - 0.6; 4) foundation; 5) crust; 6) top load in the foundation block; 7) shaking.

Question 4: The signal has essentially zero acceleration up to 2-3 sec and again almost zero acceleration after about 18 seconds. The shaking is essentially about 16 seconds. Are the benchmark displacement measured after 80 seconds or after the significant motion?

Question 5: I’m assuming a density of the concrete of 2.4 ton/m3. Is this ok?

Question 6: There are a few discrepancies about the RD of the layers depending on the method used to measure it. Which one should we consider for the analysis?

Question 7: Can I use a numerical modeling approach to predict the settlement response or strictly it should be 2D or 3D analytical model?

Question 8: Am I correct in assuming that the blue steel frame is not connected to the laminar box? Looking at the picture it looks like there is a gap. I just want to be sure about it.

Question 9: We are trying to understand the construction sequence outlined in Question 3 of the 10/31 update Q&A set, and your response: after water was filled up to -0.6m, to the top of the thick loose sand layer, surely 200mm of ‘crust’ was placed on top of the thick loose sand layer prior to the placement of the foundation? The remaining 400mm of crust was then placed around the foundation? Was the 200mm of crust placed across the full width of the box prior to placement of the foundation?

Question 10: It is not clear whether or not we can filter the input ground motion or not. There are a lot of high frequency components shown but a typical mesh will filter these out if we are to complete the simulation in a reasonable time.

Question 11: Are the teams to be comprised of just students, or can they include professors?

Question 12: Could you please let me know the center of mass on the superstructure, or the height of superstructure?

Question 13: Is the load value of 41.6 KPa applied on the footing, so the contact pressure will be 41.6 KPa + weight of the footing, or is it that value (41.6KPa) the value of the absolute contact pressure (load + footing weight)?

Notification, Q & A

Question 1: I have a question about the bottom conditions: is there a waterproofing membrane that goes around the bottom and physically separates the soil mass from the shaking table? Do you have a detail of the base before starting pouring the soil?

Question 2: Is there any measure of the horizontal stresses in the soil? Did you perform CPTs or dilatometers before the test?

Question 3: I’m assuming the following filling steps: 1) dense send; 2) loose sand; 3) water up to - 0.6; 4) foundation; 5) crust; 6) top load in the foundation block; 7) shaking.

Question 4: The signal has essentially zero acceleration up to 2-3 sec and again almost zero acceleration after about 18 seconds. The shaking is essentially about 16 seconds. Are the benchmark displacement measured after 80 seconds or after the significant motion?

Question 5: I’m assuming a density of the concrete of 2.4 ton/m3. Is this ok?

Question 6: There are a few discrepancies about the RD of the layers depending on the method used to measure it. Which one should we consider for the analysis?

Question 7: Can I use a numerical modeling approach to predict the settlement response or strictly it should be 2D or 3D analytical model?

Question 8: Am I correct in assuming that the blue steel frame is not connected to the laminar box? Looking at the picture it looks like there is a gap. I just want to be sure about it.

Question 10: It is not clear whether or not we can filter the input ground motion or not. There are a lot of high frequency components shown but a typical mesh will filter these out if we are to complete the simulation in a reasonable time.

Question 11: Are the teams to be comprised of just students, or can they include professors?

Question 12: Could you please let me know the center of mass on the superstructure, or the height of superstructure?

Question 13: Is the load value of 41.6 KPa applied on the footing, so the contact pressure will be 41.6 KPa + weight of the footing, or is it that value (41.6KPa) the value of the absolute contact pressure (load + footing weight)?

Notification, Q & A

Notifications, Q&A

Question 1: I have a question about the bottom conditions: is there a waterproofing membrane that goes around the bottom and physically separates the soil mass from the shaking table? Do you have a detail of the base before starting pouring the soil?

Question 2: Is there any measure of the horizontal stresses in the soil? Did you perform CPTs or dilatometers before the test?

Question 3: I’m assuming the following filling steps: 1) dense send; 2) loose sand; 3) water up to - 0.6; 4) foundation; 5) crust; 6) top load in the foundation block; 7) shaking.

Question 4: The signal has essentially zero acceleration up to 2-3 sec and again almost zero acceleration after about 18 seconds. The shaking is essentially about 16 seconds. Are the benchmark displacement measured after 80 seconds or after the significant motion?

Question 5: I’m assuming a density of the concrete of 2.4 ton/m3. Is this ok?

Question 6: There are a few discrepancies about the RD of the layers depending on the method used to measure it. Which one should we consider for the analysis?

Question 7: Can I use a numerical modeling approach to predict the settlement response or strictly it should be 2D or 3D analytical model?

Question 8: Am I correct in assuming that the blue steel frame is not connected to the laminar box? Looking at the picture it looks like there is a gap. I just want to be sure about it.

Question 10: It is not clear whether or not we can filter the input ground motion or not. There are a lot of high frequency components shown but a typical mesh will filter these out if we are to complete the simulation in a reasonable time.

Question 11: Are the teams to be comprised of just students, or can they include professors?

Question 12: Could you please let me know the center of mass on the superstructure, or the height of superstructure?

Question 13: Is the load value of 41.6 KPa applied on the footing, so the contact pressure will be 41.6 KPa + weight of the footing, or is it that value (41.6KPa) the value of the absolute contact pressure (load + footing weight)?