December 3, 2025 Regular Meeting - WEHI Transcript

01/05/2026 02:58:16 PM Page 13 to 16 of 68 4 of 17 sheets 13 likely to make a big difference in the stability1 analyses based on our experience.2 What does the phrase, dead load, refer to?3 Q. Dead load is the weight of all the structural4 A. elements in the building. In other words, the weight of5 the walls, the ceilings, the floors, all the structural6 elements.7 Now, what does it mean where you say, "The8 Q. evaluation did not include an evaluation of the benefits9 to 'weight credit' achieved by removal of the existing10 soils in the basement."11 Well, where you take the bearing load of the12 A. building you are removing -- let's say soil weighs 12013 pounds a square foot, cubic foot, if you remove 10-feet14 of soil, let's say for the basement, in this case it's15 up to 20-feet of soil, that means that the weight is16 being taken off of the bearing surface, you eliminated17 that weight so you can reduce the effect of the new load18 on the foundation due to removal of the soils that are19 in place. It's called weight credit.20 Now, how do we know there will be a real benefit21 Q. if there's no evaluation of it?22 It's obvious that it's a benefit.23 A. But do you know what the benefit will be?24 Q. Yeah, I told you, if I take 10-feet, 1200 pounds25 A. 14 credit, which exceeds the load, that has a credit to the1 building.2 Okay.3 Q. So even though you don't have the drawings about4 the deadweight, the distributed dead loading?5 No, I said there is a benefit they could apply to6 A. it and that would likely keep the influence of the7 building in the neighborhood that they're assuming.8 How do we know what the effect of that weight9 Q. credit would be if we don't have the drawings as to the10 distributed dead load?11 You multiply 120 pounds cubic foot times 10-feet12 A. and you get 1200 pounds per square feet.13 No, I understand. If you don't know what the14 Q. dead load is how do you apply the credit?15 Well, it's whatever the final load that the16 A. foundation sees is the dead load minus the 1200 pounds17 of square foot. Which is less than the weight of the18 building that they're predicting.19 Where does your figure show that though? Show20 Q. the weight of the building.21 They assumed the building would be a load of 100022 A. pounds per square foot at the foundation level. That's23 in their report.24 And what percent differential would one expect25

t of the building.21 They assumed the building would be a load of 100022 A. pounds per square foot at the foundation level. That's23 in their report.24 And what percent differential would one expect25 Q. 15 potentially if we had drawings as to distributed dead1 loading?2 The differential, it would be a standard. That's3 A. a standard foundation design. It has in effect on the4 stability of the slope, which I think is the issue5 tonight.6 Okay. Thank you.7 Q. Have you been able to identify the actual high8 point of the ridge from any of the records?9 Yes.10 A. Okay.11 Q. Where does that appear in the record?12 The high point on the, I think it's said it in13 A. the report near Langan's boring. It's right at the last14 test pit 4 on the plan and it's in that Langan boring --15 it says on the report, Langan boring LB-3.16 Well, the building is 800 feet long and so it's17 Q. going to run along the ridge 800 feet?18 You asked me the high point. The high point is19 A. here. That's the highest elevation on the ridge.20 I apologize. Have you identified the ridge line21 Q. itself?22 Yes, the ridge line is identified on the drawing23 A. as a line that roughly runs through it and right about24 here, like this.25 16 May I see that.1 Q. CHAIRMAN BAGOFF: Do you know what page you2 are looking at?3 MR. AFRAN: Yeah, I will do that.4 There is a very faint line about a quarter of an5 A. inch to half an inch from the line of the building. It6 sort of follows the high point of the ridge.7 Is that the hyphenated line with the graph line8 Q. moving up and down?9 Should I come over and point it out to you?10 A. MS. McGOVERN: Can we have a description of11 the document survey, what it is?12 MR. AFRAN: The document is Langan13 Engineering, it's a document that is described as14 Investigation Plan and bears the date of 6/18/2025 drawn15 by RLB checked by AY. It's a one page engineering16 drawing.17 MS. McGOVERN: Okay. Thank you.18 THE WITNESS: That was in the report. The19 original report.20 So let me walk -- I will save you the trip. So21 Q. let me just walk over to you. I see two lines, one is a22 dotted line somewhat faint.23 It's the dotted line.24 A. And I see a graph line that's moving up and down?25 Q.