ML20053E555
| ML20053E555 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 06/01/1982 |
| From: | CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | |
| Shared Package | |
| ML20053E550 | List: |
| References | |
| 00072090, 72090, NUDOCS 8206090015 | |
| Download: ML20053E555 (27) | |
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ATTACHMENT I-1 i
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TECHNICAL REPORT STRUCTURAL STRESSES INDUCED BY DIFFERENTIAL SETTLEMENT OF THE i DIESEL GENERATOR BUILDING 1,
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e O MIDLAND PLANT UNITS 1 AND 2 DIESEL GENERATOR BUILDING 0 0 3 ~ "' ^ ; O
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SETTLEMENT DATA ANALYSIS CONTENTS
1.0 INTRODUCTION
1 2.0 GENERAL CONSIDERATION OF BUILDING SETTLE- 1 MENT AND STRUCTURAL RESPONSE 3.0 SETTLEMENT DATA, MEASUREMENT LOCATIONS, AND 2 METHODOLOGY TO DERIVE ORIGINAL SETTLEMENT DATA 4.0 DATA ANALYSIS 4
, 5.0 DISCUSSION OF THE SURVEY DATA 6
6.0 CONCLUSION
S 8 REFERENCES 9 TABLES 1 Exterior Wall Settlement Data 2 Difference of Settlement Between Two Consecutive Measurement Dates of Markers for Exterior Wall 3a Relative Displacement Along North Wall for Settlement Markers 3b Relative Displacement Along South Wall for Settlement Markers 4a Angle Variation for Markers 1-22-21 Along Exterior South Wall 4b Angle Variation for Markers 21-20-3 Along Exterior South Wall 5 Result of Warpage Analysis ,
j FIGURES l
Derivation of Differential Settlement From Settlement Data
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l 2 Measurement Locations 3 Settlement Along South Wall 4a Settlement-Time Curves for South Wall 4b Settlement-Time Curves for North Wall 5 Analysis of Angle Variation 6 Warpage Analyr,is t
7a Modified Settlement-Time Curves for South Wall
. 7b Modified Settlement-Time Curves for North Wall-l i
8 Differential Settlement Determination ii
J MIDLAND PLANT UNITS 1 AND 2 DIESEL GENERATOR BUILDING l
SETTLEMENT DATA ANALYSIS l I
1.0 INTRODUCTION
This report presents the analysis of the surveyed settlement data of the diesel generator building (DGB). The reported settlement data obtained between November 24, 1978, and November 19, 1979, were studied.
Section 2.0 presents a general discussion of the structural response due to differential settlement. (Differential settlement is defined as structural deformation which induces stresses, i.e., rigid body motion is not considered to be differential settlement.) As indicated in this section, an accurate settlement data set is required for structural analysis.
A description of the settlement data, measurement location, and methodology used to derive the original settlement data is presented in Section 3.0. The settlement data in a time-history form is presented in this section. The effectiveness of settlement in the time-history form is discussed.
Section 4.0 presents the four different analyses made on the original settlement data. The original data analyzed in this section do not indicate a consistent structural deformation. A further discussion of the accuracy of the settlement data is provided in Section 5.0.
Conclusions of this study are presented in Section 6.0.
2.0 GENERAL CONSIDERA'fION OF BUILDING SETTLEMENT AND STRUCTURAL i
RESPONSE
! Figure 1 illustrates the building settlement data and j differential settlement derived from the settlement data. The
- stresses induced on the structure from date i to date j are functions of the relative differential displacements and are l
defined an D 2, D,3 and D 4 in Figures 1b and Ic.
1 Figure la indicates that the elevation measurement is subjected to an assumed measurement error (E). The accuracy of the measured absolute total settlement is higher than the accuracy of the calculated relative differential settlement. Letting S n be the absolute settlement of a particular measurement point, the
, error of total settlement is E/S n. The errcr of differential settlement is E/Dn. It is obvious that E/D n is much larger than f E/S n.
, 1
Midland Plent Units 1 Ond 2 Diesel Generator Building Settlement Data Analysis If E/Dn is large, the differential settlement value (Dn) should not be imposed on the structure for the structural analysis. The absolute settlement value (Sn), however, has a higher accuracy and, therefore, may be utilized. The soil stiffness derived from S n may be used to determine the structural responses.
3.0 SETTLEMENT DATA, MEASUREMENT LOCATIONS, AND METH_CDOLOGY TO DERIVE THE ORIGINAL SETTLEMENT DATA The settlement data of the DGB were cbtained at different locations during different time periods. Figure 2 illustrates the locations of " scribe" and permanent "narkers."
Before installation of the permanent building markers (DG markers 1, 3, and 20 through 29), settlements had been monitored by surveys on construction scribes which were elevation marks placed on the inside of the building exterior walls 3 or 4 feet above final grade. A total of 26 such construction scribes were placed between March 28, 1978, and May 12, 1978. Elevation surveys of these scribes began on July 10, 1978, and continued at weekly intervals until November 24, 1978.
The first permanent building settlement marker, DG-3, was installed May 9, 1978, marker DG-1 was installed September 9, 1978, and markers DG-20 through 29 were installed November 15, 1978. The permanent markers were installed on the outside of the building walls 1 to 4 feet above final grade and consisted of short steel rods grouted into the walls. When the surcharge was placed, these permanent markers were no longer accessible and temporary markers were set in the mezzanine floor at elevations 663.5 to 664. Temporary markers consisted of nails set in the concrete in locations generally above the corresponding permanent markers.
The settlement record included settlements monitored by the construction scribes which had occurred up to November 24, 1978.
The settlement data had been calculated by assuming the settlement of a given DG marker on November 24, 1978, equal to the settlement recorded at the scribe for that particular area of the building. Beginning December 1, 1978, and up to and including March 22, 1979, only the permanent DG markers were optically surveyed. Placement of the surcharge prevented the use of the permanent markers after March 22, 1979, and temporary markers were installed to continue monitoring the settlements.
The first survey of the temporary DG markers was made on March 24, 1979 (2 days after the final survey of the permanent markers), except for temporary markers DG-23 and 29 which could not be surveyed until April 9, 1979 (18 days after the final survey of the permanent markers). Temporary DG markers were surveyed during surcharge and surcharge removal until 2
. . i Midland Pltnt Units 1 and 2 Diesal Generator Building Settlement Data Analysis 000t o-"Ouu September 14, 1979, according to the settlement record table. By this time, the permanent D3 markers were accessible.
The procedure used to obtain and calculate the originci settlement data was to:
- a. Convert the settlements of the construction scribes to the corresponding permanent markers for the period between July 10, 1978, and November 24, 1978.
- b. Set the settlements of the permanent DG markers on November 24, 1978, equal to the settlements measured by construction scribes up to that date, for the particular area of the building where a given DG marker was located.
- c. Obtain the elevations of the DG markers by optical surveys and calculate the settlement of a marker on a given day by adding the settlement of the marker on November 24, 1978, to the change in elevation of the marker between November 24, 1978, and the day of the survey. This procedure continued until March 22, 1979, when the permanent DG markers were no longer accessible.
- d. Install temporary DG markers above the level cf the surcharge and obtain their elevations on March 24, 1979 (except for temporary markers DG-23 and 29 which were not surveyed until April 9, 1979). The settlements of the permanent markers on March 22, 1979, were added to the elevations of the corresponding temporary markers on March 24, 1979, to establish base elevation for the temporary markers. Because temporary markers DG-23 and 29 were not surveyed until several days after the final survey of the permanent markers, settlements of these markers between March 22 and April 9, 1979, were estimated from the behavior of nearby markers and these estimated settlements were added to the April 9, 1979, elevations to establish base elevations for these two markers.
- e. Calculate the settlements of the temporary DG markers on a given day by subtracting the marker elevation determined by surveys from the base elevation established on March 24, 1979 (April 9, 1979, in the case of markers DG-23 and 29). Settlements of the temporary markers were calculated in this manner until September 14, 1979.
- f. Obtain elevations of the permanent markers on September 14, 1979, and calculate settlements of the permanent markers on that date by subtracting the marker elevations from base elevations for the permanent 3
Midland Plc.nt Units 1 and 2 Dicscl Gensrator Building Settlement Data Analysis 00n-7g;O i-markers. The base elevations for the permanent markers were established for December 2, 1978, by adding the settlements which had occurred up to that date (these settlements were estimated from scribes up to November 24, 1978) to the elevations of the markers obtained from surveys on December 2, 1978.
The settlement data were plotted in Bechtel Drawings SK-C-626 and SK-C-629 (Reference 1). Figure 3 illustrates the settlement values of the south wall for several dates. The settlement data plotted in Reference 1 for permanent markers DG-20, 23, 24, 25, 26, 27, and 29 for the period from July 10, 1978, to November 24,.
1978, were derived from the settlement data of the nearby scribes by taking the numerical average values. Because the structure was only partially constructed before November 24, 1978, and the structural analysis shows that the stress level is low because of high structural flexibility, data earlier than November 24, 1978, are less important and, therefore, are not considered in this study.
The reported settlements after November 24, 1978, are li '-l in Table 1 and are plotted in a time-history form in Figu ..
These data were originally used in the settlement and structural evaluations.
The settlement-time relation shown in Figure 4 is a better form for studying the accuracy of the survey. The presentation method used in Reference 1 and Figure 3 (i.e., the settlement-marker location relationship) is misleading. For example, the structural shapes plotted in Figure 3 are based on the premise that the structure deformed according to the reported data without considering survey accuracy.
Figure 4 reflects survey errors. A discussion of these errors is presented in Section 5.0. Section 4.0 presents numerical analyses based on the original data.
4.0 DATA ANALYSIS The settlement history data for the exterior wall settlement markers shown in Figure 2 are listed in Table 1. The data were analyzed and are presented in this section. The analyses include:
- a. Difference of settlements between two consecutive measurement dates
- b. Relative displacement along north and south walls
- c. Angle variation analysis 4
Midlcnd Plcnt Units 1 and 2 l Diosal Genarctor Building '
000T2380 Settlement Data Analysis ;
- d. Warpage analysis These analyses are discussed as follows.
4.1 DIFFERENCE OF SETTLEMENTS BETWEEN TWO CONSECUTIVE MEASURE-MENT DATES The values of S3 -S 3 for all marker points en the exterior wall of the DGB as shown in Figure 2 are listed in Table 2. The negative values indicate that either the structure moved up or a potentiel measurement error existed. Because the structure -
cannet easily move up on its own weight, it is likely that negative values indicate a measurement error.
4.2 RELATIVE DISPLACEMENTS ALONG NORTH AND SOUTH WALLS To establish a datum point, the displacements of the exterior corners are normalized to zero. The relative displacements of the interior points D2 , D 3, and D, as defined in Figure 1 are calculated and are listed in Table 3.
If the measurement was 100%' accurate, these relative displacements should be positive, negative, or zero for differential settlement.
- a. If the relative displacement is positive or negative, -
the structure is undergoing differential settlement and the curvature increases or decreases.
- b. If the relative displacement is zero, the structure remains at the previous curvature.
Table 3 shows that data varies irregularly. It cannot be concluded from these data that the structure developed differential settlement in the period considered.
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l 4.3 ANGLE VARIATION ANALYSIS Figure 5 illustrates the method used to calculate the term called
" angle." The variations, with respect to time, of " angles" between markers 1-22-21 and 21-20-3 are listed in Tables 4a and 4b.
If the measurement is 100% accurate, the angle will continue increasing or decreasing through the survey period for differential settlement or will remain constant for rigid body motion.
! Observations of the angle are listed below:
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Midlcnd Plcnt Units 1 End 2 Diesal Generator Building Settlement Data Analysis 00073oee Angle 1-22-21 from 11/24/78 relatively constant in the to 03/22/79 range of 179.941 degrees from 03/30/79 relatively constant in the to 09/06/79 range of 179.864 degrees from 09/14/79 relatively constant in the to 08/28/80 range of 179.934 degrees Angle 21-20-3 has a pattern identical to that of Angle 1-22-21.
Based on the difference between successive reading dates, the -
change in angle between marker points on the exterior south wall is small with a random change in algebraic sign.
Therefore, these results show that the structure developed rigid body motion in the periods during which settlements were measured and the random change in algebraic sign o# the change in angle is due to the accuracy of the measurements being taken.
4.4 WARPAGE ANALYSIS A review of the settlement data for the settlement markers on the four corners of the DGB indicates the amount of warpage the structure has attained. The method of analysis for warpage is illustrated in Figure 6. Results of this analysis are listed in Table 5.
As shown in Table 5, the warpage across the structure (IDIFD) is very small and varies with time between positive and negative values. It can be concluded from this analysis that the survey data is not accurate enough to prove that the structure has developed differential settlement (or warpage) across the corners.
l l 5.0 DISCUSSIONS OF THE SURVEY DATA The numerical data analyses presented in Section 4.0 reveal that the reported settlement data do not identify a consistent pattern of differential settlement in the overall period considered.
This warrants a further consideration of the accuracy of survey data.
l There are two types of errors in the original data (see l Figure 4). The first type is the erratic error that occurred in a particular marker elevation reading on a particular date. This type of error occurred most often in the period between December 15, 1978, and March 30, 1979. Considering the consistency of relative elevation of the north wall in the periods of December 2, 1978, to December 8, 1978, and January 26, t
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1 Midlcnd Plcnt Unito 1 cnd 2 Discsl Ganarctor Building 000'r40n0 -
Settlement Data Analysis i
1979, to February 16, 1979, the inaccuracy of readings on markers !
DG-27 and 28 in the period from December 15, 1978, to January 19, 1979, is quite obvious. Readings from marker DG-24 on January 19, 1979, is 0.012 ft lower than the average value of January 12 and January 26, 1979. Erroneous readings are also observed on May 3, 1979, for markers DG-1, 3, 22, 24, 25, and 28.
These erratic errors are clearly reflected on the settlement-time curves shown in Figure 4.
The second type of error is the systematic error that is carried over in the period from March 30, 1979, to September 6, 1979.
Inspecting the relative elevation in the periods after March 30, 1979, shows that a systematic inconsistency existed between September 6, 1979, and September 14, 1979.
The systematic error during the period from March 30, 1979, to September 6, 1979, had been studied by Mr. Peter A. Lenzini of the University of Illinois (Reference 2).
Both survey data records and Mr. Lenzini's report show that on September 14, 1979, the discrepancy between temporary and permanent markers is as high as 0.017 ft at marker DG-27, 0.016 ft at marker DG-3, 0.015 ft at marker DG-28, etc.
Mr. Lenzini corrected the original data and calculated the settlement relative to January 26, 1979.
As discussed in Section 3.0, the procedure to obtain and calculate the original settlement data in the period between March 24, 1979, and September 14, 1979, is to determine the base elevation for the temporary markers by adding the settlement of permanent markers to the corresponding temporary marker elevation. The base elevation is then used to calculate the settlements for the subsequent dates. This procedures indicates that the erratic error during the time to establish a base elevation can be carried through the period of temporary marker survey. Therefore, the erratic error becomes a systematic error.
Because the error may be about 0.02 ft, settlement-time curves in Figure 4 are smoothed and illustrated in Figure 7.
Based on Figure 7, the differential settlements developed in the south wall are plotted in Figure 8. It is found that as long as the comparisons are made within the period of the same measurement location, deflection is a rigid body motion (Figures 8a and 8b). When settlements of different measurement locations are compared, a higher curvature was observed (Figure 8c). This indicates the structure was developing rigid body motion and differential settlement was due to a survey error. This observation agrees with the angle variation analysis, as indicated in Section 4.3.
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Midland Plant Units 1 and 2 i Dicsol Generator Building l oo Settlement Data Analysis j 000t"O As indicated in Section 2.0, the absolute settlement (Sn ) has a higher accuracy than the relative settlement (D n ). To utilize the available data, the soil stiffness derived from S, may be ,
used for structural analysis. This approach can minimize the )
effect due to survey error. -
6.0 CONCL"SIONS Based on this study, the following conclusions concerning the Midland DGB settlement data are made.
6.1 The survey data varies up to 0.02 (erratic error) ft.
6.2 The existing data does not indicate a consistent pattern of differential settlement. This is proven in the differential displacement analysis, angle variation analysis, and warpage analysis.
6.3 Systematic errors are contained in the survey data.
6.4 By smoothing the settlement-time curves to correct the erratic error, the data reflect that the structure was developing rigid body motion in the period during which settlement was measured at the same locations.
6.5 Differential settlement is derived only when data obtained at different elevations were compared. This is due to systematic errors. Therefore, it is concluded that the structure is under rigid body motion during the period considered in this study.
6.6 The total settlement data has a higher degree of accuracy than the relative differential settlement values. Therefore, the soil stiffness derived from the total settlement data may be used for the structural analysis.
Because of the errors in the differential settlement values, these values should not be imposed on the structure for structural analysis.
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Dierol Gen 2rator Building Settlement Data Analysis REFERENCES 00072090
- 1. Bechtel Power Corporation, Midland Project Drawings SK-C-628 and SK-C-619, Diesel Generator' Building Settlement Data
- 2. Peter A. Lenzini, Review of Data 4
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Midland Plcnt UnitO 1 cnd 2 dig 2sl Gantrator Building Settlement Data Analysis TABLE 1 00072090 EXTERIOR WALL SETTLEMENT DATA * (Ft)
Date 1 3 20 21 22 23 24 25 26 27 28 29 781124 0.215 0.282 0.217 0.183 0.184 0.166 0.146 0.146 0.163 0.188 0.211 0.240 781202 0.217 0.295 0.238 0.195 0.188 0.167 0.146 0.155 0.178 0.202 0.226 0.249 781208 0.216 0.299 0.231 0.194 0.188 0.170 0.152 0.158 0.181 0.206 0.232 0.255 781215 0.218 0.318 0.243 0.196 0.188 0.168 0.153 0.166 0.190 0.206 0.259 0.283 781222 0.228 0.342 0.264 0.213 0.200 0.177 0.164 0.160 0.190 0.206 0.263 0.292 781229 0.229 0.350 0.272 0.219 0.204 0.177 0.159 0.168 0.190 0.206 0.264 0.299 790105 0.234 0.350 0.280 0.229 0.211 0.188 0.163 0.176 0.203 0.236 0.264 0.299 790112 0.231 0.349 0.280 0.231 0.214 0.181 0.160 0.180 0.209 0.236 0.267 0.301 790119 0.238 0.354 0.287 0.234 0.218 0.192 0.174 0.180 0.209 0.236 0.271 0.305 790126 0.234 0.356 0.280 0.227 0.210 0.188 0.164 0.180 0.209 0.236 0.261 0.303 790201 0.237 0.357 0.284 0.236 0.214 0.192 0.168 0.189 0.220 0.250 0.272 0.306 790216 0.259 0.378 0.314 0.265 0.245 0.210 0.179 0.205 0.239 0.266 0.288 0.329 790223 0.277 0.398 0.335 0.282 0.261 0.216 0.181 0.201 0.232 0.267 0.289 0.340 790302 0.280 0.428 0.366 0.305 0.274 0.225 0.182 0.201 0.232 0.267 0.312 0.364 790309 0.322 0.451 0.401 0.338 0.315 0.251 0.207 0.22* 0.256 0.297 0.324 0.383 790315 0.344 0.466 0.407 0.346 0.324 0.260 0.213 0.231 0.263 0.303 0.328 0.397 790322 0.354 0.476 0.411 0.352 0.327 0.266 0.215 0.235 0.271 0.312 0.340 0.401 790330 0.349 0.495 0.425 0.369 0.337 0.270 0.227 0.255 0.305 0.342 0.371 0.426 790406 0.400 0.536 0.475 0.421 0.380 0.303 0.242 0.274 0.321 0.359 0.384 0.453 790413 0.439 0.570 0.514 0.452 0.413 0.33? 0.260 0.281 0.331 0.369 C.397 0.477 790420 0.442 0.577 0.522 0.458 0.420 0.336 0.260 0.284 0.330 0.372 0.398 0.479 790426 0.454 0.583 0.526 0.467 0.424 0.345 0.268 0.289 0.335 0.375 0.404 0.486 l
790503 0.449 0.583 0.528 0.465 0.423 0.341 0.266 0.283 0.334 0.374 0.402 0.485 l 790511 0.464 0.594 0.536 0.470 0.435 0.352 0.277 0.294 0.337 0.379 0.409 0.492 790518 0.464 0.600 0.543 0.479 0.439 0.354 0.274 0.296 0.344 0.385 0.412 0.496 790525 0.464 0.598 0.541 0.477 0.439 0.352 0.274 0.293 0.340 0.380 0.409 0.494
.790531 0.464 0.598 0.543 0.478 0.439 0.350 0.273 0.294 0.340 0.381 0.410 0.496 790605 0.467 0.601 0.542 0.480 0.443 0.353 0.275 0.295 0.344 0.380 0.412 0.496 l
790607 0.471 0.603 0.546 0.481 0.443 0.357 0.279 0.297 0.341 0.383 0.413 0.499 790615 0.473 0.606 0.549 0.485 0.446 0.359 0.281 0.297 0.345 0.386 0.416 0.503 790622 0.477 0.612 0.555 0.487 0.447 0.361 0.283 0.300 0.347 0.389 0.420 0.507 790629 0.477 0.612 0.556 0.489 0.447 0.360 0.280 0.299 0.350 0.389 0.418 0.504-790706 0.478 0.612 0.557 0.491 0.451 0.361 0.281 0.300 0.349 0.389 0.419 0.506 790713 0.482 0.615 0.557 0.490 0.453 0.364 0.287 0.302 0.346 0.3!8 0.420 0.507 l 790720 0.482 0.616 0.560 0.492 0.454 0.365 0.285 0.302 0.348 0.389 0.419 0.508 790727 0.485 0.618 0.561 0.493 0.454 0.366 0.286 0.302 0.351 0.392 0.422 0.510 i 790803 0.484 0.620 0.561 0.495 0.454 0.366 0.288 0.302 0.351 0.391 0.423 0.510 l 790810 0.486 0.620 0.564 0.494 0.457 0.369 0.288 0.304 0.352 0.392 0.424 0.512 790817 0.479 0.615 0 159 0.491 0.453 0.364 0.285 0.306 0.352 0.394 0.423 0.511 790824 0.471 0.608 0.552 0.487 0.444 0.357 0.277 0.295 0.347 0.387 0.416 0.504 790831 0.466 0.605 0.546 0.480 0.439 0.351 0.273 0.291 0.341 0.382 0.410 0.499 790906 0.462 0.602 0.546 0.478 0.439 0.349 0.269 0.289 0.341 0.380 0.410 0.497 790914 0.464 0.616 0.544 0.477 0.448 0.358 0.271 0.298 0.330 0.363 0.393 0.493 790921 0.464 0.615 0.544 0.477 0.450 0.360 0.271 0.297 0.333 0.363 0.392 0.492 790928 0.464 0.616 0.544 0.477 0.450 0.359 0.271 0.295 0.334 0.362'O.392 0.492 800206 0.458 0.616 0.536 0.467 0.441 0.348 0.265 0.291 0.326 0.365 0.395 0.491 800627 0.459 0.615 0.538 0.469 0.441 0.349 0.264 0.289 0.323 0.361 0.422 0.487 l 800822 0.456 0.612 0.536 0.468 0.440 0.348 0.265 0.288 0.323 0.362 0.423 0.4?O 800828 0.456 0.612 0.537 0.468 0.440 0.350 0.269 0.288 0.326 0.364 0.424 0.491
- See Figure 2 for location of settlement markers.
.MLiland Plcnt Unit 0 1 cnd 2 Diesel Gsnarator Building SettlementiData Analysis i
00012090 m{ 2 DIFFERENCC OF SETTLI:ME3T BETWEEN -
I TWO CONSECUTIVE MEASUREbD'NT 3 DATES OF ' -l MARKERS FOR EXTERIOR VALL* (1lt) j l
(, 8 Date 1 Date 2 1 3 20 11 22 23 24 25 26 27 28 29 781124 781202 .002 .013 .021 .022 .004 .001 .000 .009 .015 .014 .015 .009 781202 781208 .001 .004 007 .0?f1 .000 .003 .006 .003 .003 .004 .006 .006 781208 781215 .002 .019 ,012 .002 .000 .002 .001 .008 .009 .000 .027 .029 781217 781222 .010 .024 .021 .017 .012 .009' .011- .002 .000 .000 .'004 .009 781222 .781229 .001 .008 .000% .006 .004 .000 .005 .000 .000 .000 .001 .007 781229 .790105 .005 .000 .005 .010. .CC7 .011 .004 .008 .013 .030 .000 .000 790105 790112 .003 .001 .000 .002 .003 .007 .003 .004 .006 .000 .003 .002 790112 790119 .007 .005 .007 .003 .004 .011 .014 .000 .000 .300 .004 .004 770119 790126 .004 .002 .007 .007 .008 .004 .010 .000 .000 .000 .010 .002 79C126 790201 .003' .001 .004 .009 .004 .004 .004 .009 .011 .014 .011 .003 790201 790216 .022 .021 .030 .029 .031. .018 .011 .016 .019 .016 .016 .023 790216 790223 ...018 .020 .011 .017 . 016 .006 .002 .004 .007 .001. .001 .011 790223 790302 .003 .030 .03I .023 .013 .009 .001 .000 .000 .000 .023 .024
-790302 790309 .042 .023 .035 .033 .041 .026 .025 .023 2024 .030 .012 .019 790309 790315 ,.022 .015 .006 .008 .009 .009 .006 .007 .007 .006 .004 .014 790315 790322~ .010 .010 .004' .006 .003 .006 .002 .004 .008 .009 .012 .004 790322 790330 .000 .019 .014 .017 .010 .004 .012 .020 .034 .030 .031 .025 790330 790406 .051 .041 .050 .(52 .043 .033 .015 .019 .016 .017 .013 .027 790406 790413 .039 .034 .039 .031 .033 .029 .015 .007 .010 .010 .013 .024 790413 790420 .003 .007 .003 .006 .007 .004 .000 .003 .001 .003 .001 .002 790420 790426 .012 .006 .004 '009- . .004 .009 .008 .005 .005 .003 .306 .007 790426 790503 .005 .000 .002 .002 .001 .004 .002 .006 .001 .001 .002 .001 790503 790511 .015 .011 .009 .005 .012 .011 .011 .011 .003 .005 .007 .007 790511 790518 .000 .006 .007 .00?. 004 .002 .003 .002 .007 .00( .003 .004 790518 790525 .000 .002 .002 .00? iC00 .002 .000 .003 .004 .005 .003 .002 790525 790531 .000 .000 .002 .001 .000 .002 .001 .001 .000 .001 .001~ .002 790531 790605 .003 .003 .00t .002 .004 .003 .002 .001 .004 .001 .002 .000 790605 790607 .004- .002 .004 . 001 .000 .004 .004 .002 ,003 .003 .001 .003 790607 790615 .002 .003 .003 '004 . .003 .002 .002 .000 .004 .003. 003 .004 790615 790622,.004 .006.-.006 .002 .001 .002 .002 .003 . 002 .003 .004 .004
??0622 790629 .000 .000 .001 .002 .000 .001 .003 .001 .003 .000 .002 .003 790629 790706 .001 .000' .001 .002 .004 .001 .001 .001 .001 .000 .001 .002 790706 790713 .004 '. 003 .000 .001 .002 .003 .00r .002 .003 .001 .001 .001 790713 790720 .000 .00? .003 .002 .001- f.001 .002 .000 .002 .001 .001 .001 790720 790727 .003 .002 .001_ .001 .000 .001 .001 .000 .003 .003 .003 .002 790727 790803 .001' .002 .000 .002 .000 .000 .002 .000 .000 .001 .001 .000 790803 790810 .002 .000 .003 .001 .003 .003 .000 .002 .001 .001 .001 .002 790810 790317 .007 .000 .005 .003 .004 .005 .003 .002 .000 .002 .001 .001 790817 79382.' .008 .007 .007 .004 .009 .007 .008 .011 .005 .007 .007 .007 790824 7908!1 .005 .003 .006 .007 .005 .006 .004 .004 .006 .005 .006 .005 >
790831 790906 .004 .003 .000 .002 .000 .002 -'.004 .002 .000 .002 .000 .002 790906 790914 .002 .01P .002 .001 .039 .009 .002 .009 .011 .017 .017 .004 790914 790921 .000 .001 .000 '.000 .002 .002 .000 .001 .003 .000 .0/1 .001 790921 -790928 .000 .00t4 .000 .000 .000 .001 .000 .002 .001 .001 .000 .000 790928 800206 .006 .000 .008 .010 .009 .011 .006 .004 .008 .003 .003 .001 800206 800627 .001 .001 .002 .002 .000 .001 .001 .002 .003 .004 .027 .004 800627 800822 .003 .003 .002 .001 001 .00f .001 .001 .000 .001 .001 .003 800822 800828 .000 .000 .001 .000 f.000 .0?2 .004 .000 .003 .002 .001 .001
- See Figure 2 for location of settlement. markers.
. s i.
Mid1cnd Plcnt Unita 1 cnd 2 Dicsal G2nGrator Building Settlement Data Analysis N LE 3a 00072090RELATIVE DISPLACEMENT ALONG NORTH WALL FOR SETTLEMENT MARKERS * (Ft)
F r n To Date Date 24 25 26 27 28 781124 781202 .000 .005 .007 .003 .000 781202 781208 .000 .003 .003 .002 .000 781208 781215 .000 .000 .005 .020 .000 781215 781222 .000 .007 .008 .006 .000 781222 781229 .000 .004 .002 .001 .000 781229 790105 .000 .005 .011 .029 .000 -
790105 790112 .000 .005 .006 .002 .000 790112 790119 .000 .012 .009 .007 .000 790119 790126 .000 .010 .010 .010 .000 790126 790201 .000 .003 .004 .005 .000 790201 790216 .000 .004 .005 .001 .000 790216 790223 .000 .006 .009 .000 .000 790223 790302 .000 .006 .012 .017 .000 790302 790309 .000 .001 .005 .015 .000 790309 790315 .000 .002 .002 .002 .000 790315 790322 .000 .001 .001 .000 .000 790322 790330 .000 .003 .012 .004 .000 790330 790406 .000 .005 .002 .004 .000 790406 790413 .000 .010 .005 .004 .000 790413 790420 .000 .003 .002 .002 .000 790420 790426 .000 .002 .002 .004 .000 790426 790503 .000 .004 .001 .001 .000
.000 .006 .003 .000 790503 790511 .001 790511 790518 .000 .003 .007 .005 .000 790518 790525 .000 .002 .003 .003 .000 790525 790531 .000 .002 .000 .001 .000 790531 790605 .000 .001 .002 .003 .000 790605 790607 .000 .001 .006 .001 .000 790607 790615 .000 .002 .001 .000 .000 790615 790622 .000 .001 .001 .001 .000 790622 790629 .000 .002 .006 .002 .000 790629 790706 .000 .000 .002 .001 .000 790706 790713 .000 .003 .007 .003 .000 790713 790720 .000 .002 .004 .002 .000 790720 790727 .000 .001 .001 .001 .000 i 790727 790803 .000 .002 .002 .002 .000 1
790803 790810 .000 .002 .001 .000 .000 ,
790810 790817 .000 .004 .002 .003 .000 790817 790824 .000 .003 .002 .000 .000 790824 790831 .000 .001 .001 .001 .000 790831 790906 .000 .001 .002 .001 .000 790906 790914 .000 .012 .003 .005 .000 790914 790921 .000 .001 004 .001 .000 790921 790928 .000 .002 .001 .001 .000 790928 800206 .000 .000 .006 .002 .000 800206 800627 .000 .008 .016 .024 .000 800627 800822 .000 .002 .001 .000 .000
- 800822 800828 .000 .003 .001 .000 .000 l
- Settlement marker locations are shown in Figure 2.
l
Miditnd Plcnt Unita 1 cnd 2 DiGsal G0nsrOtor Cuilding Settlement Data Analysis TABLE 3h 00072000
~
RELATIVE DISPLACEMENT ALONG SOUTH WALL FOR SETTLEMENT MARKERS * (Ft)
From To Date Date 1 22 21 20 3 781124 781202 .000 .001 .004 .011 .000 781202 781208 .000 .000 .002 .010 .000 781208 781215 .000 .006 .009 .003 .000 781215 781222 .000 .001 .000 .000 .000 781222 761229 .000 .001 .002 .002 .000
, 781229 790105 .000 .003 .008 .007 .000 ,
790105 790112 .000 .005 .004 .002 .000 790112 790119 .000 .002 .003 .002 .000 790119 790126 .000 .005 .006 .007 .000 790126 790201 .000 .001 .007 .002 .000 790201 790216 .000 .009 .008 .009 .000 790216 790223 .000 .002 .002 .002 .000 790223 790302 .000 .003 .006 .008 .000 790302 790309 .000 .004 .000 .007 .000 790309 790315 .000 .011 .010 .011 .000 790315 790322 .000 .007 .004 .006 .000 790322 790330 .000 .009 .010 .001 .000 790330 790406 .000 .006 .006 .007 .000 790406 790413 .000 .005 .006 .004 .600 790413 790420 .000 .003 .001 .002 .000 790420 790426 .000 .007 .000 .003 .000 790426 790503 .000 .003 .000 .003 .000 790503 790511 .000 .002 .008 .004 .000 790511 790518 .000 .002 .006 .002 .000 790518 790525 .000 .001 .001 .000 .000 790525 790531 .000 .000 .001 .002 .000 790531 790605 .000 .001 .001 .004 .000 790605 790607 .000 .003 .002 .001 .000 790607 790615 .000 .001 .002 .000 .000 790615 790622 .000 .003 .003 .000 .000 790622 790629 .000 .000 .002 .001 .000 790629 790706 .000 .003 .002 .001 .000 790706 790713 .000 .002 .005 .003 .000 -
790713 790720 .000 .001 .002 .002 .000 790720 790727 .000 .003 .001 .001 .000 790727 790803 .000 .000 .002 .001 .000 790803 790810 .000 .001 .002 .003 .000 790810 790817 .000 .003 .003 .000 .000 790817 790824 .000 .C01 .003 .000 .000 790824 790831 .000 .000 .003 .002 .000 790831 790906 .000 .004 .001 .003 .000 790906 790914 .000 .004 .009 .013 .000
- 790914 790921 .000 .002 .000 .001 .000 790921 790928 .000 .000 .000 .001 .000 790928 800206 .000 .004 .007 .007 .000 800206 800627 .000 .001 .002 .003 .000 800627 800822 .000 .002 .002 .001 .000 800822 800828 .000 .000 .000 .001 .000
- Settlement marker locations are shown in Figure 2.
Midicnd Plcnt Unito 1 Cnd 2 Dic031 G;ncrator Building Settlement Data Analysis TABLE 4a 00072090 ANGLE VARIATION FOR MARKERS 1-22-21 ALONG EXTERIOR SOUTH WALL Settlement Data From Tb1 1 - LAngle**
1 22 21 Angle * (Deg) Date i Date i (Deg)
Date 781124 .215 .184 .183 179.95467377 '781124 781202 .00884819 781202 .217 .188 .195 179.94582558 781202 781208 .00325775 781208 .216 .188 .194 179.94909333 781208 781215 .00675774 781215 .218 .188 .196 179.94232559 781215 781222 .00448990 781222 .228 .200 .213 179.93783569 781222 781229 .00159454 781229 .229 .204 .219 179.93943024 781229 790105 .00159454 790105 .234 .211 .229 179.93783569 790105 790112 .01124763 790112 .231 .214 .231 179.94908333 790112 790119 .00325775 790119 .238 .218 .234 179.94582558 790119 790126 .00838200 790126 .234 .210 .227 179.93744278 790126 790201 .00561142 790201 .237 .214 .236 179.93183136 790201 790216 .01725197 790216 .259 .245 .265 179.94908333 790216 790223 .00459671 790223 .277 .261 .282 179.94448662 790223 790302 .00000000 790302 .200 .274 .305 179.94448662 790302 790309 .01018715 790309 .322 .315 .338 179.95467377 790309 790315 .01800728 790315 .344 .324 .346 179.93666649 790315 790322 .01517487 790322 .354 .327 .352 179.92149162 790322 790330 .01215744 790330 .349 .337 .369 179.93364906 790330 790406 .02564049 790406 400 .380 .421 179.90800858 790406 790413 .00667191 790413 .439 .413 .452 179.90133667 l790413 790420 .00801086 790420 442 .420 .458 179.90934753 790420 790426 .01971245 790426 454 .424 .467 179.88963509 790426 790503 .00709915 790503 .449 423 465 179.89673424 790503 790511 .00635338 790511 464 .435 .470 179.90308762 790511 790518 .00150299 790518 464 .439 .479 179.90158463 790518 790525 .00302887 790525 .464 .439 .477 179.90461349 790525 790531 .00152588 790531 .464 439 .478 179.90308742 790531 790605 .00492096 790605 .467 443 .480 179.90800858 790605 790607 .00765800 790607 .471 .443 .481 179.90035057 790607 790615 .00000000 790615 473 .446 .485 179.90035057 790615 790622 .00618935 790622 .477 447 .487 179.89416122 790622 790629 .00318718 790629 .477 .447 .489 179.89097404 1790629 790706 .00767326 I
790706 .478 .451 .491 179.89864731 790706 790713 .00121307 790713 .482 .453 .490 179.8998601d ,790713 790720 .00049019 790720 .482 .454 .492 179.90035057 790720 790727 .00618935 790727 .485 .454 .493 179.89416122 790727 790803 .00160599 790803 .484 .454 .495 179.89255524 790803 790810 .00730515 790810 486 .457 .494 179.89986038 790810 770817 .00322723 790817 .479 .453 .491 179.90308762 790817 790824 .00915718 790824 471 .444 .487 179.89393044 790824 790831 .002803E0 790831 466 .439 .480 179.89673424 790831 790906 .00969124 790906 462 .439 .478 179.90642548 790906 790914 .02540588 790914 464 .448 .477 179.93183136 790914 790921 .00600433 790921 464 .450 .477 179.93783569 790921 790928 .00000000
.464 .450 .477 179.93783569 790928 800206 .00269508 790928
.458 .441 .467 179.93514061 800206 800627 .00473022 800206
.459 .441 .469 179.9304103? 900627 800822 .00323968 800627 800822 456 .440 .468 179.93364906 800822 900828 .00000000 800828 456 440 .468 179.93364906
- See Figure 5
- aAngle is the angle increment between Date i and Date j.
I
Mi"10nd Plant Unito 1 cnd 2 Diosol Ganorator Building !
4 Settlement Data Analysis l 00012090 taste 4b j ANGLE VARIATION FOR MARKERS 21-20-3 ALONG EXTERIOR SOUTH WALL Settlement Data From Tb'1,1 - ~
AAngle**
Date 21 20 ~3 Jutgle * (Deg) Date i Date 3 (Deg) 781124 .183 .217 .282 179.95256424 781124 781202 .02645493 781202 .195 .238 .295 179.97901917 781202 781200 .02593613 781208 .194 .231 .299 179.95308304 781208 781215 .00495338 781215 .196 .243 .318 179.95803642 781215 781222 .00058746 i 781222 .213 .264 .342 179.95862389 781222 781229 .00304892 781229 .219 .272 .350 179.96169281 781229 790105 .00863457 790105 .229 .200 350 179.97032738 790105 790112 .00051253 790112 .231 .280 .349 179.96951485 790112 790119 .00836945 j 790119 .234 .287 .354 179.97789429 790119 790126 .01285362 790126 .227 .280 .356 179.96503067 790124 790201 .00269508 790201 .236 .284 .357 179.96233559 790201 790216 .01554871 790216 .265 .314 .378 179.97788429 790216 790223 .00647736 790223 .282 .335 .398 179.98436165 790223 790302 .00574875 790302 .305 .366 .428 179.99011040 79030; 790309 .02967072 790309 .338 .401 .451 100.01978111 790309 790315 .01978111 790315 .346 .407 .466 180.00000000 790315 790322 .01211357 790322 .352 .411 .476 179.98788643 790322 790330 .00886726 790330 .369 .425 .495 179.97901917 790330 790406 .01109123 790406 .421 .475 .536 179.99011040 790406 790413 .02200317 790413 .452 .514 .570 180.01211357 790413 790420 .00352478 790420 .458 .522 .577 180.01563835 790420 790426 .01563835 790426 .467 .526 .583 180.00000000 790426 790503 .01211357 790503 .465 .528 .383 180.01211357 790503 790511 .00000000 790511 .470 .536 .594 180.01211357 790511 790518 .00222397 790518 .479 .543 .600 180.00988940 790518 790525 .00000000 790525 .477 .541 .598 180.00988960 790525 790531 .00574875 790531 .478 .543 .598 180.01563835 790531 790605 .00574875 790605 .480 .542 .601 180.00988960 790605 790607 .00574875 790607 .481 .546 .603 180.01563835 790607 790615 .00574075 l 790615 .485 .549 .606 180.00988960 790615 790622 .00574875
! 790622 .487 .555 .612 180.01563835 790622 790629 .00000000 790629 .489 .556 .612 190.01563835 790629 790706 .00000000 790706 .491 .557 .612 180.01563835 790706 790713 .00352478 790713 .490 .557 .615 180.01211357 790713 790720 .00501823 790720 .492 .560 .616 180.01713181 790720 790727 .00149345 790727 .493 .561 .618 180.01563835 790727 790803 .00574875 790803 .495 .561 .620 180.00989960 790803 790810 .01109123 790810 .494 .564 .620 180.02098083 790810 790817 .00384903 790817 .491 .559 .615 100.01713181 790817 790824 .00149345
, 790824 .487 .552 .408 180.01563835 790824 790831 .00574875
) 790831 .480 .546 .605 100.00988960 790831 790906 .00724220 790906 .478 .546 .602 100.01713181 790906 790914 .02702141 790914 .477 .544 .616 179.99011040 790914 790921 .00988960 790921 .477 .544 .615 180.00000000 790921 790928 .00988960 790928 .477 .344 .616 179.99011040 790928 800206 .00574875 --
900206 .467 .536 .616 179.98436165 800206 800627 .00352478 800627 .469 .338 .615 179.98788643 800627 800822 .00000000 800822 468 .536 .612 179.98788643 800822 800828 .00222397 800828 .468 .537 .612 179.99011040
- See Figure 5
- AAngle is the angle increment between Date i and Date j.
i
Midltnd P3Ent Unito 1 cnd 2 Diesel Generator Building Settlement Data Analysis 000'12090 TABLE 5 RESULT OF WARPAGE ANALYSIS (Ft)
Date i Date i .A B C D DP DIFD EDIFD*
781124 781202 . 00 .002 .013 .015 .011 .004 .004 781202 781208 .006 .001 .004 .006 .011 .005 .001 781208 781215 .001 .002 .019 .027 .018 .009 .008 781215 781222 .01t .010 .024 .004 .025 .021 .013 781222 781229 .005 .001 .008 .001 .002 .001 .014 781229 790105 .004 .005 .000 .000 .001 .001 .013-790105 790112 .003 .003 .001 .003 .001 .004 .009 790112 790119 .014 .007 .005 .004 .012 c.008 .017 790119 790126 .010 .004 .002 .010 .004 .006 .023 790126 790201 .004 .003 .001 .011 .002 .009 .014 790201 790216 .011 .022 .021 .016 .010 .006 .008 790216 790223 .002 .018 .020 .001 .004 .003 .011 790223 790302 .001 .003 .030 .023 .028 .005 .016 790302 790309 .025 .042 .023 .012 .006 .006 .010 790309 790315 .006 .022 .015 .004 .001 .005 .005 790315 790322 .002 .010 .010 .012 .002 .010 .005 790322 790330 .012 .005 .019 .031 .036 .005 .000 790330 790406 .015 .051 .041 .013 .005 .008 .008 790406 790413 .018 .039 .034 .013 .013 .000 .008 790413 790420 .000 .003 .007 .001 .004 .003 .005 790420 790426 .008 .012 .006 .006 .002 .004 .009 790426 790503 .002 .005 .000 .002 .003 .005 .004 790503 790511 .011 .015 .011 .007 .007 .000 .004 790511 790518 .003 .000 .006 .003 .003 .000 .004 790518 790525 .000 .000 .002 .003 .002 .001 .003 790525 790531 .001 .000 .000 .001 .001 .002 .005 790531 790605 .002 .003 .003 .002 .002 .000 .005 790605 790607 .004 .004 .002 .001 .002 .001 .004 790607 790615 .002 .002 .003 .003 .003 .000 .004 790615 790622 .002 .004 .006 .004 .004 .000 .004 790622 790629 .003 .000 .000 .002 .003 .001 .005 790629 790706 .001 .001 .000 .001 .000 .001 .006 790706 790713 .006 .004 .003 .001 .005 .004 '.002 790713 790720 .002 .000 .001 .001 .001 .000 .002 790720 790727 .001 .003 .002 .003 .000 .003 .005 790727 790803 .002 .00) .002 .001 .005 .004 .001 790803 790810 .000 .002 .000 .001 .002 .003 .004 790810 790817 .003 .007 .005 .001 .001 .000 .004
.004 790817 790824 .008 .008 .007 .007 .007 .000 790824 790831 .004 .005 .003 .006 .002 .004 .000 790831 790906 .004 .004 .003 .000 .003 .003 .003 790906 790914 .002 .002 .014 .017 .014 .031 .028 790914 790921 .000 .000 .001 .001 .001 .000 .028 790921 790928 .000 .000 .001 .000 .001 .001 .02?
790928 800206 .006 .006 .000 .003 .000 .003 .026 800206 800627 .001 .001 .001 .027 003 .030 .004 i 800627 800822 .001 .003 .003 .001 .001 .000 .004 800822 800828 .004 .000 .000 .001 .004 .003 .001 l
(
- EDIFD is the accumulated value of DIFD 1
l l
l l
00072090 E REF LINE 1 2 3 4" 5 se se se (a) w DATEI
_i s DATEJ
/ \ %. N N (b) ~ ,
/ /
(c)
D+2 DY3
/
D, -
Where D2 , D3 and D 4are determined from the following equations:
D 2 = [0.25(I -) 1 3
2 D 3 = [0.50(I 3) ++ 1 3 3
D4 = [0.75(I 3) + 13 4 CONSUMERS POWER COMPANY MIDLAND UNITS 1 AND 2 DERIVATION OF DIFFERENTIAL SETTLEMENT FROM SETTLEMENT DATA DIESEL GE ERATOR U LDNG SETTLEMENT DATA ANALYSIS 5/6/82 G-250841
O"^"#".3.. Osca'as 00072090 0 @ @ @
g@ @
g G @@
O g
@ GC7 D @ R R <@@ @
g b @
q@ G @ @ @@--@ SW-@
e@ @Be a ese eo*
e DATA DATE DATA DERIVATION 7/10/78 - 11/24/78 Measured settlements on scribe, then converted to the equivalent settlement on marker location 12/2178 - 3122179 Measured settlements directly from marker 3130179 - 9114179 Measured settlements from substituted marker inside the building on mezzanine floor el 663' 9/14179 - Now Measured settlements directly from marker CONSUMERS POWER COMPANY MIDLAND UNITS 1 AND 2 MEASUREMENT LOCATIONS FIGURE 2 IE L GENE T BUILDING SETTLEMENT DATA ANALYSIS 5/6/82 G-2508-10
00012090 22 21 20 3 0.000-0.100-0.200- N
{ N p \ 781124 g
g N (SCRIBE) lE 0.300- \
S 781202 O .- -s , (MARKER)
$ '%g*N,
- N N 0.400- N N g's,
\
\s s g \.
s Ns.N,
CONSUMERS POWER COMPANY MIDLAND UNITS 1 AND 2 i
ANALYSIS OF ANGLE VARIATION
. FIGURE 5 S GEN T UILDNG SETTLEMENT DATA ANALYSIS 5/6/82 G 2508-03
0 0 0 7 2. 0 9 0 !
I lj / DATEI
! -DATEj A \ ,' P,i, AC = (A + C)l2 t D DP = AC + (AC - 8)
' \ Ak j ,,
DIFD* = D - DP 03 '
he s B \ C N/
IF SURVEY IS 100% ACCURATE, I DIFD" SHOULD:
STRUCTURE UNDERGOING TWISTING (3) KEEP CONSTANT - RIGID BODY MOTION
- DIFD ls the deviation of the corner from a plane which Induces warping.
"E DIFD is the accumulated valve of DIFD.
CONSUMERS POWER COMPANY MIDLAND UNITS 1 AND 2 WARPAGE ANALYSIS FIGURE 6 SEL GE E ATOR BUILDING SETTLEMENT DATA ANALYSIS 5/6/82 G 2508-08
i.n in.
11 12 12 12 1 1 2 2 3 3 3 4 5 s e 7 7 . O 11
- 2. 2 . n . i. i n . = = = , ,.5 2, i. .s o u i.3 2.e i c. = n It t SCRIBE START READING It START READING t
READING FROas FROM MARKER l FROM SUBSTITUTEf1 l MAREER EL 834' l MARMER G MEZZANINE g g FLOOR EL 043' e u .
ii o I; i il 0 o
ll l 6h ll l ll 4 l1 ll o
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- n. -
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CONSUMERS POWER COMPANY MIDLAND UNITS 1 AND 2 MODIFIED SETTLEMENT -TIME CURVES FOR SOUTH WALL FIGURE 7a MIOLAND UNITS 1 AND 2 DESEL GENERATOR BUILDING SETTLEMENT DATA ANALYSIS 5/6/02 G-7508 o7
I 11 12 12 12 1 1 2 2 3 3 3 4 5 '6 's S S 7 7 3 8 9 9 9 10 11 24 2 8 22 G 19 1 23 9 22 30 20 3 18 31 15 29 13 27 10 24 5 14 29 27 9 ll
- I 1l I;
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i l i Ii CONSUMERS POWtR COMPANY UNITS 1 AND 2 MODIFIED SETTLEMENT -
. TIME CURVES FOR NORTH WALL uunno units i Ano 2 FIGURE 7b DIESEL GENEf1ArOf1 DUILDING SETTLEMENT DATA ANALYSIS 6/6/82
0007209g g g g g i
(> i j j 4/20179 AND 6129179 RELATIVE TO MARKER 22 I I I
I (b) '%s N l l g
3122179 RELATIVE TO N l s
MARKER 22 N 1/12179 RELATIVE TO s l MARKER 22 N l g
N THE DIFFERENCE -
FROM 1/12/79 /
TO 3/22179 l
(c) / \ g g 3/22179 RELATIVE
's i I
i I
4/20179 AND 6129179 %
TO MARKER 22 RELATIVE TO N l s
MARKER 22 N .g l N i !
s N.
THE DIFFERENCE FROM 3/22179 /"
TO 6/29179 CONSUMERS POWER COMPANY MIDLAND UNITS 1 AND 2 DIFFERENTIAL SETTLEMENT DETERMINATION FIGURE 8 G 250842 DIES L GENE TO BU LDING SETTLEMENT DATA ANALYSIS 5/6/82
- _ _ - - -_