BACKCALCULATION RESULTS MICHBACK 1.0 =============================================================== ECHO OF INPUT DATA Route : MSU 29F District : 12 Control Section : 3 Lane : 2 Job No. : 6 Description #1 : Test pavement section designated MSU 29F Description #2 : Pavement has moderate alligator cracking FWD File : MSU29F 23092 FLEXIBLE PAVEMENT Mile Posts : MP 2.5 - 2.6 AND 5.8 AND 5.9 Pavement Type : Flexible Units : English Force : lbs Length : inches Pressure : psi Temperature : øF Sensor Deflection : mils Deflection Data File : sample.fwd Convergence Criteria -------------------- Gradient Matrix Calculated After 3 Iterations Max. Iterations : 10 Modulus Tolerance : 1.00 RMS Tolerance : 1.00 *************************************************************** Test Location 1 Load : 9358.00 Load Radius : 5.91 Pressure : 85.28 Temperature : 79.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 500000. 50000. 3000000. 2 Base 11.0 .40 10000. 1000. 500000. 3 Roadbed 575.5 .45 7500. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 600.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: All moduli increments are less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 530699. 2 Base 36387. 3 Roadbed 23935. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 720.00 Total Number of Calls to Chevronx : 26 No. of Iterations : 9 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.32667 6.38141 -.87 2 8.0 1.0 5.23000 5.16678 1.21 3 12.0 1.0 4.70000 4.68053 .41 4 18.0 1.0 4.16333 4.11681 1.12 5 24.0 1.0 3.56667 3.61459 -1.34 6 36.0 1.0 2.73333 2.77413 -1.49 7 60.0 1.0 1.68000 1.66452 .92 ARS(%): 7.3636 ABS(%): 1.0519 RMS(%): 1.1028 *************************************************************** Test Location 2 Load : 9344.33 Load Radius : 5.91 Pressure : 85.16 Temperature : 79.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 530699. 50000. 3000000. 2 Base 11.0 .40 36387. 1000. 500000. 3 Roadbed 575.5 .45 23935. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 720.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 531143. 2 Base 38202. 3 Roadbed 24345. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 720.00 Total Number of Calls to Chevronx : 21 No. of Iterations : 7 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.22000 6.28488 -1.04 2 8.0 1.0 5.13000 5.07599 1.05 3 12.0 1.0 4.64000 4.59426 .99 4 18.0 1.0 4.08000 4.03804 1.03 5 24.0 1.0 3.51000 3.54389 -.97 6 36.0 1.0 2.68333 2.71889 -1.33 7 60.0 1.0 1.63667 1.63213 .28 ARS(%): 6.6779 ABS(%): .9540 RMS(%): .9993 *************************************************************** Test Location 3 Load : 9311.33 Load Radius : 5.91 Pressure : 84.86 Temperature : 78.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 531143. 50000. 3000000. 2 Base 11.0 .40 38202. 1000. 500000. 3 Roadbed 575.5 .45 24345. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 720.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 515019. 2 Base 39566. 3 Roadbed 24382. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 720.00 Total Number of Calls to Chevronx : 19 No. of Iterations : 5 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.26000 6.31370 -.86 2 8.0 1.0 5.09000 5.07601 .27 3 12.0 1.0 4.58667 4.58640 .01 4 18.0 1.0 4.02333 4.02469 -.03 5 24.0 1.0 3.49000 3.52804 -1.09 6 36.0 1.0 2.67333 2.70259 -1.09 7 60.0 1.0 1.62333 1.62093 .15 ARS(%): 3.5048 ABS(%): .5007 RMS(%): .6783 *************************************************************** Test Location 4 Load : 9312.00 Load Radius : 5.91 Pressure : 84.86 Temperature : 80.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 515019. 50000. 3000000. 2 Base 11.0 .40 39566. 1000. 500000. 3 Roadbed 575.5 .45 24382. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 720.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 478487. 2 Base 37860. 3 Roadbed 23228. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 720.00 Total Number of Calls to Chevronx : 20 No. of Iterations : 6 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.64000 6.69342 -.80 2 8.0 1.0 5.41333 5.36383 .91 3 12.0 1.0 4.86667 4.84006 .55 4 18.0 1.0 4.26000 4.24139 .44 5 24.0 1.0 3.67667 3.71370 -1.01 6 36.0 1.0 2.81000 2.83954 -1.05 7 60.0 1.0 1.70333 1.69953 .22 ARS(%): 4.9842 ABS(%): .7120 RMS(%): .7693 *************************************************************** Test Location 5 Load : 9301.00 Load Radius : 5.91 Pressure : 84.76 Temperature : 78.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 478487. 50000. 3000000. 2 Base 11.0 .40 37860. 1000. 500000. 3 Roadbed 575.5 .45 23228. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 720.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: All moduli increments are less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 491417. 2 Base 35279. 3 Roadbed 22959. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 720.00 Total Number of Calls to Chevronx : 26 No. of Iterations : 9 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.65000 6.70131 -.77 2 8.0 1.0 5.46333 5.40145 1.13 3 12.0 1.0 4.89667 4.88423 .25 4 18.0 1.0 4.33333 4.28773 1.05 5 24.0 1.0 3.71667 3.75865 -1.13 6 36.0 1.0 2.83667 2.87736 -1.43 7 60.0 1.0 1.73667 1.72166 .86 ARS(%): 6.6390 ABS(%): .9484 RMS(%): 1.0093 *************************************************************** Test Location 6 Load : 9318.67 Load Radius : 5.91 Pressure : 84.92 Temperature : 77.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 491417. 50000. 3000000. 2 Base 11.0 .40 35279. 1000. 500000. 3 Roadbed 575.5 .45 22959. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 720.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 489557. 2 Base 58374. 3 Roadbed 20557. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 720.00 Total Number of Calls to Chevronx : 20 No. of Iterations : 5 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.68333 6.68991 -.10 2 8.0 1.0 5.40333 5.40742 -.08 3 12.0 1.0 4.91333 4.91250 .02 4 18.0 1.0 4.39667 4.35822 .87 5 24.0 1.0 3.84333 3.86950 -.68 6 36.0 1.0 3.03667 3.04636 -.32 7 60.0 1.0 1.92000 1.91494 .26 ARS(%): 2.3290 ABS(%): .3327 RMS(%): .4496 *************************************************************** Test Location 7 Load : 9336.00 Load Radius : 5.91 Pressure : 85.08 Temperature : 77.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 489557. 50000. 3000000. 2 Base 11.0 .40 58374. 1000. 500000. 3 Roadbed 575.5 .45 20557. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 720.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 475042. 2 Base 54621. 3 Roadbed 20216. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 720.00 Total Number of Calls to Chevronx : 20 No. of Iterations : 5 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.89333 6.89260 .01 2 8.0 1.0 5.53667 5.56664 -.54 3 12.0 1.0 5.05667 5.05390 .05 4 18.0 1.0 4.53667 4.47849 1.28 5 24.0 1.0 3.95667 3.97116 -.37 6 36.0 1.0 3.09000 3.11811 -.91 7 60.0 1.0 1.96000 1.95140 .44 ARS(%): 3.6039 ABS(%): .5148 RMS(%): .6649 *************************************************************** Test Location 8 Load : 9257.67 Load Radius : 5.91 Pressure : 84.37 Temperature : 77.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 475042. 50000. 3000000. 2 Base 11.0 .40 54621. 1000. 500000. 3 Roadbed 575.5 .45 20216. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 720.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: All moduli increments are less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 396414. 2 Base 16861. 3 Roadbed 17899. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 667.36 Total Number of Calls to Chevronx : 20 No. of Iterations : 9 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 8.75000 8.86740 -1.34 2 8.0 1.0 7.32333 7.22603 1.33 3 12.0 1.0 6.72667 6.55392 2.57 4 18.0 1.0 5.73333 5.75108 -.31 5 24.0 1.0 4.93000 5.02608 -1.95 6 36.0 1.0 3.75000 3.80539 -1.48 7 60.0 1.0 2.23333 2.20801 1.13 ARS(%): 10.1078 ABS(%): 1.4440 RMS(%): 1.5821 *************************************************************** Test Location 9 Load : 9280.00 Load Radius : 5.91 Pressure : 84.57 Temperature : 77.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 396414. 50000. 3000000. 2 Base 11.0 .40 16861. 1000. 500000. 3 Roadbed 575.5 .45 17899. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 667.36 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: All moduli increments are less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 574503. 2 Base 6871. 3 Roadbed 17453. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 690.13 Total Number of Calls to Chevronx : 37 No. of Iterations : 17 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 8.30000 8.42004 -1.45 2 8.0 1.0 7.38000 7.23097 2.02 3 12.0 1.0 6.68333 6.69943 -.24 4 18.0 1.0 6.11333 6.01824 1.56 5 24.0 1.0 5.29667 5.36496 -1.29 6 36.0 1.0 4.14000 4.18773 -1.15 7 60.0 1.0 2.49667 2.48424 .50 ARS(%): 8.2019 ABS(%): 1.1717 RMS(%): 1.3031 *************************************************************** Test Location 10 Load : 9283.67 Load Radius : 5.91 Pressure : 84.60 Temperature : 77.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 574503. 50000. 3000000. 2 Base 11.0 .40 6871. 1000. 500000. 3 Roadbed 575.5 .45 17453. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 690.13 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: All moduli increments are less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 260972. 2 Base 112389. 3 Roadbed 9214. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 164.94 Total Number of Calls to Chevronx : 27 No. of Iterations : 9 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 9.51333 9.33566 1.87 2 8.0 1.0 7.24667 7.11463 1.82 3 12.0 1.0 6.47333 6.38462 1.37 4 18.0 1.0 5.92000 5.65644 4.45 5 24.0 1.0 5.19000 5.04426 2.81 6 36.0 1.0 4.11000 3.98140 3.13 7 60.0 1.0 2.48333 2.34430 5.60 ARS(%): 21.0479 ABS(%): 3.0068 RMS(%): 3.3280 *************************************************************** Test Location 11 Load : 9282.33 Load Radius : 5.91 Pressure : 84.59 Temperature : 79.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 260972. 50000. 3000000. 2 Base 11.0 .40 112389. 1000. 500000. 3 Roadbed 575.5 .45 9214. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 164.94 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 911566. 2 Base 10203. 3 Roadbed 15702. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 467.21 Total Number of Calls to Chevronx : 20 No. of Iterations : 6 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.82000 6.81024 .14 2 8.0 1.0 6.01000 6.03838 -.47 3 12.0 1.0 5.66333 5.69347 -.53 4 18.0 1.0 5.28000 5.22246 1.09 5 24.0 1.0 4.75333 4.75799 -.10 6 36.0 1.0 3.86667 3.88070 -.36 7 60.0 1.0 2.50000 2.48391 .64 ARS(%): 3.3418 ABS(%): .4774 RMS(%): .5694 *************************************************************** Test Location 12 Load : 9282.67 Load Radius : 5.91 Pressure : 84.60 Temperature : 81.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 911566. 50000. 3000000. 2 Base 11.0 .40 10203. 1000. 500000. 3 Roadbed 575.5 .45 15702. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 467.21 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 924551. 2 Base 35925. 3 Roadbed 8887. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 154.59 Total Number of Calls to Chevronx : 54 No. of Iterations : 13 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.65000 6.63237 .27 2 8.0 1.0 5.89667 5.89103 .10 3 12.0 1.0 5.55333 5.55505 -.03 4 18.0 1.0 5.14667 5.10302 .85 5 24.0 1.0 4.65333 4.65291 .01 6 36.0 1.0 3.79333 3.78182 .30 7 60.0 1.0 2.31667 2.30590 .46 ARS(%): 2.0168 ABS(%): .2881 RMS(%): .3978 *************************************************************** Test Location 13 Load : 9272.67 Load Radius : 5.91 Pressure : 84.50 Temperature : 81.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 924551. 50000. 3000000. 2 Base 11.0 .40 35925. 1000. 500000. 3 Roadbed 575.5 .45 8887. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 154.59 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: All moduli increments are less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 476480. 2 Base 140577. 3 Roadbed 10947. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 234.55 Total Number of Calls to Chevronx : 34 No. of Iterations : 8 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 7.09667 7.14036 -.62 2 8.0 1.0 5.74000 5.87868 -2.42 3 12.0 1.0 5.37667 5.43065 -1.00 4 18.0 1.0 4.92333 4.94160 -.37 5 24.0 1.0 4.45000 4.50690 -1.28 6 36.0 1.0 3.63000 3.72169 -2.53 7 60.0 1.0 2.38667 2.44542 -2.46 ARS(%): 10.6730 ABS(%): 1.5247 RMS(%): 1.7500 *************************************************************** Test Location 14 Load : 9262.67 Load Radius : 5.91 Pressure : 84.41 Temperature : 81.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 476480. 50000. 3000000. 2 Base 11.0 .40 140577. 1000. 500000. 3 Roadbed 575.5 .45 10947. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 234.55 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: All moduli increments are less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 253105. 2 Base 79451. 3 Roadbed 17832. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 720.00 Total Number of Calls to Chevronx : 30 No. of Iterations : 8 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 8.75667 8.83144 -.85 2 8.0 1.0 6.71333 6.52948 2.74 3 12.0 1.0 5.71000 5.76169 -.91 4 18.0 1.0 5.00000 5.01596 -.32 5 24.0 1.0 4.37667 4.41435 -.86 6 36.0 1.0 3.43333 3.45397 -.60 7 60.0 1.0 2.19333 2.17685 .75 ARS(%): 7.0307 ABS(%): 1.0044 RMS(%): 1.2432 *************************************************************** Test Location 15 Load : 9252.67 Load Radius : 5.91 Pressure : 84.32 Temperature : 81.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 253105. 50000. 3000000. 2 Base 11.0 .40 79451. 1000. 500000. 3 Roadbed 575.5 .45 17832. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 720.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 600560. 2 Base 57285. 3 Roadbed 18487. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 720.00 Total Number of Calls to Chevronx : 10 No. of Iterations : 2 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.51000 6.49892 .17 2 8.0 1.0 5.48000 5.43899 .75 3 12.0 1.0 5.05333 5.01062 .85 4 18.0 1.0 4.60000 4.51323 1.89 5 24.0 1.0 4.06333 4.05964 .09 6 36.0 1.0 3.27000 3.26759 .07 7 60.0 1.0 2.10333 2.11753 -.68 ARS(%): 4.4898 ABS(%): .6414 RMS(%): .8727 *************************************************************** Test Location 16 Load : 9261.33 Load Radius : 5.91 Pressure : 84.40 Temperature : 85.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 600560. 50000. 3000000. 2 Base 11.0 .40 57285. 1000. 500000. 3 Roadbed 575.5 .45 18487. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 720.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 768585. 2 Base 44401. 3 Roadbed 19651. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 720.00 Total Number of Calls to Chevronx : 19 No. of Iterations : 4 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 5.88000 5.89867 -.32 2 8.0 1.0 5.05000 5.04659 .07 3 12.0 1.0 4.69667 4.68387 .27 4 18.0 1.0 4.27333 4.24522 .66 5 24.0 1.0 3.80333 3.83401 -.81 6 36.0 1.0 3.08667 3.09972 -.42 7 60.0 1.0 2.01667 2.01058 .30 ARS(%): 2.8465 ABS(%): .4066 RMS(%): .4679 *************************************************************** Test Location 17 Load : 9243.00 Load Radius : 5.91 Pressure : 84.23 Temperature : 85.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 768585. 50000. 3000000. 2 Base 11.0 .40 44401. 1000. 500000. 3 Roadbed 575.5 .45 19651. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 720.00 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 724434. 2 Base 25057. 3 Roadbed 16602. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 717.80 Total Number of Calls to Chevronx : 16 No. of Iterations : 4 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.90000 6.91982 -.29 2 8.0 1.0 5.95667 5.99824 -.70 3 12.0 1.0 5.56333 5.59136 -.50 4 18.0 1.0 5.12000 5.08506 .68 5 24.0 1.0 4.54333 4.60138 -1.28 6 36.0 1.0 3.69333 3.72408 -.83 7 60.0 1.0 2.38333 2.40441 -.88 ARS(%): 5.1658 ABS(%): .7380 RMS(%): .7925 *************************************************************** Test Location 18 Load : 9255.00 Load Radius : 5.91 Pressure : 84.34 Temperature : 85.00 Layer Layer Poisson's Seed Min. Max. No. Name Thickness Ratio Modulus Modulus Modulus ------------------------------------------------------------------- 1 AC 13.5 .35 724434. 50000. 3000000. 2 Base 11.0 .40 25057. 1000. 500000. 3 Roadbed 575.5 .45 16602. 500. 100000. 4 Stf. Layer semi-inf. .20 1000000. 3000. 100000. Stiff Layer Depth (initial value) : 717.80 Depth Varied or Fixed : Varied BACKCALCULATED RESULTS Status of Convergence: RMS error of deflections is less than 1.00 % Layer No. Layer Name Modulus ----------------------------------- 1 AC 807949. 2 Base 19440. 3 Roadbed 16536. 4 Stf. Layer 1000000. Estimated Stiff Layer Depth : 540.31 Total Number of Calls to Chevronx : 9 No. of Iterations : 2 Deflections Sensor No. Offset Weight Measured Calculated % Difference --------------------------------------------------------------- 1 .0 1.0 6.69000 6.68245 .11 2 8.0 1.0 5.82667 5.83076 -.07 3 12.0 1.0 5.47000 5.46182 .15 4 18.0 1.0 5.01667 4.97903 .75 5 24.0 1.0 4.48667 4.51266 -.58 6 36.0 1.0 3.66000 3.65436 .15 7 60.0 1.0 2.34000 2.33715 .12 ARS(%): 1.9380 ABS(%): .2769 RMS(%): .3736 *************************************************************** STATISTICAL INFORMATION Layer Average Standard Maximum Minimum Name Modulus Deviation Modulus Modulus AC 567249. 187678. 924551. 253105. Base 47153. 33406. 140577. 6871. Roadbed 18268. 4720. 24382. 8887. Stiff Layer Depth (inches): Average Std. Dev. Maximum Minimum 602. 199. 720. 155.