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This report is an archived publication and may contain dated technical, contact, and link information
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Publication Number:  FHWA-HRT-15-036    Date:  December 2015
Publication Number: FHWA-HRT-15-036
Date: December 2015

 

Long-Term Pavement Performance Program Determination of In-Place Elastic Layer Modulus: Backcalculation Methodology and Procedures

Appendix C: Development of the Simulated Layer Structure for the Backcalculation Process Using Evercalc© and Modcomp©

This appendix includes the tables used for developing the simulated pavement structure for the first segment analysis using EVERCALC©. Chapter 4 provided the rules of simulation used to create or combine different layers in the pavement structure for the initial two phases of analysis, while this appendix presents the layering information. The appendix is divided into two parts: the first part shows results for the simulated structure with a bedrock or apparent rigid layer (table 21 to table 29), and the second part shows the results for the condition or simulation without a bedrock layer (table 30 to table 42). Each section includes a series of generic tables for specific layer combination.

BACKCALCULATION STRUCTURE FOR CASES USING BEDROCK IN THE BACKCALCULATION STRUCTURE

Table 21. AC surface with two layers between AC and subgrade.
LAYER_
AFTER_
AC_1
LAYER_
AFTER_
AC_2
SS_TYPE BC_LAYER_
2_
DESIG
BC_LAYER_
3_
DESIG
BC_LAYER_
SS_
DESIG
BEDROCK_
LAYER_NO
GB_COARSE GS_COARSE SS_COARSE 2 2 3 4
GB_COARSE GS_FINE SS_COARSE 2 2 3 4
GB_COARSE GS_SAND SS_COARSE 2 2 3 4
GB_COARSE GS_TYP SS_COARSE 2 2 3 4
GB_COARSE TS_LIME SS_COARSE 2 3 4 5
GB_COARSE TS_STAB SS_COARSE 2 3 4 5
GB_FINE GS_SAND SS_COARSE 2 2 3 4
GB_SAND GS_SAND SS_COARSE 2 2 3 4
GB_TYP GS_COARSE SS_COARSE 2 2 3 4
GB_TYP GS_FINE SS_COARSE 2 2 3 4
GB_TYP GS_SAND SS_COARSE 2 2 3 4
GB_TYP GS_TYP SS_COARSE 2 2 3 4
GB_TYP TB_AC SS_COARSE 2 3 4 5
GB_TYP TS_AC SS_COARSE 2 3 4 5
GB_TYP TS_LIME SS_COARSE 2 3 4 5
GB_TYP TS_STAB SS_COARSE 2 3 4 5
PC GB_COARSE SS_COARSE 2 3 4 5
PC GB_SAND SS_COARSE 2 3 4 5
PC GB_TYP SS_COARSE 2 3 4 5
PC TB_AC SS_COARSE 2 3 4 5
PC TB_LCB SS_COARSE 2 3 4 5
PC TB_STAB SS_COARSE 2 3 4 5
PC_RUBBLIZED GB_TYP SS_COARSE 2 3 4 5
PCC_CRACKED GB_COARSE SS_COARSE 2 3 4 5
PCC_CRACKED GB_TYP SS_COARSE 2 3 4 5
PCC_CRACKED GS_COARSE SS_COARSE 2 3 4 5
PCC_CRACKED TB_STAB SS_COARSE 2 3 4 5
TB_AC GB_TYP SS_COARSE 2 3 4 5
TB_AC GS_COARSE SS_COARSE 2 3 4 5
TB_AC GS_FINE SS_COARSE 2 3 4 5
TB_AC GS_SAND SS_COARSE 2 3 4 5
TB_AC GS_TYP SS_COARSE 2 3 4 5
TB_AC TB_AC SS_COARSE 2 2 3 4
TB_AC TS_LIME SS_COARSE 2 3 4 5
TB_AC TS_STAB SS_COARSE 2 3 4 5
TB_LCB GS_COARSE SS_COARSE 2 3 4 5
TB_LCB GS_TYP SS_COARSE 2 3 4 5
TB_STAB GS_COARSE SS_COARSE 2 3 4 5
TB_STAB GS_FINE SS_COARSE 2 3 4 5
TB_STAB GS_TYP SS_COARSE 2 3 4 5
TB_STAB TS_LIME SS_COARSE 2 3 4 5
GB_COARSE GS_COARSE SS_FINE 2 2 3 4
GB_COARSE GS_FINE SS_FINE 2 2 3 4
GB_COARSE TS_LIME SS_FINE 2 3 4 5
GB_COARSE TS_STAB SS_FINE 2 3 4 5
GB_FINE TS_LIME SS_FINE 2 3 4 5
GB_SAND GS_SAND SS_FINE 2 2 3 4
GB_TYP GS_COARSE SS_FINE 2 2 3 4
GB_TYP GS_FINE SS_FINE 2 2 3 4
GB_TYP GS_LIME SS_FINE 2 2 3 4
GB_TYP GS_SAND SS_FINE 2 2 3 4
GB_TYP GS_TYP SS_FINE 2 2 3 4
GB_TYP TS_LIME SS_FINE 2 3 4 5
GB_TYP TS_STAB SS_FINE 2 3 4 5
PC GB_FINE SS_FINE 2 3 4 5
PC GB_SAND SS_FINE 2 3 4 5
PC GB_TYP SS_FINE 2 3 4 5
PC TB_AC SS_FINE 2 3 4 5
PC TB_CEMENT SS_FINE 2 3 4 5
PC TB_LCB SS_FINE 2 3 4 5
PC TB_LIME SS_FINE 2 3 4 5
PC TB_STAB SS_FINE 2 3 4 5
PC_RUBBLIZED GB_TYP SS_FINE 2 3 4 5
PCC_CRACKED GB_FINE SS_FINE 2 3 4 5
PCC_CRACKED GB_TYP SS_FINE 2 3 4 5
PCC_CRACKED TB_AC SS_FINE 2 3 4 5
PCC_CRACKED TB_CEMENT SS_FINE 2 3 4 5
PCC_CRACKED TB_STAB SS_FINE 2 3 4 5
TB_AC GB_TYP SS_FINE 2 3 4 5
TB_AC GS_COARSE SS_FINE 2 3 4 5
TB_AC GS_FINE SS_FINE 2 3 4 5
TB_AC GS_TYP SS_FINE 2 3 4 5
TB_AC TB_AC SS_FINE 2 2 3 4
TB_AC TS_LIME SS_FINE 2 3 4 5
TB_AC TS_STAB SS_FINE 2 3 4 5
TB_CEMENT TS_LIME SS_FINE 2 3 4 5
TB_LCB GS_COARSE SS_FINE 2 3 4 5
TB_LCB GS_FINE SS_FINE 2 3 4 5
TB_LCB GS_TYP SS_FINE 2 3 4 5
TB_STAB GS_COARSE SS_FINE 2 3 4 5
TB_STAB GS_FINE SS_FINE 2 3 4 5
TB_STAB GS_TYP SS_FINE 2 3 4 5
TB_STAB TS_LIME SS_FINE 2 3 4 5

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 22. PCC surface with two layers between PCC and subgrade.
LAYER_
AFTER_PC_1
LAYER_
AFTER_PC_2
SS_TYPE BC_LAYER_
2_DESIG
BC_LAYER_
3_DESIG
BC_LAYER_
SS_DESIG
BEDROCK_
LAYER_NO
AC TB_CEMENT SS_COARSE 2 3 4 5
AC TB_STAB SS_COARSE 2 3 4 5
GB_COARSE GS_COARSE SS_COARSE 2 2 3 4
GB_COARSE GS_FINE SS_COARSE 2 3 4 5
GB_COARSE GS_SAND SS_COARSE 2 3 4 5
GB_TYP GS_COARSE SS_COARSE 2 3 4 5
GB_TYP GS_FINE SS_COARSE 2 3 4 5
GB_TYP GS_SAND SS_COARSE 2 3 4 5
GB_TYP GS_TYP SS_COARSE 2 2 3 4
TB_AC GB_COARSE SS_COARSE 2 3 4 5
TB_AC GB_TYP SS_COARSE 2 3 4 5
TB_AC GS_COARSE SS_COARSE 2 3 4 5
TB_AC GS_FINE SS_COARSE 2 3 4 5
TB_AC GS_SAND SS_COARSE 2 3 4 5
TB_AC GS_TYP SS_COARSE 2 3 4 5
TB_AC TS_AC SS_COARSE 2 2 3 4
TB_AC TS_LIME SS_COARSE 2 3 4 5
TB_AC TS_STAB SS_COARSE 2 3 4 5
TB_CEMENT GS_FINE SS_COARSE 2 3 4 5
TB_LCB GB_TYP SS_COARSE 2 3 4 5
TB_LCB GS_COARSE SS_COARSE 2 3 4 5
TB_LCB GS_TYP SS_COARSE 2 3 4 5
TB_STAB GS_COARSE SS_COARSE 2 3 4 5
TB_STAB GS_FINE SS_COARSE 2 3 4 5
TB_STAB GS_SAND SS_COARSE 2 3 4 5
TB_STAB GS_TYP SS_COARSE 2 3 4 5
AC PC SS_FINE 2 3 4 5
AC TB_STAB SS_FINE 2 3 4 5
GB_COARSE GS_COARSE SS_FINE 2 2 3 4
GB_FINE GS_COARSE SS_FINE 2 2 3 4
GB_FINE GS_SAND SS_FINE 2 3 4 5
GB_TYP GS_COARSE SS_FINE 2 2 3 4
GB_TYP GS_FINE SS_FINE 2 3 4 5
GB_TYP GS_SAND SS_FINE 2 3 4 5
GB_TYP GS_TYP SS_FINE 2 2 3 4
GB_TYP TS_LIME SS_FINE 2 3 4 5
GB_TYP TS_STAB SS_FINE 2 3 4 5
TB_AC GB_TYP SS_FINE 2 3 4 5
TB_AC GS_COARSE SS_FINE 2 3 4 5
TB_AC GS_FINE SS_FINE 2 3 4 5
TB_AC GS_TYP SS_FINE 2 3 4 5
TB_AC TS_LIME SS_FINE 2 3 4 5
TB_CEMENT GS_FINE SS_FINE 2 3 4 5
TB_CEMENT TS_LIME SS_FINE 2 3 4 5
TB_LCB GS_COARSE SS_FINE 2 3 4 5
TB_LCB GS_FINE SS_FINE 2 3 4 5
TB_LCB GS_SAND SS_FINE 2 3 4 5
TB_LCB TS_LIME SS_FINE 2 3 4 5
TB_LCB TS_STAB SS_FINE 2 3 4 5
TB_STAB GB_TYP SS_FINE 2 3 4 5
TB_STAB GS_COARSE SS_FINE 2 3 4 5
TB_STAB GS_FINE SS_FINE 2 3 4 5
TB_STAB TS_LIME SS_FINE 2 3 4 5
TB_STAB TS_STAB SS_FINE 2 3 4 5

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 23. AC surface with three layers between AC and subgrade.
LAYER_
AFTER_
AC_1
LAYER_
AFTER_
AC_2
LAYER_
AFTER_
AC_3
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
SS_DESIG
BEDROCK_
LAYER_
NO
GB_COARSE GS_COARSE TS_AC SS_COARSE 2 2 3 4 5
GB_COARSE GS_SAND TS_AC SS_COARSE 2 2 3 4 5
GB_TYP AC GS_TYP SS_COARSE 2 2 2 3 4
GB_TYP GB_TYP TS_LIME SS_COARSE 2 2 3 4 5
GB_TYP GS_COARSE GS_COARSE SS_COARSE 2 3 3 4 5
GB_TYP GS_COARSE TS_LIME SS_COARSE 2 2 3 4 5
GB_TYP GS_TYP GS_COARSE SS_COARSE 2 2 3 4 5
GB_TYP GS_TYP GS_SAND SS_COARSE 2 2 3 4 5
GB_TYP GS_TYP GS_TYP SS_COARSE 2 2 3 4 5
PC GB_TYP GS_COARSE SS_COARSE 2 3 3 4 5
PC GB_TYP GS_FINE SS_COARSE 2 3 3 4 5
PC GB_TYP GS_SAND SS_COARSE 2 3 3 4 5
PC GB_TYP GS_TYP SS_COARSE 2 3 3 4 5
PC TB_AC GS_COARSE SS_COARSE 2 3 3 4 5
PC TB_AC GS_FINE SS_COARSE 2 3 3 4 5
PC TB_AC GS_TYP SS_COARSE 2 3 3 4 5
PC TB_AC TS_LIME SS_COARSE 2 3 3 4 5
PC TB_LCB GS_TYP SS_COARSE 2 2 3 4 5
PC TB_STAB GS_COARSE SS_COARSE 2 3 3 4 5
PC TB_STAB GS_SAND SS_COARSE 2 3 3 4 5
PC TB_STAB GS_TYP SS_COARSE 2 3 3 4 5
PC_RUBBLIZED TB_STAB GS_TYP SS_COARSE 2 2 3 4 5
PCC_CRACKED TB_STAB GS_COARSE SS_COARSE 2 2 3 4 5
PCC_CRACKED TB_STAB GS_TYP SS_COARSE 2 2 3 4 5
TB_AC GB_TYP GS_COARSE SS_COARSE 2 3 3 4 5
TB_AC GB_TYP GS_FINE SS_COARSE 2 3 3 4 5
TB_AC GB_TYP GS_TYP SS_COARSE 2 3 3 4 5
TB_AC GB_TYP TS_LIME SS_COARSE 2 3 3 4 5
TB_AC GB_TYP TS_STAB SS_COARSE 2 3 3 4 5
TB_AC GS_COARSE GS_COARSE SS_COARSE 2 3 3 4 5
TB_AC GS_COARSE GS_SAND SS_COARSE 2 3 3 4 5
TB_AC GS_COARSE TS_LIME SS_COARSE 2 3 3 4 5
TB_AC GS_TYP GS_COARSE SS_COARSE 2 3 3 4 5
TB_AC GS_TYP GS_TYP SS_COARSE 2 3 3 4 5
TB_AC GS_TYP TS_STAB SS_COARSE 2 3 3 4 5
TB_AC TB_AC GS_COARSE SS_COARSE 2 2 3 4 5
TB_AC TB_AC GS_TYP SS_COARSE 2 2 3 4 5
TB_AC TB_AC TS_LIME SS_COARSE 2 2 3 4 5
TB_AC TB_AC TS_STAB SS_COARSE 2 2 3 4 5
TB_AC TB_STAB GS_COARSE SS_COARSE 2 3 3 4 5
TB_AC TS_AC GS_COARSE SS_COARSE 2 2 3 4 5
TB_STAB GS_FINE GS_COARSE SS_COARSE 2 3 3 4 5
GB_SAND GS_TYP GS_TYP SS_FINE 2 3 3 4 5
GB_TYP GS_COARSE GS_FINE SS_FINE 2 2 3 4 5
GB_TYP GS_COARSE TS_STAB SS_FINE 2 2 3 4 5
GB_TYP GS_SAND GS_FINE SS_FINE 2 3 3 4 5
GB_TYP GS_TYP GS_TYP SS_FINE 2 2 3 4 5

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 24. PCC surface with three layers between PCC and subgrade.
LAYER_
AFTER_
PC_1
LAYER_
AFTER_
PC_2
LAYER_
AFTER_
PC_3
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
SS_DESIG
BEDROCK_
LAYER_NO
AC AC GB_TYP SS_COARSE 2 2 3 4 5
AC AC PC SS_COARSE 2 2 3 4 5
AC PC GB_TYP SS_COARSE 2 2 3 4 5
AC TB_STAB GS_COARSE SS_COARSE 2 2 3 4 5
GB_TYP GB_TYP GS_COARSE SS_COARSE 2 2 3 4 5
GB_TYP GS_COARSE GS_COARSE SS_COARSE 2 3 3 4 5
GB_TYP GS_COARSE GS_FINE SS_COARSE 2 2 3 4 5
GB_TYP GS_COARSE TS_LIME SS_COARSE 2 2 3 4 5
GB_TYP GS_FINE GS_FINE SS_COARSE 2 3 3 4 5
TB_AC GB_TYP GS_COARSE SS_COARSE 2 3 3 4 5
TB_AC GS_COARSE GS_COARSE SS_COARSE 2 3 3 4 5
TB_AC GS_COARSE TS_LIME SS_COARSE 2 3 3 4 5
TB_AC GS_TYP GS_TYP SS_COARSE 2 3 3 4 5
TB_AC TS_STAB GS_COARSE SS_COARSE 2 3 3 4 5
TB_CEMENT GS_FINE TS_LIME SS_COARSE 2 3 3 4 5
TB_LCB GB_TYP GS_COARSE SS_COARSE 2 3 3 4 5
TB_LCB GS_COARSE TS_LIME SS_COARSE 2 3 3 4 5
TB_LCB GS_TYP GS_COARSE SS_COARSE 2 3 3 4 5
TB_STAB GB_TYP GS_COARSE SS_COARSE 2 3 3 4 5
TB_STAB GS_FINE TS_LIME SS_COARSE 2 3 3 4 5
TB_STAB GS_TYP GS_COARSE SS_COARSE 2 3 3 4 5
TB_STAB GS_TYP GS_FINE SS_COARSE 2 3 3 4 5
TB_STAB GS_TYP GS_TYP SS_COARSE 2 3 3 4 5
TB_STAB TS_STAB GS_COARSE SS_COARSE 2 2 3 4 5
AC AC PC SS_FINE 2 2 3 4 5
AC PC GB_FINE SS_FINE 2 2 3 4 5
AC PC GB_SAND SS_FINE 2 2 3 4 5
AC PC GB_TYP SS_FINE 2 2 3 4 5
AC PC TB_CEMENT SS_FINE 2 2 3 4 5
AC PC TB_STAB SS_FINE 2 2 3 4 5
AC TB_STAB TS_LIME SS_FINE 2 3 3 4 5
GB_TYP GS_COARSE TS_LIME SS_FINE 2 3 3 4 5
GB_TYP GS_FINE GS_TYP SS_FINE 2 3 3 4 5
TB_AC AC GS_COARSE SS_FINE 2 2 3 4 5
TB_AC AC GS_SAND SS_FINE 2 2 3 4 5
TB_AC AC TS_LIME SS_FINE 2 2 3 4 5
TB_AC GB_TYP GS_FINE SS_FINE 2 3 3 4 5
TB_AC GB_TYP TS_LIME SS_FINE 2 3 3 4 5
TB_AC GB_TYP TS_STAB SS_FINE 2 3 3 4 5
TB_AC TS_AC TS_LIME SS_FINE 2 2 3 4 5
TB_AC TS_LIME GS_FINE SS_FINE 2 2 3 4 5
TB_CEMENT GS_SAND TS_LIME SS_FINE 2 3 3 4 5
TB_LCB GS_COARSE TS_LIME SS_FINE 2 3 3 4 5
TB_LCB GS_FINE GS_TYP SS_FINE 2 3 3 4 5
TB_STAB GS_COARSE TS_LIME SS_FINE 2 3 3 4 5
TB_STAB GS_TYP GS_COARSE SS_FINE 2 3 3 4 5
TB_STAB GS_TYP GS_FINE SS_FINE 2 3 3 4 5
TB_STAB TS_STAB GS_COARSE SS_FINE 2 3 3 4 5

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 25. AC surface with four layers between AC and subgrade.
LAYER_
AFTER_
AC_1
LAYER_
AFTER_
AC_2
LAYER_
AFTER_
AC_3
LAYER_
AFTER_
AC_4
SS_TYPE BC_ LAYER_
2_DESIG
BC_ LAYER_
3_DESIG
BC_ LAYER_
4_DESIG
BC_ LAYER_
5_DESIG
BC_ LAYER_
SS_DESIG
BEDROCK_
LAYER_
NO
PC AC PC GB_TYP SS_COARSE 2 2 2 3 4 5
PC GB_TYP GS_FINE GS_FINE SS_COARSE 2 3 3 3 4 5
PC TB_AC TS_STAB GS_COARSE SS_COARSE 2 3 3 3 4 5
PC TB_CEMENT GS_FINE TS_LIME SS_COARSE 2 3 3 3 4 5
PC TB_STAB GS_FINE TS_LIME SS_COARSE 2 3 3 3 4 5
PC TB_STAB TS_STAB GS_COARSE SS_COARSE 2 3 3 3 4 5
PCC_
CRACKED
TB_STAB GS_TYP GS_FINE SS_COARSE 2 3 3 3 4 5
TB_AC GB_TYP GB_TYP GS_COARSE SS_COARSE 2 3 3 3 4 5
TB_AC GB_TYP GS_COARSE TS_LIME SS_COARSE 2 3 3 3 4 5
TB_AC GB_TYP TS_STAB GS_COARSE SS_COARSE 2 3 3 3 4 5
TB_AC GS_TYP GS_COARSE GS_COARSE SS_COARSE 2 3 3 3 4 5
TB_AC TB_AC GB_TYP GS_COARSE SS_COARSE 2 2 3 3 4 5
TB_AC TB_AC GS_COARSE TS_LIME SS_COARSE 2 2 3 3 4 5
GB_TYP TS_AC GS_TYP GS_TYP SS_FINE 2 2 3 3 4 5
PC TB_CEMENT GS_COARSE TS_LIME SS_FINE 2 2 3 3 4 5
PC TB_CEMENT GS_SAND TS_LIME SS_FINE 2 3 3 3 4 5
PC TB_STAB GS_COARSE TS_LIME SS_FINE 2 3 3 3 4 5
PC TB_STAB GS_TYP GS_COARSE SS_FINE 2 3 3 3 4 5
PC TB_STAB TS_STAB GS_COARSE SS_FINE 2 3 3 3 4 5
PCC_
CRACKED
TB_STAB GS_TYP GS_FINE SS_FINE 2 3 3 3 4 5
TB_AC GB_TYP TS_STAB GS_COARSE SS_FINE 2 3 3 3 4 5
TB_AC GB_TYP TS_STAB GS_FINE SS_FINE 2 3 3 3 4 5
TB_AC TB_AC GB_TYP TS_STAB SS_FINE 2 2 3 3 4 5
TB_AC TB_AC TS_STAB GS_FINE SS_FINE 2 2 3 3 4 5
TB_AC TS_AC GS_TYP GS_FINE SS_FINE 2 2 3 3 4 5
TB_LCB TB_STAB TS_STAB TS_STAB SS_FINE 2 3 3 3 4 5

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 26. PCC surface with four layers between PCC and subgrade.
LAYER_
AFTER_
PC_1
LAYER_
AFTER_
PC_2
LAYER_
AFTER_
PC_3
LAYER_
AFTER_
PC_4
SS_TYPE BC_ LAYER_
2_DESIG
BC_ LAYER_
3_DESIG
BC_ LAYER_
4_DESIG
BC_ LAYER_
5_DESIG
BC_ LAYER_
SS_DESIG
BEDROCK_
LAYER_
NO
AC AC PC GB_TYP SS_COARSE 2 2 2 3 4 5
AC PC GB_TYP GS_COARSE SS_COARSE 2 2 3 3 4 5
AC PC GB_TYP GS_SAND SS_COARSE 2 2 3 3 4 5
AC PC TB_STAB GS_COARSE SS_COARSE 2 2 3 3 4 5
AC PCC_
CRACKED
TB_STAB GS_TYP SS_COARSE 2 2 2 3 4 5
GB_
COARSE
GS_COARSE GS_FINE GS_FINE SS_COARSE 2 2 3 3 4 5
TB_AC GB_TYP GB_TYP GS_COARSE SS_COARSE 2 3 3 3 4 5
TB_LCB GS_COARSE GS_COARSE GS_TYP SS_COARSE 2 3 3 3 4 5
AC AC PC GB_TYP SS_FINE 2 2 2 3 4 5
AC PC GB_COARSE TS_LIME SS_FINE 2 2 3 3 4 5
AC PC GB_TYP GS_COARSE SS_FINE 2 2 3 3 4 5
AC PC GB_TYP GS_SAND SS_FINE 2 2 3 3 4 5
TB_AC GB_TYP GS_COARSE TS_LIME SS_FINE 2 3 3 3 4 5
TB_AC GB_TYP GS_FINE GS_TYP SS_FINE 2 3 3 3 4 5

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 27. AC surface with five layers between AC and subgrade.
LAYER_
AFTER_
AC_1
LAYER_
AFTER_
AC_2
LAYER_
AFTER_
AC_3
LAYER_
AFTER_
AC_4
LAYER_
AFTER_
AC_5
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
5_DESIG
BC_
LAYER_
6_DESIG
BC_
LAYER_
SS_DESIG
BEDROCK_
LAYER_
NO
PC GB_COARSE GS_COARSE GS_FINE GS_FINE SS_COARSE 2 3 3 3 3 4 5
TB_AC AC AC AC TS_STAB SS_COARSE 1 1 1 1 2 3 4
GB_TYP TS_AC GS_TYP GS_TYP GS_TYP SS_FINE 2 2 3 3 3 4 5

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 28. PCC surface with six layers between PCC and subgrade.
LAYER_
AFTER_
PC_1
LAYER_
AFTER_
PC_2
LAYER_
AFTER_
PC_3
LAYER_
AFTER_
PC_4
LAYER_
AFTER_
PC_5
LAYER_
AFTER_
PC_6
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
5_DESIG
BC_
LAYER_
6_DESIG
BC_
LAYER_
7_DESIG
BC_
LAYER_
SS_DESIG
BC_
LAYER_
NO
AC AC AC PC GB_COARSE GS_TYP SS_FINE 2 2 2 2 3 3 4 5

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 29. AC surface with seven layers between AC and subgrade.
LAYER_
AFTER_
AC_1
LAYER_
AFTER_
AC_2
LAYER_
AFTER_
AC_3
LAYER_
AFTER_
AC_4
LAYER_
AFTER_
AC_5
LAYER_
AFTER_
AC_6
LAYER_
AFTER_
AC_7
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
5_DESIG
BC_
LAYER_
6_DESIG
BC_
LAYER_
7_DESIG
BC_
LAYER_
8_DESIG
BC_
LAYER_
SS_DESIG
BEDROCK_
LAYER_
NO
GB_TYP GS_TYP GS_TYP TS_AC GS_TYP GS_TYP GS_TYP SS_FINE 2 3 3 3 3 3 3 4 5

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 30. PCC surface with seven layers between PCC and subgrade.
LAYER_
AFTER_
PC_1
LAYER_
AFTER_
PC_2
LAYER_
AFTER_
PC_3
LAYER_
AFTER_
PC_4
LAYER_
AFTER_
PC_5
LAYER_
AFTER_
PC_6
LAYER_
AFTER_
PC_7
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
5_DESIG
BC_
LAYER_
6_DESIG
BC_
LAYER_
7_DESIG
BC_
LAYER_
8_DESIG
BC_
LAYER_
SS_DESIG
BEDROCK_
LAYER_
NO
AC AC AC AC PC TB_CEMENT TS_LIME SS_FINE 2 2 2 2 2 3 3 4 5
AC AC AC AC PC TB_STAB TS_LIME SS_FINE 2 2 2 2 2 3 3 4 5

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

BACKCALCULATION STRUCTURE FOR CASES WITHOUT BEDROCK IN THE BACKCALCULATION STRUCTURE

Table 31. AC surface with one layer between AC and subgrade.
LAYER_
AFTER_
AC_1
SS_TYPE BC_LAYER_
2_
DESIG
BC_LAYER_
SS_
DESIG
BC_
LAYER_
NO
SS_
sub_
24
GB_COARSE SS_COARSE 2 2 3 1
GB_FINE SS_COARSE 2 3 4 0
GB_SAND SS_COARSE 2 3 4 0
GB_TYP SS_COARSE 2 3 4 0
GS_COARSE SS_COARSE 2 2 3 1
PC SS_COARSE 2 3 4 0
TB_AC SS_COARSE 2 3 4 0
TB_CEMENT SS_COARSE 2 3 4 0
TB_STAB SS_COARSE 2 3 4 0
GB_COARSE SS_FINE 2 3 4 0
GB_FINE SS_FINE 2 2 3 1
GB_SAND SS_FINE 2 3 4 0
GB_TYP SS_FINE 2 3 4 0
PC SS_FINE 2 3 4 0
TB_AC SS_FINE 2 3 4 0
TB_CEMENT SS_FINE 2 3 4 0
TB_LCB SS_FINE 2 3 4 0
TB_LIME SS_FINE 2 3 4 0
TB_STAB SS_FINE 2 3 4 0
TS_AC SS_FINE 2 3 4 0
TS_LIME SS_FINE 2 3 4 0
TS_STAB SS_FINE 2 3 4 0

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 32. PCC surface with one layer between PCC and subgrade.
LAYER_
AFTER_
PC_1
SS_TYPE BC_LAYER_
2_
DESIG
BC_LAYER_
SS_
DESIG
BC_
LAYER_
NO
SS_
sub_
24
GB_COARSE SS_COARSE 2 2 3 1
GB_FINE SS_COARSE 2 3 4 0
GB_SAND SS_COARSE 2 3 4 0
GB_TYP SS_COARSE 2 3 4 0
GS_COARSE SS_COARSE 2 2 3 1
TB_AC SS_COARSE 2 3 4 0
TB_CEMENT SS_COARSE 2 3 4 0
TB_LCB SS_COARSE 2 3 4 0
TB_STAB SS_COARSE 2 3 4 0
GB_COARSE SS_FINE 2 3 4 0
GB_FINE SS_FINE 2 2 3 1
GB_SAND SS_FINE 2 3 4 0
GB_TYP SS_FINE 2 3 4 0
TB_AC SS_FINE 2 3 4 0
TB_CEMENT SS_FINE 2 3 4 0
TB_LCB SS_FINE 2 3 4 0
TB_STAB SS_FINE 2 3 4 0
TB_STAB SS_FINE 2 3 4 0

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 33. AC surface with two layers between AC and subgrade.
LAYER_
AFTER_
AC_1
LAYER_
AFTER_AC_2
SS_TYPE BC_LAYER_
2_
DESIG
BC_LAYER_
3_
DESIG
BC_LAYER_
SS_
DESIG
BC_
LAYER_
NO
SS_
sub_
24
PC TB_AC SS_COARSE 2 3 4 5 0
PC TB_LCB SS_COARSE 2 3 4 5 0
PC TB_STAB SS_COARSE 2 3 4 5 0
PC_RUBBLIZED GB_TYP SS_COARSE 2 3 4 5 0
PCC_CRACKED GB_COARSE SS_COARSE 2 3 3 4 1
PCC_CRACKED GB_TYP SS_COARSE 2 3 4 5 0
PCC_CRACKED GS_COARSE SS_COARSE 2 3 3 4 1
PCC_CRACKED TB_STAB SS_COARSE 2 3 4 5 0
TB_AC GB_TYP SS_COARSE 2 3 4 5 0
TB_AC GS_COARSE SS_COARSE 2 3 3 4 1
TB_AC GS_FINE SS_COARSE 2 3 4 5 0
TB_AC GS_SAND SS_COARSE 2 3 4 5 0
TB_AC GS_TYP SS_COARSE 2 3 4 5 0
TB_AC TB_AC SS_COARSE 2 2 3 4 0
TB_AC TS_LIME SS_COARSE 2 3 3 4 0
TB_AC TS_STAB SS_COARSE 2 3 4 5 0
TB_LCB GS_COARSE SS_COARSE 2 3 3 4 1
TB_LCB GS_TYP SS_COARSE 2 3 4 5 0
TB_STAB GS_COARSE SS_COARSE 2 3 3 4 1
TB_STAB GS_FINE SS_COARSE 2 3 4 5 0
TB_STAB GS_TYP SS_COARSE 2 3 4 5 0
TB_STAB TS_LIME SS_COARSE 2 3 3 4 0
GB_COARSE GS_COARSE SS_FINE 2 2 3 4 0
GB_COARSE GS_FINE SS_FINE 2 3 3 4 1
GB_COARSE TS_LIME SS_FINE 2 3 3 4 0
GB_COARSE TS_STAB SS_FINE 2 3 4 5 0
GB_FINE TS_LIME SS_FINE 2 3 3 4 0
GB_SAND GS_SAND SS_FINE 2 2 3 4 0
GB_TYP GS_COARSE SS_FINE 2 3 4 5 0
GB_TYP GS_FINE SS_FINE 2 3 3 4 1
GB_TYP GS_LIME SS_FINE 2 3 3 4 0
GB_TYP GS_SAND SS_FINE 2 3 4 5 0
GB_TYP GS_TYP SS_FINE 2 2 3 4 0
GB_TYP TS_LIME SS_FINE 2 3 3 4 0
GB_TYP TS_STAB SS_FINE 2 3 4 5 0
PC GB_FINE SS_FINE 2 3 3 4 1
PC GB_SAND SS_FINE 2 3 4 5 0
PC GB_TYP SS_FINE 2 3 4 5 0
PC TB_AC SS_FINE 2 3 4 5 0
PC TB_CEMENT SS_FINE 2 3 4 5 0
PC TB_LCB SS_FINE 2 3 4 5 0
PC TB_LIME SS_FINE 2 3 3 4 0
PC TB_STAB SS_FINE 2 3 4 5 0
PC_RUBBLIZED GB_TYP SS_FINE 2 3 4 5 0
PCC_CRACKED GB_FINE SS_FINE 2 3 3 4 1
PCC_CRACKED GB_TYP SS_FINE 2 3 4 5 0
PCC_CRACKED TB_AC SS_FINE 2 3 4 5 0
PCC_CRACKED TB_CEMENT SS_FINE 2 3 4 5 0
PCC_CRACKED TB_STAB SS_FINE 2 3 4 5 0
TB_AC GB_TYP SS_FINE 2 3 4 5 0
TB_AC GS_COARSE SS_FINE 2 3 4 5 0
TB_AC GS_FINE SS_FINE 2 3 3 4 1
TB_AC GS_TYP SS_FINE 2 3 4 5 0
TB_AC TB_AC SS_FINE 2 2 3 4 0
TB_AC TS_LIME SS_FINE 2 3 3 4 0
TB_AC TS_STAB SS_FINE 2 3 4 5 0
TB_CEMENT TS_LIME SS_FINE 2 3 3 4 0
TB_LCB GS_COARSE SS_FINE 2 3 4 5 0
TB_LCB GS_FINE SS_FINE 2 3 3 4 1
TB_LCB GS_TYP SS_FINE 2 3 4 5 0
TB_STAB GS_COARSE SS_FINE 2 3 4 5 0
TB_STAB GS_FINE SS_FINE 2 3 3 4 1
TB_STAB GS_TYP SS_FINE 2 3 4 5 0
TB_STAB TS_LIME SS_FINE 2 3 3 4 0
GB_COARSE GS_COARSE SS_COARSE 2 3 3 4 1
GB_COARSE GS_FINE SS_COARSE 2 3 4 5 0
GB_COARSE GS_SAND SS_COARSE 2 3 4 5 0
GB_COARSE GS_TYP SS_COARSE 2 3 4 5 0
GB_COARSE TS_LIME SS_COARSE 2 3 3 4 0
GB_COARSE TS_STAB SS_COARSE 2 3 4 5 0
GB_FINE GS_SAND SS_COARSE 2 3 4 5 0
GB_SAND GS_SAND SS_COARSE 2 2 3 4 0
GB_TYP GS_COARSE SS_COARSE 2 3 3 4 1
GB_TYP GS_FINE SS_COARSE 2 3 4 5 0
GB_TYP GS_SAND SS_COARSE 2 3 4 5 0
GB_TYP GS_TYP SS_COARSE 2 2 3 4 0
GB_TYP TB_AC SS_COARSE 2 3 4 5 0
GB_TYP TS_AC SS_COARSE 2 3 4 5 0
GB_TYP TS_LIME SS_COARSE 2 3 3 4 0
GB_TYP TS_STAB SS_COARSE 2 3 4 5 0
PC GB_COARSE SS_COARSE 2 3 3 4 1
PC GB_SAND SS_COARSE 2 3 4 5 0
PC GB_TYP SS_COARSE 2 3 4 5 0

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 34. PCC surface with two layers between PCC and subgrade.
LAYER_
AFTER_PC_1
LAYER_
AFTER_PC_2
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
SS_DESIG
BC_
LAYER_
NO
SS_
sub_
24
AC TB_CEMENT SS_COARSE 2 3 4 5 0
AC TB_STAB SS_COARSE 2 3 4 5 0
GB_COARSE GS_COARSE SS_COARSE 2 3 3 4 1
GB_COARSE GS_FINE SS_COARSE 2 3 4 5 0
GB_COARSE GS_SAND SS_COARSE 2 3 4 5 0
GB_TYP GS_COARSE SS_COARSE 2 3 3 4 1
GB_TYP GS_FINE SS_COARSE 2 3 4 5 0
GB_TYP GS_SAND SS_COARSE 2 3 4 5 0
GB_TYP GS_TYP SS_COARSE 2 2 3 4 0
TB_AC GB_COARSE SS_COARSE 2 3 3 4 1
TB_AC GB_TYP SS_COARSE 2 3 4 5 0
TB_AC GS_COARSE SS_COARSE 2 3 3 4 1
TB_AC GS_FINE SS_COARSE 2 3 4 5 0
TB_AC GS_SAND SS_COARSE 2 3 4 5 0
TB_AC GS_TYP SS_COARSE 2 3 4 5 0
TB_AC TS_AC SS_COARSE 2 2 3 4 0
TB_AC TS_LIME SS_COARSE 2 3 3 4 0
TB_AC TS_STAB SS_COARSE 2 3 4 5 0
TB_CEMENT GS_FINE SS_COARSE 2 3 4 5 0
TB_LCB GB_TYP SS_COARSE 2 3 4 5 0
TB_LCB GS_COARSE SS_COARSE 2 3 3 4 1
TB_LCB GS_TYP SS_COARSE 2 3 4 5 0
TB_STAB GS_COARSE SS_COARSE 2 3 3 4 1
TB_STAB GS_FINE SS_COARSE 2 3 4 5 0
TB_STAB GS_SAND SS_COARSE 2 3 4 5 0
TB_STAB GS_TYP SS_COARSE 2 3 4 5 0
AC PC SS_FINE 2 3 4 5 0
AC TB_STAB SS_FINE 2 3 4 5 0
GB_COARSE GS_COARSE SS_FINE 2 2 3 4 0
GB_FINE GS_COARSE SS_FINE 2 3 4 5 0
GB_FINE GS_SAND SS_FINE 2 3 4 5 0
GB_TYP GS_COARSE SS_FINE 2 3 4 5 0
GB_TYP GS_FINE SS_FINE 2 3 3 4 1
GB_TYP GS_SAND SS_FINE 2 3 4 5 0
GB_TYP GS_TYP SS_FINE 2 2 3 4 0
GB_TYP TS_LIME SS_FINE 2 3 3 4 0
GB_TYP TS_STAB SS_FINE 2 3 4 5 0
TB_AC GB_TYP SS_FINE 2 3 4 5 0
TB_AC GS_COARSE SS_FINE 2 3 4 5 0
TB_AC GS_FINE SS_FINE 2 3 3 4 1
TB_AC GS_TYP SS_FINE 2 3 4 5 0
TB_AC TS_LIME SS_FINE 2 3 3 4 0
TB_CEMENT GS_FINE SS_FINE 2 3 3 4 1
TB_CEMENT TS_LIME SS_FINE 2 3 3 4 0
TB_LCB GS_COARSE SS_FINE 2 3 4 5 0
TB_LCB GS_FINE SS_FINE 2 3 3 4 1
TB_LCB GS_SAND SS_FINE 2 3 4 5 0
TB_LCB TS_LIME SS_FINE 2 3 3 4 0
TB_LCB TS_STAB SS_FINE 2 3 4 5 0
TB_STAB GB_TYP SS_FINE 2 3 4 5 0
TB_STAB GS_COARSE SS_FINE 2 3 4 5 0
TB_STAB GS_FINE SS_FINE 2 3 3 4 1
TB_STAB TS_LIME SS_FINE 2 3 3 4 0
TB_STAB TS_STAB SS_FINE 2 3 4 5 0

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 35. AC surface with three layers between AC and subgrade.
LAYER_
AFTER_
AC_1
LAYER_
AFTER_AC_2
LAYER_
AFTER_AC_3
SS_TYPE BC_ LAYER_
2_DESIG
BC_ LAYER_
3_DESIG
BC_LAYER_
4_DESIG
BC_ LAYER_
SS_DESIG
BC_ LAYER_
NO
SS_
sub_
24
PC TB_LCB GS_TYP SS_COARSE 2 3 4 4 5 0
PC TB_STAB GS_COARSE SS_COARSE 2 3 4 4 5 1
PC TB_STAB GS_SAND SS_COARSE 2 3 4 4 5 0
PC TB_STAB GS_TYP SS_COARSE 2 3 4 4 5 0
PC_RUBBLIZED TB_STAB GS_TYP SS_COARSE 2 3 4 4 5 0
PCC_CRACKED TB_STAB GS_COARSE SS_COARSE 2 3 4 4 5 1
PCC_CRACKED TB_STAB GS_TYP SS_COARSE 2 3 4 4 5 0
TB_AC GB_TYP GS_COARSE SS_COARSE 2 3 4 4 5 1
TB_AC GB_TYP GS_FINE SS_COARSE 2 3 4 4 5 0
TB_AC GB_TYP GS_TYP SS_COARSE 2 3 3 4 5 0
TB_AC GB_TYP TS_LIME SS_COARSE 2 3 4 4 5 0
TB_AC GB_TYP TS_STAB SS_COARSE 2 3 4 4 5 0
TB_AC GS_COARSE GS_COARSE SS_COARSE 2 3 3 4 4 1
TB_AC GS_COARSE GS_SAND SS_COARSE 2 3 4 4 5 0
TB_AC GS_COARSE TS_LIME SS_COARSE 2 3 4 4 5 0
TB_AC GS_TYP GS_COARSE SS_COARSE 2 3 4 4 5 1
TB_AC GS_TYP GS_TYP SS_COARSE 2 3 3 4 5 0
TB_AC GS_TYP TS_STAB SS_COARSE 2 3 4 4 5 0
TB_AC TB_AC GS_COARSE SS_COARSE 2 2 3 3 4 1
TB_AC TB_AC GS_TYP SS_COARSE 2 2 3 4 5 0
TB_AC TB_AC TS_LIME SS_COARSE 2 2 3 3 4 0
TB_AC TB_AC TS_STAB SS_COARSE 2 2 3 4 5 0
TB_AC TB_STAB GS_COARSE SS_COARSE 2 3 4 4 5 1
TB_AC TS_AC GS_COARSE SS_COARSE 2 2 3 3 4 1
TB_STAB GS_FINE GS_COARSE SS_COARSE 2 3 4 4 5 1
GB_SAND GS_TYP GS_TYP SS_FINE 2 3 3 4 5 0
GB_TYP GS_COARSE GS_FINE SS_FINE 2 3 4 4 5 1
GB_TYP GS_COARSE TS_STAB SS_FINE 2 2 3 4 5 0
GB_TYP GS_SAND GS_FINE SS_FINE 2 3 4 4 5 1
GB_TYP GS_TYP GS_TYP SS_FINE 2 3 3 4 5 0
GB_TYP TS_STAB GS_COARSE SS_FINE 2 3 4 4 5 0
GB_TYP TS_STAB GS_FINE SS_FINE 2 3 4 4 5 1
GB_TYP TS_STAB TS_LIME SS_FINE 2 3 4 4 5 0
PC GB_COARSE GS_COARSE SS_FINE 2 3 3 4 5 0
PC GB_COARSE GS_TYP SS_FINE 2 3 3 4 5 0
PC GB_SAND GS_SAND SS_FINE 2 3 3 4 5 0
PC GB_TYP GS_COARSE SS_FINE 2 3 3 4 5 0
PC GB_TYP GS_FINE SS_FINE 2 3 4 4 5 1
PC GB_TYP GS_SAND SS_FINE 2 3 4 4 5 0
PC GB_TYP TB_LIME SS_FINE 2 3 4 4 5 0
PC GB_TYP TS_LIME SS_FINE 2 3 4 4 5 0
PC TB_AC GS_COARSE SS_FINE 2 3 4 4 5 0
PC TB_AC GS_TYP SS_FINE 2 3 4 4 5 0
PC TB_AC TS_LIME SS_FINE 2 3 4 4 5 0
PC TB_CEMENT GS_FINE SS_FINE 2 3 4 4 5 1
PC TB_LCB TS_LIME SS_FINE 2 3 4 4 5 0
PC TB_STAB GS_FINE SS_FINE 2 3 4 4 5 1
PC TB_STAB TS_LIME SS_FINE 2 3 4 4 5 0
PC_RUBBLIZED GB_TYP GS_SAND SS_FINE 2 3 4 4 5 0
PCC_CRACKED GB_TYP GS_COARSE SS_FINE 2 3 3 4 5 0
PCC_CRACKED GB_TYP GS_SAND SS_FINE 2 3 4 4 5 0
PCC_CRACKED TB_LCB GS_COARSE SS_FINE 2 3 4 4 5 0
TB_AC GB_TYP GS_COARSE SS_FINE 2 3 4 4 5 0
TB_AC GB_TYP GS_FINE SS_FINE 2 3 4 4 5 1
TB_AC GB_TYP GS_SAND SS_FINE 2 3 4 4 5 0
TB_AC GB_TYP TS_LIME SS_FINE 2 3 4 4 5 0
TB_AC GB_TYP TS_STAB SS_FINE 2 3 4 4 5 0
TB_AC GS_COARSE GS_COARSE SS_FINE 2 3 4 4 5 0
TB_AC GS_TYP GS_COARSE SS_FINE 2 3 4 4 5 0
TB_AC GS_TYP GS_SAND SS_FINE 2 3 4 4 5 0
TB_AC TB_AC GB_TYP SS_FINE 2 2 3 4 5 0
TB_AC TB_AC GS_FINE SS_FINE 2 2 3 3 4 1
TB_AC TB_AC GS_TYP SS_FINE 2 2 3 4 5 0
TB_AC TB_AC TS_FINE SS_FINE 2 2 3 4 5 0
TB_AC TB_AC TS_LIME SS_FINE 2 2 3 3 4 0
TB_AC TB_AC TS_STAB SS_FINE 2 2 3 4 5 0
TB_AC TS_AC GS_TYP SS_FINE 2 2 3 4 5 0
TB_AC TS_STAB GS_FINE SS_FINE 2 3 4 4 5 1
TB_CEMENT GS_COARSE GS_FINE SS_FINE 2 3 4 4 5 1
TB_STAB GS_COARSE GS_FINE SS_FINE 2 3 4 4 5 1
TB_STAB GS_COARSE TS_LIME SS_FINE 2 3 4 4 5 0
TB_STAB GS_TYP TS_STAB SS_FINE 2 3 4 4 5 0
TB_STAB TS_LIME GS_FINE SS_FINE 2 3 4 4 5 1
GB_COARSE GS_COARSE TS_AC SS_COARSE 2 2 3 4 5 0
GB_COARSE GS_SAND TS_AC SS_COARSE 2 2 3 4 5 0
GB_TYP AC GS_TYP SS_COARSE 2 3 4 4 5 0
GB_TYP GB_TYP TS_LIME SS_COARSE 2 2 3 3 4 0
GB_TYP GS_COARSE GS_COARSE SS_COARSE 2 3 3 4 4 0
GB_TYP GS_COARSE TS_LIME SS_COARSE 2 3 4 4 5 0
GB_TYP GS_TYP GS_COARSE SS_COARSE 2 2 3 3 4 1
GB_TYP GS_TYP GS_SAND SS_COARSE 2 2 3 4 5 0
GB_TYP GS_TYP GS_TYP SS_COARSE 2 3 3 4 5 0
PC GB_TYP GS_COARSE SS_COARSE 2 3 4 4 5 1
PC GB_TYP GS_FINE SS_COARSE 2 3 3 4 5 0
PC GB_TYP GS_SAND SS_COARSE 2 3 4 4 5 0
PC GB_TYP GS_TYP SS_COARSE 2 3 3 4 5 0
PC TB_AC GS_COARSE SS_COARSE 2 3 4 4 5 1
PC TB_AC GS_FINE SS_COARSE 2 3 4 4 5 0
PC TB_AC GS_TYP SS_COARSE 2 3 4 4 5 0
PC TB_AC TS_LIME SS_COARSE 2 3 4 4 5 0

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 36. PCC surface with three layers between PCC and subgrade.
LAYER_
AFTER_PC_1
LAYER_
AFTER_PC_2
LAYER_
AFTER_PC_3
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
SS_DESIG
BC_
LAYER_
NO
SS_
sub_
24
TB_AC TS_STAB GS_COARSE SS_COARSE 2 3 4 4 5 1
TB_CEMENT GS_FINE TS_LIME SS_COARSE 2 3 4 4 5 0
TB_LCB GB_TYP GS_COARSE SS_COARSE 2 3 4 4 5 1
TB_LCB GS_COARSE TS_LIME SS_COARSE 2 3 4 4 5 0
TB_LCB GS_TYP GS_COARSE SS_COARSE 2 3 4 4 5 1
TB_STAB GB_TYP GS_COARSE SS_COARSE 2 3 4 4 5 1
TB_STAB GS_FINE TS_LIME SS_COARSE 2 3 4 4 5 0
TB_STAB GS_TYP GS_COARSE SS_COARSE 2 3 4 4 5 1
TB_STAB GS_TYP GS_FINE SS_COARSE 2 3 3 4 5 0
TB_STAB GS_TYP GS_TYP SS_COARSE 2 3 3 4 5 0
TB_STAB TS_STAB GS_COARSE SS_COARSE 2 2 3 3 4 1
AC AC PC SS_FINE 2 2 3 4 5 0
AC PC GB_FINE SS_FINE 2 2 3 3 4 1
AC PC GB_SAND SS_FINE 2 2 3 4 5 0
AC PC GB_TYP SS_FINE 2 2 3 4 5 0
AC PC TB_CEMENT SS_FINE 2 2 3 4 5 0
AC PC TB_STAB SS_FINE 2 2 3 4 5 0
AC TB_STAB TS_LIME SS_FINE 2 3 4 4 5 0
GB_TYP GS_COARSE TS_LIME SS_FINE 2 3 4 4 5 0
GB_TYP GS_FINE GS_TYP SS_FINE 2 3 3 4 5 0
TB_AC AC GS_COARSE SS_FINE 2 2 3 4 5 0
TB_AC AC GS_SAND SS_FINE 2 2 3 4 5 0
TB_AC AC TS_LIME SS_FINE 2 2 3 3 4 0
TB_AC GB_TYP GS_FINE SS_FINE 2 3 4 4 5 1
TB_AC GB_TYP TS_LIME SS_FINE 2 3 4 4 5 0
TB_AC GB_TYP TS_STAB SS_FINE 2 3 3 4 5 0
TB_AC TS_AC TS_LIME SS_FINE 2 2 3 3 4 0
TB_AC TS_LIME GS_FINE SS_FINE 2 2 3 3 4 1
TB_CEMENT GS_SAND TS_LIME SS_FINE 2 3 4 4 5 0
TB_LCB GS_COARSE TS_LIME SS_FINE 2 3 4 4 5 0
TB_LCB GS_FINE GS_TYP SS_FINE 2 3 3 4 5 0
TB_STAB GS_COARSE TS_LIME SS_FINE 2 3 4 4 5 0
TB_STAB GS_TYP GS_COARSE SS_FINE 2 3 3 4 5 0
TB_STAB GS_TYP GS_FINE SS_FINE 2 3 4 4 5 1
TB_STAB TS_STAB GS_COARSE SS_FINE 2 3 3 4 5 0
AC AC GB_TYP SS_COARSE 2 2 3 4 5 0
AC AC PC SS_COARSE 2 2 3 4 5 0
AC PC GB_TYP SS_COARSE 2 2 3 4 5 0
AC TB_STAB GS_COARSE SS_COARSE 2 2 3 3 4 1
GB_TYP GB_TYP GS_COARSE SS_COARSE 2 2 3 3 4 1
GB_TYP GS_COARSE GS_COARSE SS_COARSE 2 3 3 4 5 1
GB_TYP GS_COARSE GS_FINE SS_COARSE 2 2 3 4 5 0
GB_TYP GS_COARSE TS_LIME SS_COARSE 2 2 3 3 4 0
GB_TYP GS_FINE GS_FINE SS_COARSE 2 3 3 4 5 0
TB_AC GB_TYP GS_COARSE SS_COARSE 2 3 4 4 5 1
TB_AC GS_COARSE GS_COARSE SS_COARSE 2 3 3 3 4 1
TB_AC GS_COARSE TS_LIME SS_COARSE 2 3 4 4 5 0
TB_AC GS_TYP GS_TYP SS_COARSE 2 3 3 4 5 0

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 37. AC surface with four layers between AC and subgrade.
LAYER_
AFTER_
AC_1
LAYER_
AFTER_
AC_2
LAYER_
AFTER_
AC_3
LAYER_
AFTER_
AC_4
SS_TYPE BC_ LAYER
_2_
DESIG
BC_ LAYER_
3_
DESIG
BC_ LAYER_4_
DESIG
BC_ LAYER_5_
DESIG
BC_ LAYER
_SS_
DESIG
BC_ LAYER_NO SS_
sub_
24
TB_AC GB_TYP TS_STAB GS_COARSE SS_COARSE 2 3 3 4 4 5 1
TB_AC GS_TYP GS_COARSE GS_COARSE SS_COARSE 2 3 4 4 4 5 1
TB_AC TB_AC GB_TYP GS_COARSE SS_COARSE 2 2 3 4 4 5 1
TB_AC TB_AC GS_COARSE TS_LIME SS_COARSE 2 2 3 4 4 5 0
GB_TYP TS_AC GS_TYP GS_TYP SS_FINE 2 2 3 3 4 5 0
PC TB_CEMENT GS_COARSE TS_LIME SS_FINE 2 2 3 4 4 5 0
PC TB_CEMENT GS_SAND TS_LIME SS_FINE 2 3 3 4 4 5 0
PC TB_STAB GS_COARSE TS_LIME SS_FINE 2 3 3 4 4 5 0
PC TB_STAB GS_TYP GS_COARSE SS_FINE 2 3 4 4 4 5 0
PC TB_STAB TS_STAB GS_COARSE SS_FINE 2 3 3 4 4 5 0
PCC_
CRACKED
TB_STAB GS_TYP GS_FINE SS_FINE 2 3 4 4 4 5 1
TB_AC GB_TYP TS_STAB GS_COARSE SS_FINE 2 3 3 3 4 5 0
TB_AC GB_TYP TS_STAB GS_FINE SS_FINE 2 3 4 4 4 5 1
TB_AC TB_AC GB_TYP TS_STAB SS_FINE 2 2 3 3 4 5 0
TB_AC TB_AC TS_STAB GS_FINE SS_FINE 2 2 3 4 4 5 1
TB_AC TS_AC GS_TYP GS_FINE SS_FINE 2 2 3 4 4 5 1
TB_LCB TB_STAB TS_STAB TS_STAB SS_FINE 2 3 3 3 4 5 0
PC AC PC GB_TYP SS_COARSE 2 2 2 3 4 5 0
PC GB_TYP GS_FINE GS_FINE SS_COARSE 2 3 3 3 4 5 0
PC TB_AC TS_STAB GS_COARSE SS_COARSE 2 3 3 4 4 5 1
PC TB_CEMENT GS_FINE TS_LIME SS_COARSE 2 3 4 4 4 5 0
PC TB_STAB GS_FINE TS_LIME SS_COARSE 2 3 4 4 4 5 0
PC TB_STAB TS_STAB GS_COARSE SS_COARSE 2 3 3 4 4 5 1
PCC_
CRACKED
TB_STAB GS_TYP GS_FINE SS_COARSE 2 3 4 4 4 5 0
TB_AC GB_TYP GB_TYP GS_COARSE SS_COARSE 2 3 3 4 4 5 1
TB_AC GB_TYP GS_COARSE TS_LIME SS_COARSE 2 3 4 4 4 5 0

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 38. PCC surface with four layers between PCC and subgrade.
LAYER_
AFTER_
PC_1
LAYER_
AFTER_
PC_2
LAYER_
AFTER_
PC_3
LAYER_
AFTER_
PC_4
SS_TYPE BC_ LAYER
_2_
DESIG
BC_ LAYER
_3_
DESIG
BC_ LAYER
_4_
DESIG
BC_ LAYER
_5_
DESIG
BC_ LAYER
_SS_
DESIG
BC_ LAYER_
NO
SS_
sub_
24
AC AC PC GB_TYP SS_COARSE 2 2 2 3 4 5 0
AC PC GB_TYP GS_COARSE SS_COARSE 2 2 3 4 4 5 1
AC PC GB_TYP GS_SAND SS_COARSE 2 2 3 4 4 5 0
AC PC TB_STAB GS_COARSE SS_COARSE 2 2 3 4 4 5 1
AC PCC_
CRACKED
TB_STAB GS_TYP SS_COARSE 2 2 3 4 4 5 0
GB_
COARSE
GS_
COARSE
GS_FINE GS_FINE SS_COARSE 2 2 3 3 4 5 0
TB_AC GB_TYP GB_TYP GS_COARSE SS_COARSE 2 3 3 4 4 5 1
TB_LCB GS_
COARSE
GS_
COARSE
GS_TYP SS_COARSE 2 3 3 4 4 5 0
AC AC PC GB_TYP SS_FINE 2 2 2 3 4 5 0
AC PC GB_
COARSE
TS_LIME SS_FINE 2 2 3 4 4 5 0
AC PC GB_TYP GS_COARSE SS_FINE 2 2 3 4 4 5 0
AC PC GB_TYP GS_SAND SS_FINE 2 2 3 4 4 5 0
TB_AC GB_TYP GS_
COARSE
TS_LIME SS_FINE 2 3 3 4 4 5 0
TB_AC GB_TYP GS_FINE GS_TYP SS_FINE 2 3 3 4 4 5 0

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 39. AC surface with five layers between AC and subgrade.
LAYER_
AFTER_
AC_1
LAYER_
AFTER_
AC_2
LAYER_
AFTER_
AC_3
LAYER_
AFTER_
AC_4
LAYER_
AFTER_
AC_5
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
5_DESIG
BC_
LAYER_
6_DESIG
BC_
LAYER_
SS_
DESIG
BC_
LAYER_
NO
SS_
sub_
24
PC GB_COARSE GS_COARSE GS_FINE GS_FINE SS_COARSE 2 3 3 4 4 4 5 0
TB_AC AC AC AC TS_STAB SS_COARSE 2 3 3 3 4 4 5 0
GB_TYP TS_AC GS_TYP GS_TYP GS_TYP SS_FINE 2 3 4 4 4 4 5 0

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 40. PCC surface with six layers between PCC and subgrade.
LAYER_
AFTER_
PC_1
LAYER_
AFTER_
PC_2
LAYER_
AFTER_
PC_3
LAYER_
AFTER_
PC_4
LAYER_
AFTER_
PC_5
LAYER_
AFTER_
PC_6
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
5_DESIG
BC_
LAYER_
6_DESIG
BC_
LAYER_
7_DESIG
BC_
LAYER_
SS_
DESIG
BC_
LAYER_
NO
SS_
sub_
24
AC AC AC PC GB_COARSE GS_TYP SS_FINE 2 2 2 3 4 4 4 5 1

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 41. AC surface with seven layers between AC and subgrade.
LAYER_
AFTER_
AC_1
LAYER_
AFTER_
AC_2
LAYER_
AFTER_
AC_3
LAYER_
AFTER_
AC_4
LAYER_
AFTER_
AC_5
LAYER_
AFTER_
AC_6
LAYER_
AFTER_
AC_7
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
5_DESIG
BC_
LAYER_
6_DESIG
BC_
LAYER_
7_DESIG
BC_
LAYER_
8_DESIG
BC_
LAYER_
SS_
DESIG
BC_
LAYER_
NO
SS_
sub_
24
GB_TYP GS_TYP GS_TYP TS_AC GS_TYP GS_TYP GS_TYP SS_FINE 2 2 2 3 3 3 3 3 4 0

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

Table 42. PCC surface with seven layers between PCC and subgrade.d
LAYER_
AFTER_
PC_1
LAYER_
AFTER_
PC_2
LAYER_
AFTER_
PC_3
LAYER_
AFTER_
PC_4
LAYER_
AFTER_
PC_5
LAYER_
AFTER_
PC_6
LAYER_
AFTER_
PC_7
SS_TYPE BC_
LAYER_
2_DESIG
BC_
LAYER_
3_DESIG
BC_
LAYER_
4_DESIG
BC_
LAYER_
5_DESIG
BC_
LAYER_
6_DESIG
BC_
LAYER_
7_DESIG
BC_
LAYER_
8_DESIG
BC_
LAYER_
SS_
DESIG
BC_
LAYER_
NO
SS_
sub_
24
AC AC AC AC PC TB_CEMENT TS_LIME SS_FINE 2 2 2 2 3 4 4 4 5 1
AC AC AC AC PC TB_STAB TS_LIME SS_FINE 2 2 2 2 3 4 4 4 5 1

Note: Abbreviations found in the table are standard notations included in the LTPP data tables and are defined in the LTPP database.

 

 

 

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