# Review of The Long-Term Pavement Performance (LTPP)
Backcalculation Results

## Appendix A

This appendix consists of charts showing the screening results
of the section average backcalculation data.

**Figure 55. Charts. Screening results of
section average elastic moduli of the asphalt concrete layer for
the flexible sections in the MON_DEFL_FLX_BAKCALC_SECT table based
on the linear elastic model.**

**Figure 56. Charts. Screening results of
section average elastic moduli of the base layer for the flexible
sections in the MON_DEFL_FLX_BAKCALC_SECT table based on the linear
elastic model.**

**Figure 57. Charts. Screening results of
section average elastic moduli of the subgrade for the flexible
sections in the MON_DEFL_FLX_BAKCALC_SECT table based on the linear
elastic model.**

**Figure 58. Charts. Screening results of
section average elastic moduli of the asphalt concrete layer for
the flexible sections in the MON_DEFL_FLX_BAKCALC_SECT table based
on the nonlinear elastic model.**

**Figure 59. Charts. Screening results of
the section average elastic moduli of the base layer for the
flexible sections in the MON_DEFL_FLX_BAKCALC_SECT table based on
the nonlinear elastic model.**

**Figure 60. Charts. Screening results of
the section average elastic moduli of the subgrade for the flexible
sections in the MON_DEFL_FLX_BAKCALC_SECT table based on the
nonlinear elastic model.**

**Figure 61. Charts. Screening results of
the section average elastic moduli of the PCC slab for the rigid
sections in the MON_DEFL_FLX_BAKCALC_SECT table based on the linear
elastic model using MODCOMP.**

**Figure 62. Charts. Screening results of
the section average elastic moduli of the base layer for the rigid
sections in the MON_DEFL_FLX_BAKCALC_SECT table based on the linear
elastic model using MODCOMP.**

**Figure 63. Charts. Screening results of
the section average elastic moduli of the subgrade for the rigid
sections in the MON_DEFL_FLX_BAKCALC_SECT table based on the linear
elastic model using MODCOMP.**

**Figure 64. Charts. Screening results of
the section average elastic moduli of the PCC slab for the rigid
sections in the MON_DEFL_RGD_BAKCALC_SECT table based on the
slab-on-elastic-solid model.**

**Figure 65. Charts. Screening results of
the section average elastic moduli of the PCC slab for the rigid
sections in the MON_DEFL_RGD_BAKCALC_SECT table based on the
slab-on-dense-liquid model.**

**Figure 66. Charts. Screening results of
the section average elastic moduli of the base layer for the rigid
sections in the MON_DEFL_RGD_BAKCALC_SECT table based on the
slab-on-elastic-solid model.**

**Figure 67. Charts. Screening results of
the section average elastic moduli of the base layer for the rigid
sections in the MON_DEFL_RGD_BAKCALC_SECT table based on the
slab-on-dense-liquid model.**

**Figure 68. Charts. Screening results of
the section average elastic moduli of the subgrade for the rigid
sections in the MON_DEFL_RGD_BAKCALC_SECT table based on the
slab-on-elastic-solid model.**

**Figure 69. Charts. Screening results of
the section average k-values of the subgrade for the rigid sections
in the MON_DEFL_RGD_BAKCALC_SECT table based on the
slab-on-dense-liquid model.**