Spreadsheet: dea98ead-70f1-4355-96cf-74a262c8e9be
Sheet: Sheet1

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Tractive Force Procedure--Riprap-Mild Gradient (<10%):
Recommended for design of temporary synthethic liners or riprap liners
Guide to [NAME]: |  |  | User Input Data |  |  |  | Calculated Value |  |  |  | Reference Data
Designed By: |  |  |  |  | Date:
Checked By: |  |  |  |  | Date:
Company:
Project Name:
Project No.:
Site Location (City/Town) |  |  | Raleigh
Channel/Waterway Id. |  |  | 101
Permissible shear stress, [NAME] (lb/ft2) | 2
Design storm | 2-yr
[NAME], Q (cfs) | 22
Unit weigt of water, y (lb/ft3) | 62.4
Channel slope, s (ft/ft) | 0.05
Trapezoidal | [NAME], Z | [NAME] | [NAME], b | [NAME]. Depth, d | [NAME], T | Cross-sectional area, A | Wetted Perimeter, P | [NAME], R | [NAME], d50 | Manning's Coefficient, n | Permissible Shear Stress, Taud | Velocity, V | Velocity Check | Channel Capacity, Q | Capacity Check | Shear Stress, Tau | Shear Stress Check
Figure 8.05b |  |  | (ft) | (ft) | (ft) | (ft2) | (ft) | (ft) | (ft) |  | (lb/ft2) | (ft/s) |  | (cfs) |  | (lb/ft2)
 | Fig. 8.05b |  | Fig. 8.05b | Fig. 8.05b | Fig. 8.05b | Fig. 8.05b | Fig. 8.05b | Fig. 8.05b |  | Table 8.05f | Table 8.05g | Manning's Eqn. |  | Continuity Eqn.
Vary riprap size and depth until Required Q is met and Tau<[NAME] or use Figure 8.05d | 3 | OK | 4 | 0.92 | 9.52 | 6.219200000000001 | 9.818590894709818 | 0.6334106458545756 | 0.5 | 0.069 | 2 | 3.561331645106186 | LINER REQ'D | 22.1486337672444 | OK | 2.8704 | REVISE
 | 3 | OK | 4 | 0.95 | 9.7 | 6.5075 | 10.00832755431992 | 0.6502085353102928 | 1 | 0.078 | 4 | 3.205864128190571 | LINER REQ'D | 20.86216081420014 | REVISE | 2.964 | OK
 | 3 | OK | 4 | 1 | 10 | 7 | 10.32455532033676 | 0.6779953017648879 | 1 | 0.078 | 4 | 3.296561058858188 | LINER REQ'D | 23.07592741200731 | OK | 3.12 | OK
Figure 8.05d | 3 | OK |  |  | 0 | 0 | 0 |  |  |  |  |  |  |  |  | 0 | REVISE
V-Shaped | [NAME], Z | [NAME] | [NAME]. Depth, d | [NAME], T | Cross-sectional area, A | Wetted Perimeter, P | [NAME], R | [NAME], d50 | Manning's Coefficient, n | Permissible Shear Stress, Taud | Velocity, V | Velocity Check | Channel Capacity, Q | Capacity Check | Shear Stress, Tau | Shear Stress Check
Figure 8.05b |  |  | (ft) | (ft) | (ft2) | (ft) | (ft) | (ft) |  | (lb/ft2) | (ft/s) |  | (cfs) |  | (lb/ft2)
 | Fig. 8.05b |  | Fig. 8.05b | Fig. 8.05b | Fig. 8.05b | Fig. 8.05b | Fig. 8.05b |  | Table 8.05f | Table 8.05g | Manning's Eqn. |  | Continuity Eqn.
Vary riprap size and depth until Required Q is met and Tau<[NAME]. | 3 | OK |  | 0 | 0 | 0 | 0 |  |  |  |  |  |  |  | 0 | REVISE
 | 3 | OK |  | 0 | 0 | 0 | 0 |  |  |  |  |  |  |  | 0 | REVISE
 | 3 | OK |  | 0 | 0 | 0 | 0 |  |  |  |  |  |  |  | 0 | REVISE
 | 3 | OK |  | 0 | 0 | 0 | 0 |  |  |  |  |  |  |  | 0 | REVISE
Parabolic | [NAME], T | [NAME]. Depth, d | Cross-sectional area, A | Wetted Perimeter, P | [NAME], R | [NAME], d50 | Manning's Coefficient, n | Permissible Shear Stress, Taud | Velocity, V | Velocity Check | Channel Capacity, Q | Capacity Check | Shear Stress, Tau | Shear Stress Check
Figure 8.05b | (ft) | (ft) | (ft2) | (ft) | (ft) | (ft) |  | (lb/ft2) | (ft/s) |  | (cfs) |  | (lb/ft2)
 | Fig. 8.05b | Fig. 8.05b | Fig. 8.05b | Fig. 8.05b | Fig. 8.05b |  | Table 8.05f | Table 8.05g | Manning's Eqn. |  | Continuity Eqn.
 | 10 | 0.5 | 3.333333333333333 | 10.06666666666667 | 0.3311258278145696 | 0.5 | 0.069 | 2 | 2.311093686792645 | RIPRAP REQ'D | 7.703645622642148 | REVISE | 1.56 | OK
 | 8 | 0.8 | 4.266666666666667 | 8.213333333333333 | 0.5194805194805195 | 1 | 0.078 | 4 | 2.760299321441417 | RIPRAP REQ'D | 11.77727710481671 | REVISE | 2.496 | OK
 | 9 | 1.1 | 6.600000000000001 | 9.358518518518519 | 0.7052398290327687 | 1 | 0.078 | 4 | 3.38429247957554 | RIPRAP REQ'D | 22.33633036519856 | OK | 3.432 | OK
 |  |  | 0 |  |  |  |  |  |  |  |  |  | 0 | REVISE
Angle of repose |  |  |  | Figure 8.05g
Ratio of [NAME] side shear to [NAME] bottom shear, [NAME] |  |  |  | Figure 8.05h
Tractive force ratio, K2 |  |  |  | Figure 8.05i
d50 bottom |  |  |  | From Tables above
d50 sides