Approved Plans - EXE22-0013 · EXE22/0013

GEOLOGY: Qhd/2‐SEQ
Location: Lot 35 on RP203515 (No.285) David Low Way,
Peregian Beach Qld 4573
1. Natural Surface Slope                                 8. Slope of Cut Face
                                                           Area                             Level   Factor
  Area                                  Level   Factor
                                                                  Less than 30 Degrees       L       0.5
  x        Less than 5 degrees           L       0.1
                                                           x      Between 30 and 45          VH       1
           Between 5 and 15              M       0.5
                                                                  Degrees
           Degrees
                                                                  Between 45 and 60          VH      1.5
           Between 15 and 30             M       0.8
                                                                  Degrees
           degrees
                                                                  Greater than 60            VH       3
           Between 30 and 45             H       1.2
                                                                  Degrees
           degrees
           More than 45 Degrees          M       0.8
                                                         9. Material in Cutting
                                                           Area                             Level   Factor
2. Slope Shape
  Area                                  Level   Factor            High Strength Rock          L      0.5
           Crest or ridge                L       0.7              Medium Strength Rock        L       1
           Planar/ Convex                M       0.9              Low Strength Rock          M       1.2
           Rough/ Irregular              M       1.2              Very Low Strength Rock     H       1.5
                                                                  and Soil
  x        Concave                       H       1.5
                                                           x      Soil                       VH       2

3. Site Geology
  Area                                  Level   Factor   10. Cut Slope Support
                                                           Area                             Level   Factor
           Volcanic Extrusive Rock       H       1.1
                                                                  Concrete Wall               L      0.5
  x        Sedimentary Rock              M        1
                                                                  Crib Wall                  M       0.9
           Low Grade Metamorphic         M        1
           Rock                                                   Gabion Wall                M        1
           High Grade Metamorphic        L       0.9              Rock Wall                  H       1.5
           Rock                                                   Timber Wall                H        2
                                                           x
           Volcanic Intrusive Rock       M        1
                                                                  Unsupported                H        2
4. Soils
  Area                                  Level   Factor   11. Concentration of Surface Water
                                                           Area                             Level   Factor
           Rock at Surface               VL      0.1
                                                                  Ridge                      L       0.7
           Residual Soil < 1m deep       L       0.5
                                                                  Crest                      M       0.8
           Residual Soil 1 - 3m deep     M       0.9
                                                                  Upper Slope                M       0.9
  x        Residual Soil > 3m deep       H       1.5
                                                                  Mid Slope                  H       1.2
           Colluvial Soil < 1m deep      H       1.5
                                                           x      Lower Slope                H       1.5
           Colluvial Soil 1 - 3m deep    VH       2
           Colluvial Soil > 3m deep      VH       4
                                                         12. Wastewater Disposal
                                                           Area                             Level   Factor
5. Fill Height
  Area                                  Level   Factor     x      Fully Sewered              M        1
           None                          L       0.9              Onsite Disposal -          M       1.2
  x                                                               Surface
           Less than 1.0 m               M       1.1
                                                                  Onsite Disposal - Soak     H       1.5
           Between 1.0 m and 3.0 m       M       1.3              Pit /Trench
           Between 3.0 m and 6.0 m       H       1.7
           Greater than 6.0 m            VH      2.5     13. Stormwater Disposal
                                                           Area                             Level   Factor
6. Evidence of Groundwater                                 x      All Stormwater Piped to     L      0.7
  Area                                  Level   Factor            Street Drainage
                                                                  Rainwater Tank with        M        1
  x        None Apparent                  L      0.7
                                                                  Overflows
           Minor Moistness               M       0.9              Stormwater Discharge       H       1.5
           Generally Wet                 H       1.5              on Site
           Subsurface Springs            VH       3
                                                         14. Evidence of Instability
                                                           Area                             Level   Factor
7. Cut Height
  Area                                  Level   Factor     x      No sign of instability     L       0.8
           None (Go to section 11)       L       0.9              Soil Creep                 H       1.2
           Less than 1.0 m               M       1.1              Minor Irregularity         VH       2
  x
           Between 1.0 m and 3.0 m       M       1.3              Major Irregularity         VH       5
           Between 3.0 m and 6.0 m       H       1.7              Active Instability         VH      10
           Greater than 6.0 m            VH      2.5