Laserfiche WebLink
<br />III. CONCLUSIONS <br /> <br />A. Level 1 analysis results in a qualitative assessment of stream <br />stability . <br /> <br />B. If stream instability exists, a decision is made edther to proceed to the <br />more detailed Level 2 evaluation, or to complete the analysisfevaluation <br />based only on the Level 1 assessment. Usually design or scour evaluation <br />of a bridge or selecting and designing countermeasures will require a Level <br />2 analysis, <br /> <br />C. For the 1-5 bridge failure, a Level 1 analysis provided significa~t insight <br />into channel instability problems on L.os Gatos Creek. A more detailed <br />Level 2 analysis was required to determine the actual cause of the failure <br />(see Lesson 5). <br /> <br />NOTES: <br /> <br />4.15 <br />