|
<br />CHAPTER 6 - INSPECTION OF BRIDGES FOR SCOUR
<br />
<br />103
<br />
<br />6.1 INTRODUCTION. , , , . . . . . . , . . , . . . , , , . , , . , , , , , , , , , , , , . . , . , , , . . , , , , , , , " 103
<br />6.2 OFFICE REVIEW .',.........,."""""""""""'.""",."",.,, 103
<br />6.3 BRIDGE INSPECTION ...,...".".",."."""".."""""".",.". 104
<br />
<br />6,3.1 Assessing the Substructure Condition ",..""""..",'."",.".""" 104
<br />6.3,2 Assessing Scour Potential at Bridges. , , . , , , , , , , , , . , , , , , , , , , , , , , , , , , , , . " 105
<br />6.3.3 Underwater Inspections, . , , . . , , , . , , , , , , , , , , . , , , , , , , , , . , , , , , , , , , , , . " 105
<br />6.3.4 Notification Procedures , , . . , . . . . . . , . , , . , , , , , . , , , . , , , , . , , , , , , , , , , . , ,. 105
<br />
<br />CHAPTER 7 - PLAN OF ACTION FOR INSTALLING SCOUR COUNTERMEASURES .",."., 109
<br />
<br />7.1 INTRODUCTION. . . . . , . . . . , . . , . . , , , . , , , , , , , , . . , , , , , . , , , , , , , , , , , , . , . , " 109
<br />
<br />7.1.1 New Bridges .....,..."""""""."..,.",."".""""",., 109
<br />7.1.2 Existing Bridges. . , . . . . , . , . . , , . , , , , , , , , , . . , , , , , , " . , , , , , , , , , , , , , ., 109
<br />
<br />7.2 MONITORING, INSPECTING, AND CLOSING SCOUR-CRITICAL BRIDGES ", , , , , , , " 110
<br />7.3 TEMPORARY COUNTERMEASURES .".....,.,.""""""""",."",., 111
<br />7.4 SCHEDULING CONSTRUCTION OF SCOUR COUNTERMEASURES, , , , , , , , , , , , , , ", 111
<br />7.5 TYPES OF COUNTERMEASURES, , , . , , , , , , , , , , , , . . , , , , , . , , , . , , " , , . , , . , , " 111
<br />
<br />7.5.1 Rock Riprap at Piers and Abutments, , , , , , , , , , , , , " , , , . , , , , , , , . , , , , , , , " 111
<br />
<br />7.5,2 Guide Banks .'.',.....".."""",."..."""""."".""", 116
<br />7.5,3 Channel Improvements "."""""",..,."""."",."'.',.",,. 116
<br />7.5.4 Structural Scour Countenneasures . . , , , , , . , . , , . . , , . , , . , " , , , , , , , , , , , , , " 117
<br />7,5,5 Constructing Sills or Drop Structures ,..,."""""""."",..""",. 117
<br />7.5.6 Constructing Relief Bridges or Extra Spans on the Main Bridge """,..",'.", 117
<br />
<br />7.6 SUMMARY. , , , . , . . , . , , . , , . . , , . . , , , . , , . , , , , , , , , , , , , , , , . . , , , , , . , . . , , ,. 117
<br />
<br />LITERATURE CITED
<br />
<br />119
<br />
<br />APPENDICES:
<br />
<br />A, Use of the Metric System ,.",.".".",.".""""""",.""",..',.", 127
<br />B, Interim Procedures for Pressure Flow Scour ,."..""""""""""",'..,.", 137
<br />C, WSPRO Input and Output for Example Scour Problem """";""""""""",,, 149
<br />D. Hydraulics of Tidal Bridges, Maryland SHA's Procedure , , , , , , , , , , , , , , . , , , , , , , , , , , , " 159
<br />E, FHW A 1995 Recording and Coding Guide for tbe Structure Inventory and Appraisal of the
<br />
<br />Nation's Bridges .",.".."""""".,.,.""'."""",."""""",, 181
<br />F, Scour Measuring and Monitoring Equipment """""""""""""""",.", 191
<br />G, Interim Procedure for Estimating Pier Scour with Debris """""".,.""""".", 201
<br />
<br />Hi
<br />
|