Countermeasures to Protect Bridge Piers from Scour
Explores practical selection criteria for bridge-pier scour countermeasures; guidelines and specifications for the design and construction of those countermeasures; and guidelines for their inspection, maintenance, and performance evaluation. Produced along with the report is an interactive version of the countermeasure selection methodology, which defines the proper conditions for the use of each specific countermeasure, and a reference document that contains detailed laboratory testing results and translations of three German "Code of Practice" documents.
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Chapter 2 Findings
Chapter 3 Testing Interpretation Appraisal and Results
Chapter 4 Conclusions and Suggested Research
Chapter 5 References
B1 Appendix B Countermeasure Selection Methodology
E1 Appendix E Guidelines for Pier Scour Countermeasures
F1 Appendix F Guidelines for Pier Scour Countermeasures
G1 Appendix G Guidelines for Pier Scour Countermeasures
H1 Appendix H Summary of Laboratory Testing Program
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AASHTO AASHTO M 288 ACB system anchors application areal extent armor layer Articulating Concrete Block ASTM ASTM International base soil bridge piers cables Chiew construction contraction scour countermeasure type coverage criteria depth downstream fabric factor of safety failure Federal Highway Administration FHWA ﬁeld Figure ﬁll ﬁlled ﬁlling ﬁlter layer ﬁlter material ﬂexible ﬂood ﬂow ﬂume ft/s gabion mattress geocontainers Geosynthetics geotextile ﬁlter gradation grain size distribution granular ﬁlter Grout-Filled grout-ﬁlled mattress guidance guidelines Heibaum hours at 2.0Vcrit Hydraulic Engineering inspection laboratory testing Lagasse Lauchlan layout lbs Class Loss/damage maintenance method non-woven partially grouted riprap performance evaluation periphery permeability pier scour countermeasure pier widths placed under water plasticity index recommended revetment riprap installation riprap layer rock sand scour hole scour protection Section sediment selection shear stress slope speciﬁcations stability standard stone subgrade surface termination detail tion turndown typically reported velocity voids wire Zevenbergen