Riprap, Flow-Through Rockfill, and Reinforced Rockfill

More documents

Recommendations

Info

Sizing of Rock• Manual gives design guidance based onthree research studies• Abt and Johnson (1991)– Slopes of 2% to 10%• Robinson et al. (1998)– Slopes of 17% to 40%• Frizell et al. (1998)– Slopes of 40% to 50%
Design Guidance• Similarities– Angular riprap– D 50 < 24 inches (limits of testing)– Riprap layer thickness 2*D50 or greater– Bedding material satisfying filter criteria• Differences– Abt and Robinson relate q allowable to D 50 and slope– Frizell method incorporates variable specificgravity, porosity, and coefficient of uniformity(D 60 /D 10 )
Page 2 and 3: Manual Chapters• Chapter 7: Flow-
Page 4: Simplifications• Existing equatio
Page 8 and 9: Allowable Through-FlowDownstream Sl
Page 10 and 11: Mass Slope Stability• Mass or glo
Page 12 and 13: Filter Compatibility• Filter comp
Page 14 and 15: Reinforcement• To best prevent de
Page 16 and 17: Anchor Bars• Alternatives to embe
Page 18 and 19: Reinforcement - Extent• To resist
Page 20 and 21: Corrosion• Corrosion shortens the
Page 22 and 23: Fighting Corrosion - Coatings• Fi
Page 24 and 25: Vulnerabilities and Risk• Groins
Page 26 and 27: Pit 7
Page 28 and 29: Pit 7• 36-ft-high rockfill, about
Page 30 and 31: Des Arc Bayou No. 3• NRCS - Arkan
Page 32 and 33: Des Arc Bayou - Details
Page 34 and 35: Riprap• Subject of Chapter 8• R
Page 36 and 37: Recent Research• Most has focused
Page 40 and 41: Basic Design Concept• Much of the
Page 42 and 43: Example:4.5q = 30 cfs/ftFixed q all
Page 44 and 45: Upper Stoneville20-ft high, 400-ft

Riprap, Flow-Through Rockfill, and Reinforced Rockfill

Create successful ePaper yourself

Delete template?

Save as template?