Chapter 7 Drainage of Low-Volume Roads

More documents

Recommendations

Info

Photo 7.6 Armor ditches with vegetation, rock, masonry, or concrete to resist ditch erosion and carry the water to a stable exit point. Figur igure e 7.6 Typical drop inlet structure types (with culvert cross-drains). Use drop inlet structure to control the level of water, turn water into the pipe, and prevent downcutting and erosion of the ditch. Roadbed surface Grass for Erosion Control Energy Dissipation with Riprap, Concrete Apron or Splash pool with water General Information Bottom of ditch Roadbed Surface Slope 45 cm Slope 30 cm Window 45 cm "1 m Drop inlet structure Culvert Pipe (30-60 cm diameter) Sand trap 30 cm 0.6-1.2 m Masonry LOW-VOLUME ROADS BMPS:62 Design and Installation Detail 90 cm Metal
Figur igure 7.7 Culvert outlet protection. Fill Slope Rocks: 15-50 kg 5% greater than 25 kg 0.5 m minimum 1-2 m 15-30 cm minimum depth Ground Line Photo 7.7 A rock armored ditch and metal drop inlet to control the water and prevent down-cutting of the ditch. LOW-VOLUME ROADS BMPS : 63
Page 1 and 2: Chapter 7 Draina ainage of Low-Volu
Page 3 and 4: Table 7.1 Recommended Maximum Dista
Page 5 and 6: • Long sustained road grades that
Page 7 and 8: ○ ○ ○ ○ ○ ○ ○ ○ ○
Page 9: slow down the velocity of water, as
Page 13 and 14: NATURAL STREAM CROSSINGS Road cross
Page 15 and 16: Figur igure 7.10 Natural drainage c
Page 17 and 18: Figur igure 7.11 (continued) Good I
Page 19 and 20: WET AREAS AND MEADOW CROSSINGS, USE
Page 21 and 22: Figur igure 7.15 Pole or plastic pi

Chapter 7 Drainage of Low-Volume Roads

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?