The allowable spread length generally determined by state or local regulations is based on the road s classification.
Road gutter design.
When streamflow records are not available peak discharge can be estimated by the rational method or formula and is recommended for use on channels draining less than 80 hectares 200 acres.
The gutter is the channel alongside the road through which stormwater runoff is conveyed to storm sewer inlets.
Gutter and inlet equations anchor.
Department recommendation for design is the use of the rough texture values.
A 0 area of gutter road section beyond the depression width ft 2 or.
Spread is the top width of the flowing water on the road measured from the curb.
When a curbstone is present a gutter may be formed by the convergence of.
Michigan design manual road design chapter 6 surfacing and shoulders index continued 6 06 15 minimum curb and gutter grades 6 06 16 curb and gutter for erosion control 6 06 17 concrete curb cap 6 06 18 deleted 6 06 19 driveway openings 6 06 20 curb and gutter adjacent to hma base course 6 07 concrete divider 6 08 sidewalk.