Changes

For concentrated overland flow:  

For concentrated overland flow:  

* Draining roads Catch basins or other inlet structures should be located at all sag points in the gutter grade and immediately upgrade of median breaks, crosswalks and street intersections,  

(i) Catch basins or other inlet structures should be located at all sag points in the gutter grade and immediately upgrade of median breaks, crosswalks and street intersections,  

* Inlet types include curb openings, side inlet catch basins, trench drains, and other pre-fabricated inlet structures,  

(ii) inlet types include curb openings, side inlet catch basins, trench drains, and other pre-fabricated inlet structures,  

* Spillways aid in turning flow 30, 45 or 90 degrees into the practice,  

(iii) spillways aid in turning flow 30, 45 or 90 degrees into the practice,  

* If the inlet structure itself does not provide sedimentation or filtration pre-treatment, incorporate a pre-treatment gravel diaphragms geotextile and stone filter inlet at curb opening or spillway locations to isolate sediment, trash and debris for ease of removal, and  

(iv) if the inlet structure itself does not provide sedimentation or filtration pre-treatment, incorporate a geotextile and stone filter inlet at curb opening or spillway locations to isolate sediment, trash and debris for ease of removal, and  

* Provide provide a 50 to 100 mm drop in elevation between inlet invert and top elevation of the gravel diaphragmpre-treatment practicestone cover.

(v) provide a 50 to 100 mm drop in elevation between inlet invert and top elevation of the stone cover.

 

===Sizing===

===Sizing===