Difference between revisions of "Bioretention: Streetscapes"
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<imagemap> | |||
Image:Extended tree pit.png|thumb|700 px|This is an image map of an extended tree pit, clicking on components will load the appropriate article. | |||
rect 241 1143 296 1338 [[Soil cells]] | |||
rect 616 1143 669 1338 [[Soil cells]] | |||
rect 359 1148 517 1248 [[Bioretention: Filter media]] | |||
rect 361 1250 517 1277 [[Choking layer]] | |||
rect 299 1280 428 1337 [[Reservoir gravel]] | |||
rect 540 1280 613 1337 [[Reservoir gravel]] | |||
rect 468 1280 514 1337 [[Reservoir gravel]] | |||
rect 360 1124 411 1146 [[Forebays]] | |||
rect 510 1124 562 1146 [[Forebays]] | |||
rect 368 440 415 492 [[Forebays]] | |||
rect 513 440 560 492 [[Forebays]] | |||
rect 560 1099 594 1123 [[Inlets|Slotted drain]] | |||
rect 321 454 366 498 [[Inlets|Depressed drain]] | |||
circle 421 256 152 [[Trees]] | |||
poly 433 1078 447 1083 443 998 502 977 562 989 598 971 610 784 570 657 433 581 393 594 297 680 264 756 239 866 272 937 331 1000 432 1002 433 1076 [[Trees]] | |||
poly 362 1115 366 1091 406 1068 446 1087 466 1095 499 1078 552 1093 555 1111 530 1104 504 1120 504 1140 419 1141 419 1121 [[Perennials: List]] | |||
circle 464 442 48 [[Perennials: List]] | |||
circle 464 86 46 [[Perennials: List]] | |||
poly 518 1148 518 1348 2 1351 1 1369 524 1369 537 1356 539 1147 [[Overflow]] | |||
circle 530 107 18 [[Overflow]] | |||
circle 447 1315 21 [[Underdrain]] | |||
</imagemap> | |||
<imagemap> | <imagemap> | ||
Image:Curb extension.png|thumb|700 px|This is an image map of a curb extension, clicking on components will load the appropriate article. | Image:Curb extension.png|thumb|700 px|This is an image map of a curb extension, clicking on components will load the appropriate article. | ||
Revision as of 00:45, 9 March 2018
Hydraulically separated or connected with an underdrain, these are often quite small units of 5 - 50 m2 each. In urban settings the bioretention may be bounded entirely with hardscape, restricting options for pretreatment and sheet flow. Amenity and safety can be enhanced on sidewalks with a short (~ 45 cm wall) for seating, although the finished grade is usually only slightly lower than surroundings. Where underground space permits, shade trees are common feature of these facilities, enhancing the streetscape experience and optimizing transpiration. This type of bioretention is often designed offline, with bypass overflow.
An excellent opportunity for integrating more bioretention into the street is through careful design of curb extensions for traffic control.
Gallery[edit]
Curb extension in Victoria. Image credit Dylan Passmore
'Offline' streetscape bioretention with trees, King Street, Kitchener
Bioretention on residential street, with covered drain inlet (grate in the gutter) and iron grate covered overflow in the centre of the cell, Hinsdale, IL Photo credit: CNT
Curb extension in downtown Indianapolis, IN
Curb extension on Queen Lane, in Philidelphia
Photo credit: PWD
Curb extension with Urban Tree in a tree grate, in city showcased by the U.S Department of Transportation's, Federal Highway Administration.
Photo credit: Jennifer Rosales
Boulevard with Urban Trees along the boulevard in tree grates, in Orlando, FL.
Photo credit: Design by: GAI Consultants/Kevin Aust & Contractor: UCC Group.
Schematic of Urban Trees in tree grates in a proposed traffic-calming bump-out as part of the on Columbus Av. New York City, NY. The red arrow depicts the flow of water to the stormwater tree trench system.
Photo credit: Jonathan Toner
Curb extension with planted tree in open tree pit, part of a finished soil cell system - a tree grate for safety reasons and increased aesthetic should be added. Located on Main St. Markham, ON.
Photo credit: GreenBlue Urban Inc.
