View
228
Download
0
Embed Size (px)
Citation preview
8/9/2019 Green Streets - A Conceptual Guide to Effective Green Streets Design Solutions
1/7
Green
reserve The American Recovery and Reinvestment Act (ARRA), Green Reserve o 2009, through the State Revolving Fund,
provides unding or a wide variety o qualiying projects in the categories o: green inrastructure , energy efciency,
water efciency, and other innovative projects. For more inormation on ARRA, to fnd out i your current or uture
planned project meets the necessary criteria, and how to apply, visit www.Recovery.gov.
Green Streets
Stts s a sgat tag
b w a st ts, a
ths a q tt t aag
ta ts. A G Stt ss a
ata ssts aah t stwat
w, wat qat, ba
hatg, ha sta sat,
ab tts, a bat ghbhs.
Thgh as bats ats a
ss, ths bjtsa sa ths
a b t t ts stts
a sttgs. G Stt ats
gtat b tss, swak ats,
asa as, gtat swas,
ab ag, a stt ts. Ths g
s a w t statgs that
a b tastat ghts--
wa at th a ghbh sa.
A Green Streetis a street that usesnatural processes
to managestormwater runo
at its source.
A concepTuAl Guide To
eecTive Green STreeTS
deSiGn SoluTionS
Residential Streets
Commercial Streets
Arterial Streets
Alleys
Green Street designs provide better environmental
perormance while creating attractive, saer environments.
Green Streets
8/9/2019 Green Streets - A Conceptual Guide to Effective Green Streets Design Solutions
2/7Green
reserve
Green Streets www.Recovery.gov
Residential Streets
Stormwater curb extenSionS
Conventional landscape
SidewalkStreet tree
Vegetatedcurb extension
Two-way car travel
20 minimumthrough zone
On-street parking
Optional: Existing curb and plantingstrip can be retained as is or
incorporated into curb extension
Conventional curb extensions(also known as curb bulb outs,chokers, or chicanes) havebeen used or decades to
enhance pedestrian saety andhelp in trac calming.
A stormwater curb extensionsimply incorporates a raingarden into which runo fows.
-
-
implemenTATion
opporTuniTy
TypicAl STreeT
ResidentialStreets
Stormwater curb extenSionS
Permeable Paving
vegetated SwaleS
rsta stts th gatst tta
bg G Stts w ghbhs
tttg stg stts bas th stts
a ta sw, ss tafk, a k t
aa ha s asa ts.
Ths as, t s a hs t haa gas at t th asag t
t a st stwat ts,
was, a ats. ra ga s th ga
t s t sb stwat statgs that
s ats a ss t t, absb, a sw
awat th asa sa.
Sa ts a gas a tak as s
wth th stt ght--wa tsth gs
th stt a b bt t aw stwat t w
t a asa aa, sa wth th a
aa th stt a b t t asa,
asg abt. Ata, ab
ag that s ab, a-bag, a bt wth
a g s a ta st wat
t tat.
i w stt stats, G Stts
a b sg t ha sgat s
wat. i tt stats, th a taha a th a sa sts, wh
ss wat ag sts a w t
stg st sw ssts.
Rain gardens are beautiullandscape eatures that
naturally lter runo andrequire less maintenance
than tur grass.
8/9/2019 Green Streets - A Conceptual Guide to Effective Green Streets Design Solutions
3/7
Green Streets www.Recovery.gov
Residential Streets
Permeable Paving
Conventionallandscape
Pervious pavers
Concrete band,flush with pavers
Sidewalk
On-street parking
Existing driveway
Travel lane allows onecar to pass while the cartraveling in the oppositedirection waits in theparking zone
Permeable paving (pavers,or porous asphalt andpervious concrete) in theparking lane convertsimpervious suraces to allow
stormwater to absorb into theground, which reduces theamount o runo without anyloss o parking on the street.
The aesthetics o permeablepaving can also give theillusion o a narrower streetand thereore help calm trac.
implemenTATion
opporTuniTy
exiSTinG
vegetated SwaleS
On-street parking on oneside of the street only
Vegetated swale on oneside of the street
A mid-block pedestrianaccess point providesaccess to the sidewalkon the other side of thevegetated swale
Two-way car travel
Sidewalk
Street tree
Swales are long, shallowvegetated depressions, with
a slight longitudinal slope.As water ows through theswale, it is slowed by theinteraction with plants andsoil, allowing sedimentsand pollutants to settle out.Water soaks into the soil andis taken up by plants, andmay infltrate urther intothe ground i the soil is well-drained.
implemenTATion
opporTuniTy
exiSTinG
Green
reserve
8/9/2019 Green Streets - A Conceptual Guide to Effective Green Streets Design Solutions
4/7
Green Streets www.Recovery.gov
Commercial Streets
CommercialStreets
Stormwater PlanterS
Stormwater curb extenSionS
Permeable Paving
ca stts st ba aas t
aat a w ag ss a ss
g stas, s, bks, tast
s, -stt akg, t satg,
ghtg, ts, t. Bas a ths as,
g sa t t a aag stwat
a at st aa hagg. Th a,hw, sa sg ts that tws a
ts a s wh tgatg stwat
agt t th st at stts.
Th k s thkg at g sa
that a aat t ss
sa, sh as a stt t t sg t t
, th b tss (as kw as
sta bb ts) at th s sg
t g ssg stas stas
that a as ta a a ga. Ths sg
ts a as aat w
stts wh th at g
tts s s th stat. m
statg sg s ssa stts wth
stg tts. Th a- ths ts,
thgh, s a attat, wakab stt
that sab s t .
Stormwater PlanterS
Bicycle lane
Building frontage
Pedestrian egress zone
On-steet parkingConventional landscape
Reducedpedestrian
crossingdistance
Two-waycar travel
Sidewalk
Street tree
Stormwater planter
Stormwater entry/exitcurb cut
Planters are long, narrow land-scaped areas with vertical wallsand at bottoms, typically opento the underlying soil. Theyallow or more storage volume
than a swale in less space.
Water ows into the planter,absorbs into the plants andtopsoil, flls to a predeterminedlevel, and then, i necessary,overows into a storm sewersystem. I desired, planters canaccommodate street trees.
-
-
implemenTATion
opporTuniTy
TypicAl STreeT
Green
reserve
A communitys identity isoten most evident on its
commercial streets.Green Street techniques notonly achieve environmental
goals but can greatlyimprove the look and eel
o a community.
8/9/2019 Green Streets - A Conceptual Guide to Effective Green Streets Design Solutions
5/7
Green Streets www.Recovery.gov
Stormwater curb extenSionS
implemenTATionopporTuniTyexiSTinG
Permeable Paving
Bicycle lane
Pervious paversOn-steet parking
Sidewalk
Street tree
Stormwater curb extension
Concrete band,flush with paving
Shortercrossingdistance forpedestrians
Two-waycar travel
Permeable paving oncommercial streets can be
incorporated into sidewalksand parking lanes.
Recent advances in permeablepaving technologies nowmake many appropriate orhigher speeds or where large,heavy vehicles are expectedto be parkedareas such asloading zones and bus stops.
-
-
implemenTATion
opporTuniTy
exiSTinG
Commercial Streets
Building frontage
Stormwater curb extensionPervious pavingAngled parking
Sidewalk
Street tree
Shortercrossing
distance forpedestrians
Two-waycar travel
Stormwater curb extensionson commercial streets aresimilar to those on residentialstreets. They are rain gardenstypically located near the
corners that can also providethe pedestrian with a morecomortable crossing.
Curb extensions can alsobe located mid-block byconverting one or moreparking spaces.
Green
reserve
8/9/2019 Green Streets - A Conceptual Guide to Effective Green Streets Design Solutions
6/7
Green Streets www.Recovery.gov
Arterial Streets
ArterialStreets
vegetated SwaleS
Ata stts tws a ts a
t haatz b w ass
at, tt g, a tt t ass
sta s. Sh a ata stt
aa ha asa aas ajat t
th awa wth gass as, th
tttg ths aas t aatawat w sgat
a h tt wat qat.
Wh ajat asa sa s t
st, a ss a tg a b
tak. Ths s tg jst
hw h a sa s ssa t
sa aag ta, a hw h a
b t t g sa. i at t
aagg , ths s as a tt
t tt th tat ata
stts, akg th t-a b
atg swaks, -stt bk as,
asa-saat bk gwas.
Aga, as wth sta a a stts,
thgh t s as t a a sg a ths
ss t a awa th bgg, st
atas st tts t atG Stt ats, a a b hgh sss.
Busy arterials neednot only be a conduitor trafc. They have
the potential to beattractive, green
boulevards that reduceruno and reinorce acommunitys identity.
vegetated SwaleS
Bike lane
Side swale
Street trees
Sidewalk
Like residential streets, arterialroadways are good streettypes or swales because theytypically have long, linearstretches o uninterrupted
space that can be usedto manage stormwater.
Some arterials may not havelandscape space in placebut do have travel lanes orpaved shoulders that can benarrowed to create space orswales.
implemenTATion
opporTuniTy
TypicAl STreeT
Green
reserve
8/9/2019 Green Streets - A Conceptual Guide to Effective Green Streets Design Solutions
7/7
Green Streets www.Recovery.gov
Al leys
Alleys
Permeable Paving
vegetated SwaleS
i a tws a ts, as s a
sgat at s sa a
a sts t g bas th
a t t t t th sw sst.
G Stt thqs k gtat swas
a ab ag t a
tat , aat g, a a a sss tha stag ts t sws.
vegetated SwaleS
I the alley is crowned in sucha way that water ows to theside, then stormwater can beaccommodated by simplygreening edges o the alleywith swales and planters.
I necessary, water canow through pipes orcovered trenches to allowvehicle access to garagesand driveways.
implemenTATion
opporTuniTy
TypicAl Alley
Alleys are the low-hangingruit o Green Street
designa good startingpoint or towns and cities
to begin incorporatingstormwater management.
Permeable Paving
Alleys are typically low-speedand low-tracked streets andthereore suitable locationsor using permeable paving.
The entire surace could bepermeable, or i heavier vehiclesare anticipated or loadingand unloading, or the alley isreversed crowned (slopingtoward the center line), thenonly the middle section needsto be permeable.
implemenTATion
opporTuniTy
TypicAl Alley
Greenreserve
Illustrations and photographs used in this brochure are rom the EPA publication
Stormwater Management HandbookImplementing Green Infrastructure in Northern Kentucky
Communities and were created by Nevue Ngan Associations o Portland, Oregon.
This handbook, as well as other valuable resources, are available at both
www.epa.gov/smartgrowth and www.epa.gov/greeninrastructure.
EPA-833-F-09-002 | August 2009 | www.epa.gov/greeninrastructure