Jan. 15, 2016

Landscape Professionals Training Series

City of Austin Watershed Protection Department

Lauren Woodward Stanley, AIA

UrbanNature:

Propagating Green Roofs

A focus on practical considerations for

building green roofs, looking at:

•environmental context

•design intent

•practice

•local examples & lessons

•opportunities

from canopy

to watershed

nature in cities . . .

urban heat mitigation

climate adaptation / carbon sequestration

biodiversity (habitat)

water quality (downstream health)

air quality (atmospheric health)

green space, amenity, biophilia

why

A green roof is a living system, married to

architectural structure, that:

tempers

filters

sequesters

metabolizes

enhances

California Academy of Arts and Sciences

Larger (urban) context:

Green roofs are a unique, multi-functioning tool in

the green infrastructure/LID (low impact

development) toolbox which enables buildings to

directly engage with their environment.

Specific (building) context:

As an integrated architectural-biodynamic system,

a green roof enhances a building’s performance,

sustainability, and enjoyment.

why you build them translates directly into what you build and how . . .

Donovan residence Seattle, Wa. LWS

Chicago City Hall

= living sponge

from surface

to support

what

‘green arts’ & ‘gray arts’

goals & intended uses

basis of design

architectural host

extensive or intensive

irrigation

upfront cost, life cycle cost

incentives

Children’s Center, Stuttgart, Germany LWS

‘green arts’ & ‘gray arts’

•integrated system but distinct disciplines and scopes of work

•get the roof right –well-detailed, well-draining, leak-proof

waterproofing layer (TPO, PVC, seamless elastomeric, etc.)

•what other ‘gray’ elements are needed because of the ‘green’ ones?

edging, pavers, borders, irrigation system, monitoring equip., etc.

•‘green’ components generally start with the drainage layer, going up

•consider the gap

roots not used to air layer at interstitial space above membrane -

can heat up and dry out

LBJ Wildflower Center Green Roof trial roof credit: Brian Gardner

0 1'6"3"2"

A4.1

ROOF

DETAILS

SCALE:

DETAIL: TYP. GREEN ROOF HIGH EAVE AND SOFFIT

1 1/2" = 1'-0"1

SCALE:

DETAIL: METAL ROOF / T.O. WALL

1 1/2" = 1'-0"10

SCALE:

DETAIL: TYP. GREEN ROOF LOW EAVE AND FASCIA

1 1/2" = 1'-0"2 SCALE:

DETAIL: TYP. GREEN ROOF RAKE WITH CLERESTORY LOUVER

1 1/2" = 1'-0"3

PTD. WIDE

FLANGE PER

STRUCTURAL

BEAM TO JOIST

CONNECTION

PER STRUCT.

PTD.

CASTELLATED

JOIST PER

STRUCTURAL

STEEL EMBED

PLATE PER

STRUCTURAL

CMU

1" AIR SPACE

3" LIMESTONE

VENEER

3'-6" OVERHANG

FROM END OF STRUCTURE TO F.O. WALL; REF. STRUCT.

6 1

/2"

1-1/8" CDX SHEATHING

16 GA. GALVALUME "Z" SHAPED SILL CAP,

SLOPED 1/4"/FT. AS SHOWN, WITH 1"

OVERHANG OFF FACE OF STONE. ATTACH

TO MASONRY W/ S.S. SCREWS @ 16" O.C.

SLOPE 1/2"

12"

GALVALUME 'Z'

CLOSURE,

COUNTERFLASHING

W/SEALANT PER

ROOF MFR., TYP.

PTD. CASTELLATED

JOIST PER STRUCT.

STL. ANGLE ATTACHMENT

PER STRUCT.

TYP. GALVALUME

REGLET W/SEALANT

PER ROOF MFR., TYP.

PTD. CONTINUOUS PERIMETER

ANGLE PER STRUCT.

4"

LA

P

MIN

.

SLOPE 1/2"

12"

MIN. SLOPE1-3/4"

12"

CONTINUOUS BENT

ANGLE PER

STRUCTURAL

PTD. STL. ANGLE

ATTACHMENT PER

STRUCTURAL

PTD. CASTELLATED

JOIST PER

STRUCTURAL

PTD. CASTELLATED JOIST

PER STRUCT.

PTD. STL. ANGLES AT BTM.

OF JOIST PER STRUCT.

BOND BEAM PER STRUCT.

SCALE:

DETAIL: TYP. ROOF VENT PENETRATION AT TPO MEMBRANE

1 1/2" = 1'-0"6 SCALE:

DETAIL: GREEN ROOF RAKE / WALL

1 1/2" = 1'-0"8

SCALE:

DETAIL: TYPICAL GREEN ROOF RAKE

1 1/2" = 1'-0"4

1/8" PTD. BENT STL. BAFFLES; SLOPE TO DRAIN

TO EXTERIOR

6"

6" x 5/16" PTD. STL. FRAME (BEYOND)

2" x 4" PTD. STL. MULLION PER STRUCT.

SLOPED (5%), 5/16" STL. PLATE

SLOPE T.O. STONE VENEER

SHIM TO SLOPE, SEALANT ALL AROUND, TYP.

5" VEGETATED ROOF MEDIA (BY OTHERS)

1" FOAM LAYER (BY OTHERS)

1/4" J DRAIN DRAINAGE MAT (BY OTHERS)

80 MIL. TPO MEMBRANE ROOFING AND FLASHING DETAILS

3/4" DENSDECK W/ SCREWS AND PLATES PER MFR.

RECOMMENDATIONS W/ 3/4" DENSDECK TOP LAYER

W/ LOW RISE ADHESIVE

STRUCTURAL MTL. ROOF DECK PER STRUCT.

7" LEG, PERFORATED "L" MEDIA EDGE RESTRAINT

PER SPEC.

TYP. SOFFIT

TYP. GREEN ROOF ASSEMBLY

1-1/8" CDX SHEATHING

TYP. FASCIA ASSEMBLY

LIMESTONE VENEER ON CMU WALL

SCALE:

DETAIL: TYP. METAL ROOF AND GUTTER / T.O. WALL

1 1/2" = 1'-0"12SCALE:

DETAIL: METAL ROOF / T.O. WALL

1 1/2" = 1'-0"11

VENT PIPE; REF. MEP

SCALE:

DETAIL: METAL ROOF T.O. PLUMBING WALL

1 1/2" = 1'-0"14

SCALE:

DETAIL: SOFFIT JOINT1 1/2" = 1'-0"9

1/4" ALUMINUM BEAD

REVEAL; REF. SPEC.

BACKSPANNED STL. TUBE

SUPPORT WITH LEDGER

ANGLES BOTH SIDES PER

STRUCTURAL

TYP. TPO ROOF ASSEMBLY

2 1

/2"

TPO FLASHING AND TPO ROOFING;

REF. TYPICAL ROOF

2" x 8" PTD. TUBE HEADER;

ANCHOR TO ROOF DECK

16 GA. GALVALUME "Z"-SHAPED SILL CAP; SET IN

SEALANT, HEMMED AT EDGES; ATTACH TO

MASONRY W/ S.S. MASONRY SCREWS @ 16" O.C.,

TYP. FOR WATERTIGHT RESULTS, TYP.

SCALE:

DETAIL: METAL ROOF / GREEN ROOF / T.O. WALLS

1 1/2" = 1'-0"7

SCALE:

DETAIL: TYP. METAL ROOF VALLEY1 1/2" = 1'-0"13

1" HEM, TYP.

22"

14"

8"

PTD. PURLINS FOLLOW VALLEY,

EACH SIDE, TYP., PER STRUCT.

16" LAP MIN.

6"2"

22 GA. GALV. W-VALLEY

FLASHING PER MFR.

1/8" GALV. CONT. STL. VALLEY

SUPPORT

BOTTOM CLOSURE SET IN

SEALANT PER MFR.; CUT

NEOPRENE CLOSURE APART

AND STAGGER UP VALLEY

100% BUTYL SEALANT STRIP;

CONT. PER MFR.

RECOMMENDATIONS

1"

5"

1"4

"

1'-2"

6" LAP

MIN

TYP. REGLET AND

COUNTERFLASHING

TYP. GREEN ROOF

ASSEMBLY

TYP. REGLET AND

COUNTERFLASHING

MIN. SLOPE1-3/4"

12"

CONT. 4" x 6" x 1/8" WITH 1" RETURN

BOTTOM LEG GALVALUME MTL. ANGLE

SCREWED TO STRUCT. SUPPORT

W/COUNTERSUNK S.S FLATHD. SCREWS

@ 8" O.C. FOR SOLID SUPPORT, TYP.

6" HALF ROUND 24 GA. GALVALUME METAL

GUTTER WITH GALV. MTL. TIES AT 36" O.C.;

REF. SPEC.; SLOPE 1/8"/FT TO DRAIN, TYP.

GALVALUME METAL ROOF SYSTEM;

EXTEND 1" MIN. OVER EXTERIOR

WALL PLANE TO PROVIDE PROPER

DRAINAGE INTO GUYTTERS, TYP.

CONT. BEAD OF TPO

GP SEALANT

BONDING ADHESIVE

TPO MEMBRANE

AS FLASHING

TPO FLASHING

WELDED SPLICE

WELDED SPLICE

TPO MEMBRANE

PE

R M

.E.P

. S

PE

CIF

ICA

TIO

NS

PE

R M

FR

.

RE

CO

MM

EN

DA

TIO

NS

S.S. CLAMPING RING

PER PLUMBING

REQ'S

EXTEND 6"

PAST VENT,

TYP.

DIM PER BOOT MFR.

AND PLUMBING REQ'S

VENT CHASE

CLOSURE STRIPS AT ALL

CORRUGATIONS, SET IN SEALANT

PER MFR., TYP. SEAL ALL HOLES,

FOR WP RESULTS, TYP.

100 % BUTYL SEALANT

AT ALL OPENINGS, TYP.

A

SECTION A

PLAN

TYP. ROOF ASSEMBLY:

TYP. TPO ROOF ASSEMBLY

TYP. GREEN

ROOF

ASSEMBLY

TYP.

GREEN

ROOF

ASSEMBLY

SCALE:

DETAIL: GREEN ROOF AT WALL

1 1/2" = 1'-0"5

CMU WALL;

REF. STRUCT.

TYP. GREEN ROOF

ASSEMBLY

TYP. TPO ROOF ASSEMBLY AND

DETAILS PER MFR.

TYP. FASCIA ASSEMBLY

TYP. REGLET AND COUNTERFLASHING,

SET IN SEALANT

TYP. SOFFIT

PANEL

ASSEMBLY

6"

6"

GENERAL NOTES:

1. TPO ROOFING DETAILS SHALL BE STANDARD FIRESTONE ULTRAPLY TPO, TYP.

2. METAL ROOFING DETAILS SHALL BE AEP SPAN "MINI-V-BEAM" DETAILS, TYP.

3. SOFFIT FINISH SHALL BE 5/16" HARDIEPANEL, PAINTED, WITH S.S. SCREWS WITH 3/4"

ROUND HEADS AND TAMLYN XTREME TRIM, J-MOLD AT EDGES AND 1/4" VERTICAL BEAD

REVEAL AT EXP. JOINTS. REF 2/A1.2 FOR SCREW PATTERN AT SOFFIT, TYP.

4. ALTERNATE DETAIL FOR SOME ROOM CEILINGS: EXPOSED, PAINTED METAL ROOF

DECK PER STRUCTURAL WITH NO HARDIEPANELS OR PLYWOOD SUBSTRATE.

5. 7" TALL GREEN ROOF AND EDGE RESTRAINTS/CURBS SHALL BE STAINLESS STEEL BY

GREEN ROOF SOLUTIONS OR EQUAL, INSTALLED BY MFR. RECOMMENDATIONS, TYP.

6. ALL METAL FASCIA, TRIM, CLOSURE PIECES, ETC. SHALL HAVE PRE-FINISHED KYNAR

500 FINISH ON GALV. 22 GA. MTL., TYP., UNLESS NOTED OTHERWISE. PROVIDE DRIPS,

SEALANT, LAPS, ETC. TO PRODUCE FINISHED, WATERPROOF RESULTS, TYP.

7. PROVIDE CONTINUOUS TRIM AND FLASHING PIECES. TRIM NEATLY AT TERMINATION

PIECES AND LAP ADJACENT PIECES WITH 6" MINIMUM LAPS FOR WATERPROOF

RESULTS, TYP. PROVIDE SHOP DRAWINGS AND SUBMITTALS ON ALL FLASHING AND

TRIM PIECES PER SPECIFICATIONS, TYP.

TYP. FASCIA ASSEMBLY

ALUM. J-MOLD TRIM2x TREATED BLOCKING; REF. SPECS.

1/4" x 1" x 3-1/2" GALV. STEEL

SUPPORTS WELDED TO BEAM AND

BOLTED TO ANGLE @ 16" O.C.

5/16" HARDIEPANEL

1-1/2" x 4" 22 GA. PTD. STL. TRIMTYP. SOFFIT

PANEL ASSEMBLY

5/16" HARDIEPANEL

TYP. SOFFIT PANEL

ASSEMBLY

DRAWING

SHEET

JO

HN

GA

INE

S P

AR

KM

UE

LLE

R S

OU

TH

EA

ST

SW

IM C

EN

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R

27

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AU

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23

4.7.14

2525 S. Lamar #4

Austin, Texas 78704

O: 512-853-9682

E: stefan@pharisdesign.net

www.pharisdesign.net

PHARISDESIGNPLANNING | LANDSCAPE ARCHITECTURE

Tel. (512) 328-0011 Fax (512) 328-0325

221 West Sixth Street, Suite 600

Austin, Texas 78701

2014

TBPE # F-1048 TBPLS # F-10107500

60% CD SET

S A LE Y

copyright modern pools, inc. 2014

po box 29985 | austin texas 78755

512.608.6602 office

512.828.7757 fax

www.moderndb.com

TM

5.30.1480% CD SET

ISSUE DATE

EXPIRES 2.18.15

6.16.14PERMIT SET

TYP. REGLET AND

COUNTERFLASHING W/ SEALANT

FOR WP RESULTS, TYP.

CONCRETE PARAPET

VENT PIPE; REF. MEP

BOOT PER MFR.

SEALANT AND

FASTENERS PER MFR.

TYP. SOFFIT PANEL ASSEMBLY

ALUM. J-MOLD TRIM

ALUMINUM J-MOLD TRIM

S.S. TRIM RING,

TYP.

TYP. REGLET AND

COUNTERFLASHING

CONCRETE

PARAPET

PTD. CONT. STL.

ANGLE W/THREADED

RODS; REF. STRUCT.

PTD. STL. PURLIN;

REF. STRUCTURAL

TYP. METAL ROOF

ASSEMBLY

2"4"

1'-0"

3"

TY

P.

2 1/2"

3 1

/2"

1/2

"

22 GA. PRE-FINISHED FASCIA TRIM;

SEAL TPO FLASHING TO EDGE

PROVIDE PER MFR. RECOMMENDATIONS

6" MIN.

16 GA. BENT GALVALUME

PLATE CLOSURE FASCIA;

COPE TO JOISTS, ETC.

PROVIDE CLOSURE TO

UNDERSIDE OF ROOF PANEL

EXTEND FASCIA 3" BELOW

BOTTOM OF JOIST, FASTEN

TO CMU WALL @16" O.C.

PE

R

PLU

MB

ING

RE

Q'S

CONCRETE PARAPET

TYP. ROOF/

WALL FLASHING

COORDINATE VENT

LAYOUT WITH

FLASHING

REQUIREMENTS

EXTEND ROOF/WALL

FLASHING FOR FLAT

VENT BOOT

INSTALLATION

22 GA. PRE-FINISHED FASCIA

TRIM WITH DRIP EDGE

22 GA. PRE-FINISHED

BOTTOM CLOSURE TRIM

STL. ANGLE PER STRUCT.

ALUMINUM J-MOLD TRIM

CONT. SEALANT

1"

6" GALVALUME

GUTTER

PTD. GALV. STL. OUTRIGGERS

WELDED TO PURLIN AND

ANGLE @ 16" O.C.

REMOVABLE LEAF GUARD

1"6"

SU

PP

OR

T

8" CONC.

PER. STRUCT.

TYP. CLERESTORY LOUVER

TYP. METAL

ROOF

TYP. METAL ROOF ASSEMBLY

SEALANT ALL AROUND, TYP.

ALUM. J-MOLD TRIM

2'-6" OVERHANG FROM END OF

STRUCTURE TO F.O. WALL; REF. STRUCT.

LIMESTONE VENEER ON CMU WALL

TYP. GREEN ROOF ASSEMBLY

TYP. TPO ROOF ASSEMBLY

TYP. TPO ROOF

ASSEMBLYTYP. TPO

ROOF

ASSEMBLY

TYP. TPO ROOF

ASSEMBLY

TYP. CEILING PANEL

ASSEMBLY

PTD. STL. PURLIN

CONCRETE PARAPET WALL

SEALANT ALL AROUND, TYP.

CONCRETE

PARAPET

TYP. METAL ROOF

ASSEMBLY

X-TRED WALKWAY PADS AT

LOW EAVE; REF. ROOF PLAN

6" TYP.

NOTE:

NOT FOR USE WHERE VENT PIPE

MFR. RECOMMENDATIONS FOR HOT

VENTS; REF. MEP DRAWINGS AND SPECS.

ATTACHMENT CLIP TO JOIST

1"

CONT. BUTYL

SEALANT STRIP

1"

4"

1 1

/2"

TYP. CEILING FINISH W/ J-MOLD TRIM

SEAL SOLIDLY ALL

AROUND ALL

PENETRATIONS, TYP.

TYP. FASCIA ASSEMBLY

SELF-ADHERED FLASHING

ALL AROUND, TYP.

1"

1"

3"

SLOPE

GROUT CAPS AT OPENING AND

TOP OF WALL TO SEAL GAP, TYP

SEALANT ALL AROUND, TYP.

GALV. TIES PER SPECS, TYP.

2 1/2"

1 1

/2"

1"

1"

SEALANT ALL AROUND

16 GA. GALVALUME INTERIOR SILL CAP; ATTACH

TO MASONRY W/ S.S SCREWS @ 16" O.C., TYP.

SELF-ADHERED FLASHING, TYP.

GROUTED CELLS AT ALL OPENINGS, TYP.

3"

PROVIDE 16 GA. PTD. GALV. TRIM

AT ROOF DECK IN AREAS WITHOUT

HARDIEPANEL FINISH,TYP. COPE

TO CLOSE OFF GAPS, HEM EDGES,

@ 16" O.C., TYP.

credit: :Stanley Studio

goals & intended uses

basis of design

•why is a green roof desired specifically?

•what are its purposes?

•emphasis on low inputs (organics, water. maintenance)?

•emphasis on maximizing physical performance?

•emphasis on common good (urban) or private (bldg) benefit?

•what kind and how much access? use as amenity?

•two approaches: less is more and more is more

both (Hyundai and Cadillac) are valid options

•low input scenario: less resource use, less cost, less performance

•high input scenario: more resource use, more cost, more performance

•establish goals before moving to design

Stanley Studio photo credit Marsha Miller

Denver Botanical Garden

architectural host

extensive or intensive

irrigation

•new or retrofit? are there architectural drawings if the latter?

•structural limits are often at the foundation level rather than roof

•parapet roof or shed roof – both require adequate drainage at edge

•walk surface over and around green roof – protect roof membrane

•depth of green roof system determines the plant palette options

•generally, the deeper the media, the taller the species

•shallow extensive systems and porous media dry out quickly

•irrigation is generally needed for plant establishment, about a year

•relying principally on collected rainwater or HVAC condensate takes

green roof watering out of potable (municipal) demand

Brooklyn Grange Urban Farm

berm roof credit: LBJWFC website

upfront cost, life cycle cost

incentives

•green roofs are not a low budget roof choice

•not easy to calculate cumulative payback

•value arises from a matrix of interconnected benefits

•variables fluctuate since it’s a living system, makes metrics hard

•some attributes are quantifiable (stormwater retention)

others do not lend themselves to consistent data

(thermal insulation varies per season and moisture content)

•real estate value of green roof views from above (higher rents)

•must avoid becoming a liability; design for longevity and flexibility

•incentives in Austin, at this moment, are not explicitly financial -

density bonus option in certain districts (greater FAR)

part of option to discharge stored rainwater (green roof irrigation)

green building credits like open space provision rating points

Dell Childrens Hospital TBG Partners

credit: Ecoroofs Everywhere

from plan

to construction

how

team players

proprietary system vs. assembled components

monolithic vs. modular

architectural & ancillary conditions

trifecta: growing media, vegetation, moisture

surface variegation

installation

maintenance

auxiliary systems: water, solar

local resources

team players

•team may include:

owner, architect, landscape architect, structural engineer, green

roof professional, roofing consultant, irrigation consultant, general

contractor, growing media supplier, grower, various component

suppliers

•project lead or architect well-suited to manage project from design to

implementation since there is significant coordination

•good idea to meet early and regularly through design and planning

•draw from local providers where possible

•roofers with familiarity and experience with green roofs are preferable

LBJWFC green roof trial plot

Stanley Studio

proprietary system vs. assembled components

•pros and cons, each – one full package, one DIY

•how is local expertise figured in?

•how are local/regional materials included?

•access to knowledge - nuts and bolts of system components

•flexibility to customize and revise details, materials, timing

•experimentation with plant species over time

•cost, warranties

Stanley Studio

Ballard Library Seattle, Wa.

monolithic vs. modular

•monolithic = a blanket: one continuous entity

shares moisture, microbes, fungi, nutrients, root space

growing media and plants installed sequentially

•modular systems are compartmentalized

provides pre-established vegetation in growing matrix

greater control of final install look

ease of tray placement and removal if necessary (in concept)

soil biology, moisture not shared across dividers

modular trays photo credit: LiveRoof

Chicago City Hall

architectural & ancillary conditions

•minimal roof slope for adequate drainage (even for “flat”)

•vents, drains, other roof penetrations need border (offset vegetation)

•roof perimeter type (parapet, shed) affects drainage, sightline

•access to and over (walk-out on level, ladder, pathways)

•deck, furnishings, shelter

•HVAC equipment can be a large presence - heavy, noisy, cast

shadows, requires clearances

•irrigation system (hose bib?, pipes, controls, pumps)

•these conditions can whittle the green roof real estate down

Lovejoy Block 2 Portland, Or.

trifecta: growing media, vegetation, moisture

•characteristics are correlated – design for this (or roof will

retroactively)

•baseline concern: keeping plants alive, healthy, performing

•degree of evapotranspiration sought? (more ET = more cooling)

•succession: allow plant regime to evolve over time?

•weeds are inevitable; can be seen as pioneer species in low

maintenance roof

•greater initial (mature) plant coverage minimizes weed introduction

•seeding yields effective coverage if tended; economical

•low-depth growing media is typically structured and inorganic;

designed to be lightweight and well-draining, doesn’t hold water and

nutrients long

•shallower slopes allow for longer lateral hydraulic movement

•deeper media more closely approximates at-grade conditions, can be

more organic and hold water longer

•canopy plants may create rooftop microclimates or zones

image credit: Roofscapes Inc.

woven polypropylene drainage mat

surface variegation

•rockscapes and rubble roofs predicated on volunteer plant species

•nurse logs and other natural elements

•mounding of soil can create lee sides

•mulching tiles - trap moisture, seed, provide protection

•enhanced habitat, hydrologic character, biological activity

Well house, Medina, Tx. credit: Dave Williams

Rubble roof Hackney, UK

mulching tiles – Prairie Design Stanley Studio

installation

(primarily for non-proprietary systems)

•coordination should begin during design

key and secondary parties (roofer, irrigation sub, etc.)

•align schedules of gray and green

seasonal planting is best but is tied to roof completion

growers will need to plan for readiness of plants

•insist on pre-construction meetings for optimal coordination of parties

•method for mixing media, staging media and plants, and lifting media

and plants to roof mapped-out?

•allow time for all inspections (notably roof manufacturer, for warranty)

seams in membrane must be fully welded, inspected, repaired

•leak detection testing or simply flooding is good practice

•many roof warranties will assume overburden waiver (owner incurs

cost of removing overburden if needed)

John Gaines Park (Mueller SE Swim Center) Stanley Studio

maintenance

•maintenance standard high or low? influenced by:

desired aesthetic, degree of performance (ET, property value)

•generally more needed for intensive systems than extensive

•maintenance regime may include:

watering

weeding

thinning, pruning

(re-) seeding or planting

fertilizing

inoculating (such as mycorrhizal)

•fertilizing and inoculating is less effective in extensive roofs (leach)

•who does it? ownership

•good practice to provide maintenance manual – include species list

•ideal to keep a log to record history, main activities

•monitoring? partnering with other organizations for data collection

•be open to succession and migration of species over time

Butterfly weed, Stanley Studio credit: Marsha Miller, UT

auxiliary systems: water, solar

•water path: avoid discharge into storm sewer

rainwater collection and distribution

at-grade landscaping

rain garden

water feature

artistic treatment of gutters, scuppers, downspouts

•rainwater system as part of closed-loop irrigation

•HVAC collection (co-mingle with rainwater?)

•photovoltaic panel array

over vegetation: Germans lead the way

proximity (adjacent but not over)

synergy – panels shelter plants; plants cool panels

armatures, structure, attachment need to be designed

Singing Sands residence credit: Jones Studio

MTZ Munich, Germany credit: ZinCo

John Gaines park (Mueller SE Swim Center) Stanley Studio

Duke Univ. Environment Hall Payette

Stanley Studio

local resources

Green Roof Advisory Group

•initiated by City Councilmember Riley, 2009

•looked at current state of knowledge, incentives, and credits

•5-year implementation plan establishes framework for goals, progress

•Report to Austin City Council Oct. 2010

https://www.austintexas.gov/department/green-roof (2010 Report link)

•Report on Extension Resolution

https://www.austintexas.gov/department/green-roof (2011 Report link)

local resources

Lady Bird Johnson Wildflower Center (Ecosystem Design Group)

•trial roof research plot compared standard to cool to green roofs for

surface and soil temperature data, runoff, etc.

•affiliation with University of Texas

•showcase projects on WFC campus

•consultation and design on other projects

•EDG developing growing media formula for trademark

roof trial LBJWFC

kiosk LBJWFC

local resources

GRoWERS (Green Roofs: Working Expertise & Regional Solutions)

•started 2007 (not currently very active)

•nonprofit networking and advocacy group

http://www.growersaustin.com/

Pecan Springs Bus Shelter credit: Alejandro Moreno