County of Albemarle Greenroof

1
County of Albemarle Greenroof
County of Albemarle Greenroof
Mark Warner, Governor Tim Kaine, Lt Governor
2
County of Albemarle Greenroof
County of Albemarle Greenroof
Mark Warner, Governor Tim Kaine, Lt Governor
3
Frequently asked questions. Load Issues and
Engineering Leaks!!!!???? How Much? Are you
for real?
County of Albemarle Greenroof
4
Above April 5, 2005 satellite photo of Chesapeake
Bay watershed courtesy NASA, MODIS Rapid Response
at GSFC
County of Albemarle Greenroof
5
Random Title
County of Albemarle Greenroof
6
How do we make roofs green?
County of Albemarle Greenroof
7
Random Title
?
County of Albemarle Greenroof
8
County of Albemarle
Greenroof Plan
9
County of Albemarle Green Roof
Process
10
County of Albemarle Green Roof
Process
11
County of Albemarle Green Roof
Process
12
County of Albemarle Green Roof
Process
13
County of Albemarle Green Roof
Process
14
County of Albemarle Green Roof
Process
15
County of Albemarle Green Roof
Process
16
County of Albemarle Green Roof
Process
17
County of Albemarle Green Roof
Process
18
County of Albemarle Green Roof
Process
19
County of Albemarle Green Roof
Process
20
County of Albemarle Green Roof
Process
21
County of Albemarle Green Roof
Process
22
County of Albemarle Green Roof
Process
23
County of Albemarle Green Roof
Process
24
County of Albemarle Green Roof
Process
25
County of Albemarle Green Roof
Process
26
County of Albemarle
Greenroof Plan 9,000 sq. ft.
Greenroof Plan
27
County of Albemarle Green Roof
Process
28
County of Albemarle Green Roof
Process
29
County of Albemarle Green Roof
Process
30
Random Title
What do green roofs do?
County of Albemarle Greenroof
31
Random Title
County of Albemarle Greenroof
32
Random Title
County of Albemarle Greenroof
33
Random Title
your Moment of Zen
County of Albemarle Greenroof
34
Random Title
WORKHORSE?
County of Albemarle Greenroof
35
(No Transcript)
36
(No Transcript)
37
Greening Roofs Why should we? What Greenroofs
Improve Where Greenroofs can be used How they
are constructed
County of Albemarle Greenroof
38
How do we make roofs green? What are the
costs? What is saved? Who can implement a
greenroof? The State of Green in the Old Dominion
County of Albemarle Greenroof
39
How do we make roofs green? Greenroof
Education Identify and Quantify
Possibilities Understand Costs Advocate Find
Funding
County of Albemarle Greenroof
40
How do we make roofs green? Greenroof
Education Identify and Quantify
Possibilities Understand Costs Advocate Find
Funding
County of Albemarle Greenroof
41
How do we make roofs green? Greenroof
Education Identify and Quantify
Possibilities Understand Costs Advocate Find
Funding
County of Albemarle Greenroof
42
How do we make roofs green? Greenroof
Education Identify and Quantify
Possibilities Understand Costs Advocate Find
Funding
County of Albemarle Greenroof
43
How do we make roofs green? Greenroof
Education Identify and Quantify
Possibilities Understand Costs Advocate Find
Funding
The Energy Policy Act of 2005 3.7 billion for
activities dedicated to energy efficiency and
conservation, including establishment of a
building performance initiative, authorization of
150 million in competitive grants for energy
efficiency initiatives, including green roofs,
and more.
County of Albemarle Greenroof
44
How do we make roofs green? Greenroof
Education Identify and Quantify
Possibilities Understand Costs Advocate Find
Funding
The Countys funding came from the EPA through
the Virginia Department of Conservation and
Recreation. The Commonwealth received 400,000 in
2004.
County of Albemarle Greenroof
45
Think outside the box (and above the rafters) in
your local community.

County of Albemarle Greenroof
46
What greenroofs improve.
The Chesapeake Bay
47
What greenroofs improve.
Sediment can smother benthic (bottom-dwelling)
plants and animals, such as oysters and clams.
Suspended sediment clouds the water, preventing
light from penetrating to the leaves and stems of
underwater grasses, or submerged aquatic
vegetation (SAV). High concentrations of toxic
materials also may be present in sediment, which
further contaminate waterways. Sediment carries
excess nutrients, particularly phosphorus, into
Bay waters, compromising water quality.
Accumulations of sediment can clog waterways and
ports, making traffic difficult or hazardous, and
requiring dredging.
The Chesapeake Bay
48
What greenroofs improve.
Sediment can smother benthic (bottom-dwelling)
plants and animals, such as oysters and clams.
Suspended sediment clouds the water, preventing
light from penetrating to the leaves and stems of
underwater grasses, or submerged aquatic
vegetation (SAV). High concentrations of toxic
materials also may be present in sediment, which
further contaminate waterways. Sediment carries
excess nutrients, particularly phosphorus, into
Bay waters, compromising water quality.
Accumulations of sediment can clog waterways and
ports, making traffic difficult or hazardous, and
requiring dredging.
The Chesapeake Bay
49
What greenroofs improve.
Air Quality
50
What greenroofs improve.
Energy Demand
51
What greenroofs improve.
Energy Demand
52
Why should we construct greenroofs?
Just as trees and other plantlife clean air by
making use of airborne carbon, greenroofs do the
same thing recycling harsh roof microclimates
into living, breathing places.
53
Energy Consumption and Dependence
54
What greenroofs improve.
Energy Waste
55
Why should we construct greenroofs?

• Our Energy comes with Costs.

56
When we increase efficiency.

• We create real and long-term

57
ADAPTABILITY, VALUE, ECOLOGY and STABILITY
Greenroofs allow buildings to require and demand
less engergy. They make buildings less of an
energy hog
58
COUNTY DATA COLLECTION
Once the roof is established, the portion with
the green roof system will be monitored and
measured during an extended period and compared
to a similar, non-greened portion of the roof.
Mike Stumbaugh, Director of General Services
will use digital thermometers attached to micro
computers (called HOBOs) to measure and record
the changes in temperature from inside and out.
Coefficients of energy transfer will be used to
determine what the roof is doing.
Energy hog?
59
COUNTY DATA COLLECTION
This will allow us to understand exactly how much
energy is conserved. County employees are certain
to hear a little less rumbling of air handlers
and chillers. County residents should not expect
their taxes to plummet as a result of our
increased efficiency, but over the life of the
roof, it will conserve energy that continues to
be more costly.
Similar studies will look at water quantity and
quality after the roof is complete.
60
What greenroofs improve.
Flashiness in streams and waterways.
61

• Every Piece of green infrastructure

Creates a measured improvement.
62
What greenroofs improve.
Urban Heat Island Effect
63
What greenroofs improve.
Urban Heat Island Effect
HEALTH ISSUES
64
What greenroofs improve.
Air Quality
HEALTH ISSUES
65
What greenroofs improve.
Heat and Microclimate
HEALTH ISSUES
66
What greenroofs improve.
Food
HEALTH ISSUES
67
What greenroofs improve.
Well being
Food
HEALTH ISSUES
68
What greenroofs improve.
Habitat
69
What greenroofs improve.
Habitat
70
Habitat
71
Water Quality Plants and soil medium filter
airborne pollutants. The Department of Energy is
providing grant funding for greenroofs.
Greenroofs filter phosphorous and nitrogen, among
others from rainwater. and decrease the energy
(and therefor, pollution) required to keep us
comfortable.
County of Albemarle Greenroof
Pennsylvania State University Center for
Greenroof Research www.//hortweb.cas.psu.edu/rese
arch/greenroofcenter/research.html
72
Water Quality Phospherous and nitrogen are
bi-products of current regulations on coal and
other fossil fuel powered energy plants. In urban
areas, these airborne nutrients do not have an
opportunity to be cleaned through the natural
cycle as they would in more natural areas.
County of Albemarle Greenroof
Charlottesville
73
Water Quality Plants and soil medium work to
neutralize acid rain.
County of Albemarle Greenroof
Pennsylvania State University Center for
Greenroof Research www.//hortweb.cas.psu.edu/rese
arch/greenroofcenter/research.html
74
Water Quality Greenroofs have the ability to
remove and fitler phospherous, nitrogen, and
potentially mercury. These are all bi-products of
the department of energys current regulations on
coal and other fossil fuel powered energy plants.
County of Albemarle Greenroof
75
Water Quality Greenroofs have the ability to
remove and fitler phospherous, nitrogen, and
potentially mercury. These are all bi-products of
the department of energys current regulations on
coal and other fossil fuel powered energy plants.
County of Albemarle Greenroof
76
Water Quantity On average, across the United
States, green roofs are shown to retain 50-70 of
water from rainfall events. Peak runoff flows are
reduced up to 85. These peak runoff flows are
responsible for the most severe erosion along our
rivers and streams. After full saturarion, a
greenroof will release rain in excess of one
inch, on average.
County of Albemarle Greenroof
Shencks Branch
77
County of Albemarle Greenroof
Shencks Branch
78
Shencks Branch
County of Albemarle Greenroof
79
County Office Building Roof Projected
Performance
County of Albemarle Greenroof
80
Where can greenroofs be used?
restaurant
airport
County of Albemarle Greenroof
81
Where can greenroofs be used?
restaurant
airport
Legistlative Building, Raleigh, NC
County of Albemarle Greenroof
Pennsylvania State University Center for
Greenroof Research www.//hortweb.cas.psu.edu/rese
arch/greenroofcenter/research.html
82
Where can greenroofs be used?
County of Albemarle Greenroof
83
New Target Store, Chicago, IL
County of Albemarle Greenroof
84
Residential Application
85
Residential Application demo
86
Residential Application roofboards
87
Residential Application waterproofing
88
Residential Application Drainage Layer
89
Residential Application Soil Medium
90
Residential Application Soil Medium
91
Residential Application Planting
92
Residential Application Full Establishment After
Two Years /-
93
Who can implement a greenroof?
County of Albemarle Greenroof
94
Local Government
95
Costs
Costs for greenroof systems begin under 10 per
square foot... An extensive greenroff, such as
the one growing on the County Office Building is
the least expensive. Extensive greenroofs are not
meant to be an active space. They are limited
access and are to serve no greater function than
those previously mentioned. An Intensive
greenroof anticipates uses for relaxation and
reflection and involve larger plants, deeper soil
medium, and frequent use. Generally Extensive
roofs range between 5-15 per square foot for
system alone. As with any product that has more
to offer, intensive green roofs cost out higher,
but are still cost-effective.
County of Albemarle Greenroof
96
State of Green in the Old Dominion Arlington
County has a two-year old green roof located near
Courthouse Metro. The City of Alexandria is
preparing to install the largest greenroof in the
Commonwealth 10,756 square feet.
97
Other smaller projects have been completed or are
in the works at - James Madison University -
Fairfax County - Arlington County - Alliance
for the Bay, Richmond Area - Downtown Greens
Community Garden in Fredericksburg
County of Albemarle Greenroof
98
THOUGHTS and
County of Albemarle Greenroof
99
QUESTIONS?
County of Albemarle Greenroof