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JAKARTA GREEN BUILDING USER GUIDE
VOL. 6
Landscape MANAGEMENT
The Government of the Province ofJakarta Capital Special Territory
In cooperation with: IFC in partnership with:
c o d e R e q u i R e m e n t s
Land and Water management (LW) LW01 minimum Green open area LW02 permeable materials for Walkways LW03 Rainwater collection system
supporting Facilities (sF) sF01 Bicycle parking and shower
solid and Liquid Waste (sL) sL01 solid/Liquid Waste management system
implementation of construction activities (ca) ca01 Washing Bay for construction Vehicles ca02 noise Restrictions ca03 Bath/toilets for Workers ca04 safety net around Building
conservation of Water during construction (cW) cW01 temporary absorption Wells cW02 Water Reservoir cW03 dewatering plan
management of Hazardous Waste from construction (HW) HW01 Hazardous Waste management
The calculation should be done using the calculator
available on this website
http://greenbuilding.web.id
Checklist for all code requirements lists the required
documents is also available on this website
http://greenbuilding.web.id
table of contents
JAKARTA GREEN BUILDING USER GUIDE
VOL. 6
Landscape MANAGEMENT
I S S U E S & C O D E B E N E f I T S
C O D E R E Q U I R E M E N T01
02
intRoduction
appendix
uRBan Heat isLand
aiR quaLity & poLLution
HaBitat FoR ecosystem
socio-cuLtuRe, aestHetics, & Human HeaLtH
WateR RunoFF
soFtscape
Zoning
Vertical Greenery
Green Roof
Watering
HaRdscape
Previous (or Permeable) Materials
6
7
9
9
9
11
12
12
15
19
20
20
2
25
5
11
4
D E S I G N p R I N C I p L E S03
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Comparison of Green Open Space (m2/person)
in asian Cities1
f I G U R E . 0 1
Urban green open spaces are essential for social, economic and
environmental development of cities. despite being blessed with rich soil and mild tropical climate that supports vegetation, Jakarta’s per capita green area is only 2.3 m2, which is one of the lowest among major asian cities as shown in the graph below.
Jakarta’s green open space has alarmingly decreased over the past 50
years. This is reflected in rapidly reducing green open space targets in
the government’s masterplans from 37% (1965-85) to 14% (2005-10).
LandscapeManagement:An Introduction
1 Siemens asian Green City Index, 2012.
0 40 100 16020 80 14060 120 180
Kolkata
Bangkok
Manila
Tokyo
Karachi
new delhi
Seoul
Bangalore
Taipei
Beijing
nanjing
average
Kuala lumpur
Singapore
Hong Kong
Guangzhou
Osaka
Hanoi
Shanghai
Wuhan
Yokohama
Mumbai
Jakarta
38.6
1.8
3.3
4.5
10.6
17
18.8
23.4
41
49.6
88.4
108.4
43.9
66.2
105.3
166.3
4.5
11.2
18.1
20.9
37.4
6.6
2.3
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Green Open Space in Jakarta
f I G U R E . 0 2
Green Open Space
Built Up Space
Masterplan Targets actual
2030Target
In accordance with the national law2, the Jakarta government has set itself
a target of achieving 30% green open space by 2030. While a part of this
will be achieved through creation of parks and green belts, a significant
increase in privately owned green open spaces is also needed. The
new green building code addresses this issue by mandating a minimum
green open area for new construction. The code also requires the use of
permeable paving materials to decrease site water run-off.
2 law 26/2007 on Spatial Planning and development, which requires each Indonesian city to allocate at least 30% of its territory to become green open space, 20% out of which must take form as public domain.
100
90
80
70
60
50
40
30
20
10
01965 - 1985 1985 - 2005 2005 - 2010 2013
37%
11%14%
26%
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01code requirement
1
2
3
code Requirement 1Minimum natural vegetated area (landscape area, including
green roof and vertical greenery) for new construction
should be as follows:
code Requirement 2All exterior walkways on site should use permeable
materials.
code Requirement 3All buildings must have rainwater collection storage
system (tanks, absorption wells, and absorption pools)
with a volume (m3) equal to 0.05 m x ground floor area.
Absorption wells are not required for sites with the
following conditions:
• Ifthedepthofgroundwateris<=1.5minwetseason;
and/or
• Soilwithpermeability<2cm/hour.
R e F e R R I n G T O a R T I C l e 2 1 . 1
R e F e R R I n G T O a R T I C l e 2 1 . 5
R e F e R R I n G T O a R T I C l e 2 2 . 2 3
n U M B e R O F F l O O R S a B O V e G R O U n d
M I n I M U M n a T U R a l V e G e T a T e d a R e a (% of ground floor area)
less than or equal to 5 floors
Between 6 and 9 floors
More than 9 floors
15%
30%
45%
Please note that this requirement is repeated and
described in more detail in the “Water
Efficiency User Guide”
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due to the rapidly decreasing green cover, the quality of life in Jakarta has deteriorated over the past few decades.
C U R R e n T S C e n a R I Oe x P e C T e d I M P a C T O F G R e e n B U I l d I n G C O d e
limited green open spaces for social gathering interaction and physical recreational activities.
High concentrations of buildings and hardscape such as concrete has caused an increase in Jakarta’s average temperature, resulting in increased air conditioning of buildings.
Concentration of CO2 and other pollutants has increased, causing health issues and productivity losses.
Regional ecosystems have been adversely impacted due to loss of habitat and migratory paths for birds and animals in urban areas.
Reduced area for rainfall absorption into ground, causing erosion, drop in ground aquifer levels and river flooding.
Increased open spaces on private properties for social interaction.
Reduction in average temperature due to increased vegetation.
Reduction in air pollution due to increased vegetation and decreased energy use in buildings.
Urban ecosystems will be partially restored due to increased vegetation.
Increased permeable hardscape area will increase ground water absorption and reduce run-off into rivers.
02 issues & code benefits
The following section describes some of these issues and impacts in
more detail.
Although difficult to quantify, the economic benefits of these code
requirements are expected to be huge. Similar initiatives in Australia have
shown environmental and property value cost benefits at $3.81 for every
$1.00 spent on tree planting and management.3
3 national Heart Foundation of australia, ely M. Building the case for the role of landscaping in urban street design (unpublished). 2012.
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Typical Urban Heat Island effect4
average High Temperatures in and around Jakarta
(1994-2004)5
f I G U R E . 0 3
f I G U R E . 0 4
4 Healthy Urban Habitat, Responding to the urban heat island: optimizing the implementation of green infrastructure. (http://healthyurbanhabitat.com.au/responding-to-the-urban-heat-island-optimising-the-implementation-of-green-infrastructure/)
5 BMG Balai Wilayah II Jakarta, 2006; BMG Bogor, 2006.
oc
33
32
31
30
29
36
35
34
33
32
31
30
29
28
rural suburban residential
commercial city urban residential
park suburban residential
rural farmland
This phenomenon can result in a temperature rise of up to 4oC in urban
areas, and has been largely attributed to the high concentration of artificial
materials such as concrete. Trees are very efficient in controlling the
microclimate by absorbing as much as 80% of the solar radiation falling
on them, thus reducing the heat build-up on the ground. Leaves and soil
release water vapor, which upon evaporation cools the air and surface
temperatures. In contrast, concrete and other man made materials radiate
back most of the absorbed heat, thus causing concentrations of heat.
Urban heat island is the term used for concentration of higher
temperature in cities as compared to surrounding areas.
u R B a n H e a t i s L a n d
area
Tem
per
atu
re (
oC
)
north Jakarta east Jakarta Central Jakarta South JakartaWest Jakarta Bogor
1994
1998
20021996
2000
2004
1995
1999
20031997
2001
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6 Berry & Colls, 1990; Clarke & Faoro, 1966; Reid & Steyn, 1997; Takagi, Gyokusen, & Saito, 1998.
7 Jakarta environmental Management agency, World Bank and The Wall Street Journal.8 World Health Organization. (http://www.who.int/mediacentre/factsheets/fs313/en/)
Besides temperature, urban areas can also have a greater concentration
of pollutants as compared to surrounding areas. Some studies provide
evidence that CO2 concentrations in urban areas can be 5-80 ppm above
adjacent rural areas where extensive plants are growing6.
Air pollution levels have generally followed the GDp growth trends in
Jakarta for the past decade. As shown above the concentration of pM10
(particulate matter smaller 10 microns) is much higher than the WHO Air
Quality Guideline. prolonged exposure to pM10 can cause cardiovascular
and respiratory diseases, as well as of lung cancer. The mortality in cities
with high levels of pollution exceeds that observed in relatively cleaner
cities by 15-20%.8
As seen above, measured maximum air temperature in all regions of
Jakarta have been rising, in some cases by as much as 2oC in less than
10 years. Also interesting to note is the big temperature difference
between Jakarta and Bogor. Despite being close to Jakarta, Bogor’s
maximum temperatures were lower by about 3oC mainly due to its
higher green cover.
As the ambient air temperature in Jakarta has increased, the desired
indoor air temperature has generally gone down, thus drastically
increasing the air conditioning load in its buildings.
Increasing the green open spaces in new building sites will play an
important role in dissipating the Jakarta’s heat island effect, which
will decrease its building cooling requirements. Energy simulation for
six typical building types in Jakarta have shown that 2%-11% of the
total energy consumption can be cut down by just 1oC reduction of
temperature difference between inside and outside.
a i R q u a L i t y & p o L L u t i o n
GdP Growthand air Pollution in Jakarta7
f I G U R E . 0 5
WHO nO2 limit
nitrogen dioxide (nO2)
WHO PM10 limit
PM10
80
60
40
20
0
8
6
4
2
0
Mic
rog
ram
s p
er c
ub
ic
met
er o
f ai
r
an
nu
al Gro
wth
(%)
2006 20092008 20112005 2007 2010
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Introduction of additional trees has been shown to reduce air pollution
and its adverse health impacts. In United Kingdom, presence of trees has
been estimated to save between five and seven deaths and between four
and six hospital admissions per year due to reduced pollution of sulfur
dioxide and pM109. Modeling for London estimates that 25% tree cover
removes 90.4 metric tons of pM10 pollution per year, which equates to a
reduction of two deaths and two hospital stays per year10.
Numerous studies showing health benefits of having gardens in health
facilities have been published11. Results from one such study (presented
below) show the improvement in general perception among patients who
spend time in hospital gardens.
9 Powe, n.a., and Willis, K.G. 2004. Mortality and morbidity benefits of air pollution (SO2 and PM10) absorption attributable to woodland in Britain. J. environ. Manage.
10 Tiwary, a et al.2009. an integrated tool to assess the role of new plantings in PM10 capture and the human health benefits: a case study in london. environ. Poll. 157.
11 Ulrich, Roger, Health Benefits of Gardens in Hospitals, 2002. (http://www.greenplantsforgreenbuildings.org/attachments/contentmanagers/25/HealthSettingsUlrich.pdf)
12 Sustainable Urban landscape Information Series, Healing Garden. (http://www.sustland.umn.edu/design/healinggardens.html)
Benefit of Human Interaction with
Vegetation12
f I G U R E . 0 6
patients perception after spending time in the Garden
component of Garden that Helps patients Feel Better
More relaxed
Trees, Plants, nature
Refreshed
Smells, Sounds, Fresh air
able to think
Place to be alone
Religious connection
Practical Features
Feel better
Views, Texture
Change of mood
%
%
0 4020 60 9010 50 8030 70 100
0 4020 60 9010 50 8030 70 100
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Development of cities causes a disruption of animal and plant habitat
and ecosystem. Some of this balance can be brought back in cities by
having parks and connected corridors. Development of modern Singapore
caused similar disruptions, resulting in the loss of 95% of the city’s
original natural forests. However, over the past 20 years, the city’s green
cover has been increased from 36% to 47%, despite a doubling of its
population. Impact of this initiative has been quite visible. About 500
new species of flora and fauna, like the green tree snail and the long-
legged fly, have been spotted again or have been seen for the first time,
including 100 species new to science.13
Green open spaces are an expression of local culture, social interaction,
recreation, and education. Building properties with sufficient green
open spaces are considered more visually appealing and can sometimes
increase the property value too.
The low proportion of green open spaces in Jakarta has increased the
rainwater run-off into the rivers. This is one of the major reasons for
flooding of rivers on an almost annual basis. High run-off also prevents
replenishment of underground aquifers, thus causing sinking of some
parts of the city. By providing sufficient green open spaces, the chances
of river flooding can be reduced and aquifer depletion can be slowed or
even reversed.
13 an Urban Jungle for the 21st Century. (http://www.nytimes.com/2011/07/29/business/global/an-urban-jungle-for-the-21st-century.html)
14 Ir. anggia Murni IalI GP.
H a B i t a t F o R e c o s y s t e m
s o c i o -c u L t u R e ,
a e s t H e t i c s & H u m a n H e a L t H
W a t e R R u n o F F
Green Open Space as a Place for Relaxation and Recreation14f I G U R E . 0 7
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Comparison of Water Runoff Coefficients
of Various landscape Materials
f I G U R E . 0 8
asphaltGravel
Grass on 1-3% SlopeBrick
Sand
Grass on >10% Slope
Porous asphalt
loam Soil
Grass on 3-10% SlopeClay Soil
Grass on Flat landShrubs
Trees
100
90
80
70
60
50
40
30
20
10
0
95
40
85
75
6560
50
25
3540
45
25
10
Water runoff coefficients shown in the figure above show the significant
difference in the amount of rainwater that is not typically absorbed by
hardscape (asphalt, brick etc.) and softscape (grass etc.). A reasonable
option for areas where hardscape is needed is permeable material such
as porous asphalt and concrete that allows some water to percolate
through to the ground below.
More details on the water run-off and
aquifer are found in the Water Efficiency
user guide.
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A detailed list of vegetation commonly
used in urban landscape is in Appendix A.
03 design principles
this section provides some design principles for complying with the code requirements given above and also describes some best practices that exceed the requirements.
Landscape elements are usually classified as softscape or hardscape.
Softscape typically includes flowers, plants, shrubs, trees, flower beds
and similar live, horticultural elements. Hardscape in contrast, consists
of inanimate objects of a landscape such as roads, walkways, pavers,
stones, rocks, etc.
Efficient softscape includes some or all of these elements:
indigenous plant species: that do not consume too much water.
Groundcover: plants whose height is no more than 0.5 meters, which
bind the soil together and prevent soil erosion. Grass turf does not usually
provide the environmental microclimatic benefits of larger shrubs and
trees, while requiring much higher maintenance. Turf should only be used
in areas where they are required for active use, such as a playground, or
a walking area. for all other softscape areas, shrubs and trees should be
considered.
shrubs: plants with heights less than 50 cm are considered as Bushes,
whereas shrubs have a height of between 0.5-3 m. These plants often
serve as barriers to erosion and noise.
palms: these tree species from tropical climates typically have a tall,
straight, unbranched stem, with a low canopy density, thus making them
less effective in blocking and absorbing solar radiation. If at all used, palm
trees should be mixed with trees of larger canopies.
Bamboo: Similar to palms, bamboos have small canopies and therefore
cannot block much solar radiation. However, they grow fast and can act as
sound, light or pollution screens.
shade trees: are generally with a height more than 6m with a wide and
dense canopy of about 10 m width in a fully grown tree. Shade trees
should be used wherever possible to get optimum microclimatic benefits.
01.02.
03.
04.
05.
06.
S O f T S C A p E1 .
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Zoning refers to grouping vegetation of similar water requirements for
efficient irrigation system. This provides greater efficiency in irrigation and
landscape maintenance.
Vertical garden incorporates plants on the external façade of the building.
It could be done through climbing plants with self-clinging roots growing
directly on coarse building surfaces, cascading plants in roof planters, or
through specialized vertical planter boxes.
A Singapore study, using an air temperature prediction model STEVE,
(Screening Tool for Estate Environment Evaluation), shows that air
temperature in the high density urban areas can be reduced significantly
due to use of vertical gardens.
z o n i n G
V e R t i c a L G R e e n e R y
Types of Vertical Greenery
Impact of Vertical Gardens on air Temperature15
f I G U R E . 0 9
f I G U R E . 1 0
G R e e n W a l l
G R e e n F a C a d e S
With Pots With Rewind Wall
Modular Trails
Grid System
Wire-rope net System
l I V I n G W a l l
landscape Wall
Vegetated Mat Wall
Modular living Wall
minimum estate air temperature without vertical greenery systems
minimum estate air temperature with 100% vertical greenery systems coverage
15 nyuk Hien, Wong. evaluation of Vertical Greenery system. national University of Singapore.
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16 Budiman Hendropurnomo, IaI, FRaIa.17 Ir. anggia Murni IalI GP.
Vertical Greenery at esa Sampoerna Center Building,
Surabaya. PT duta Cermat Mandiri (dCM)16
f I G U R E . 1 1
Types of Vertical Garden17
f I G U R E . 1 2
modular trellis Grid system Wire Rope net system
Landscape Wall Vegetated mat Wall modular Living Wall
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Some examples of vertical greenery are shown in following pictures.
Vertical Greenery by Support System18
Vertical Greenery using a Cassette System19
Vertical Greenery using a Planter System20
f I G U R E . 1 3
f I G U R E . 1 4
f I G U R E . 1 5
18 duta Cermat Mandiri.19 nurina Vidya.20 nurina Vidya.
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Vertical Greenery using a Climber with Planterbox21
examples of Greenery on Terraces and Roofs22
f I G U R E . 1 6
f I G U R E . 1 7
21 Tropica Greeneries.22 nurina Vidya & agus Hariyadi
more information on design and installation of vertical greenery can be found in:Singapore Building Construction authority’s Vertical Greenery Guide (http://www.skyrisegreenery.com/images/uploads/publications/A_Concise_Guide_to_Safe_Practices_for_Vertical_Greenery.pdf)
Green roof is an engineered roofing system that includes vegetation
planted on roofs or terraces, usually in a growing medium above a
waterproof membrane.
G R e e n R o o F
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Green roofs can be classified as “extensive” or “intensive”, based on the
plant type and method used.
I n T e n S I V e G R e e n R O O F e x T e n S I V e G R e e n R O O F
typical vegetation
planting medium depth
additional weight
maintenance
Roof usability
Grasses, shrubs, and trees
Up to 1500 mm
Up to 500 kg/m2
High maintenance
Grasses, groundcover
Up to 150 mm
Up to 150 kg/m2
low maintenance
no activities
Typical Cross Section Built-in-place Green Roof
Typical Cross Section Modular Green Roof
an intensive green roof (left) and an extensive
green roof on the top of a multi-storey car park in
Singapore23
f I G U R E . 1 8
f I G U R E . 1 9
f I G U R E . 2 0
Green roof plants
Green roof plants
Insulation board
Insulation board
Metal decking
Metal decking
drain core/root barrier composite
Roofing membrane
non combustile “no vegetation”zone (18 inches wide at perimeter)
Concrete pavers at perimeter
Growth media retainer
engineered growth media
Green roof modules
23 Harris, elise, Urban agriculture to Increase Food Production in Singapore, 2009. (http://radicalurbanecology.files.wordpress.com/2011/06/urban-agriculture-to-increase-food-production-in-singapore-elise-harris.pdf)
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potential benefits of Green roofs include:
• Rainwater retention: Green roofs retain rainwater, thus reducing run-
off into storm water drains
• Reduction in heat island effect: Green roofs can lower air temperature
in its surroundings through evaporation from soil and plant surfaces.
• increased biodiversity: Green roofs, along with vertical greenery can
partially restore the habitat and migratory paths for birds and insects.
Studies have shown that butterflies can go as high as 20 floors to
access green spaces.
• usable recreation area: Accessible Green roofs provide additional
usable area for recreation and relaxation, which sometimes increases
property value as well.
• Food production: Growing vegetables and herbs on green roofs and
vertical gardens can provide fresh produce to the building occupants at
low costs, even in dense urban areas. If occupants are involved in urban
farming, it can provide social benefits as well.
• Reduced cooling load: Green roofs can significantly reduce roof
surface temperatures through shading, increased surface reflectance
and evaporative cooling effect of plants. A US study showed a 21oC
reduction in maximum average temperature on the Green roof (54oC) as
compared to a conventional roof (33oC), which could reduce cooling load
from 1%-25%, depending on building characteristics24. Obviously, the
potential benefits are higher for buildings that have more area available
for green roofs.
Some of the challenges with Green roofs are:
• Higher first costs: There might be additional costs for constructing
green roofs, to account for the extra load and water proofing
requirements. In addition, there are costs for plants, soil, drainage
system etc. Green roof costs from Singapore (figure below) show an
average USD 100/m2 additional cost for continuous extensive roof and
USD 240/m2 for intensive roof.
additional Cost of Common Green Roofs
in Singapore25
f I G U R E . 2 1
24 Sonne, Jeffrey, evaluating Green Roof energy Performance, 2006, american Society of Heating, Refrigerating and air-conditioning engineers (aSHRae). (http://www.fsec.ucf.edu/en/publications/pdf/FSEC-CR-1659-06.pdf)
25 Mithraratne, nalanie, Greenroofs in Singapore: How Green are They?, Proceedings of SB13 Singapore Conference, 2012. (http://rpsonline.com.sg/rps2prod/sb13/pdf/131.pdf)
Continuous extensive
Intensive
400
350
300
250
200
150
100
50
0
life
Cyc
le C
ost
(U
Sd
/m2 )
Year 0 Year 10Year 5 Year 15 Year 20
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• increased maintenance: It is estimated that around 20% of plants on
intensive green roofs and 10% of the plants on extensive green roof
need to be replaced annually. fertilising, weeding and pruning on Green
roofs need to be done on a regular basis. Modular roofs require the
most maintenance effort, due to the limited useful life of planting trays.
Therefore, maintenance tends to be a significant cost and effort for
green roofs.
• Low roof area availability: Due to the high density and land prices,
most new construction in Jakarta is high-rise. After the mechanical
equipment and water tanks are placed on the roof, typically only a
small part of the roof is available to have a green roof. More green
roof area could be made available by placing the mechanical equipment
somewhere else, and by designing the building to have terraces and
roofs at multiple levels.
more information on design and installation of Green roofs can be found in:Singapore Building Construction authority’s Rooftop Greenery Guide (http://www.skyrisegreenery.com/images/uploads/publications/A_Concise_Guide_to_Safe_Practices_for_Rooftop_Greenery.pdf)
lifetime energy of Common Green Roofs in
Singapore26
f I G U R E . 2 2
3500
3000
2500
2000
1500
1000
500
0
life
Cyc
le e
ner
gy
(GI/1
000m
2 )
100mm Continuous Green Roof 70mm Modular Green Roof 70mm Intensive Green Roof
Initial ConstructionMaintenance
end-of-life disposal
26 Mithraratne, nalanie, Greenroofs in Singapore: How Green are They?, Proceedings of SB13 Singapore Conference, 2012. (http://rpsonline.com.sg/rps2prod/sb13/pdf/131.pdf)
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Irrigation water consumption can be reduced through some of these
options:
automatic irrigationAutomatic irrigation uses system controllers such as rain sensors that
prevent sprinkler systems from turning on during and immediately after
rainfall, or soil moisture sensors that activate sprinklers only when soil
moisture levels drop below pre-programmed levels.
drip irrigationDrip irrigation is made up of flexible polyethylene pipe, usually installed on
the surface of the ground and covered by mulch, with small drip emitters
that are either plugged into holes punched in the tubing or molded directly
into it. Drip irrigation could be controlled by a manual or an automatic
control valve.
Direct application of water into the soil results in little runoff, no spray
drift, and consequently no wasted water or safety problems. Drip
systems are nearly 100% efficient, delivering all the water to the root
zone of the plants in an even pattern throughout the area. fewer weeds
grow in the surrounding soil as it is not irrigated. Installation costs are
comparable to (or lower than) those of a sprinkler system, and operational
water consumption cost is also lower. Drip irrigation systems should be
carefully design and maintained to prevent blockage and breakage.
W a t e R i n G
Soil Moisture Sensors
drip Irrigation System27
f I G U R E . 2 3
f I G U R E . 2 4
Minimum soil depth line
Soil
Sensor pads
Appendix B compares the various types of sprinklers and drip
irrigation systems in more detail.
27 Gardena. Water Your Garden the Smart Way - Save Time and Money (http://www.gardena.com/za/garden-life/garden-magazine/water-your-garden-the-smart-way-save-time-and-money/)
01.
02.
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alternative Water sourcesTo further reduce water consumption, alternative sources of irrigation
such as greywater, reclaimed water, and collected rainwater should be
considered.
Greywater is untreated household waste water from bath room sinks,
showers, bathtubs, and clothes washing machines, whereas reclaimed water
is waste water that has been treated to levels suitable for nonpotable uses.
Use of reclaimed water, rainwater and greywater can substantially reduce
water consumption in most buildings.
more information on high efficiency irrigation systems is available in: efficient Irrigation for Water Conservation Guideline by Queensland Water Commission, australia (http://www.dews.qld.gov.au/__data/assets/pdf_file/0020/33635/efficient-irrigation-guideline.pdf)
This issue is covered in more detail in the Water Management
and Efficiency section of the guidelines.
Efficient hardscape includes some or all these elements:
pervious (or permeable) materials allow water to percolate into the
ground. Impervious hardscapes exacerbate many environmental problems
such as heat island effect, downstream erosion, soil pollution, and water
pollution. They cause stormwater runoff to overwhelm and contaminate
municipal sewer systems, resulting in increased costs for wastewater
management and other municipal services. The results are also damaging
to the natural environment.
There are many types of pervious pavement and construction methods
available in the market to replace asphalt or solid concrete. Generic
pervious materials are listed below.
H A R D S C A p E2 .
p e R V i o u s ( o R
p e R m e a B L e ) m a t e R i a L s
T A B L E . 0 1M a T e R I a l U S e
porous Grass or turf
Gravel Grass
clay Brick
concrete pavers
porous cement concrete
stone
plastic (polyethylene) pavers
porous asphalt concrete
Pedestrian and light vehicular traffic; usually made of plastic geocell material or a perforated concrete grid; while infill is of soil media.
Flexible; functions well in extreme conditions (shrinks and swells easily); often made from recycled materials.
Pedestrian walkways, plazas.
Pedestrian walkways (may sustain traffic loads, but requires careful snow removal procedures).
Parking lots.
Walkways, plazas.
Parking lots, pathways, emergency lanes.
Parking lots, highway shoulders, walkways.
Previous Construction Materials
03.
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for vehicular and pedestrian pavements, pervious concrete, porous
asphalt, and permeable interlocking concrete pavement are feasible
choices.
porous asphalt and other pervious materials cost 10-40% more
than standard asphalt on a unit area basis. This is primarily from the
installation of a filter layer and porous stone bed that is usually deeper
than conventional hardscape bases. However, pervious surfaces
decrease or eliminate the need for detention ponds and significantly
reduce water run-off.
pervious concretepervious concrete is a durable, high porosity concrete that allows water
and air to pass through it. A 25 to 30 cm thick subgrade aggregate base
holds the water until it can soak into the soil.
porous asphalt pavementfast and easy to construct, these are similar to pervious concrete. Water
drains through the porous asphalt and into the stone sub-base and then
infiltrates into the soil. In contrast to pervious concrete, however, the
stone sub-base for porous asphalt is often 45 to 90 cm deep.
01.
02.
Cross Section and Photograph of Pervious
Concrete Construction
Cross Section of Porous asphalt Installation
f I G U R E . 2 5
f I G U R E . 2 6
Previous concretetyp. 5 to 8 in (125 to 200 mm) thick
Stone subbase—thickness varies with design
Optional geotextile on bottom and sides of open-graded base
Optional geotextile on bottom and sides of open-graded base
Soil subgrade
Porous asphalt(75 mm thick)
Bedding course(50 mm thick)
In stone for overflow drainage
Stone subbase—thickness varies with design
Soil subgrade
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permeable interlocking concrete pavementpermeable Interlocking Concrete pavement (pICp) is similar to both
pervious concrete and porous asphalt in infiltration rate, but differs in
that the pavement surface is composed of concrete pavers separated by
0.3 to 1.25 cm wide joints filled with aggregate. The pavers themselves
are not pervious, but the joints between the pavers are, which accounts
for the high infiltration rates. The sub-base stone serves as a reservoir
for water that has filtered through the aggregate-filled joints.
03.
Cross Section of a Permeable Interlocking
Concrete Pavement Installation
f I G U R E . 2 7
Concrete Pavement with aggregate in the
Gaps28
f I G U R E . 2 8
28 Jatmika Suryabrata.
Soil subgrade
Optional geotextile on bottom and sides of open-graded base
Stone subbase—thickness varies with design
4 in (100 mm) thick stone open-grade base
Bedding course 1.5 to 2 in (40 to 50 mm) thick
Concrete pavements min. 3.5 in (80 mm) thick
Curb/edge restraint with cutouts for overflow drainage
aggregate in openings
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Vegetated paving systemVegetated paving system typically used in driveways and other areas
so that water soaks in and is used by plants rather than going into the
gutter. These systems were designed to be used with lawn grasses, but,
can be used with other plants too.
04.
T A B L E . 0 2
COlOR & TexTURe
COSTReCYCled
COnTenT & ReUSeInSTallaTIOn
Surface Cleaning Repairs
M a I n T e n a n C e
comparison of previous paving materials29
pervious concrete pavement
permeable interlocking concrete pavement
porous asphalt
limited range
Wide range
Black or shades of gray
Competitive with permeable interlocking concrete pavement.
Competitive with pervious concrete pavement and porous asphalt; life cycle cost may be lower than these 2 products in some markets.
less expensive than permeable interlocking concrete and pervious pavement.
Generally not manufactured with recycled aggregate or cement substitutes; concrete can be crushed and recycled.
Manufactured units can accomodate cement substitutes; paver can be crushed and reycled.
Generally not manufactured with recycled asphalt or recycled aggregate be crushed and recycled; pavement can be crushed and reycled.
Cast in place; requires formwork; requires seven-day curing period.
Manufactured unit of uniform size, no formwork required, can be mechanically installed, can be use immediately after installation.
Requires no formwork; temperature of the mix is critical to project success; requires 24-hour curing period.
Vacuum-sweep and pressure-wash to remove sediment ad surface debris.
Vacuum-sweep to remove sediment ad surface debris.
Vacuum-sweep and pressure-wash to remove sediment ad surface debris.
damage or highly clogged areas can be cut out and replaced; repaired area needs to cure before use; repaired area will not match original material.
Unit and agregate can be removed, repaired, and replaced; repaired area will match surrounding area.
limited repair potential;can patch with impervious material; repair will not match original material.
29 Interlocking concrete pavement Institute. (www.icp1.org)
Vegetated Paving System
f I G U R E . 2 9
Grass
Topsoil
Turfwave
leveling Sand
Gravel
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High Reflectance Hardscape materialsHigh reflectance hardscape materials are paving materials with high solar
reflectance (albedo), such as light colored concrete. These materials absorb
less solar radiation, thus remaining cooler. Since they do not absorb much
heat, they can be used for reducing urban heat island effect.
more information on “cool pavements” is available in the publication:Reducing Urban Heat Islands: Compendium of Strategies; Cool Pavements by US environmental Protection agency (http://www.epa.gov/heatisld/resources/pdf/CoolPavesCompendium.pdf)
05.
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appendix
L E G E N D
P l a n T C a R e R e Q U I R e M e n T S
P l a n T U S e / C H a R a C T e R I S T I C
P a l M C H a R a C T e R I S T I C
P l a n T H a B I T S
Requireslots of Water
Fan-shaped leaves
Ornamental Foliage
Climbers
Requires Moderate Water
Feather-shaped leaves
Ornamental Flowers
Ferns & allies
Palms
Requireslittle Water
Bipinnateleaves
Fragrant Plant Shrubs
PrefersFull Shade
Simpleleaves
drought Tolerant
Suitable for Seaside Planting
WaysideTree/Palm
aquatic Plant
Bonsai
Indoor Plant
attracts Butterflies
attractsBirds
Cycads
TreesPrefersFull Sun
Cluster
PrefersSemi Shade
Single Trunk
no Trunk
A p p E N D I x A .
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Fruits & Vegetables
Herbs & Spices
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A p p E N D I x A . (continued)
no. BOTanICal naMe
COMMOn naMe
lOCal naMe FaMIlY SOURCeIMaGe
1.
2.
Samanea saman
Mimusops elengi
Rain Tree, Pukul lima, Monkey-Pod Tree, east Indian Walnut
Tanjong Tree, Mengkulah, Mengkulang, Spanish Cherry
Trembesi, Ki Hujan, Saman
Tanjung
Fabaceae (leguminosae)
Private collection
http://arainbrothersnursery.com/images/pictures/full-images/Trees/Mimusops%20elengi,%20Molsiri.bmp
T R e e S
4.
6.
3.
5.
Swietenia mahogany
Khaya senegalensis
Cordia sebestena
Tabebuia argentea
Tanjong Tree, Mengkulah, Mengkulang, Spanish Cherry
Senegal Khaya, Senegal Mahogany
Geiger tree, Sebestens
Mahoni
Khaya
Jati emas
Tabebuia Kuning
Meliaceae
Meliaceae
Private collection
Private collection
http://en.wikipedia.org/wiki/File:Tree_in_new_leaves_I_IMG_6222.jpg
http://www.oramsnurseries.com.au/khaya_senegalensis_africianMahogany.jpg
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A p p E N D I x A . (continued)
no. BOTanICal naMe
COMMOn naMe
lOCal naMe FaMIlY SOURCeIMaGe
8.
9.
Spathodea campanulata
Polyalthia longifolia
african Tulip Tree, Flame of the forest
Cemetery tree, asoka Tree, mempisang
Kecrutan
Glodokan tiang
Private collection
T R e e S
11.
7.
10.
Lagerstroemia speciosa
Filicium decipiens
Bauhinia x blakeana
Rose of India, Queens Crape Myrtle
Fern tree
Hong Kong Bauhinia, Hong Kong Orchid Tree, Butterfly Tree
Bungur
Kiarai payung
Bunga Kupu-Kupu
Meliaceae
Private collection
Private collection
http://zoneten.com/_borders/Filicium%20decipiens.jpg
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A p p E N D I x A . (continued)
no. BOTanICal naMe
COMMOn naMe
lOCal naMe FaMIlY SOURCeIMaGe
14.
15.
Erythrina crista-galli
Hibiscus tiliceaues
dadap Merah
Waru
Private collection
T R e e S
1.
2.
Livistona chinensis
Roystonea regia
Chinensis fan palm, Chinese fountain palm
Cuban royal palm, Florida royal palm, royal palm
Palm sinensis
Palm raja
aracaceae
Private collection
Private collection
P a l M S
13.
12.
Peltophorum pterocarpum
Callistemon citrinus Crimson Bottlebrush, lemon Bottlebrush, Bottlebrush Tree
Yellow Flame, Copper Pod, Rusty Shield Bearer, Batai laut
Yellow Flame
Sikat Botol
Private collection
http://latimesblogs.latimes.com/.a/6a00d8341c630a53ef013480477f22970c-pi
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1.
2.
3.
Bougainvillea sp
Codiaeum sp
Ixora sp
Bugenvil
Puring
Soka
Private collection
Private collection
Private collection
A p p E N D I x A . (continued)
no. BOTanICal naMe
COMMOn naMe
lOCal naMe FaMIlY SOURCeIMaGe
4.
5.
Acalypha macrophylla
Excoecaria cochinchinensis variegata
Teh-tehan
Sambang darah variegata
Fabaceae (leguminosae)
Private collection
Private collection
S H R U B S
7.
6.
Caesalpinia pulcherrima
Nerium oleander pink
Kembang merak
Oleander Private collection
Private collection
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A p p E N D I x A . (continued)
no. BOTanICal naMe
COMMOn naMe
lOCal naMe FaMIlY SOURCeIMaGe
11.
12.
Syzigium oleana
Osmoxylum lineare
Pucuk merah
aralia
Private collection
Private collection
13. Gardenia jasminoides Kaca piring
Private collection
S H R U B S
9.
10.
8.
Ruellia malacosperma
Cordyline sp
Canna sp
Ruelia
Hanjuang
Kana Private collection
Private collection
Private collection
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14.
16.
17.
15.
Hibiscus rosasinensis
Scindapsus aureus
Pseuderanthemum reticulatum
Rhoeo discolor
Kembang sepatu
Sirih belanda
Melati jepang
adam hawa
Private collection
Private collection
Private collection
Private collection
A p p E N D I x A . (continued)
no. BOTanICal naMe
COMMOn naMe
lOCal naMe FaMIlY SOURCeIMaGe
18. Philodendron sp Pilo Private collection
S H R U B S
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A p p E N D I x B .
eFFICIenT IRRIGaTIOn SYSTeM eMITTeRS
exaMPle PaRTICIPaTIOn RaTe
OUTPUT RanGe
exaMPle eMITTeR
exaMPleHow to achieve target 200 (litres per person per day) if all of weekley outdoor water use allocation is used for watering garden or lawn.
Persons per household
2 (700 l) 4 (1400 l)
2 litres/hour to 8 litres/ hour; or 0.03 litres/min to 0.13 litres/min
25 litres/hour to 150 litres/ hour; or 0.4 litres/min to 2.5 litres/min
4 litres/min to 8 litres/min
0.66 litres/metres/min to 1.16 litres/metres/min; or 33 litres/minute to 58 litres/minute for 50 metres
87 emitters for one hour
112 emitters for 15 minutes
17 emitters for 10 minutes
50 metres for 20 minutes
37 emitters for 15 minutes
11 emitters for 10 minutes
50 metres for 12 minutes
22 emitters for 15 minutes
8 emitters for 10 minutes
174 emitters for one hour
224 emitters for 15 minutes
34 emitters for 10 minutes
100 metres for 20 minutes
74 emitters for 15 minutes
22 emitters for 10 minutes
100 metres for 12 minutes
44 emitters for 15 minutes
8 litres/hour
25 litres/hour
4 litres/minute
1.6 litres/hour at 40 cm spacing
75 litres/hour
6 litres/minute
6 litres/minute
125 litres/hour
8 litres/minute
10 mm per hour if spaced 80 cm apart
10 mm per 50 minutes if spaced 2 m apart
10 mm per 10 minutes if spaced 4 m apart
10 mm per 15 minutes for 50 metres
10 mm per 15 minutes if spaced 2 m apart
10 mm per 7 minutes if spaced 4 m apart
10 mm per 15 minutes for 50 metres
10 mm per 10 minutes if spaced 2 m apart
10 mm per 5 minutes if spaced 4 m apart
d R I P P e R S
M I C R O S P R a Y e R
F I x e d S P a R Y e R (Including Pop-up Sprinkles and Gear drives)
d R I P - l I n e P R e S S U R e C O M P e n S a T e d (50 metres)
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A p p E N D I x B . (continued)
eFFICIenT SPRInKleR
OUTPUT RanGe
exaMPle exaMPleHow to achieve target 200 efficient watering of garden and lawn (weekley)
1.18 litres/minute to 6.4 litres/minute
2 x 30 minute periods per week @ 7 litres/minute will use 420 litres.
2 x 30 minute periods per week @ 9 litres/minute will use 540 litres.
7 litres/minute