Fin-Water Efficiency
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rainwater can be collected and filtered by combination of graded screens and paper filters
metal, clay, or concrete based roofing materials are ideal for rainwater harvest
Where irrigation is required
1)Use high-efficiency equipment and/or climate-based controllers
Summary of Reference Standard
None
Approach and Implementation
6)Use of mulch on trees, shrubs and flower beds
a)Keep landscape areas mulched to conserve moisture & preventing evaporative water loss from soil surface
a)micro-irrigation systems
Drip systems apply water slowly & directly to the roots of plants, using 30%-50%less water than sprinkler irrigation
b)moisture sensors
Reduce potable water consumption for irrigation by 50% from a calculated mid-summer baseline case
Reduction shall be attributed to any combination of:
1)Plant species factor
Step 1—Create Design Case
1)Determine the landscape area for the project
2)Sort the total landscape area into the major vegetation types (trees, shrubs, groundcover, mixed, & turfgrass), listing the area of each
2)Irrigation efficiency
3)Use ofcaptured rainwater
4)Use of recycled wastewater
5)Use of water treated & conveyed by a agency specifically for non-potable uses
c)Provide computer interface for monitoring & schedule modification
d)No irrigation of plants & turf in the months of Nov. to Apr.
e)No irrigation of shrubs from September to June
d)PlaБайду номын сангаас water use zones: High- regular watering; Moderate- occasional watering; Low- natural rain fall
2)Practical turf areas
Plant turf grasses only for functional benefits
– low Kd values are found where ground shading from tree is less than 60% or shrub & ground cover <90%
Kmc=MicroclimateFactor
Environmental conditions specific to the landscape, including temperature, wind and humidity
Standard Assumptions & Variables
1)Calculations based on irrigation during July
2)KL= Ksx Kdx Kmc
KL = Landscape Coefficient
The volume of water lost via evapotransprition, dependent on the landscape species, the micro-climate & planting density
3)Soil analysis and preparation
4)Appropriate use of plant materials
Choose plants that will easily adapt to the site
a)Consider mature size and form
b)Consider growth rate
3)Minimize the amount of site area covered with turf
4)Use techniques such as mulching, alternative mowing and composting to maintain plant health
Recommended design principle:
WATER EFFICIENT
WEC1.1:
Water Efficient Landscaping— Reduce by 50%
Limit or eliminate the use of potable water, or other natural surface or subsurface water resources available on or near the project site, for landscape irrigation
– higher Kmc conditions occur where evaporative potential is increased due to landscapes surrounded by heat-absorbing & reflective surfaces or are exposed to particularly windy conditions
--Moisture and rain sensors
--save water by ensuring that plants only receive water when necessary
c)rain shut-offs
cisterns, underground tanks, ponds… can reduce or completely eliminate the amount of potable water use for irrigation
1)Design landscaping with climate-tolerant plants that can survive on natural rainfall quantities
2)Contour the land to direct rainwater runoff through the site give vegetation an additional water supply
KS = Species Factor
Variation of water needs by different plant species
– high, average, and low
– use plant manuals & professional experience to determine
Technologies
1)Use of irrigation technology, rain water capture, advanced wastewatwe treatment is another approach to achieve WE C1
2)High-efficiency irrigation strategies:
3)Determine Ks Kd and Kmc
4)Select “low”, “average” or “high” value for each parameter
5)Calculate KL
6)Determine the reference evapotranspiration rate (ET0)
5)Effective and efficient watering practices
a)Regularly check irrigation systems for efficient & effective operation
b)Use drip, micro misters and subsurface irrigation systems, smart irrigation controllers
– average Ks = 0.5, plants needs no irrigation Ks=0
Kd = Density Factor
The number of plants & the total leaf area of landscape
– average Kd is applied to areas where ground shading from trees is in the range of 60% -100% of landscape area, which = shrubs and ground cover shading 90%-100%
metal, clay, or concrete based roofing materials are ideal for rainwater harvest
Where irrigation is required
1)Use high-efficiency equipment and/or climate-based controllers
Summary of Reference Standard
None
Approach and Implementation
6)Use of mulch on trees, shrubs and flower beds
a)Keep landscape areas mulched to conserve moisture & preventing evaporative water loss from soil surface
a)micro-irrigation systems
Drip systems apply water slowly & directly to the roots of plants, using 30%-50%less water than sprinkler irrigation
b)moisture sensors
Reduce potable water consumption for irrigation by 50% from a calculated mid-summer baseline case
Reduction shall be attributed to any combination of:
1)Plant species factor
Step 1—Create Design Case
1)Determine the landscape area for the project
2)Sort the total landscape area into the major vegetation types (trees, shrubs, groundcover, mixed, & turfgrass), listing the area of each
2)Irrigation efficiency
3)Use ofcaptured rainwater
4)Use of recycled wastewater
5)Use of water treated & conveyed by a agency specifically for non-potable uses
c)Provide computer interface for monitoring & schedule modification
d)No irrigation of plants & turf in the months of Nov. to Apr.
e)No irrigation of shrubs from September to June
d)PlaБайду номын сангаас water use zones: High- regular watering; Moderate- occasional watering; Low- natural rain fall
2)Practical turf areas
Plant turf grasses only for functional benefits
– low Kd values are found where ground shading from tree is less than 60% or shrub & ground cover <90%
Kmc=MicroclimateFactor
Environmental conditions specific to the landscape, including temperature, wind and humidity
Standard Assumptions & Variables
1)Calculations based on irrigation during July
2)KL= Ksx Kdx Kmc
KL = Landscape Coefficient
The volume of water lost via evapotransprition, dependent on the landscape species, the micro-climate & planting density
3)Soil analysis and preparation
4)Appropriate use of plant materials
Choose plants that will easily adapt to the site
a)Consider mature size and form
b)Consider growth rate
3)Minimize the amount of site area covered with turf
4)Use techniques such as mulching, alternative mowing and composting to maintain plant health
Recommended design principle:
WATER EFFICIENT
WEC1.1:
Water Efficient Landscaping— Reduce by 50%
Limit or eliminate the use of potable water, or other natural surface or subsurface water resources available on or near the project site, for landscape irrigation
– higher Kmc conditions occur where evaporative potential is increased due to landscapes surrounded by heat-absorbing & reflective surfaces or are exposed to particularly windy conditions
--Moisture and rain sensors
--save water by ensuring that plants only receive water when necessary
c)rain shut-offs
cisterns, underground tanks, ponds… can reduce or completely eliminate the amount of potable water use for irrigation
1)Design landscaping with climate-tolerant plants that can survive on natural rainfall quantities
2)Contour the land to direct rainwater runoff through the site give vegetation an additional water supply
KS = Species Factor
Variation of water needs by different plant species
– high, average, and low
– use plant manuals & professional experience to determine
Technologies
1)Use of irrigation technology, rain water capture, advanced wastewatwe treatment is another approach to achieve WE C1
2)High-efficiency irrigation strategies:
3)Determine Ks Kd and Kmc
4)Select “low”, “average” or “high” value for each parameter
5)Calculate KL
6)Determine the reference evapotranspiration rate (ET0)
5)Effective and efficient watering practices
a)Regularly check irrigation systems for efficient & effective operation
b)Use drip, micro misters and subsurface irrigation systems, smart irrigation controllers
– average Ks = 0.5, plants needs no irrigation Ks=0
Kd = Density Factor
The number of plants & the total leaf area of landscape
– average Kd is applied to areas where ground shading from trees is in the range of 60% -100% of landscape area, which = shrubs and ground cover shading 90%-100%
