Residential and Commercial Design Exercise The objectives are to develop a MWELO compliant planting plan, water budget and hydrozone using the following steps:

• Create the Maximum Applied Water Allowance • Create a minimum of 4 hydrozones including 1 Special Landscape Area

(SLA) • Choose plants from Plant List WUCOLS Region 1 • Create a compliant Estimated Total Water Use

Calculate the MAWA

• Calculate the total landscape area square feet • Calculate MAWA where MAWA= (Eto)(0.62)[(ETAF x LA) + ((1-ETAF) x SLA)] • ETAF is .55 for residential design and .45 for non-residential designs

Create Hydrozones

• Create hydrozones, considering water needs, microclimates and soil type • Calculate landscape area for each hydrozone

Choose Plants

• Choose plants appropriate for hydrozone areas from provided plant list • Choose irrigation method for each hydrozone (irrigation efficiency is .75 for

spray or .81 for drip) Create a compliant ETWU

• Calculate estimated total water used by hydrozone • Total all water use • Verify compliance • If needed rework hydrozone areas or choose lower water use plants and/or

more efficient irrigation method for an improved ETWU

Design Exercise - Additional questions: 1. MWELO states that unless prescribed otherwise by the soils report, a

minimum of 4cy of compost per 1000sf shall be applied. How many inches of compost should you apply over 500sf?

2. Which of the following are you required to include in your irrigation design to comply with Appendix D? Check all that apply.

Backflow prevention device Manual shut-off valve Flow Sensor

Pressure regulator

Drip irrigation

Landscape water submeters for non-residential landscapes over 1000sf

3. What does PF stand for? What does ETAF stand for? What is the difference between the two?

Plant List WUCOLS Region 1

Common NamePlant

Factor

sideoats grama G N 0.1purple needlegrass G N 0.1Majorcan germander Gc 0.1white bark CA lilac S N 0.1western redbud T N 0.1

California fescue G N 0.2deer grass G N 0.2vervain Gc 0.2lavender S 0.2plum T E 0.2

purple/burgundy fountain grass G 0.5Western Mokelumne fescue G 0.5strawberry Gc N E 0.5false heather S 0.5pineapple guava S T E 0.5

Kentucky Bluegrass G 0.8varies E 0.8baby's tears Gc 0.8deppea S 0.8coast redwood T N 0.8

Very Low Water Use

425 SF150 SF

SINGLE FAMILY RESIDENCE(15' BLDG. HT.)

DrivewayWalk

Porch

Walk

Sidewalk

250 SF

Pro

perty

Lin

e

Pro

perty

Lin

e

12SF

90 SF(SLA)

130 SF

Hydrozone Limit

WELO Workshop

Design Exercise - ResidentialApril 2017

Scale: 1" = 8'

0' 4' 8' 16' 24'

1,057 SF90 SF

SITE INFORMATION City: WINDSORETo: 44.2Total Landscape Area: Special Landscape Area: Enter MAWA: Enter ETWU:

________________________________________

.d

COMMERCIAL BLDG.

(4,405 SF)

Patio

Walk Walk

Bike Rack

Trash

Property Line

Driveway

Property Line

Property Line

Walk

Driveway

Screen Wall (typ)

22 Parking Spaces

Planter Pots (typ)

Hydrozone Limit (typ)

115

SF

115

SF

880 SF

600 SF

100

SF

315 SF 380 SF

2,210 SF

2,580 SF

1,410 SF

1,550 SF

60

SF

60

SF

Seat Blocks (typ)

30

SF

EVCS

Right of Way

Entry

WELO Workshop

Design Exercise - Commercial

April 2017

10,405 SF

SITE INFORMATION City: WINDSORETo: 44.2Total Landscape Area:

Special Landscape Area:

Enter MAWA:

Enter ETWU:

Scale: 1" = 30'

0' 15' 30' 60' 90'

________________________________________

425 SF150 SF

SINGLE FAMILY RESIDENCE(15' BLDG. HT.)

DrivewayWalk

Porch

Walk

Sidewalk

250 SF

Pro

perty

Lin

e

Pro

perty

Lin

e

12SF

90 SF(SLA)

130 SF

Hydrozone Limit

WELO Workshop

Design Exercise - ResidentialApril 2017

Scale: 1" = 8'

0' 4' 8' 16' 24'

SITE INFORMATION City: WINDSORETo: 44.2Total Landscape Area: Special Landscape Area: Enter MAWA: Enter ETWU:

________________________________________

44.2

17,041.18

Zone 1 .8 Spray .75 1.066 250 266.50 7303.17

Zone 3 .1 Drip .81 .12 130 15.60 427.50Zone 4 .5 Drip .81 .617 150 92.55 2536.24Zone 5 .5 Drip .81 .612 12 7.34 201.25

967 488.24 13333.25

Zone 2 .2 Drip .81 .246 425 106.25 2865.09

90 90 2466.36

488.24

967.505

1057578.24

.547

15799.61

1057 SF 90 SF17041.1815799.61

Zone 1

Zone 2

Zone 3Zone 4

Zone 5

Zone 6

Zone 6

.d

Design Exercise - Additional questions:

1. MWELO states that unless prescribed otherwise by the soils report, a minimum of 4cy of compost per 1000sf shall be applied. How many inches of compost should you apply over 500sf? 1.3” per 500sf = 2 cubic yards The Math: 1yd3= 27ft3 , so 4yd3 = 108 ft3 , so 2yd3 = 54ft3 And 1ft=12in

108 ft3 = 0.108ft, 0.108ft x 12 in = 1.3 in OR 54 ft3 = 0.108ft, 0.108ft x 12 in = 1.3 in 1000 ft2 1ft 500 ft2 1ft

2. Which of the following are you required to include in your irrigation design to comply with

Appendix D? Check all that apply. Backflow prevention device (not in Appendix D but required by plumbing/municipal codes)

Manual shut-off valve Flow Sensor

Pressure regulator Drip irrigation

Landscape water submeters for non-residential landscapes over 1000sf

3. What does PF stand for? What does ETAF stand for? What is the difference between the two? PF is the Plant Factor. PF is used in calculating the Estimated Total Water Use for each hydrozone. Plants are categorized by their water use (high, moderate, low or very low). ETAF stands for Evapotranspiration Adjustment Factor. When calculating MAWA, ETAF is assigned by the State to be .55 for new and renovated residential landscapes and .45 for new and renovated non-residential landscapes. When determining ETWU, ETAF is the plant factor divided by the irrigation efficiency.

Residential and Commercial Design Exercise instructionsPlant list for MWELO event - CopySheet1

MWELO res-com design exercise two-sidedExample Residential design MWELO 11x17MWELO - Exercise - Add'l Questions with answers