Alice Vail Middle School Mitigation Project Alice Vail Middle School, 5350 E 16th St, Tucson, AZ 85711 ARC 451B | 2018F |Nan Liang + Rachel Low
THE PROJECT During periods of heavy rain, Alice Vail Middle School and its adjacent streets become subjected to heavy flooding. The amount of accumulated water on site poses as a potential safety risk to students, and often goes to waste when it drains into the nearby underground wash along Craycroft road. Our project’s objective is to improve water mitigation by updating excess grass areas, provide new landscaping for desert educational programs, and to utilize collected storm water on site efficiently. We hope the updates will benefit both the local resident and students by encouraging community engagement and gathering.
CONTENT
Issue
04
Site
16
Drylands Garden
28
Oasis Field
34
Info Graphic
40
05 ISSUE
URBAN NETWORK &WATER SYSTEMS
B
CEDE T PREry Field N -
le Mi s ile M
1 5
pt
D C
de ta
etation basi nr n tio
er Ch
0
s ile M
ield con sis F ce Oa
6
alamo wash
water resource
B
arcadia wash
Alamowash Watershed
C
sahuara wash
fena floodplain
D
van surenwash
15
A
M
urban open space
s ile
1
educational institutation
A
ALAMOWASH WATERSHED AREA: 10.6 sq miles CITY AREA: 236.50 sq mi (612.55 sq km) NOTED WATERSHED ISSUES: Alice Vail Middle School is located in the AlamoWash Watershed, but in higher elevation. Storm water would runoff from the school site to the Alamo Wash.
nta r
l - Scho hoo ol Sc &
n de
ids av
y
D
CEDE PREon ElemNeT
borhood Ga igh Ne r
S Swan Rd
Recently, Pima County has the Alamo Wash Basin Management Study encompassing 9.5 square miles flooding areas which includes the Alamo, Arcadia, Van Buren and Sahuara washes in the watershed.
D
C E 5th St
od
Shading rk a tP
l - Neighbor ho oo ch
Vail Middle e c i S Al
B A
E 22nd St S Kolb Rd
SITE
Alamowash Watershed drainage 1 mile
N
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sh - Ad j a c wa en
ISSUE
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COMMUNITY ANALYSIS - ADJACENT PROGRAMS
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Craycroft Rd
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ISSUE
D e s e rt L a
nd
ape
E xs
g tin
sc
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FLOODING ISSUES ON SITE
So
Play A re u th
A. Heavy saturation located on the west side of the school. Flooding occurs in the garden and overflows into southern play area.
E. 16 St
A.
a
B. an
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Sh
llo
e li e f C h wR
ne
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B. Minor flooding with water coming from nearby Desert Aire Park and roof run off.
C. Storm water comes from the Neighborhood Channel and drains into lower soccer ball field. Major source of flooding.
Critical Flood Areas Water Accumulation Flooding Sources 10
E. 18 St
Craycroft Rd
E. 16 St
Flo
o d P l ai n
D. Higher planed soccer feild directs rainwater towards lower field. Topography drains water towards Craycroft Road / Wash.
Gr
a t e / G utt e r E. Drains whatever water is caught in catch basin into underground wash.
D.
Ca
E.
C.
Craycroft Rd
F.
t c h B a si n
F. Recives water from Flood Plain and from Relief Channel
11
ISSUE COMMUNITY FRAMING - TUSD INTERVIEW
E. 16th Street
A.
B. B.
A.
S. Beverly Ave.
A.
E. 16th Street
S. Beverly Ave.
B.
C.
A. C.
D. E. 18th Street
12
E. 18th Street
BLUE - RAINY DAY ISSUES eussI yaD yniaR - eulB :stnemmoc
S. CRAYCROFT RD
eussI ytetaS - wolleY :stnemmoc
is no nrecnoC rojaM - deR :stnemmoc
A Area - Offsite flow that floods garden and exterior roadways. B Area - Interior courtyard floods due to accumulated plant debrie. Water floods into south play area. C Area - Transforms into flood plain and becomes safety hazzard. D Area - Offsite water floods into school property and floods drainage system YELLOW - SAFETY ISSUES A Area - If not properly maintained, too many trees can produce debrie that will clog drainage systems. B Area - Landscaping obscures drivers from looking left and right. Refrain from excessive landscaping. C Area - Flooding in school courtyard, safety hazzard. RED - MAJOR CONCERNS ON SITE
S. CRAYCROFT RD
N rof eC. calP dooG - neerG :stnemmoc
A + B Areas - Adding too many trees could cause more safety issues (i.e Cars can't see, debrie causes drainage issues.) C Area - Flooding from neighborhood is a big concern for safety. Overflows Arcadia wash. GREEN - GOOD PLACE FOR NEW LANDSCAPING A Area - High potential shade area for students and water Harvesting opportunities - Advised Precedent: Davidson Elementary School 13
ISSUE
72
25
SOLUTION
2574
Initial Off Site Flooding
Retention Systems N
14
0
30
60
90
120 ft
2574
Mitigated Water Flow
2576
15
2572 2570
16
17 SITE
17
SITE SANKEY-LIKE DIAGRAM neighborhood wash
oasis field
rain water drylands garden
roof run off landscape boundary street run off street drainage
neighborhood landscape
18
e
evaporation
retention
vegetation (transpiration)
infiltration
detention
19
SITE SYSTEM AXON average rain water capture 72,080.42 gal
average rain water capture 72,080.42 gal
LB DG
OF DG
OF
Oasis Field
DG
Drylands Garden
LB
Landscape Boundary OF
0’
20
0’
OF
64’
128’
192’
Oasis Field
256’
DG
Drylands Garden
LB
Landscape Boundary
64’
128’
192’
256’
LB
Site Plan: Low Value
72
25
2574
2572
2570
2574
2576
1 gal Plant A 1 gal Plant B 10 - 15 gal Plants Shading Structure N 0
30
60
90
120 ft
21
SITE
72
5 SITE PLAN: HIGH VALUE2
2574
SEC
22
2570
SEC
0
30
60
2572
N 90
120 ft
23
SITE SITE SECTION walkway channel
shading structure
18 ft
30 ft
perforated metal 2 ft
2 ft
LB
24
15 ft
Drylands Garden
Shadded Walkway from Drylan
bio swale
1 ft
landscape boundary
1 ft
16 ft
nds Garden to Oasis Field
20 ft
1 ft
20 ft
LB
Oasis Field
0
30
60
90
120 ft
25
SITE
Single Element STEATING STEATING STEATING
SHADING SHADING SHADING
CHANNEL CHANNEL CHANNEL
1 1
shading structure shading shading structure structure
1 1
seating wall seating seating wall wall
1 1
daylight wash daylight daylight wash wash
2 2
microbasin microbasin microbasin
2 2
terrace seating terrace terrace seating seating
2 2
perforated walkway perforated perforated walkway walkway
drainage drainage drainage
neighborhood wash
3 3
26
friendly pedestrain friendly friendly pedestrain pedestrain
SG smallSG gravel SG small gravel small gravel
SOIL SOIL SOIL
S sand S S sand sand
3 3
LG largeLG gravel LG large gravel large gravel
3 3
wied steps seating wied wied steps steps seating seating
G grass G G grass grass
A1 1 galA1 plant A1 1 gal plant 1 gal plant
neighborhood wash neighborhood wash
bioswale bioswale bioswale
VEGETATION VEGETATION VEGETATION
B1 1 galB1 B1plant 1 gal plant 1 gal plant
5 5 gal5 5plant 5 gal plant 5 gal plant
15 15 gal15 15plant 15 gal plant 15 gal plant
KIT OF PARTS
Prototype Basin Drylands Garden - High Value
Drylands Garden - Low Value
community garden
community garden
1 2 2 LG A1 B1 15
1 2 LG Oasis Field
school garden
multiuse soccer ball field - Low Value
S monsoon garden
2 LG A1 B1 5 15
multiuse soccer ball field - High Value
2 G LG
monsoon garden
LG Landscape Boundary Low Value
3 1 1 15 High Value
3 1 1 A1 B1 5 15 27
28
29 DRYLANDS GARDEN
29
DRYLANDS GRADEN SECTION PERSPECTIVE WITH DETAIL Design replaces the original dead grass space with slightly tiered off landscapes and gravel to reduce flooding. Space is transformed into miniature gardens for community gatherings. Trees provide shade. The school garden invites the neighboring community to collaborate with students to take care of the shared garden space. It provides an opportunitiy for students to learn about farming and to strengthen the relationship between the school to the community. Similar to Davidson Elementary School.
Macro Basin Provides shade during the heat of day and drainage during monsoon season.
Monsoon Garden Used for school social activities, provides shade, and serves as an evaporative cooling pool.
School Garden Concept Reference Davidson Elementary School 30
Enviromental lab spaces for students to learn about the desert enviroment or horticulture.
R
STO
OR
ET
STRE
BO
EIGH
MN
O M FR
D/ R AN
Communication Garden A space to enourage outdoor activities and community engagement. Provides shade and monsoon water mitigation. 31
DRYLANDS GRADEN FUNCTION MORNING
SCHOOL SESSION
OUTDOOR ACTIVITIES
CLASS TIME
12:00 A.M.
2:00 A.M.
4:00 A.M.
6:00 A.M.
8:00 A.M.
10:00 A.M.
MORNING
aprox: 6:30 a.m. - 8:00 a.m. Outdoor class space and learning labatory
SPRING SESSION
AFTERNOON
LUNCH TIME
12:00 P.M.
OUTDOOR ACTIVITIES
2:00 P.M.
SCHOOL SESSION
approx: 8:00 a.m - 3:00 p.m Outdoor classes and Break space
GOING HOME
4:00 P.M.
6:00 P.M.
8:00 P.M.
10:00 P.M.
AFTERNOON
approx: 3:00 p.m. -5:00 p.m. Idle waiting space for pick up and after school activities
MONSOON
FALL SESSION
Storm Water
124,403.52 GAL
634,457.95 GAL
JAN
FEB
MAR
SPRING SESSION January - June outdoor classes and break spaces
32
APR
MAY
SUMMER
1,393,319.43 GAL
JUN
May - Early August Community gathering space and events
JULY
MONSOON
AUG
June - August Collecting storm water
1,393,319.43 GAL
SEP
OCT
FALL SESSION
NOV
August - December outdoor classes and break spaces
DEC
Outdoor activities in the Community Garden with shading. Views to the Monsoon Garden and the Desert Aire Park.
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34
35 OASIS FIELD
35
OASIS FIELD SECTION PERSPECTIVE WITH DETAIL The original soccer field has been re-landscaped to reduce the open grass space. The addition of catch basins mimic desert washes to help to reduce storm water flooding and serves as desert education spaces. New seating spaces with trees provide shade for the children druring the hotter months. The overall space has been redesigned to be utilized in all weather conditions and seasons.
Natural Bioswale Encourages natural desert landscaping to provide water mitigation and to serve as educational spaces for students.
Neighborhood Water Mitigation Storm water block helps to redirect incoming run off from nearby neighborhood and into bioswale.
Walkway Concept Reference Cherry Field 36
Students can observe the natural bioswale as water flows freely between the Oasis Fields and Drylands Garden.
low
overf
low
overf
low
overf
low
overf
low
overf
ry om d orm fr asis field o low st overf arden to g s d n la
low
overf low
overf
r from ash wate w storm borhood h ig ne
Oasis Fields Retains the original soccer fields and encourgaes students to learn about their surrounding desert enviroment.
37
OASIS FIELD FUNCTION MORNING
SCHOOL SESSION
STUDENTS ARRIVING AT SCHOOL
12:00 A.M.
2:00 A.M.
4:00 A.M.
6:00 A.M.
OUTDOOR ACTIVITIES
8:00 A.M.
10:00 A.M.
MORNING
aprox: 6:30 a.m. - 8:00 a.m. All students should be reporting to their classrooms
SPRING SESSION
AFTERNOON
LUNCH TIME
12:00 P.M.
OUTDOOR ACTIVITIES
GOING HOME
2:00 P.M.
SCHOOL SESSION
approx: 8:00 a.m - 3:00 p.m Outdoor classes and Break
4:00 P.M.
6:00 P.M.
8:00 P.M.
10:00 P.M.
AFTERNOON
approx: 3:00 p.m. -5:00 p.m. After school sports and activities . Waiting location.
MONSOON
FALL SESSION
Storm Water
overflow to the drain 124,403.52 GAL
634,457.95 GAL
JAN
FEB
MAR
SPRING SESSION January - June outdoor classes and break spaces
38
APR
MAY
SUMMER
1,393,319.43 GAL
JUN
May - Early August School out of session,
JULY
MONSOON
AUG
June - August Collecting storm water on street
1,393,319.43 GAL
SEP
OCT
FALL SESSION
NOV
August - December Outdoor classes and break spaces
DEC
View of Southern most Soccer Field. Bioswale mitigates flooding and allows students to learn about the desert enviroment. 39
40
41 INFO GRAPHIC
41
INFO GRAPHIC FLOOD MITIGATION
Peak Discharge - IN 298 cfs
Peak Discharge - IN 193 cfs
Peak Discharge - IN 134 cfs
Peak Discharge - OUT 76 cfs
Peak Discharge - OUT 153 cfs
Peak Discharge - OUT 40 cfs
Detla Discharge 70%
Detla Discharge 28%
Detla Discharge 49%
6.8 acre-ft Total Storage
8.5 acre-ft Total Storage
10.1 acre-ft Total Storage
10 YR
25 YR
100 YR
42
shading
desert landscape
education communication
activities
43
INFO GRAPHIC HIGH VALUE PLAN BUDGET hydroseed: soil stabilizer & basin bottoms - 85,639 SqFt X $0.05 - - $4,282
1 gal plant - 124 x $6 - - $744
3 to 5 gal plant - 66 x $12 - - $792
15 gal plant - 123 x $40 - - $4,920
concrete - 61,862 SqFt x $65 - - $4,021,057
subtotal - - $5,859.645
44
steel sheets - 157 x $50 - - $7,850 tensile shade structure- 52 x $35000 - - $1,820,000
contingency - 20% - - $1,171,929
total - - $7,031,573
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46
View from Oasis Field under the shading structure to the northern neighborhoods.
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