HomeMy WebLinkAbout2006-P10446 - retaining wall PERMIT
�ITY` OF ORONO
Permit Number:
27�0 Keliey Parkway- PO Box 66 P10446
Crystal Bay, Minnesota 55323 Permit Type:
User Defined Surc Building
(952) 249-4600 Date Issued: l0/13/2006
SITE ADDRESS: 3587 North Shore Dr Unit#
Wayzata,MN 55391
P��� 08-117-23-34-0056
DESCRIPTION:
Proposed Use: Residential
Permit Class: General
Permit Type: User Defined Surc Building Permit Sub-type(s): Retaining Wall
DETAILS: —
Approved per resolution#:
Separate permits required:
NOTICES/REMARKS:
Replacement of Retaining Wall
FEE SUMMARY: Permit Fee: $ 23�•25 valuation: $ 14,000.00
State Surcharge Fee: $ 7.00
TOTAL FEE: $ 244.25
APPLICANT: Oh Landscapes LLC OWNER: Steven&Janna Sundby
25070 Smithtown Road 3587 North Shore Dr
Shorewood,MN 55331 Wayzata MN 55391
THE UNDERSIGNED HEREBY REQUESTS PERMISSION TO MAKE THE REAL IMPROVEMENTS SPECIFIED
AND AGREES TO DO ALL WORK IN STRICT COMPLIANCE WITH ALL CITY OF ORONO ORDINANCES AND STATE OF
MINNESOTA BUILDING CODE REQUIREMENTS.
�
%�� - '' - ' , �
/ ' � �'
G�G�t'!r c
APPLICANT PECtMITEE SIGNATU E [SS� D BY SIGNATURE
r
�
Copies: 1-File(Signatures Required), 1-Appiicant, 1-Monthly Reports, 1-Assessing,(If Septic, 1-Septic) Page 1
OCT-10-2006 11 :29 AM Macalester_Bioloey 651 696 6443 P. 02
, G Q.P�
� p City af Orono �o�Ob
. � � P.O,Box 66 ' • • �a C UffiE OIV�'��';. ; • �• .
• � � I750 Kelley Perl�vay Dare Reeelved: ,�� P�m�ic�I '� �1�
� ' �� (g52)Z 9-460MN 55323 , �/ � . �;'j :�, ;;; .
.Amount: S ���i •a C.LrP Filbd�
A ro�rod MPG `.�� : ;
PP BY� ��� siu Pl�n;:'I � . .
, �D -�'3-ot� � ' • . .
Reoominenda: roval . D'oni11'�: .
CITY OF ORONO-USER DEFINED/GENERAL PE�tMIT ` '
(All permits muat be approvod by�he Buildinp Ot�fcial end/or 2oninB Deportmant) �
;;J�b'�S����, `wn+�c.�Iii�`�ririati�,ii;� . :�.�,��.. � ` �
< �;. ���:�.
, . .. . .
.., , . .;. . . �:;.:�.�.. . � ,
,
35� �. .5� � � ,
Si�e Address: o�e, r,��. �
�e.�e.� 7�, ,,�,�b ; �
Owrier, Mailing Address: S �t�oe ;
City: V r'8v�O '
z�P; 5'53('l _. _ i
Z '
Home Phone: �5 � ���s� Alternate Phone: C �5( � I� ,
� .
������'�i�'Y��:: ,�";�dai�G��fo�'ii��tioxC:� ;;..,s,.:,,:���� � ;
�.�:;
.1 � = i �
Contractor/A,pp.: s S ��- Contact Person. �� h�
r� � 01�
Address; ���� s l � � State��eense#: —
ci�y: a � z�P: 5�'3Ga ��c��: — ` .
(05"� -�7 -' � 9 � q
Phone: �6 �+5 Alurnate Phone: �/ ��Z- Q� i� �
•>•:,,::.�..•; •• ���,• y��i�;w.,,. •. •.�;.., . ;
.�,.,.� •.' ;i i.;;c° !��t �I�v �j �{�y� , �+ :,,:;. .�••�,;.�. �,,:;<: � ..� .
:+J:�:�e::r::�:t1.��'s$:�� ��';:5'ii`;ir;� 4�ii�:'�:i•.}�-0/17�.0�. ' S ''''' ,��:l�' ;:,."�:13�r ;i,ry �' �
'.�� '�i�l�il\��,•' :Fi • �'►l:r',i'; ,".I�u .r:: "�;�.I
..�
�
[] $�i�v�y to Y.ake Retaining Walls I er
Generel�Uoer Defu�ed Surcherga �Ge�aral-Uaer Dafined Surchetge ❑ Qene�1-User Db �
"(Per UBC) i(Per tJHC) '/ +530.00 ! �
*Estimated Cost:S__ +Eetlmated Cost;S�7_ ��_ ? i
� I
❑ L?Qcks-42"or Greater ❑ Land A(Yeration ❑ Zo '
Genonl-Uur Defined Surcherge Geaeral-Uaer DcFined �
� ❑ Cocnmereial- er U�C c�ene�J-User� e
(p ) Q 0-500 Cubic Yards w For0�75'Zone 0.00
*Eatimated Coste $ 550.00(Needs 3ite Plen) ,
Ceneral-UserOefined ❑ SO1+Cubic Y��ds I ,
❑ Residential- S30.00 SS0.00(Neada C.U.P.) '
❑ Tree e v � .
(3eneral-User Definad
*Within 0-75' -S30.00
�
I herby apply for a User Defined Permit and I acknowledge tl�at the infotmation above is comple ttd ,
accurate;that the work will be in conformance with the Ordinances and Codes of the City and with th ate
Building Code;that I understand this is not a permit and work is not to start without a permit; and tt� the I
will be ' a rdance with the approved plan. ;
; �
( •��r�, !
` 0
Applicant ,, :...,... ,.,, . , : . D ' �
, �, . Res ��Form . n�w�� �, �
OCT-10-2006 11 :29 AM Macalester_Bioloey 651 696 6443 P. 01
, • � tl
October 1�, 2006 i
�
To whom it may concern, ' �
Included in this fax will be the completed form for the land alceration permit concerni ,
the retaining wall at 3587 Nocth Shore Drive. Please note that the cvntractor does not�
have a state license, so I have substituted their Taxpayer ip#in that space.
We are hoping to start work next Monday, October 16�'. I could come in this Friday � :
morning, October 13th to sign/pay for the permit. � �
I can be reached at 651 696-6444 with any questions. Thanks for your help in this
project!
Sincerely, ;
Steve and Janna Sundby �
� .
� i '
� .
I
� , .
i
i �
i :
I
I
� ' . i
I �
i
i • .
I
1
CHECK OFF LIST FOR ISS UANCE OF PERMITS
FOR O FICE USE ONL Y
ADDRESS OR LEGAL: 3SS � U�-'�N �l�k��-�= �2l Vk"``
PID: /��,=1� 7- Z ��''�/ �J
DESCRIPTION OF WORK: 12�Pt,►,�C�/�t. a.._j�" ��" /V�/V G �iJ.A•t,l�S
------------------------------------ --------- -----------------------------------------------------------------------
ZONING REVIEW BY.• DATEAPPROTjED: ��f3 D Po
BUILDING REVIEW BY.• - DATEAPPROVED:
------------------------------------------------------------------------------------------------------------------------
FEES TO BE CHARGED: Misc. Fees Calczrlatecl By:
PERMIT Yes `� No
PLAN REVIEYV Yes No SEWER CONN TION
STATE SURCHARGE Yes No WATER CONNEC ON
INVESTIGATION FEE Yes No PARK FEE
SAC Y s No SITEINSPECTIO
Numbe��of SAC Units OTHER (speci
------------------------------ ----------g----------------,----------------------------------------------------------
ZONING CHECK LIST zontn D�st,•tcr: ��--' � �--
Fire Depar�tment: Post Offrce: School District:
Lot Ar�ea: Sq ft. ,4a�es G6'idth Depth
Survey Subnlitted: Ye� No Date of Sin•vey: �/ ��"/ ' Q �
Proposed Setbacks:
Fr•ont(Lake): lZight Side: _
Rear(Street): Left Side: ,�� '�.-.�-1 c
Adjacent Struetures: Wetland: �� �
BtRilding Fleight: Def. Hgt. � Peak Hgt. �—
Lot Cove��age: � "
Grading: StaffApp��oval Date: S � �� By!I�%h� Cozrrrcil Approval Uate: U `— — �S�
Septrc: StnffApproval Date: � � By: j
7_onirtg File: # 3r�� Resolidiorr: #�� Resolutiaz Date: c`7 2� � �
Shoreland District: � rLICWD Pei�ntit:
Avg. Selbnck: _ Bhrff Setbacic Lot Coverage:
�xisting Proposed
Harcicover: D-7.i'
7�-Z.i 0' �� t�''�..�` :C.) �._ .,"�� ,-,
zsn-soo�
soo-�000�
Hardcover G'ariance Reyuired: }es � ��'o Date ofCouncil.lppi•oval.• � � � �
REMARKS(in lzocrse): C 1 V/L �o�K�'2o'�S ['��,p u.� "�'a �/���t( ,�'a r�
C t�l�t�oRii' �,,,�,�►f���� ���0'+a�"��-�'
»
B UILDING REVIEW CHECK LIST
UBC: CONSTRUCTION TYPE:
Sq Footage $Pe��Sg Ftg
Basen�ent x =
1 st Floor x =
2nd Floor x =
Garage x =
x =
TOTAL
do
Estimated Construction Value: $ l�i 0�v
Inspections Required: Work Requiring Separate Permits:
Site Plumbing Fi�•e
Hardcover Removal Mechanical Water Connectian
�Footing Septic Sewer Connection
F►•aming Fireplace Lawn Ir•rigation
Irrsulation (Masonry) Other
Wall Board (Mfg.) Weld(State Permit)
�'Final Gr•ading/Filling Electrical(State Permit)
Other
REMARKS(INHOUSE):
REVIEW BY OTHERS: DATE:
Access: Existing New
Access Approval: Date By.•
REMARKS(TO BE NOTED ON PERMIT):
« V► L So ar.�S v�P V ���i— �'—�'�A t Y7dJS uc/el N 6
X'�/4�-i/k't�W,-� '•
34
.>- l, - . ' ��4
�4:�}r 1�3pr'�it �5 .. �•y .. .
. +�'Bonestroo
lnter-Office Memo � R�ek&
�Associates
Engineers 6 Architects
To: Tom Kellogg Date: 8/28/2006
From: Matt Jensen
Phone: (651) 604-4835
Re: 000139-06000-0 Orono Zoning Application #05-3147, 3587 North Shore Drive Retaining Wall
Remarks:
I have reviewed the additional documents for the retaining wail replacement at the above referenced property.
The materials were reviewed for code compliance with the 2002 International Building Code (IBC).
In a memo to you dated July 13, 2006, I requested the property owner provide:
1. A foundation investigation certified by a licensed professional engineer
2. Certified wall design calculations
3. Certified wall construction documents
The property owner has provided items 2 and 3. The Barr Engineering report is not considered a foundation
investigation since it does not provide a design bearing capacity. In their memo dated August 17, 2006, Civil
Solutions Group has offered their services to verify the wall foundation soils once wall excavation begins.
In lieu of a formal foundation report, Civil Solutions Group (Engineer of Record) should provide a site visit during
wall excavation to verify soil conditions. Please provide documentation of the site visit to the City of Orono once
this is complete.
This submittal is code compliant with the IBC.
Please call me with questions.
- END -
..._...,...�....�__ .�_�....�...�o,..�.,,�,.�._,
n .�- �^�„r� �„'::, 9 4 f,
��� �� ��° ������� �
� yi i�i�." :':,�li`� ..!�-- �:f'�'„1"��r';:� t`��.i`�s !
�!' ,`�I��'rti�.:';:�. ... -�714/Nr/� U/s!-c.c1 �
L ��d.,,'.:���� :��...' H�;l��f'� �'Y,/� 111 �i.�\�,'1
� � } �:� .. , �
s. .`e ' f
( �'y ._ -- �o �.�_ �f_•---_._---___.__. I
''� �
# ��a���-__ _ i� ►3—o.� _ -------- --
� —.R __ . . . . � ..�.__.__. __..n_._ ,..�_...
Bonestroo, Rosene,Anderlik and Associates, Inc. www.bonestroo.com
❑St.Paul Office: ❑Milwaukee Office: ❑Rochester Office: ❑WillmarOffice: ❑St.Cloud Office: ❑Libertyville Office:
2335 West Hghway 36 12075 N.Capaate Pakway,Ste 200 112 7^Street NE 205 Sih S�Neet SW 3721 23�a Street S 1860 West Winchester Rd,Ste 106
SL Paul,MN 55113 Mequon,WI 53092 Rochester,MN 55906 YJilmar,AMl 56201 St Cbud,MN 56301 Libertyville,IL 60048
PFwne:651b3G4600 Plwne:262-643-9032 Phone:507-282-2100 Phone:320-2149557 Phone:320-251-4553 Phane:847�161631
Fan:651-63G1311 Fax:2fi2-241-0901 Faz:507-282-3100 Fax:320-2149458 Fa+c:320-251-6252 Fax:847-8163762
� . Aug. 18 , 2006 11 �47AM No �0015 P � 2 C
___----
Clvil Solutions �'�Y`�G
Croup,LLC�
. �_
lr� ['•��K�I\�Ul�'1
DATE: A,ugust 17, 2006
TO: Steve Sundby—Uwncr .
FR.OM: Mich�l R. Jc7hnspn, P_E.—Civil S�lulions C'rroup, LLC
RE: Sundby Resid.ence Reta.i.nino Walls (06-380)
Orono, MN.
Steve�
Attached are ihe design calculations ��r the eritical seclions c�i`both the npper and lower retaining
walls at you.r projec� I will address each of the items requested in the memorandum prepared by
Matt Jensen, P.E_ of B�netitrc�o Rosene Anderlik and Assc�ciaies, the re�vievving engineer for the
city.
1� Y have made an assumption on the stren.gth of the foundation mat,erial based on the
report prepared by Rarr�ngineering and my experience in dealing with lhe s�ils in
the'1'wi.n Citics area. 7:hc matcrial that exists at the retainin�walls varies from silty
lean clay tv sand with si.lt. CSG a.ssumed the worse �a�e maleria] exist,�on site (silty
lean clay) and assumed a strcngth of�=26°and Cohesion of 200 psf(which would be
a reasanable conside�ing tbe r�aterial unde.r the ba,tie of the wa11 ha,5 been cc�mpressed
si.ncc thc construction of thc original timber walls) in our desi�n.calculations. 'W'e
reco�ez�d that CSG be h'tred ta perform a f�uncia.tion inspeclion to �nsure adequa�e
bearing eavacity and strcngth of matcrial at the ti.mc of the wall construction in lieu of
any additianal testi.r.tg at th.�s tam.e. T)�is recammendalion is based an ihe facl Lhal ihe
cxisting walls have experienecd settlement. lf the sub soil is unable to support the
proposed loadix�conditions we wi)1 direct the cc�ntractor ic�m2.l:e ihe n�ceSsary
corrcetion to the sub base matcrial to achieve the requued bearin� capacity to support
ihe propased ret�ining walls. Slope stability is nvt an issue for ypur reia.ining walls _
due to the flat surface that exists at the base of the lower wall.
2, The c:alculaticros pr�vided show thei the walls will function safely as designed. CSG
has required an import of select graaular behind the retaining walls to ensure adequate
drainage exist,t and reduce preSSure t� lhe houlder walls. Water•uplill.is not
applicable to the design because the water ta.ble is not located immediately beneath
the reia.ining walls_
3. The construction plans provided by CSG addressed these requirements„
,�.,�.r.M1�u.t�Nlnneaeeue,�.oM • 8200 NYIi10o1Qt AvenYe 3oYSl1.SYlte 100.Bloomin900�.Mlntwr.otR 55431 • Tolvphono�952�?�1A7ES Faz(962)286.4696
' • Aug � 18 , 2006 11 :47AM No �0015 P , 3
This addresses all the requirements brought f4rt�by Matt lensen. If you have any qu�siions
or concem,s, please feel free to give me a ca11,
S' 1
Michael , on,P„E„
2
.
0
a
�
�
0
0
� SUNDBY RES � DENCE
�RON�, MINNESOTA
GENERAL NOTES: GENERAL NOTES:
0051CN FRDV1510N5: SUGGESTEO CUaLRY ASSL'RPNCE PROwS!ONS:
1. 7HE e'OLLOHING E�r'ECi1VE STRCNGTH PARAAICTCRS WERE 2. TfL f0UN0ATlOt�t SOILS AT THE 8.4SE CF 7NE WPLI(5)
�SVIAED IN THE FREPARATICM OF THE STfiUGTI1RPJL �LL BE iNSFECTEO 6Y THE GCOTECHNICAL CNGINEER.
CALCUlAT10N5 fOR iliE BCULDCR R�7PINING 'NALLS: nNY l�NSVIT�BIE 5011S OA iuPpOPERIY COMPAClCO
EMBRhXUENT M.tTERIAI �LL BE RC!lOYEO AND REPLACEC
Q C T 501� TYPE AS OIR:CTED 8Y TFY_ CNCai'IEER PRIOR ?0 V��LL
RE�AINED �ILL J4' 0 I7D PCF SELECT CRNlULAR CANSTRUCTION TQ PROVIDi 4ACaVATi BEARIA+C C•r�P41C�TY
REfAiNED S0.L 2E 0 120 PCF SR��DY LEAk CIAY ANO NINI.WZC SETTLEt1LNT,
FOUNpATION 50[L 26' 200 �20 PCF S�UJOY LFI+H CLRY
3. PLL WALI E1(CAVATION P.VD RETAINED SOILS SHALI BC
:OIL TYPES ANO DESIGN PROPERTiES SFI�LL BC C01:PIRl1CD 11�5PCCTED fOR CfiOUNprYATtR CONDITIONS. JJ7Y
6Y�HE SRE CtiOiECHNICAL ENCINECR ?RIOR TO vIALL ADOITIUV:,L DRAINA.GL P(iWISiQVS REOUIBCil IN THE fICLO
`�"STR�"��. SHEET INOEX SF34LL BC II:CORPORATED �ITO THE hAl1 CONSf.R1CTYJN f
DIFECTED BY ThC GE07ECHNICAL UJC�►JEER.
2. TkC WALL IS OCSICNCD Tp SUPPORT THE FOLIOv�ING
IMxIA1Uli SUfiCF?PRGC LDACING�: PAGC OCSCfaF110N 4. ALL STRUCTURALIY PLACE� BACKf�LL lJATEhIAL SF�WLL 8E
TC57CD AHO APPRCNED BY iHE ENGIH£ER, ►1ECTING THE
LNC LOAD: 100 PSF URNEVlAY � 71TLE SHEET Y1NI►�UA1 REWIRCNCNTS OF iHC APPRClJED OESiGN P�ANS
BACN 5LOPE_ NOH[ CR SR'CIfiCAT�CNS.
SCISIAIC: 110T APPLICABLC 2 SRE PVN
J 'NALL 1 k 2 EICVAT10N5
3� THE %VA1L 1'OlINQ4TION SOILS AT THE WPLI ICCAP.ONS 4 7YPKAl WALL SECTION DE��IL �. �LL S��L B4CKFILL SH4Ll BC TCSTED BY THE EItGINCCR
fOR iY015111RF. OUISIiY, d,ND CO►IPACTION P£RIODICRLIY
SW�LL BE CAPABLE OF Sai�LY St1FP6RTihG 2,000 PSf {EVERr 2' v�R7ILnlLY, l00"-200� C/C) MEE1miG TrfE
'XlfHOUT fPIIURE OR EXCESSNE SCfTLER1ENT. LOCPL N�:�INU►� REOUIRLNENTS OF TNE �PPRCNED DESIWJ PU�NS
BEARIttC GPACITY SHA.IL BE CONFlRAIED 8Y THE SITE oa s�cmcAnaNs.
GEOTECFINIC.\L ENGINECR PFlCR FOUNDATILW CXCAV0.iiQv
pND PRIOR TO YIALL CONSTRL'CTI011.
. 6. ALL WPiL EIEVATI0H5, GRAOES, M1U 9xCK5lOPE
CONOd60NS SH�LL BE VERIfIED BY iHC EHGINCER IN THE
� SUGGCSTW OUPIRY ASSURNlCE PRaAASXMVS: fIEID f'OR CONfORM61tCE WiTH APPROVEO OESIGN PLJwS.
aNY RE�ISIONS TO THE STRUC7URC GEOAIETR`f OR DESIGH
� 1. WALI CONSTHUG7KIN SHALL BE SUPEHVISED BV A OUAUFIED CRIPEfaA SHRLI fiCOV1RE G��:Gk A1�DIFICATIONS PR��R TO
'� CNGNEEfl CR TECHNICIAN 10 VCRItY fiELO �y0 SITE SCIL, PROCECDING A'RH Ca�75lRUCTION.
'' COt�ITI0N5. IF THIS NfOR1C IS NOT PCRFOR.bCD BY THE
`— SIIE GtOTECNNICAL CVGINEEF, a UUAU�IEO GE07EChNICAL
^ fNCINEER/'fELF+NICIaN SHeLI E£ CGN�JJITEO IN THGSC
co 1lATfERS PCRTAIMING TO TH[ SU:. CONCITIONS 1N0 4YALL
o PERfORMiWCE.
0
N
00
^� CWd[Mt•.:i m%1 RI t�t 9C1A'N(GI:4'.1L
� �Y)w0 R: aRr� P<VJrtle�,nt: . .r rc
= CIVIL SOLUTIONS GRaUP, LLC �� �+• °�-•°• ' �,5 ��•�, -^°��N���• -•����-b�
SUNC9Y RESIDENCE 25�9_ .w�ea n - ��.f r d�c:ti-.n+�on�
`� 42C0 HUYBOLD7 G.YENU£SOUT}S.'_UITE IQ1 -- OR0�0,NV n.,..:�� Pi iti s L:•r � .�, ie ��E,;i••Q�•�-��
BLO�r7'NGTQV.HN 5:4JI - Y� N�x OeaBo
pFiCI.E:99?)29t-t765 - n'•
� F,ix:;ser�zsz-zso: ��• TITLE SHEET """�"" ��:�
h11RE•YCIYILSCIJTIG�6GR0UP.GaY , 0..6W c6 �• o.� . -h-�. .
, ��� � I
' e't`^ -
. .s-.
• a�a
� y 5
'��u.. �
Ey .
_!._
��� 7
5�7�
'��,ee$
_L.2
�n
�°a' <n �N�
R"' �o` Z
/ w
y
w� �
�!/ �L
O •. N
'Y� —�� 5 '�z d
. . •�--� - ~� 32,5 r,l E ^ r�o lll
—:,.:T`.
j 1.1� ' q .�. '� � r--
� oi N
, e9 �{
I f y V�,. . I � � `�� \\ `a'
� �
a { �\ \ ��/�
,"-��`�� :33 — - G .� "' �--, `
iI a � � a
�I � T � N ,��.� ��^ �3 Y, � �
o �-• ' ; �°' �'�
� �. O o �a4� „_ � i � , p o
I �I � � W @� k �` � �.¢ a
K� ? •1 �r� r � ;N �% 4a
I ~I I(), `� �c � ,'s,
_-.L�:z � � -- 1�7 r� � '—H• -+Gi--.�._ �ti.\ f5 y � �d
' {I..�__... P P o4� n �!I ��.
U�
� tl � !� AJ 8.6 �
� �1 �,� �<e,� � ��� � � �` m.
�, �c: � 1 �r�
� �� ,� i y�,� r \�'l I �
�� Y/ � Z z � �I� / Y
� � -� � „c� u P
� '.� � I � "r.� �. m ✓ �, t�'�'.�' � R � — �
��: f ��,�Q ��
U� � .,`d � .��a
� I ���.. �� � (�'t ,
I � I:�� � �a.�
� '.'J.3 »'� ` x \
� � '''�.. � . 92.4 5 `
�.-• '---'�— -- '►"lv':'-:. --� ..
� � � • N 33°�s�40° w 9s.�u ... •�' it
�
, .�
� ;�
r r� �.
� c••'h c
o '` r ".��
�
� �o
� �� o
� '
0.' ��-
FLL O S�N��
�� ��=s 1�3,
Y �
fA w=No�,o
J� Z�ZN�S
W �'� �W�o;a
� �" F'_'�Z..�i�
O �� �o�lyl..J
Z �w g O$�LL���
2� � y Em W
�p a J i T
=K 'v 7 0
�« ' V"�
aW 1
a
i�
V �1
�Q !
uz
__ =
8 � �
_ . S
ll ' d 9L00 ' �N WdLti� ll 900Z ' Bl ' ��d
-�-.. ,��>� � 'a0�'d(1�'J`.Y'at�llfl�'rll\IJS�NIW
—">, SNOIIVA3"13 Z 9 I 11V'M o�����a - 96S^-'r6Z(ZS6>�XH�
�„J rx e.-w �
. .rv "SL'�-462(Z'a6!�3V�'�d
O9f-v0 •�:=-� iChSS AW'�'Cl':NINCOIE
wr..�� r- .y�n =�v-�a+e T�H'ONOtlO "'s �@ 'e-1'(iS�H��105 3(1�13:r LUIOBa'7�14�Z4 ➢
..i.p:n ke.e.a p oqma?�.u.:.�r rd� 3�.4301S�J A90H:Y5
no. �w.ar.Iwr�w�w�a -w n V•.o7e [GS:3 5Li � .�or.� n.p c
�n,�a�-m���azd�vcd tVl�c41�Lj�.n/quey 1 :aN.nwi�e.n mc .a r.�..�
�ll 'd(102l9 SNOIlf1lOS �IAIJ
ov
'71'O"G:Sf�:UTpS lY7/9��1•i!W V4d}
N011`dA3�3 3�d� 1NO2�� — Z ��'dM --
o�•cy �a �s ov oc oa o� o
�
I i i ��i J• i �i I� i� i I �i �i I�• i� I� i� i I �i �i I� � i �I: �. �i i i �� I�• i� I -i. �' �l_'-3J) �lVlA N
JNOIY 151� o
• (x�ve��s .(Niw) s� � ��am �nainoa) (L���> N�d� �
C" � ��vr�.uava� a3o�noa
� �
�-00'Gf6 a "13 N,/B I -+
�-- 1lVM 3� r1011C0
1. �00'Sf6 � 13 M/9 j / LN 7Q� 03HSiNld �
i � ;� OJ'9C5 = l3 M/8- �
m 00'6C6 :�� � 9D'Sf6 = l3 M/9--� � -CO'4C6
� 00'9C6 � � -- ----- --`�-- �---------- � -00'9f6 �
OD'9f6 ��!'�0'9£6 � l3 J/� � `—y�'9f6 � U �/! -------- 00'6ffi
-p{ 00'066 \ � CO'Lf6 a l3 �/�-' 00'046 �
O 00'lF6 �-OD'9'£6 = l3 A1/1 � 00'Z4fi 0
00'OSr6 = l3 M/1 / Z
Z OD'665 ( 00'YY6
ODZ4fi = l3 N,/1�� _���A NOf1VONf10!
� �: �� � JNF�l1f18 Ol l!(19*
z
o Z; z� z-
f W D�A DI� yIQ
� o F:o � o � o
NOItV/�3�� ��`d.� 1 02�� — l ��bM
OQ'S9 Oa OS 06 Oa' OZ Ol 0
�133i) 11tl/A
I i� �� i � Ii �• Iiiiil- � i� iii � Ii •�ili � �� Iiii �Ii� ii ��� i� Ii . �il� ii � 9N0-fV LSIU
' (H�vsi3s .(Nuv) s i �— i�vM ���noe) (L�.�> H��
r �-,va�nva�� a]olno�
i �
. �
' ' oo•�rs = ia r+Ve—,,
� � ,
.-00'Lf6 = l3 M/B ���t5 � �3 M/8� � ITdM�O eYO11A8
� � 1V JC*ON'� O1E151N1l-�
m oo•ocs :� •—oo-rre = �3 rn/e � � �' ��'
ore � •a3a:oo3a sv o31snror 3e
r oo�zcs / � 00'Ef6 f�i
� � ------ ---- , --------------- ---- � c xrrv onro 3ivrvixorddv?xr saoii�oi srnova aHa otsd N���a �r
D 00'bC6 �� _--�--�� � � 00'ZS6 � '.l �/S-� CO'Yf6 y 'S11�YJ�"
� _� - � 00'Zffi = l7 J/J L -_I
00'9f6 00'9f6 p l.i(18 3H1 H9fY.�}JHl JN�1tltlJCW Tl�tlj TIiN3YB ONY 7lIj3U0�
O \ �-O�J'6E6 = l3 D/J
Z 00'6F6- `� �' ;' �OQ'8f 6 z 7H1 11(3A32id OL NO11�Ja10 N]Ni!] IJI �R1Btld H11H..?1 51FCOf'
`� o0'9f6 @ l3 t+f 1— J� T ht a�ino8a3H1 atl a7�ndY3B�Ol 5�I��JBri 3l�x�31o3� tl 't�
L 00'9i6 a l3 M/t 00"L£6 � l] M/L 3F
LN3Yl3ZI[103'J 1N3WU3FW3 Wf'wINIW 3H1 SLN3S3Ud3l.'
N�"Id NOI1H�1313 3N1 M�PIl/�ONS SN0117A313 11NA1�9 4Y�11Q9
'lVh1 NOIIVUN(10j 3H1 ',ZI S' SlldN� !0 75V8 3H1 lv 1N3Y10381�3 ►411'IINIkY 3H1 'Z
Z emi Z a rn 9N��ief18 Ol Llfv3�
zo z o. z n '�? Li3Ha 33S) SW3Yi3al(]03M N91�3� ]Hl z
a A A! z L+3d SY St13Jl•'10B HLM a31�n2l15N�� 36 Ol 3L^t Sll�re�3Ht 'I o
�� � g o g�� � � � 8 =S310N �`d2�3N3� �
�� o co z•o � o ro �
rVl o N O Ulj o V1 O r' O o
�1
C.T1
�
N
♦ •
. s
r�
d
�.C�
I�
O
O
o GENERAL N07ES; G�N ERAL NOTES:
z t. THC SECTOF! S7-Id!!� REPRCSUJTS TYPICAL CONSiRUCT10l1 OEZ.VIS FOR 8. THE IAIFORTED fILL AWTGRWI IS TO 8E A fREE OPANiNC GRx1eVLiR
Tb'C SUHOBY ReS�DEHCC BOViCER WaLLS. SOIL. WIiH lESS THAN ISR P5VE5 PASSiNG THE �200 SIEVC.
2. THE {All:i►IU71 PAVLDEIi CE�H (D) VxR1ES AS PER Ti-;� OVER�L 'IVpLL 7. PIACE fIL7CR fABRIC A7 TME BACK Of' B�UI�ER 1CAL.�S i�5 SHdNN_
`fE1GNT. REfCR TO TNE BOULC.�A CEPTH SCNEOt)l.% BELdN.
5. CONPACT AKY S7RlY'TUfiRL IILI PLhCEC BENINO TtiE OR�R:nGF ZCNE
3. THE 80UlOCRS SHALL EE PLACED TO CRADVPLLY CECYtCpSE 1►� S�ZC TO �Sz STR139AR0 PRaGTOR,
WIiH 111CREASIMG HEIGHT, AW?JTa1111NC THC fJINIlAU►A OC?TH REO:IIRED 9, 'rHE MINIMUN EMBFaMEN7.40�VG THE YIALlS IS 12�
{D) fCR hfE OVEROLL WPIL HG�Ch7 (H)
4. THE EOULCERS SFU1ll BE P�p.�CD TO AVOip CONTIN�OUS JOINT PtANES 1a- TME DOULCER vIALL IS OCS�GA'CO AS CH.tV1iY WALL.
Ih VERTICAL 0.4 IAiEAA� DI�CTICNS. E.\CH BCULOGR SHiLL 3Cl�R ON V:NIIAUAI SAFC7Y f'ACTOp fOR OYERTURNING --------- �.5
lW0 OR StCRC flOCtS BRC/�Y IT, Y�ITH G4p0 fL17-TO-=UtT CAMA.CT. AnNIMUAI �AFCTY �ACTOR rOft SLIOrHG-------------�.5
5. PLAC: A 4" DIA CORRUGr�TEO PERrORATED FVC OR/JtJTILE tY/SOCN AT
Tt1E FINISHCD GRADE Of TFtE L(7NER 'A'PLIS AS SHOPM, C/JT�[7 THRU
f�,CE Ot' WALL A� �l'1TEp.
LOWER BOULDER DEPTH SCHEDULE
- YlAll HCICHT [N} A7INIAIUN 80LlCER GEPTH f Dl: �4' 3' AiIN�
O-2� 36" i'-b" LV�! PER►.ICPELE SOIL
3� — J9" � 02—� �/ �0.4NtWAY
{' 42" %�
5' 45"
� 6' -- S8" j'
1
I UFPCA Ti[R
"�,c�. '�
e oz. nitca rneenc [�rr)
H i r—j :.. .�_ _
"�:s 7�
I ;-�'�-'_.-,�F.:� ac;aNr� sai�
,.��_�.:.;.
UPPER BOULDER DEPTH SCHEDULE H iak[R ntR ��-'_ �
`4;"'"� IAIPOflT'EO GRANUTAR w+1ERI�L
I 15 (MIN)-- �. �� �, �s.z.;::� �
�+i iS�5:3i'-"r
Hl �.� ' :{%:�:.:.:t. 4„�y
'AA�,L HEIG3IT (Hl tttiVIMUTA B^��D A 0 PTH (Q); -
� FINISHED CRODE �'1 -*�:��-�;12�(l�INCY�i`! 2
�aJ� JO' ------- �,:,,���:�3:y��a�j.�3 � PPpROXIALtTC Ut�AS 0� E7(CAVnTION
5� JJ�
- - \I
¢ 6� 3fi" BOTTOM Oi' pl�LL `--4" DIA CORRUGATED PCRf017ATE0 FVC
� CRAINTILE YJRH SOCH. OAYUGHI THRU
� � �pCE dF CCtY(R W�tLIS m 1.0Y� POINT
-- 12� (�(IH) NATP/C SOIL—� Cf 'NPLI.
�,
o NOTE: TYPICAL WALL SECTION
� (HI) m EXPOSCD 'NALL NC7GFiT
`� (k)= EY.P05E0 1YFLl HC.GH1 + CNBEOAIE��7
�
� :o•-m�r I.:aioe w•_.�sca.��n:ea;t;uc �
_ :•i�.M ee' a•aktG ie,.t`s��.w
CIVIL SOLUTIONS GROUP, I.LC �< "�-••• � ws ±ee9s "��•'�°•.um,-.,u N�:.,...c��i:<u:�.�.,..-e.
d ��.� SLl�C9Y iESiCENCE :mQe� a�_ �er ;onsc�o.ee•.�u-_�.1
� 92fi:i HLMBO_D7 AVEIIU�SOUTH,SUITE IOS a. a .a . 9 C-q•n� .Ner ita
BLCGMIAGTiAV.MII 554j1 s�-• OtiCh�D.HN w,fii n�. :i ma s: u�
V4•>.'-U' Cd-D!0 e,
FHCIIE:(452i 296-4796 . T,*: �``,
Fax:(vsz)ya-4ss� . •• TYPICAL WALL SECTION DETAILS a"'`'''�`
� `7!:(E9CI'i1lS0:UTI0HS:RJI.P.CCM '- ��AUGO6 (� '�•:—_
�c:ra.i ._�,
� � �
. ��
g-Zy-� `
Barr Engineering Company
4700 West 77th Street• Minneapolis, MN 55435-4803
Phone: 952-832-2600 • Fax: 952-832-2601 �
B��� Minneapolis, MN •Hibbing, MN • Duluth, MN •Ann Arbor, MI •Jefferson City, MO
June 15, 2006
Mr. Steve Sundby
3587 Northshore Dr.
Wayzata, MN 55391
Re: Retaining Wail Evafuation
Dear Mr. Sundby:
Introduction
Barr Engineering is pleased to present the following findings and recommendations
regarding the retaining wall evaluation at the Sundby residence.
Two timber retaining walls are located on the property of the Sundby residence at 3587
Northshore Dr. in Wayzata, Minnesota. The main wall has a maximum height of
approximately 10 1/2 feet, and faces southeast and northeast. A blacktop driveway is
located at the top of the upper tier of the two-tiered wall, with each tier being
approximately 5 to 5 1/2 feet high. A second wall, approximately 5 feet high, faces
northwest and southwest. The concrete portion of the driveway is located at the crest of
this wall behind two coniferous trees. Both walls are made of treated timbers measurin�
approximately 6" by 6" and cut to various lengths. At select locations along the face of
the walls, tie-backs made of the same timber material extend into the backfill soil. The
tie-backs and the timbers on the face are pinned together with long spikes.
The walls, particularly the main wall on the east side of the driveway, have been moving
over the course of several years. The timbers on the face of the main wall have undergone
significant deflection on the order of several inches, especially in the central sections of
both tiers of the southeast-facing wall, as shown in Photo 1. Furthermore, the movement
in the main wall has caused the blacktop portion of the driveway to settle about 4 inches
relative to the concrete portion of the driveway, as shown in Photo 2. This has made the
walls undesirable from a structural stability standpoint, and Mr. Sundby would like to
replace them.
Services Performed
A visit to the Sundby residence was made by a Barr geotechnical engineer on May 17`�',
2006. The puipose of the site visit was to collect information regarding the general
condition of the walls, perform soil borings with a hand auger, and evaluate the feasibility
of various alternatives for replacing the existing wall. These alternatives include cast-in-
place concrete, modular block, boulders, and another timber wall. Mr. Sundby's.
preference is a boulder wall, so this option was evaluated particularly.
Soil borings with a 5-foot hand auger were performed at three locations at the main wall.
The first, referred to as HA-1, was performed about three feet away from the top of the
upper tier wall. This hole was placed in line with one of the shallow wooden tie-backs to
evaluate its integrity. The second hole, called HA-2, was placed about 3 feet southwest
(parallel to the wall) of HA-1. The purpose of this hole was to collect information about
the type of backfill soil and the amount of water present in the soil. The third boring,
referred to as HA-3, was performed in the backfill soil above the lower tier wall about 2
feet from the timbers af the lower wall. Soils encountered in the hand auger borings were
classified according to ASTM D2488.
Results
Site Visit
Logs of the hand auger borings are attached. As seen in the boring logs, HA-1 went to a
depth of 1.8 feet before hitting refusal on wood and the other two terminated at a depth of
5 feet(the maximum reach of the hand auger). Photographs of the final hand auger depths
are shown in Photos 3, 4, and 5. The borings indicate that the backfill soils comprise a 6-
inch layer of topsoil overlying silty lean clay with varying amounts of sand and gravel.
The material becomes coarser with depth, especially at HA-3 where the soil is classified
as sand with silt from a depth of 4 to 5 feet. No saturated soil was encountered, but was
classified as moist. The wood encountered in HA-1 was likely the timber tie-back. The
wood of the tie-back appeared to be in good condition because the samples that were
recovered from the auger were relatively well-preserved and the auger could not
penetrate all the way through it. If the tie-back had been rotted, the auger should have
been able to pass through without significant effort.
The condition of the individual timbers on the face of the wall is poor. Although the
timbers are treated, the wood has undergone moderate degradation due to wood rot. This
is probably due in part to the backfill soil behind the wall holding moisture next to the
timbers. With the wood also having access to oxygen from the face of the wall, the
timbers have been subjected to decay. Additionally, there is normal decay that occurs in
timbers that are 20 or more years o1d. One result oi the wood deterioration is thal some of
the pins connecting the face timbers and especially those joining the tie-backs to the face
timbers have had their effectiveness decreased significantly. In other words, the pins no
longer have any woo.d material left to hold onto in some locations to tie the timbers
to�ether, as shown in Photo 6. The most observable evidence of this phenomenon is that
the wall has moved forward relative to the tie-backs, which have remained stationary
because they are not connected to the wall, as shown in Photos 7 and 8. Degradation of
the joints at the corners was also visible, as shown in Photos 9 and 10. Walls of this type
will likely creep forward without any effective reinforcement in the form of tie-backs or
geosynthetics and eventually will topple. We do not, however, believe that this is
imminent.
No other failure mechanism appears to be responsible for the movement of the wall other
than the degradation of the timbers and its impact on the connections. According to Mr.
Sundby, no seepage has been observed flowing from the wall. This is likely because no
permanent source of water is apparent as the driveway and house are located atop a
"ridge". Given that high pore water pressures are not present behind the wall, the only
role that water has played in the wall movement appears to be its role in the timber decay
process.
Computations
Hand computations, using the Rankine method of active earth pressures, were performed
to quantify the stability of the existing timber retaining wall and the proposed boulder
wall. The computations are attached. Only the southeast-facing portion of the main wall
was analyzed in the computations. We believe that the lower overall height of the second
wall on the west side of the driveway makes it less critical for stability.
The upper tier was analyzed for sliding and overturning, and shown to have a factor of
safety below one. This indicates that failure is occurring for both failure mechanisms
analyzed, which would explain the movement observed in the existing timber wall.
Although the factor of safety shown in the computations is far below one, the actual
factor of safety is likely near one because the benefit achieved by the pinned corners is
not accounted for in the analysis and the shear strength of the back�ll is likely higher
than the assumeci friction angle of 30 degrees (at low confining stress).
Computations were also performed for the proposed boulder wall. Although the design of
a replacement wall was outside the scope of this evaluation, the calculations were
performed to show the feasibility of a replacement wall at the site. In this case, the lowest
tier of a three-tier, un-reinforced boulder wall was analyzed. To account for the weight of
the upper two tiers (each measuring 3 1/z feet high and set back 7 feet), a 2H:1 V angle of
sloping backfill was assumed, though this approach is slightly conservative. The assumed
width of the wall was 2 feet, with the wall comprising 24- to 30-inch diameter fieldstone
boulders. Moreover, a granular backfill material was assumed.
The calculations for the proposed boulder wall show that the wall would be stable against
sliding (FS = 2.45). The factor of safety against overturning is acceptable according to
some recommendations and unacceptable according to others (FS = 2.46). Local building
codes may have a recommended factor of safety against overturning,.and this value
should be used. In any case, reinforcement of the backfill soil using geosynthetics will
raise the factor of safety to an acceptable value. Also, stability of the wall against bearing
capacity failure was not analyzed because the present soil loads, which will remain
1
roughly the same for the replacement wall, do not appear to have caused any bearing
capacity problems to date.
Recornmendations
It is recommended that the existing retaining walls be replaced so as to minimize any
further impact on the driveway and possibly on the house. Replacement walls can be built
at the site.because the reason for the wall movement is the deterioration of the timbers
and the connections between them and not because the site as a whole appears to exhibit
any detrimental factors that would preclude a retaining wall from performing
satisfactorily.
We have analyzed the boulder wall option prepared by the contractor Mr. Sundby
proposes to perform the wall replacement work. Our computations of the boulder wall
depicted in his drawings reveal that the wall will be stable provided:
• adequate drainage is incorporated into the design by way of free-draining backfill
• backfill material is adequately compacted
• sufficient quantities of geosynthetics are used to reinforce the backfill soil
(preferably using a wrap-around facing)
� the design height and setback of the walls (tiers) is not exceeded.
Thank you for this opportunity to provide assistance on your project. If you have any
questions, please call Jedediah Greenwood at (952) 832-2773 or Steve Klein at
(952) 832-2809.
Enclosures
I hereby certify that this Report was prepared by me or under by direct
supervision and that I am a duly Licensed Professional Engineer under the
aws o e StatP of Minnes�ta.
,
� �
en M. Klein
Date: „��, Reg. No. 12759
! '
� 9/28/06
3587 North Shore Drive-Perennial garden for retaining walls
A plan was requested for vegetative screening for the rock retaining walls that
will be built. I am proposing a primarily perennial flower garden to occupy the
lower tier of the two-tiered retaining walls to be built.
There are primarily two criteria to determine the plants to be used: 1) height and
2) sunlight available.
There should be room for 2 or 3 rows of plants. I would propose a minimum
height of 30" for the back-most row that would be closest to the face of the
upper retaining wall. The other row(s) would be of lesser height.
The two-tiered walls will face primarily south and east. The plants in the south-
facing walls should receive close to full sunlight. The east-facing wall will be
harder to predict until the work is done, but will receive something between
partial and full sun.
Thus, our proposal is as follows:
Back row:
Balloon flower (Platycodon grandiflorus) 30-36"
Gold Daisy (He/iopsis helianthoides) 36-48"
Russian Sage (Perovskia atriplicifolia) 36-60"
Goldenrod (Solidago speciosa) 36+"
Black-eyed Susan (Rudbeckia fulgida) 30-36"
Summer Phlox (Phlox paniculata)30-48"
Cardinal Flower (Lobelia cardinalis) 30-48"
Blazing Star/Gayfeather (Liatris spicata) 36"
Daylily-many varieties (Hemerocallis altissima/H.aurantiaca )36-48+"
Tiger Lily (Lilium lancifolium) 48+"
Purple Coneflower (Echinacea purpurea)
Aster-multiple species (Aster oblongifolius/A.laevis) 12-36"
ButterFly flower (Asclepias tuberosa) 36"
Giant Delphinium/Pacific Hybrids (Delphinium elatum)48"
Bee Balm (Monarda didyma) 36-48"
Perennial sunflower (Helianthus multiflorus) 48"
Globe thistle (Echinops ritro) 36+"
Clematis (Clematis texensis) 48+" (Climbing)
Grasses
Japanese Silver Grass/Robustus (Miscanthus sinensis/sacchariflorus)48-72"
Moor Grass (Molinia caerulea) 36"
Red Switch Grass (Panicum virgatum) 48+"
Japanese Blood Grass (lmperata cylindrican 36"
.
J
. The forward row(s) would include:
� Perennial cornflower/mountain biuet (Centaurea Montana) 24-30"
Perennial bachelor button (Stokesia laevis) 24"
Conneticut Yankee Series Delphinium (12-18")
Iceland Poppies (Papaver nudicaule) 16-18"
Evening Primrose/Sundrops (Oenothera tetragona) 18-24"
Veronica Spicata 24-30"
Oriental Poppy (Papever orientalis) 24-36"
Maltese Cross (Lychnis chalcedonica) 24+"
Russell Hybrids Lupines (Lupinus) 24-36"
Maltese Cross (Lychnis chalcedonica) 24+"
Coral Bells (Heuchera sanguinea) 6-18"
Shasta daisy (Leucanthemumxsuperbum) 24-36"
Bellflower (Campanula persicifolia) 6-12"
Astilbe (Astilbe chinesis/Astilbe x arendsi�) 12-36"
Columbine (Aquilegea x hybrida) 24-36"
/ris-bearded 24-36"
Gaillardia grandiflora 16-24"
Lilly of the Valley (Convallaria majalis) 6"
Prairie smoke (Geum triflorum) 12"
Hosta (Hosta hybrids such as H. sieboldiana and H. tardiana) 24-36"
Chrysanthemums (Chrysanthemum x morifolium) 12-36"
Evening Primrose/Sundrops (Oenothera tetragona) 18-24"
Coreposis grandiflora/C. Helianthoides 12-30"
Also to consider is the bloom season, and the plants proposed would provide a
mixture from early blooming to late-blooming varieties. In addition, by
alternating grasses into the back row, along with several flowers that have seed
heads through the winter, there would be vegetative screening of the walls year
round.
I have personal experience, and own, all of the flowering perennials listed
above. In addition, the grasses are all recommended for this zone.
I believe these plantings will provide an aesthetically pleasing mix throughout
the year and accomplish the desired visual softening of the rock walls.
Sincerely,
Steve Sundby
Flowers we have used/could use
Balloon fiower (Platycodon grandiflorus) 30-36"
Perennial cornflower/mountain bluet (Centaurea Montana) 24-30"
Perennial bachelor button (Stokesia laevis) 24"
Conneticut Yankee Series Delphinium (12-18")
Iceland Poppies (Papaver nudicaule) 16-18"
Roses
Evening Primrose/Sundrops (Oenothera tetragona) 18-24"
Gold Daisy (Heliopsis helianthoides) 24-30"
Veronica Spicata 24-30"
Russian Sage (Perovskia atriplicifolia) 36-60"
Lavender
Goldenrod (Solidago speciosa) 36+"
Black-eyed Susan (Rudbeckia fulgida) 30"
Oriental Poppy (Papever orientalis) 24-36"
Summer Phlox (Phlox paniculata)
Peony (Paeonia)
Cardinal Flower (Lobelia cardinalis) 24-48"
Russell Hybrids Lupines (Lupinus) 24-36"
Maltese Cross (Lychnis chalcedonica) 24+"
Blazing Star/Gayfeather (Liatris spicata) 36"
Coral Bells (Heuchera sanguinea)
Daylily-many varieties (Hemerocallis altissima/H.aurantiaca )36-48+"
Tiger Lily (Lilium lancifolium) 48+"
Purple Coneflower (Echinacea purpurea)
Shasta daisy (Leucanthemumxsuperbum)
Bellflower (Campanula persicifolia) 6-12"
Astilbe (Astilbe chinesis/Astilbe x arendsii) 12-36"
Aster-multiple species (Aster oblongifolius/A.laevis) 12-36"
ButterFly flower (Asclepias tuberosa) 36"
Columbine (Aquilegea x hybrida) 24-36"
Giant Delphinium/Pacific Hybrids (Delphinium elatum)48"
/ris-bearded 24-36" �
Gaillardia grandiflora 16-24"
Lilly of the Valley (Convallaria majalis)
Bee Balm (Monarda didyma) 36-48"
Perennial sunflower (Helianthus multiflorus) 48"
Prairie smoke (Geum triflorum) 12"
Hosta (Hosta hybrids such as H. sieboldiana and H. tardiana) 24-36"
Globe thistle (Echinops ritro) 36+"
Clematis (Clematis texensis)
Chrysanthemums (Chrysanthemum x morifolium) 12-36"
Grasses
Japanese Silver Grass/Robustus (Miscanthus sinensis/sacchariflorus)48-72"
Moor Grass (Molinia caerulea) 36"
Red Switch Grass (Panicum virgatum) 48+"
Japanese Blood Grass (Imperata cylindrican 36"
Bulbs