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HomeMy WebLinkAboutDrainage report summary s e Terra En�ineering,lnc. cNi�Engneering Land Plannhig•Consultlng TERRA ENGINEERING 4203 NORTH SHORE DRIVE 10/11l2005 PREPARED BY: MATT PAVEK, PE DR�►IN�►►GE REPORT SUMMARY STORM E1/ENT EXISTING RUNOFF(EAS'� PROPOSED RUNOFF(EASTj CFS CFS 2-YR 0.30 0.16 10-YR 0.59 0.38 100-YR 0.89 0.70 6001 Glenwood Avenue • Minneapolis, Minnesota 55422 • 763 593 9325 • Fax: 763 512 0717 Terra Engineering,Inc. ctia��a DATE: lO 1� �� FILE: �►,a a�u�•c«,�,� TRANSMITTAL - To: I�� �� �2� � o�-.I�, S'� � �� �� � � � 2 91 UerU��, ��, ��ti� . �N �'�f3� We are sending you Atiached _ Under separate cover via The following items: COPIES DATE NO. DESCRIPTION 1 � �� O�.a � THESE ARE TRANSMITTED AS CHECKED BELOW: For your approval For your information As requested For your review&comment REM . � �- �( ����� � .!� ��� �-�- ,�1� Q �� , s 4 �� COPY TO: ENCLOSED: TRANS.ONLY BY: � �� 6001 Glenwood Avenue • Minneapolis, Minnesota 55422 • 763 593 9325 • Fax: 763 512 0717 , \ , •,,\ .i , � \ � ••. %9h9A � �O '� � �97U.3 .. X ..� :��� � f ti �666 �RE / �1 . %8A 96s.7x %'••. ,y ••, � . ,. x X4fi67�.. . . . `.�54.3 ' . / T 6 �.. `•�` � xsbe.s'` '� '�•, ,.�a� � �.. --��. .,�, p,G `.?c9s� . / , ��r� -•,��� tt •� VQ t .%857.9' � . � �'' •' -..X44475 ..�j?;. '.9�: 9S�fi, '�g963X '` �' w ' / '` } .t. �"� � � �q9� : ,���t .t/ .�` .. .�g9.4 /�'• '95�$.4K ; : r . •., v..•�-. : , •.. --...... -�� GE . , '��:... , : ± S X,,�.. i ,�x EXISTING DRAINA , ; � ' ���..... ...�,. `3} ...... • �'••. .. .....-�.�.... ; �' ee n.j '•........ "'...:�>':: . , -;. ; A EXISTING ; '-•------'4 � .. • �s2.ex....._... •• � H�USE '.•........ / -..,..., :•.: � .................... .. �...__. ....t\,� ���;......._........ '�.`.,.-...... !� �;�; 22�4 sF �MPaZwou� . ., ..,. ........�.-, - ' ' S931 SF PERVIOUS .. � . __._..... � �•... .....••- 9S83X ` ,., / '.-.. .,.._�. � .,. -�...� . , \..� -... r.... l ; , ...., ?.:c �2 ';•. 94 X �� ..................�................, . � ...� — — — — — — — — ., ., , -............. +• ',r" g•yv .:, ..... 95QL ......, ..._, . ; . -... � �yAb' .. ^, � . - +X95L `, ••, i ,,g0 , '::•�:; . Q4s3 DR , xs 9.8, . Q ,`'�♦ `r�'. L ASJ�`J ,'GRAtl£1 %9483 ' \ /. � 9�g�' 9 qO.�.�' %9�b.t � . .� •� < 949.1 GFE=9 6A •�• \ GARA '`p ����>+� X948.3 + �:n : • •y : : ; X949. .,�...;...._ . }qo- %944�5 : /i � : � . ., :% � pQ � . �P�Nr .. X94.kj5 �`., �' EX INIi FIDU � �i� X947.6 •/ A X FFE 38 / 0'p c'.t•' ' X939.8 � \'�,s''. ; / .x � 7t94&6 1t9�I�� �94Q9 990.9X '.,� : • ��.�'✓ ; Z �i.: Q Y913.4' . ?:.�0 SE• '-S ��15 ;�94&9X �QV / y_ �\.947.t% N S.�Zc�G '\ .<;''•.'� r, � y1 ��9 . .7f9��i,".�tL6 '� 9494X'` � •�/�j�� �'�b�'`,''• :�`, c�c LEGAL DESCRIPTION� /� �'• �`•'� �� ': PART ❑F LOT 3, ORCHARD .q��, . ,v '. . %946.g�....... PATID F`J.Opy . . ��. �, . . BEACH, HENNEPIN C�UNTY, MN, �'� •� ~ •"941A�-....•��'�'`•..• . ADDRESS 4203 N�RTH SHORE DR, �-9h' �;:�'.'`:,_� „ .. PID# 7-117-23-43-0008 �'�"—�.'��` �' LOT AREA = 45750 SF/ 1,05 AC �k�3 O!�`a� os`.,..... ,•.. � N�TE — SURVEY IS SUBJECT TO • CHANGE PER EASEMENT OR � �S TITLE INFORMATI�N � 9 , I I'���n� l�� �o��i/�� . � 2- �� ........... .. .. .... _ _ __ _ _ . ... . . . _ _ _ _. . ...... .... __ _ _ . .. __ _ . . .... . _ _ _. ......... . ... � � EXISTING DRAINAGE AREA (FLOWS TC� EAS T) . __ . __ _ _ _ _ . __ _ _ _ __ __ _ _ _ ___ _ __ _ __ ___ _ __ _ ____ '� ���� PROPC)SED DRAINAGE AREA (FLC�WS TC� E/�ST) ,� -- � ..-�.,.., `� y Reach; atl Dratna e Dla ram for 4203 NORTH SHORE DRIVE ti�t���' ��..1�{C; 9 9 `t j �,,.,.,,�, Prepared by Terra Engineering Inc. 10/11/20d5 `"'"`�f HydroCAD�7.00 s/n 001544 O 1986-2003 Applied Microcomputer Systems 4203 NORTH SHORE DRIVE Type H 24-hr Rainfal1=2.80" Prepared by Terra Engineering Inc. Page 2 HydroCAD�7.00 s/n 001544 �1986-2003 Applied Microcomputer Systems 10/11/2005 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-2�method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: EXI3TING DR�4INAGE AREA(FLOWS TO EAST) Runoff Area=8,145 sf Runoff Depth=1.06" Flow Length=150' Tc=12.8 min CN=81 RunofF-0.30 cfs 0.016 af Subcatchment 2S: PROPOSED DRAINAGE AREA(FLOWS TO EAS Runoff Area=6,177 sf Runoff Depth�0.70" Flow Length=80' Tc=9.4 min CN=74 RunofF0.16 cfs 0.008 af Total Runoff Area=0.329 ac Runoff Volume=0.025 af Average Runoff Depth =0.90" 4203 NORTH SHORE DRIVE Type ll 24-hr Rainfa11=2.80" Prepared by Terra Engineering Inc. Page 3 HydroCAD�7.00 s/n 001544 �1986-2003 Applied Microcomputer Systems 10/11/2005 Subcatchment 1S: EXISTING DRAIN/4GE AREA(FLOWS TO EASTj Runoff = 0.30 cfs @ 12.05 hrs, Volume= 0.016 af, Depth= 1.06" aunoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt= 0.05 hrs Type II 24hr R�infa11=2.80" Area (sfl CN Description 2,214 98 Paved parking &roofs �,931 74 >75% Grass cover, Good, HSG C 8,145 81 Weighted Average Tc Length Slope Velocity Capacity Description __�in) (feet) (ft/ft) (ft/sec) (cfs) 12.8 150 0.0800 0.2 Sheet Flow, Grass: Dense n= 0.240 P2�2.50" Subcatchment 2S: PROPOSED DRAINAGE AREA(FLOW3 TO EASTj Runoff = 0.16 cfs @ 12.p2 hrs, Volume= 0.008 af, Depth= 0.70" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Tqpe II 24-hr Rainfa11=2.80" Area_(sfl CN Description 6,177 74 >75% Grass cover, Good, HSG C Tc Length Slope Velocity Capacity Description �in (feet) (ft/ft) (ft/sec) (cfs) 9.4 80 0.0500 0.1 Sheet Flow, Grass: Dense n= 0.240 P2=2.50" � � �n- � �- : � � �� :::::: EXISTING QRAINAGE AREA (FL4WS TCJ EASY� : �:���� PROPOSED DRAINAG� AREA (FLOWS TO EAST) ,� -; �--`�.--, ySt�b�;a�r Reach ond �j,,,,���;� Drainage Diagram for 4203 NORTH 3HORE DRNE `� ;f �,. ;: Prepared by Terra Enginsering Inc. 10l11/2005 `'�""""` '""'"� HydroCADC�7.00 s/n 001544 O 1986-20Q3 Applied Microcomputer Systems 4203 NORTH SHORE DRNE Type I!24-hr Rainfall=4.20" Prepared by Terra Engineering Inc. Page 2 HydroCQ►D�7.00 s/n 001544 (�1986-2003 Applied Microcomputer Systems 10/11/2005 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: EXISTING DRAINAGE AREA(FLOWS TO EAST) Runoff Area=8,145 sf Runoff Depth=2.11" Flow Length=150' Tc=12.8 min CN=81 Runoff=0.59 cfs 0.033 af Subcatchment 2S: PROPOSED DRAINAGE AREA(FLOWS TO EAS Runoff Area=6,177 sf Runoff Depth=1.59" Flow Length=80' Tc=9.4 min CN=74 Runoff=0.38 cfs 0.019 af Total Runoff Area =0.329 ac Runoff Volume=0.052 af Average Runoff Depth = 1.89" 4203 NORTH �HORE DRIVE Type 1124hr Rainfall=4.20" Prepared by Terra Engineering Inc. Page 3 HydroCAD�7.00 s/n 001544 C�1986-2003 Applied Microcomputer Systems 10/11/2005 Subcatchment 1S: EXISTING DRAINAGE AREA(FLOWS TO EASTj Runoff = 0.59 cfs @ 12.05 hrs, Volume= 0.033 af, Depth= 2.11" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.p0-20.00 hrs, dt= 0.05 hrs Type II 24hr Rainfa11=4.20" Area (s� CN Descriqtion 2,214 98 Paved parking �roofs 5 931 74 >75% Grass cover, Good, HSG C 8,145 81 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ff/ft) (ft/sec) (cfs} 12.8 150 U.Q800 0.2 Sheet Flow, Grass: Dense n=0.240 P2=2.50" Subcatchment 2S: PROPOSED DRAINAGE AREA(FLOWS TO EAST) Runoff = 0.38 cfs @ 12.01 hrs, Volume= 0.019 af, Depth= 1.59" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24hr Rainfa11=4.20" Ar�a (sfl CN Description 6,177 74 >75% Grass cover, Good, HSG C Tc Length Slope Velocity Capacity Description (min) (feefl (ft/ft) (ft/sec) {cfs) 9.4 80 0.0500 0.1 Sheet Flow, Grass: Dense n= 0.24Q P2=2.50" • � l90 - 7� : � � .. EXISTING DRAINAGE AREA (FLaWS TU EAST) . . _ _ _ . _ _ __. _ _ __ __ _ _ ___ _ ___ _ __ _ . ,'�::. �� : :.: PRUPOSED DRAINAGE AREA (FLOWS T4 EAST) �� -�; �--�.. : ySUb��r ReaGh on L���i Drainage Diagram for 4203 NORTH SHORE DRNE `�� r �,,,..,,, ,,, Prepared by Terra Engineering Inc. 10/11/2005 ` '"""'� � HydroCAD�7.00 s/n 001544 01988-2003 Applied Microcomputer Systems 4203 NORTH �HORE DRIV� Type I!24-hr Rainfa11=6.00" Prepared by Terra Engineering Inc. Page 2 HydroCAD�7.00 s/n 001544 �9986-2003 Applied Microcomputer Systems 10/11/2005 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: EXISTING DRAINAGE AREA(FLOWS TO EAST) Runoff Area=8,145 sf Runoff Depth=3.61" Flow Length=150' Tc=12.8 min CN=81 RunofF-0.99 cfs 0.056 af Subcatchment 2S: PROPOSED DRAINAGE AREA(FLOWS TO EAS Runoff Area=6,177 sf Runoff Depth=2.94" Flow Length=80' Tc=9.4 min CN=74 RunofF-0.70 cfs 0.035 af Total Runoif Area=0.328 ac Runoff Volume=0.091 af Average Runoff Depth =3.32" ' �P 4203 NORTH SHORE DRNE Type ll 24hr Rainfa11=6.00" Prepared by Terra Engineering Inc. Page� HydroCAD�7.00 s/n 001544 �1986-2003 Applied Microcomputer Systems 10/11/2005 Subcatchment 1S: EXISTING DRAINAGE AREA (FLOWS TO EAST) Runoff = 0.99 cfs @ 12.04 hrs, Volume= 0.�56 af, Depth= 3.61" Fiunoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfa11=6.00" Area (sf� CN Description 2,214 98 Paved parking &roofs 5,931 74 >75% Grass cover, Good, HSG C 8,145 81 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feefl (ft!ft) (ft/sec) (cfs) 12.8 150 0.0800 0.2 Sheet Flow, Grass: Dense n= 0.240 P2=2.50" Subcatchment ZS: PROPOSED DRAINAGE AREA(FLOWS TO EAST) Runoff = 0.70 c#s @ 12.01 hrs, Volume= 0.035 af, Depth= 2.94" Runoff by SCS TR-20 method, UH=SCS, Time Span=5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfa11=6.00" Area (sfl CN Description 6,177 74 >75% Grass cover, Good, HSG C Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 80 0.0500 0.1 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50" '\ , � \ f� � \ \ •1..•, X959A � �O x�I/ �743 x�,'b � � �'7Q i �, ° Rf %A7X y ...j y , .�+5., %9• X466.7'. � ~, ..Q 'X•9-.¢/ . X%29••.. �? � .'.��9.7 /�;�. •"P5:': yy7 •..��PV . I(997 '•-..,� e�� •...G.' tp � / y � '+, � P '` �.•` � � �.%5s�s `' . x9s9.�s `tA'�' . �'..4 ,��{' •••�.�x `� � � } f 't / 1 ;` . -...,, / � 9• ' p��, . � . �- �: 1%yJS9.4 $ �it 9SB.41t � I `l . . : v : i� ; ''+ � : : ,, '+..� ,. -- S %9939.,, � 946&% • �'+'• ' ,' QQ 2,�/, -.,,, ' �3•:,:�. , CONSTRUCT DRIVEWAY W ; .., •�:'� � 2% CROSS SLOPE TO ... ,.. .._ ... HOUSE NG ` ,.__....-REt�ven / ..... ._... ---- DIRECT D �X ._�•. RAINAGE T❑ WE Ry� •�f�� %" ..�� PR�vE Y.,.�Y J . � � ��,, ':.��3..... �... •,... ... -- ; 949 X / '•...� ..............."'... l �1 '"'D Yqg2,,'` �/ � �P�+ :?� 1 ""'•_ _ _� ,� . � -•., ��.....s3' -.....�.� ,,�. :• ;.. -. . .._... ,�o �`•:.. �.:� xe+aa^ � � XISTI R�I ••. - � PROPOSED DRAINAGE n -. ..;1r P . 71] BE ���� � � AREA TO EAST K AiC}i G 4.3 � L , SI�N'O� �V } y c�B�+ 6177 Sf q¢ '�l ���- ��•�� � , 0 SF IMPERVIOUS �9.1x �� F 6177 SF PERVIOUS �� GARAGE ':'S �''3{., X94fl3 •' xqs ; } .>,.. F- ��,�. � `{ )t949. ,d....:...,.- „ � � Lci• t : "� •.{ X947�5 r: ��' � � Qp . '/�A{, P�.<� X94% �i�'.. y5fl•x � '�'9 7(947b � ,, .� i / c9`� ....#�y��• . \•, ` / esa y xeas.s ���• �iaas ssae;x ./ : : � . Q Y9434� .;,�0�'h "r: �5�. ..,`�M �S� ' >>1• ' 94&9X NQ � ..��n�., �.t� ; NG � �� ��,ea�.ix �uN �5t� � ,�/ . - �ai'�4L6 ` E�' y� i ���g,�:,.`_''', ea9ax •. �jj' � ;��`�..'�, ;'� �oN� LEGAL DESCRIPTION� ��'�� -'���'•,`'•. •� �,.. X546.2•...., PATIO PART �F LOT 3, ORCHARD � `.: ;_; '' >. -. . BEACH, HENNEPIN CDUNTY, MN, . ,�., ~• O/,�/9 ••, ''"�,�. ��' •'"9a�'°'`'... 95"•� • ADDRESS 4203 NORTH SHORE DR, � ''';i:`•.+. rI�,�9C�N '..;�'•` ''�... • PID# 7-117-23-43-0008 "7'`9���'x9.�9.t.,,'•. A'-••. -�. •-. . L�T AREA = 45750 SF/ 1.05 AC °s``.`..`',.`... '''••••. NOTE - SURVEY IS SUBJECT TO �o p�I D�'�,`'`^c�� � CHANGE PER EASEMENT OR � TITLE INF�RMATION A Aa �«�� / �� �I��� ��1ti� �9�