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WEST UNIT COUNT - 32 (TOWNHOMES)
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DENSITYWEST
WEST AREA OF • :•'
\ • IWEST• •• •
IMPERVIOUS• .
WEST AREA OF •(66.20%)
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STORM SEWER DESIGN
WWA PROJECT NUMBER 205143.04
COMPUTATIONS
COUNTY ALBEMARLE DISTRICTRIVANNA
DESCRIPTION PAVILLIONS AT NORTH PANTOPS •PHASE II STORM DRAIN CC
SHEET 1 OF 1
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SITE AREA = 5.71 ACRES
UNIT COUNT = 32 NHOMES)
L WEST DENSITY = 6 UNI RE
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PAVILIONSIF THIS DRAWING IS A REDUCTION GRAPHIC CR
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' Amendment-9-08.dwg • 9124108
\ \ ; C, ;,- / / -� `-�"�___-____._._______'_____,_ \ \ `` NOTES: s - o
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` ,\ \ ! \ - -� % -- •--- -.. - - \.\ ..-.. _..._ A geot tody of
t I \ \ \ c l s he soils to b used in constructi g the Q N v v U
"`T'` I 1 ' 1 \ �, \. - \ \ \ \ _ _ - - ~` embankment cisawell as the embankmentefoundation must ben completed. N N to j
I 1 I i . n , 1 1 \ ., ` \ \.\. �, \ 1 \ / \ ` \, _�\ _ _�-__ ,rte'_-- \ `
:r }. I t \ \ _ - --• .._ _ - __ -�_ \`. .c A geotechnical engineer certification of the adequacy of the foundation o Q _
�, 1 1. ' <';. 1 �' \ \` `'\ \ \ -- -- --- '- / - _... _..._ __ , _ 11 \- _ ,- _.._ and soils to be used in the embankment is required before construction ai a� o
\ I l , \ \, \ /\ \ o \
} ' i f i \ ,'` -, N \ \ : -' \.` -- - r- gins. Send all geotechnical reports to the County of Albemarle J =
\ \ I ! \ t , 1\ ► F.%f\ 1 \ \ ,\
\ \` \.. \.. ` \\ \� .� `---%� \ / \ \ , `\ \ \\ \ \ `' \ \ - � - -- \� ` - - \ \
'1 \ ` p 1 ,' `' -� \ \ Department of Community Development, 401 McIntire Road, Room 211, �,,, -� � N � �
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} t , .fi.� \, 111. ` \ \ _ I _-r S _ - - - ^ - \ Charlottesville Virginia 22902-4596, N
111 1 1 1 \ 1 r \ - _ - 6 \ V N C d d
\ \ �, \ \'''\ ` \ \ \. `- -' - �, /\ �\ \ \ \ \ -. _ 1.r.--11 "O _ geotechnical ins inspector must be resent to monitor the construction E L t1_ s
\ �� \ \ \ \%, \ \ :\ t \ \�_-____.____ „ / �, % \ \ \ _ ,/ `\ \ of the embankment and test compaction. The minimum compacted C
11 I,r 1 `� \ y S .� \ \ ! \ \ \ .� \ \ \ \ \- - � . - - - \ densit will be 95% with the moisture content within 2% of opt u O //���� N
11 11 //) \ , \ \ C.)1 Com` \ � \.. ':\I. , ,1. _ _ __ ._ _ \., Compaction reorts must be submitted to the above address. -
11
\ / 1 ..� \. \.�,..... O `t ' \ \ :\ \ -\ \ \ \ \ \. \, _ ! - ^• _ - -- _ _ \ \ embankment must be constructed in a manner to meet all the (ym
y' t 1 \ \ \ . \ .� `'d F `, \ \ \ \ \ \ \ / / \ 3. The emb a O s
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1 l 'o9 / s- ,� A uatic Bench
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! i ` /� ✓r� i �;� - -` . Of - ': _...... ............-..._ ........__ - 8„
/, i ' \ \1 .: / I i < /, , i�---," NOTE:-+ f' -I
,
\ ,I Z . / / _._ _._ .. ... Hand Wheel 1 O O ct
`, / \' �q/ \ + r 8�. i �' /� i - / / - ''moo - . __ -'- 1, VDOT Std. ST -1 Steps are to be provided
\ ter / \ �` l /.i o /mac _ - - 1.L .:.1 V -.. . J. 'J� ' Normal Water
- / - 4 - a- -- - - structure.
\ \\ . \ �/ \ \\; f ;, ar o �, _ in the s .V ..: L ..SV _ p ...i. . Elevation = 488.0
\/ / \\ ► / / // I / . a 4 -
„` _ _ 8 g
\ \� \ ``,\ /f/„�' /1^ \I j / ,�` �- �oF - _, ._ 2, It is the responsibility of the contractor II C�
� lil.� � �' .h _ is are watertight. Z `V �1L :�V '�L' ��� 'I�' � 12 Q a �
�. A -\\\ i \ / ;; /�' �/ / / / -� - J to insure that all join 9 ���� _
/ i t ► f.. '' .1 / / .� oma o I I 1-�
\ \ \/ •\ :.,\ \ /"` \ i ,.ILL I __ - Corrective measures will be the responsibility 11 _
J _ /' 0�0��0Cl-v�v 1, G -
N �.1. ;Ii `' %/ f i \- // w �/ - _ of the contractor. n .. a
/ \ :- 2.5 L.: v .FL.ti>, -.� . o �-
o
� 1i' / W O u
'I �\ ►` !l �\.: \ \I �� i •¢ � �`` f� � .'�•,-1 •, (�` .,..f/ l :kll� l//• i � .. '_ l -'- dw s for Rust Proof i O °' � ! (
u.il . / \\ \., / \� 11 ' ' s ':. t r `\, - / - 3. Contractor shall provide shop g
I , ;/ ��\ Q� h£ L•/// ( - \'�`''./.. / %.,' / / �� '� the outfall structure.
y' S m
ave
I j . // !, t�y' ` \ �' Support (D+T)�2 -- Q
l I I / Typical 10'x10' Planting Area
1.
° 4�
:,
11
I i` f % ;� %', PVC Co Concrete
etStandpipe .
„f � 1 / % � %' I � ,, II Ir �' rn� It.-�' It t• � I' , I-� I - I ' \ l Q
`•`)� •'M :\ "s�. �! I l F i / / 8 Perforated ° I W
` � ° Basin I *MAX J � �
/ /.\ �` .�, i ! 1 ( �; i' l/ /` / i ` �- Riser W/End Cap Rust Proof °
7, 5 Floor I BOTANICAL & MINIMUM WATER QUANTITY 0 Cd
\ >.. Yi: / s ., " 1 1 / / VDOT #1 Stone Valve Stem D ° ° i
i "icy a� t I I( 1 { 1/ \ `;.; i f j ° o -- --
' �' }I / 5 • , ° I KEY COMMON NAME j CALIPER DEPTH PLANTED X �
/ ' ) 1 ! l r I �\ ° 6 Gate Valve F 7
\ \ i \ \ A • \ / t I \ \ \ ! \ -� 1 /1 1/� \ "\ I �j / / ' / °o
I 11\ /. 1 k -- �--- \ / / I , / o ° VDOT 8 #6 Bars at NOTES: s Ps uda orus N A 3„ 290 ,--� Cd
\ -- --- - t, \ ! ` tone S I # 4 0 C t t
-� / ° S 6 Bars at
1 t 1 � r � ° ° Watertight ea ,� /, 1 Con rac or to reconfirm elevations of Aquatic Bench one week before I Flag Iri I / �- ►�
.p (------`�-4�, .;` , \ ,. \ 1 ! ! / ! /` 0 16 O.C. .... . ....... ..
1 Yellow s ,
- -- - I } d I } / ° ° r elevations The Aquatic Bench should be be .. ... I • r"'I
I \, •'. ..I / o ° planting to ensure grope _
! ,O 1^ ! \ q I 1 I 11 ` f / � / // ' ' V
/\ 1. / / i ° NOTES. between zero and one foot below the normal water surface elevation. IV Iris Vir inica N/A °J ! , / / 0 2. Plant all aquatic plants between April 1 and June 15, I Virginia Blue Flag 3 290I\. \I I 1 / I , / . / � �
\ / / o ° 1. Concrete shall be 4000 psi. I
• J I / I / ,..,,.. ,,, 3. Prior to planting re -spread three to six inches of topsoil in the areas I_.... -
1 I I /� / / "> ' / % 36 RCP Barrell
h laced in a trench then the sides of 'd tl d Ich such i N h L t m 11 N
1 1 I i I I .( I / / 7 / I °° L. If t o pipe Is p 12 beet
the cradle shall conform to the trench. to be planted. If insufficient topsoil exists, prove a we an mu I L up ar u e
{� ' ) I 1 ' i I l l i I r I l /J \` � ....
-\ \ that the combined depth of topsoil and mulch equals three to six inches. N Spadderdock I
t
/ : \�;....; N A 872
�. �o t t I \ I ; I i I � I � / � /-. /�`_,,��3� . •.;• ',: .4 ' •` i; +''',,�: 4. Any plant substitutions shall pbe approved by the County Water
s I / I C Scir us Validus I
/ ! I/ 1 " I 1 I I I I I .: '.. Concrete Craddle Detail Resource Official prior to planting SV P / 12
I
I �/ / Concrete Bose •' S Soft Ste
I I ! I I I I I I I 1 , \ (� ", I . 6° Class 53 DIP Pipe 1% Min. • . • , a _ _
I / I ` for Riser ' •- U.S.Plants to be placed on 18° centers. _ - -_.......
> � I II ! I I I .: ,'\. /.., ., r_ �� • ;. 1 .I m Bulrush I N A 872
r I
,. �' Z �\ I I I I I I i 1 1 1 I I / ,.� �: :�,.� •., JS:.,r 1 of *Plants must be planted in aquatic bench where
`/
`� I I I I I Y 1 . IS -6
I I 1 I 1I I! ( �..,�- 1-------_-'-----_. static water d h Is less than p cif,ed.
' rD SWM#3 A UATIC BENCH PLANTING DETAIL
depth s e '
- c� I I l ,� Y 1 I + 3p t 60I / V Set Valve In Conc. Base,
___-_
/ I 1 � I ;r i .. 1 1 X : 0 /'. B SWM 3 Dewa ,erin Pl e Detail (3,000 PSI Min.) 1 of 1 NOT --T0 .SCALE
/ I'/ , i ., / \ ti \t tl X\!, \\ ��, :11 „ -1 3 I , ! i ( I, I 1 of 1 NOT TO SCALE
.-Y / -�/. A' ::' / `� FaSC `f `-,� .1 - _V .-I:/ \_ ` I `�X` ' ! \I ,y '. \t � \ , N_� 1 \ \ \1 , ��A , 1 \ 1 I I ---