HomeMy WebLinkAbout83-1933 - Stormwater Management Drainage002'STORMWATER MANAGEMENT
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DESIGN AND CONSTRUCTION NOTES:
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1, THE PURPOSE OF THIS PLAN IS TO DEPICT THE DESIGN AND LAYOUT OF THE
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STORMWATER DRAINAGE SYSTEM ONLY. THE PROPOSED WATER AND SEWER SERVICES SHALL
BE PSFRMITTED BY OTHERS AND IS SHOWN FOR INFORMATIONAL PURPOSES ONLY. THE
CONTRACTOR WILL COORDINATE THE RELOCATION OF WATER, SEWER, GAS, AND ELECTRIC
TELEPHONE SERVICES WITH THE TOWN AND PRIVATE UTILITY COMPANIES.
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2. THE CONTRACTOR SHALL GRADE THE DRIVEWAY SO THAT STORMWATER RUNOFF IS
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COLLECTED AT THE SLOT DRAIN. ALL RIM AND INVERT ELEVATIONS ARE RELATIVE TO
THE PROPOSED INLET RIM ELEVATION.
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3. ALL ROOF LEADERS SHALL BE DIRECTED TO THE GALLEYS WITH
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A MINIMUM SLOPE OF 1% WHICH SHALL BE MAINTAINED FOR ALL DRAINAGE DISTRIBUTION
LINES.
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4. THIS PLAN DOES NOT DEPICT DEPICT THE EXACT LOCATION OR SIZE OF
SURROUNDING
EXISTING UTIL4TIES ON THE SITE OR WITHIN THE STREET. IT IS THE CONTRACTORS
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RESPONSIBILITY FOR VERIFYING AND RECORDING THE LOCATION OF ALL UTILITIES.
ORNTIG Associates
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5: THE CONTRACTOR SHALL CONTACT THE CITY FOR THE MARKING OF EXISTING :
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MUNICIPAL- UTILITIES, AND SHALL ALSO CONTACT DIG --SAFE AT 1-888--344-7233;
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FAX 1-800-322-:4844. DIG—SAFE MUST BE NOTIFIED AT LEAST 72 HOURS PRIOR
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TO EXCAVATION.
E-tnafl:.Dan—orwig@hotmaU.com
STORMWATER
MANAGEMENT
6. ALL WORK PERFORMED AS A PART . QF.. THI.S. PROJECT SHALL CONFORM TO THE
PLAN
STANDARD SPECIFICATIONS AND REGULATIONS OF THE TOWN OF YARMOUTH AND TO
AMENDMENT
ALL APPLICABLE LOCAL AND STATE REGULATIONS...
CONDITIONS
7. THE CONTRACTOR SHALL SUPPLY ALL PIPING, STRUCTURES, MATERIALS, AND
NO. REVISION DATE
APPURTENANCES, NECESSARY TO COMPLETE THE STORMWATER DRAINAGE :SYSTEM
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AS INDICATED ON THE PLAN.
8. THE TOWN OF YARMOUTH RESERVES THE RIGHT TO INSPECT ALL PRIVATE.
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FACILITIES DISCHARGING TO MUNICIPAL FACILITIES.
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9. DURING EXCAVATION AND CONSTRUCTION OF PIPES AND STRUCTURES,
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TRENCHES MUST BE ADEUATELY BRACED TO PROTECT AGAINST CAVE ---IN AND
SHALL BE ALL LOCAL AND STATE REGULATIONS.
10. PROPERTY LINES ARE BASED ON A SURVEY PLAN BY BSC ENGINEERING,
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PLOT PLAN DATED JUNE 29, 2012.
11, ALL EXISTING UTILITIES SHALL BE CUT AND CAPPED AT THE MAIN IN THE STREET.
12. DURING INSTALLATION OF CRUSHED STONE BED, IF BLUE CLAY OR OTHER UNSUITABLE
MATERIAL IS ENCOUNTERED, THE CONTRACTOR SHALL REMOVE 'AND BACKFILL WITH
CRUSHED STONE.
13. ALL PERFORATED PIPE SHALL BE ENCASED IN A MIN. OF 12" CRUSHED STONE.
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"CRAWL.
SPACE"
36" ADS INV.
ELEV. =
TOP OF 5LA8
ELEV.= 7.69'
_BOT OF FOOTING_
ELiV.= 6. 5
NOTE:
FEMA REQUIREMENTS FOR FLOOD VENTS AS RELATED TO
THIS PROJECT ARE AS FOLLOWS:
1) 1" OF VENT FOR EVERY SF. OF ENCLOSED AREA SUBJECT
TO FLOODING & A MINIMUM OF TWO OPENINGS:
4,357 SF, OF AREA X 1"= 4,357 SI. REQUIRED
2) SMART VENT #1540-521 IS DESIGNED FOR PROVIDING
800 SF. OF AREA.
3) DESIGN THREE FLOOD VENTS EACH USING TWO X1540-521
WHICH PROVIDES 1600 SF. (800X2=1600SF.)
4) THREE FLOOD VENTS PROVIDES A TOTAL OF 1600 SF.X3=
4800 SF. WINCH IS OVER THE REQUIRED 4,357 SF. MIN_
5) SEE SITE PLAN FOR LOCATION OF THREE FLOOD VENTS
GRANITE BLOCK RETAINING WALL
(SEE SITE PLAN)
RATED 0 400 SF. EA.=1600 SF.
WITH WATER TIGHT COLLAR AS PER
MANUFACTURERS SPECIFICATION
(STAINLESS STEEL)
FEMA FLOOD VENT CROSSECTION FOR CRAWL SPACE
N.T.S.
FLOOD WATERS
INLET & OUTLE�
CONTROLLED BY
SMART VENT (4—##1540-520)
36" ADS INV
ELEV. = 7-5
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STORMWATER MANAGEMENT GUIDELINES:
WHILE THIS PROJECT IS NOT REQUIRED TO MEET STORMWATER MANAGEMENT STANDARDS
IT DOES FOLLOW THE GUIDELINES AS RECOMMENDED BY DEP.
STORAGE:
SIX (6) PRECAST CONIC. GALLEYS (4'X4'X4') = 64X6=384 C.F.
CRUSHED STONE: (3/4"--1 1/2" WASHED STONE)
1'X8'X12' = 96 C,F.X40%=38.4 ( 1' OF STONE UNDER SYSTEM)
2'X4'X40' X 40% = 128 C.F. (2' OF STONE AROUND SYSTEM)
TOTAL STORAGE PROVIDED =384 +38.4 + 128= 550.4 C.F.
REQUIRED STORAGE=12,696 S.F.X,0417(1/2'RULE)= 529.42 C.F.
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DRAINAGE
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DRAINAGE CALCULATIONS: SYSTEM#2
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/ STORMWATER MANAGEMENT GUIDELINES:
WHILE THIS PROJECT IS NOT REQUIRED TO MEET STORMWATER MANAGEMENT STANDARDS
CONCRETE BOUND ��� IT DOES FOLLOW THE GUIDELINES AS RECOMMENDED BY DEP.
FOUND & HELD ��•
STORAGE:
TEN (10) PRECAST CONIC. GALLEYS (4'X4'X4') = 64X10=640 C.F.
CRUSHED STONE: (3/4"-1 1/2" WASHED STONE:)
1'X8'X20' = 160 C.F.X40%=64 ( 1' OF STONE UNDER SYSTEM)
4j0 2'X4'X52' X 407 = 166.4 C.F. (2' OF STONE AROUND SYSTEM)
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TOTAL STORAGE PROVIDED =640 +64 + 166.4= 870.4 C.F.
REQUIRED STORAGE=18,432 S.F.X.0417(1/2"RULE)= 768.61 C.F.
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WF#9
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RUSHED STONE
/4" - 1 1/2' (TYP)-
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VIF#81
FILTER FABRIC OVER
3' OF PEAST❑NEI
ISOLATED
VEGETATED
WETLAND
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TYPICAL GALLEY & SUBSURFACE DRAINAGE SYSTEM
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* NOT TO SCALE
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PROJECT: O
316 GREAT
ISLAND ROAD,
W. YARMOUTH,
MA.
Cr IENT:
MR.. & MRS.
PETROWSKI,
316 GREAT
ISLAND ROAD,
W. YARMOUTH,
M.A.
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ORNTIG Associates
Engineering
Planning & Surveying
Landscape Architecture
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GALLEY
Duxbury, MA 02331
Phone: (781)934-6039
E-tnafl:.Dan—orwig@hotmaU.com
STORMWATER
MANAGEMENT
DRAINAGE
PLAN
SITE PLAN
AMENDMENT
,•{.-•' , �,
CONDITIONS
FOR SE 83-1933
NO. REVISION DATE
4.25/A
ISOLATED :
TYPICAL GALLEY & SUBSURFACE DRAINAGE SYSTEM
f VEGETATED `•'•'�'
* NOT TO SCALE
` �, WETLAND - -
' �W -
/ 5 WETL`QND
r" B 7UTT❑M OF
�— GALLEY ` 1' (TYP)
❑E ;E�'SI!�E,'"'•• '!-:4 4'X4'X4' L EY
b `�`� �7 PRECAST C GA LE
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72
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PROJECT: O
316 GREAT
ISLAND ROAD,
W. YARMOUTH,
MA.
Cr IENT:
MR.. & MRS.
PETROWSKI,
316 GREAT
ISLAND ROAD,
W. YARMOUTH,
M.A.
DRAWING TITLE:
DRAINAGE
i '-tl-rte-,:•'• i � 6 ,
I'R011I:SSIONAL
3
DRAWING NO.
— D,C.ORWiG 1"=20` 6-29-2013
DRAWN BY PR NtARY SCALE DRAWING DATE
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ORNTIG Associates
Engineering
Planning & Surveying
Landscape Architecture
9 South Pasture Lane
P.O. Box 2132
Duxbury, MA 02331
Phone: (781)934-6039
E-tnafl:.Dan—orwig@hotmaU.com
STORMWATER
MANAGEMENT
DRAINAGE
PLAN
SITE PLAN
AMENDMENT
TO ORDER OF
CONDITIONS
FOR SE 83-1933
NO. REVISION DATE
DRAWING TITLE:
DRAINAGE
i '-tl-rte-,:•'• i � 6 ,
I'R011I:SSIONAL
3
DRAWING NO.
— D,C.ORWiG 1"=20` 6-29-2013
DRAWN BY PR NtARY SCALE DRAWING DATE