HomeMy WebLinkAboutDrainage Details 7.29.2022 not stampedE
TOWARD SITE EXCAVATION
2" X 2" X 36 WOOD r%l
8' MAX. C.C.
MIRIFI SILT FENCE OR E
WD. POST
PLAN VIEW
WATER TOLERANT
PLANTS— MUST
TOLERATE DROUGHT
CONDITIONS AS WELL.
SEE PLANTING
SCHEDULE
POOLING ZONE —
DEPTH PER PLAN
LINE AND GRADE PER
PLAN VIEW
FILTRATION ZONE—
SAA 1'0 COIR FIBER WATTLE NTS 24 PLANTING MEDIUM
METHOD FOR JOINING SILT FENCE SECTIONS SOIL MATRIX REQ: �
50% MEDIUM SAND
POSITION END POSTS TO OVERLAP AS too 'I/�j�/ AABVE,ROOUNDMEACH POST AIT LEAST ABRI�FO�DS 20% COMPOST TOPSOIL
NATURAL GRADE
EXCAVATED TRENCH
COMPACTED BACKFILL
NOTE: �
1. EXCAVATE A 6" x 6" TRENCH ALONG SPECIFIED SILT FENCE LINE IMMEDIATELY AFTER
CLEARING AND GRUBBING IS COMPLETE AND INSTALL SILT FENCE.
2. UNROLL SILT FENCE ONE SECTION AT A TIME. POSTS SHOULD BE POSITIONED ON
DOWNSTREAM SIDE OF FENCE.
3. DRIVE POST INTO GROUND AND LAY THE TOE —IN FABRIC IN BOTTOM OF TRENCH.
BACKFILL TRENCH, AND TAMP GROUND AS SHOWN IN DIAGRAM ABOVE.
4. REMOVE SILT AND DEBRIS BEFORE ONE FOOT ACCUMULATION OCCURS AT THE
FENCE LINE.
PROPOSED
GRADE
i
PROPOSED
SWALE
DRAINAGE SWALE PROFILE SEC110N
SCALE 1= 20' HORIZ. do 1' = 5' VERTICAL
DRIVE POSTS TIGHTLY TOGETHER AND SECURE
TOPS OF POSTS WITH CHORD OR WIRE TO
PREVENT FLOW —THROUGH OF BUILT—UP
SEDIMENT AT JOINT. I NOTE: 36" DEEP SOIL
WHERE TREES
PROPOSED.
RECHARGE ZONE bobbob
COARSE SAND OR
GRAVEL
EIV11111111mum
4"O�SCH-40 PVC AT 2% MIN. /
FROM ROOF DRAINS
USE SIX INCH WHERE MULTIPLE LEADERS
GRASS LINED SWALE
NOT TO SCALE
0
2"HARDWOOD BARK
MULCH BETWEEN
PLANTINGS i
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NOT TO SCALE
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FILTER FABRIC LAWN
GRATE UNTIL LAWN
STABILIZES DRAINAGE DETAILS
ADJUSTING BLOCKS/H-20 RISER
MORTAR ALL COMPONENTS
(Type)
°°°°°°°° • .°�°�°�°�° � 4" MIN. PEASTONE
bee°°°°°°°°° AND MIRAFI 140NS
o3^'aovo o °o°o°o°o°
° °°°°°°°°° FABRIC OVER STONE
0 0 0 o c o 0 00
0
0�0�0 4'—O" X 6'0 00o00o00oo�
00
0 00
00
0
O H-20 o°o°0°0°0 cc
� 600 GAL. 00000000000
0 0 0 0
0 o LEACHPIT °o°o°o°o°
00 SHOREY OR EQUAL o00000000
0 0 0 0 0 0 0 0 0
00 000000000
oo00°000 0°0°0°0°0
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o�
DOUBLE WASHED STONE
1.5' MIN. AROUND PIT
& 6" UNDER PIT
NOT TO SCALE
#150 SOUTH STREET
SOUTH YARMOUTH, MA
fJ7�17\7�7�iI7
01,001
DATE: 7-29-2022
off 508-362-4541
fax 508-362-9880
downcope.com
wn cape engineering, inc.
civil engineers
land surveyors
939 Main Street ( Rte 6A)
YARMOUTHPORT MA 02675