4.2 Log House Landing Concept Plan 20160526 (1)w ater
ecology
c o mmunit y
LOGHOUSE LANDING
BOAT RAMP STABILIZATION
CONCEPT PLAN
5/26/2016
DRAINTILE PIPE WITH STABLIZED OUTLET
CONCRETE PAVEMENT ANCHORS AND
DRAIN TILE CENTERED BETWEEN JOINTS;
PER MNDOT STANDARD PLAN 5-297.235
(32) 12’ WIDE CONCRETE PLANKS;
SUPPLIED BY MN DNR; ANGLE RAMP
DOWNSTREAM 14˚ OF PERPENDICULAR
(SEE ATTACHED DNR STANDARD DETAIL)
- INSTALL PRIOR TO CONCRETE RAMP
10” DEPTH DRESSER (OR =) AGGREGATE
SPILLWAY OVER COMPACTED FILL;
3-4” DIA. ABOVE DRAIN OUTLET;
6” DIA. BELOW DRAIN PIPE OUTLET
STABILIZE WASHED OUT FOOT
PATH WITH 36” WIDTH ROUGH CUT
STONE STAIR - INSTALL PRIOR TO RAMP
OVER GABION ANCHOR BASKETS
BUILD UP GRADE (APPROX. 6”) TO DIRECT
WATER AWAY FROM TOP OF RAMP
10” REINFORCED CONCRETE DRIVE RAMP,
12’ WIDTH - TOOLED, GROOVED SURFACE;
EXCAVATE RAMP AREA 40” -
IMPORT 30” COMPACTED FILL
STABILIZE ROADWAY BANKS WITH 18-36”
BOULDERS OVER GEOTEXTILE FABRIC;
SEED DISTURBED SLOPES WITH NATIVE
SEED MIX AND NETLESS FIBER BLANKET
ST. CROIX RIVER
24%
13%
2%
cross-
slope
EROSION CONTROL
NETLESS FIBER ROLL
CONCRETE PAVING JOINTS AT 15’ O.C.
REMOVE BOULDERS AND STUMP FROM
RAMP AREA PRIOR TO CONCRETE WORK
INCREASE RAMP WIDTH 2-3’ AT OUTSIDE
RADIUS - PER SITE CONDITIONS
DISTURBANCE AREA BELOW OHW -
616 SF
NOTE: SITE EROSION CONTROL WILL CONSIST OF FIBER ROLLS
ABOVE OHW AND SILT CURTAIN AROUND UNDERWATER
EXCAVATION AREAS. SEE ATTACHED DETAIL FOR PROPOSED
EXCAVATION DEPTH OF PLANK INSTALLATION.
DRAIN TILE AT PERIMETER OF
CONCRETE RAMP
NOTE: EOR HAS DEVELOPED THIS PLAN AS A
CONCEPT FOR RAMP STABILIZATION ONLY. FINAL
DIMENSIONS, MATERIALS, AND METHODS FOR
CONSTRUCTION SHALL BE DETERMINED BY THE
CONTRACTOR AND THE CITY OF SCANDIA.
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