concept design san antonio river improvements project
concept design san antonio river improvements project
concept design san antonio river improvements project
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HISTORICAL MISSION (SOUTHERN) REACH<br />
SECTION - RIVER CHANNEL BOTTOM<br />
NOT TO SCALE<br />
DESIGN COMPONENT PROTOTYPES<br />
The <strong>concept</strong> <strong>design</strong> philosophy for <strong>project</strong><br />
components consists of three major elements:<br />
1. The <strong>design</strong> is to be natural in character.<br />
2. Materials are to be indigenous and “of the place”.<br />
3. Artists are to be included in the <strong>design</strong> process.<br />
This philosophy has been translated into a series of<br />
<strong>design</strong> component prototypes for the major <strong>river</strong><br />
components.<br />
River Channel and Edges<br />
1. River Channel Bottom<br />
2. Channel Slope Stabilization (slopes greater than<br />
3:1)<br />
3. Channel Bend Armoring (at outsides of <strong>river</strong><br />
meanders)<br />
4. Retaining Walls (slopes greater than 3:1)<br />
5. Grade Control Structures<br />
6. Tributary Outfall Structures<br />
56 SAN ANTONIO RIVER DESIGN GUIDELINES<br />
SHALLOW CHANNEL SECTION<br />
2/3 OF CHANNEL WIDTH<br />
12’ MIN<br />
24’ MAX<br />
3’ - 4”<br />
THALWEG<br />
1/3 OF CHANNEL WIDTH<br />
6’ MIN<br />
12’ MAX<br />
3’ - 4’ DEPTH<br />
SECTION - LIVE FASCINES SLOPE STABILIZATION<br />
NOT TO SCALE<br />
EROSION CONTROL<br />
BLANKET (BON TERRA C2<br />
MAT OR EQUAL)<br />
3-4” MOIST SOIL BACKFILL<br />
EXISTING GROUND<br />
FASCINE BUNDLE<br />
DEAD STAKE<br />
LIVE STAKE<br />
APPLY 3” DEPTH OF TOPSOIL TO SLOPE<br />
SURFACE PROR TO SEEDING AND<br />
INSTALLATION OF STABILIZATION MATTING<br />
LIVE BRANCH<br />
SEED AND COVER WITH STABILIZATION<br />
MATTING BETWEEN EACH LAYER<br />
TOP OF WALL SHALL BE 6” ABOVE<br />
BANKFUL ELEVATION<br />
SECTION - LIVE BRANCH LAYERING WITH SLOPE STABILIZATION<br />
NOT TO SCALE<br />
3’ - 0”<br />
LIVE STAKE<br />
DEAD STAKE<br />
3’ - 0”<br />
LIVE FASCINES BUNDLE SLOPE STABILIZATION<br />
NOT TO SCALE<br />
8”<br />
LIVE CUTTING<br />
TWINE<br />
(DEAD MATERIAL ALLOWED<br />
IN 4” DIA. CORE)<br />
LIVE CUTTING<br />
KEY IN STABILIZATION<br />
MATTING MIN. 1’-0”<br />
PLANTING<br />
COMPACTED BACKFILL<br />
TAMP IN 12” LAYERS<br />
UNMORTARED ANGULAR BANK<br />
ROCKS 3’X4’X5’<br />
TOP OF ROCK SET AT<br />
CHANNEL INVERT<br />
PLAN<br />
SECTION
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