4.4 SR 02-21-2023 - Laserfiche WebLink

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RADIAL OR � \ �TRAPEZOIDAL CHANNEL � \� � - - - i / CROSS SECTIONAL VIEW �STORM WATER SHALL BE CONTAINED � TO THE CHANNEL / / � EXISTING GROUND PRIOR TO INSTALLING HEADWALL, USE CONCRETE SAW ANCHOR TRENCH INITIAL LEADING TO CUT MAT TO EXACT EDGE OF MAT 18", FILL AND SHAPE AND SIZE COMPACT ANCHOR TRENCH. INSTALL HEADWALL OVER MAT � ❑ ❑ ❑ ❑ ❑ Ci` ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ � ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ � ❑ ❑ ❑ ❑ ❑ �.: ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ % ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ �� MAXIMUMGRADE i� pppppppppppp PERMFGSPECIFICATIONS � ❑ ❑ ❑ ❑ ❑ ❑ C;` ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ � ❑ ❑ ❑ ❑ ❑ ❑ C��7 ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ �nnnnnnnnnnnnnnnnnn nnn PLAN CONCRETE MAT CONSTRUCTION NOTES: 1. GRADE OUTFALL AREA SO THAT WATER WILL FLOW DOWN THE CENTER OF THE CHANNEL AND BE CONTAINED TO THE CHANNEL. ALL SUBGRADE SURFACES PREPARED FOR PLACEMENT OF MATS SHALL BE SMOOTH AND FREE OF ALL ROCKS, STICKS, ROOTS, OTHER PROTRUSIONS, OR DEBRIS OF ANY KIND. THE PREPARED SURFACE SHALL PROVIDE A FIRM UNYIELDING FOUNDATION FOR THE MATS WITH NO SHARP OR ABRUPT BREAKS IN THE GRADE. 2. APPLY SEED DIRECTLY TO THE PREPARED SOIL PRIOR TO CONCRETE MAT INSTALLATION. USE SEED PER PROJECT SPECIFICATIONS. 3. PRIOR TO INSTALLING HEADWALL, ANCHOR TRENCH INITIAL LEADING EDGE OF MAT 18", FILL AND COMPACT ANCHOR TRENCH. INSTALL HEADWALL OVER MAT. 4. INSTALL CONCRETE MAT ROLLS. AVAILABLE WIDTHS ARE 5.5', 8', 10', 12', & 16' AVAILABLE IN CUSTOM LENGTHS. A CONCRETE SAW SHALL BE USED TO CUT THE MAT TO EXACT SIZE AND SHAPE. 5. APPLICATIONS WHERE OUTFALLS FLOW INTO RETENTION PONDS, EXTEND CONCRETE MAT A MINIMUM OF 3' BELOW LOW WATER ELEVATION. REV: 2/2017 c� CONCRETE MAT ver CONCRETE EROSION MAT OUTLET INSTALLATION DETAIL STANDARD PLATE N0. 2513