Civil · C-FNEK9

Curb Opening Catch Basin

Materials

Concrete Reinforced Concrete Steel EIFS / Plaster / Stucco

Elements

Walls Floors / Slabs Drainage Site / Paving Anchors / Embeds Connections / Plates Reinforcing Roof / Floor Openings

Connections

Rebar Splice / Development Embed Plate

About this detail

A standard curb opening catch basin comprises reinforced concrete walls and slab, steel manhole frame and cover, and face plate assembly. Wall and slab reinforcement utilizes number four bars at twelve inches on center each way, supplemented by dowels at corners and at seven foot intervals along the back wall. Structural data tables specify wall thicknesses, reinforcement requirements, and dimensions for varying widths and depths. Connector pipes tie into the basin walls with monolithic connections or specified clearances.

STANDARD PLAN SHEET 1 OF PROMULGATED BY THE PUBLIC WORKS STANDARDS INC. GREENBOOK COMMITTEE 1984 STANDARD PLANS FOR PUBLIC WORKS CONSTRUCTION USE WITH STANDARD SPECIFICATIONS FOR PUBLIC WORKS CONSTRUCTION R E I N U Q E M E E R F N E R T CR O D t (300 mm) 12" t (100 mm) 4" R AND COVER MANHOLE FRAME ON 2 SIDES OF 2 EXTRA #4 (#13M) AND COVER MANHOLE FRAME CATCH BASIN SCORING LINE FLOW LINE A I STEPS A A FACE PLATE LOCATION TIE W STRUCTURAL DATA WALL AND SLAB DIMENSIONS AND REINFORCEMENT REQUIREMENTS 3.5' (1.0 m) 8' (2.4 m) 3.5' (1.0 m) 7' (2.0 m) 7' (2.0 m) 14' (4.0 m) 6' (1.8 m) 6' (1.8 m) 8' (2.4 m) 8' (2.4 m) 4' (1.2 m) 4' (1.2 m) 10' (3.0 m) 6" (150 mm) 8" (200 mm) 10" (250 mm) 6" (150 mm) 6" (150 mm) 6" (150 mm) 6" (150 mm) 6" (150 mm) 6" (150 mm) 6" (150 mm) 6" (150 mm) 6" (150 mm) 10" (250 mm) 10" (250 mm) 8" (200 mm) 8" (200 mm) 8" (200 mm) 8" (200 mm) 8" (200 mm) 8" (200 mm) 8" (200 mm) 8" (200 mm) 8" (200 mm) 8" (200 mm) N O R E I N F O R C E M E N T R E Q U I R E D REINFORCMENT REQUIRED IN MAX W MAX V t t F (75 mm) 3" #4 (#13M) 8" (200 mm) 90° STEPS CURB FACE + H V t F B OPTIONAL SUBGRADE (75 mm) 3" R (100-300 mm) 4"-12" t 4 1/2" CURB LINE CONST JOINT (TYP) OPTIONAL ROUGHENED t DOWEL (TYP) 12' (3.6 m) 12' (3.6 m) 12' (3.6 m) 12' (3.6 m) (115 mm) CONNECTOR PIPE OR MONOLITHIC CATCH BASIN CONNECTION 2 STANDARD PLAN OF SHEET STANDARD PLANS FOR PUBLIC WORKS CONSTRUCTION STANDARD PLANS FOR PUBLIC WORKS CONSTRUCTION CURB OPENING CATCH BASIN NOTES: 1. WHERE THE BASIN IS TO BE CONSTRUCTED WITHIN THE LIMITS OF EXISTING OR PROPOSED SIDEWALK OR IS CONTIGUOUS TO SUCH SIDEWALK, THE TOP SLAB OF THE BASIN MAY BE POURED EITHER MONOLITHIC WITH THE SIDEWALK OR SEPARATELY, USING THE SAME CLASS OF CONCRETE AS IN THE BASIN. WHEN POURED MONOLITHICALLY, THE SIDEWALK SHALL BE PROVIDED WITH A WEAKENED PLANE OR A 1" (25 mm) DEEP SAWCUT CONTINUOUSLY AROUND THE EXTERNAL PERIMETER OF THE CATCH BASIN WALLS, INCLUDING ACROSS THE FULL WIDTH OF THE SIDEWALK. SURFACE OF ALL EXPOSED CONCRETE SHALL CONFORM IN SLOPE, GRADE, COLOR, FINISH, AND SCORING TO EXISTING OR PROPOSED CURB AND WALK ADJACENT TO THE BASIN. 2. ALL CURVED CONCRETE SURFACES SHALL BE FORMED BY CURVED FORMS, AND SHALL NOT BE SHAPED BY PLASTERING. 3. FLOOR OF BASIN SHALL BE GIVEN A STEEL TROWEL FINISH AND SHALL HAVE A LONGITUDINAL AND GRADE. SLOPE FLOOR FROM ALL DIRECTIONS TO THE OUTLET. 4. DIMENSIONS: V = THE DIFFERENCE IN ELEVATION BETWEEN THE TOP OF THE CURB AND THE INVERT OF THE 3, BUT SHALL NOT BE LESS THAN CURB FACE PLUS 12" (300 mm). INLET, NOTED ON THE PLANS. W = NOTED ON THE PLANS. A = THE ANGLE, IN DEGREES, INTERCEPTED BY THE CENTERLINE OF THE CONNECTOR PIPE AND THE CATCH BASIN WALL TO WHICH THE CONNECTOR PIPE IS ATTACHED. 5. PLACE CONNECTOR PIPES AS INDICATED ON THE PLANS. UNLESS OTHERWISE SPECIFIED, THE CONNECTOR PIPE SHALL BE LOCATED AT THE DOWNSTREAM END OF THE BASIN. WHERE THE CONNECTOR PIPE IS SHOWN AT A CORNER, THE CENTERLINE OF THE PIPE SHALL INTERSECT THE INSIDE CORNER OF THE BASIN. THE PIPE MAY BE CUT AND TRIMMED AT A SKEW NECESSARY TO 3" (75 mm) RADIUS OF ROUNDING OF STRUCTURE CONCRETE, ALL AROUND, ADJACENT TO PIPE ENDS. A MONOLITHIC CATCH BASIN CONNECTION SHALL BE USED TO JOIN THE CONNECTOR PIPE TO THE CATCH BASIN WHENEVER ANGLE "A" IS LESS THAN 70° OR GREATER THAN 110°, OR WHENEVER THE CONNECTOR PIPE IS LOCATED IN A CORNER. THE OPTIONAL USE OF A MONOLITHIC CATCH BASIN CONNECTION IN ANY CASE IS PERMITTED. MONOLITHIC CATCH BASIN CONNECTIONS MAY BE CONSTRUCTED TO AVOID CUTTING STANDARD LENGTHS OF PIPE. 6. STEPS SHALL BE LOCATED AS SHOWN. IF THE CONNECTOR PIPE INTERFERES WITH THE STEPS, THEY SHALL BE LOCATED AT THE CENTERLINE OF THE DOWNSTREAM END WALL. STEPS SHALL BE SPACED 12" (300 mm) APART. THE TOP STEP SHALL BE 7" (175 mm) BELOW THE TOP OF THE MANHOLE BACKWALL. 8. THE FOLLOWING SPPWC ARE INCORPORATED HEREIN: 308 MONOLITHIC CATCH BASIN CONNECTION 309 CATCH BASIN REINFORCEMENT 310 CATCH BASIN FACE PLATE ASSEMBLY AND PROTECTION BAR 312 CATCH BASIN MANHOLE FRAME AND COVER 635 STEEL STEP 636 POLYPROPYLENE PLASTIC STEP B = 3'-2" (970 mm) UNLESS OTHERWISE NOTED. CATCH BASIN AT THE OUTLET. 4.5' (1.35 m) UNLESS OTHERWISE NOTED). H = 2" (50 mm) UNLESS OTHERWISE NOTED. V = THE DIFFERENCE IN ELEVATION BETWEEN THE TOP OF THE CURB AND THE INVERT AT THE U I V = THE DIFFERENCE IN ELEVATION BETWEEN THE TOP OF THE CURB AND THE INVERT OF THE AND PROJECT 2-1/2" (65 mm). ALL OTHER STEPS SHALL PROJECT 5" (125 mm). 7. DOWELS ARE REQUIRED AT EACH CORNER AND AT 7' (2.0 m) ON CENTER (MAXIMUM) ALONG THE FACE PLATE ASSEMBLY STREET, GUTTER, OR LOCAL DEPRESSION SURFACE #4 @ 12" (#13M @ 300 mm) EACH WAY 1/4" (5 mm) R 3" R (75 mm) 1/4" (5 mm) R CLEAR 1" (25 mm) 3H:2V SLOPE (100 mm) 4" R PLAN CURB DOWEL DETAIL CLEAR (TYP) 1" (25 mm) SECTION A-A (TYP) DOWEL CURB FRONT WALL REAR WALL BOTTOM SLAB END WALL 2 2 CURB OPENING CATCH BASIN 300-4 300-4 8%, IN WHICH CASE THE LONGITUDINAL SLOPE OF THE FLOOR SHALL BE THE SAME AS THE GUTTER LATERAL SLOPE OF 1V:12H MINIMUM AND 1V:3H MAXIMUM, EXCEPT WHERE THE GUTTER GRADE EXCEEDS UPSTREAM END OF THE BASIN. IT SHALL BE DETERMINED BY THE REQUIREMENTS OF NOTE ENSURE MINIMUM 3" (75 mm) PIPE EMBEDMENT, ALL AROUND, WITHIN THE CATCH BASIN WALL, AND FOR W > 28' (9 m), V > 12' (3.6 m) OR B > 4' (1.2 m), SEE PLANS 21' (6 m) AND 28' (9 m) REV. 1992, 1996, 2009, 2021

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