SECTION A-A SECTION B-B CATCH BASIN No. 8 PLAN OF CATCH ...

6" Bedding
of #57
Aggregate
2"x" Strap
Variable
See Sht. 2/2 for NOTES
A
2"x 1" Bar
6:1
Outlet pipe
8"
" min. clearance
between grate and
frame at upper edge
37"x2"x"
2
1"x1"x" (min.)
Pipe
pedestal angle (Typ.)
SECTION A-A
Outlet
B
2"x" Strap
B
Strap
2’-8"
8"
2 "x " Strap
6:1 Variable
B
B
8"
2’-8"
PLAN OF CATCH BASIN
2 "x1" Bar
6"
1"x1"x" (min.)
pedestal angle
Angle
C
C
Permissible con-
struction joint
Bottom slab may be precast
separately and the outlet
placed on top of it with the
bottom shaped to drain
Notch, bend and
weld angle
8"
Notch, bend and
weld angle
6" Bedding of
#57 Aggregate
Upper box may be precast
or cast-in-place. If precast,
set in a bed of mortar.
3 "
A
8" 2’-8"
8"
"x6" bolt insert per CMS 712.01
at 18" spacing or ferrule loop with
partial depth resin bonded
anchors (typ.)
CATCH BASIN No. 8
Variable Depth
6"
8"
6" Bedding
of #57
Aggregate
NOTE: 1"x1"x"
pedestal angles
not shown
20:1
"
8"
3" 1"
Bar
8:1
Outlet
pipe
Strap
SECTION B-B
SECTION THRU HALF OF GRATE "C"
Notch strap over
angle seat
A
2 "x1" bar
2’-8"
2" Four Bars at 4" c/c 2"
"
2"x" Strap
A
8" Normal
(6" Precast)
SECTION C-C
8"
2 "
1" "
2 "
3"
12:1
2" strap
3"x2"x" angle
1"x1"x" pedestal
angle (min.)
Permissible
construction
joint
STATE OF OHIO DEPARTMENT OF TRANSPORTATION
STANDARD HYDRAULIC CONSTRUCTION DRAWING
SCD NUMBER
REVISIONS
ROADWAY
HYDRAULIC
ENGINEER
O FFICE O F
C A TC H BA SIN No. 8
C B-3.3
1 2
STATE HYDRAULIC ENGINEER
7-20-01
7-19-02
7-15-05
7-20-12
1-18-13
Cozzoli
Matt
ENGINEERING
HY D RA ULIC

Edge of
pavement
7’-6" min.
Ditch Erosion Protection
Ditch Erosion
Protection
Variable Slope
150’
Ditch Erosion Protection
150’
Flowline of ditch
See RIPRAP CUTOFF WALL DETAIL
Finish concrete apron
to match slope
PLAN
center of earth dike
3"
VERTICAL SCALE DISTORTED
PROFILE
MEDIAN GRADING AT CATCH BASIN
5’
Concrete apron
with cutoff wall
7’ min. to
8’-0"
1’-0"
6" Concrete apron
1’-0"
to center of earth dike
Median centerline
UPSTREAM END VIEW OF
CONCRETE APRON OR GROUTED RIPRAP
5’
Catch basin
7’ min.
Rounded
12:1 Slope or flatter
Catch basin
Centerline
of ditch
6" Dike unless
Rounded
otherwise noted
Variable
Slope
CONSTRUCTION INFORMATION
Typical weight of grate = 245 lbs.
Typical weight of frame = 65 lbs.
NOTES
GRATE AND FRAME: Use structural steel according to CMS 711.01
and 513. Provide a design essentially the same and equally as
strong as the one shown.
GRATE: Depress the grate 3" below the upstream end of the
concrete apron at the centerline of the ditch.
WALLS: Construct brick or cast-in-place walls with a nominal
thickness of 8" from the bottom slab to the upper box.
PRECAST CONSTRUCTION: Permitted, except for the apron.
Meet the concrete requirements of CMS 706.13. Provide precast
walls at least 6" thick with sufficient reinforcing to permit
shipping and placement without damage. Reduce the wall
thickness from the outside.
STEPS: Provide steps meeting the requirements SCD of MH-1.1
where the depth exceeds 6’.
BASINS OVER 12 FEET DEEP: Use precast or cast-in-place
concrete; reinforce with #4 bars on 12" centers both vertically
and horizontally with 2" clearance from inside wall face.
LOCATION AND ELEVATION: When given on the plans the location
is at the center of the grate. The elevation is the lowest
point on the grate.
OPENINGS: Obtain the Engineer’s approval for any pipe openings
greater than 4" from the outside of the pipe to the structure.
Fill any voids per CMS 611.
CONCRETE APRONS: Construct aprons in such a manner that the
outside edges are at equal elevations.
If specified in the plans, grouted riprap may be used in place
of the concrete apron.
DITCH PROTECTION: Provide a 150’ length of ditch erosion
protection as shown. Installation and payment for the ditch
erosion protection are per CMS 670.
BASINS IN SAG: When in a sag, omit the earth dike and longitudinal
slope of grate, and provide concrete apron and ditch protection
on each side of the basin.
PAYMENT: The concrete apron with cutoff wall or grouted riprap
and dike are incidental Item to 611 - Catch Basin, No. 8.
However, the apron is not required when Item 611 - Catch Basin,
No. 8, Without Apron, is specified.
When itemized separately, payment for Item 601 Riprap using
6" Reinforced Concrete Slab includes the cost of the cutoff
wall.
2’-6"
9"
9"
Cutoff
wall
Undisturbed soil
As per CMS 601.04.D, reinforce the slab
approximately midway between the top
and bottom of the slab, with steel bars
or fabricated reinforcement equivalent
to #3 round bars, at 24" o.c. in two
directions, or wire fabric according to
SCD BP-1.1.
6" Reinforced
concrete slab
RIPRAP CUTOFF WALL DETAIL
STATE OF OHIO DEPARTMENT OF TRANSPORTATION
STANDARD HYDRAULIC CONSTRUCTION DRAWING
SCD NUMBER
REVISIONS
ROADWAY
HYDRAULIC
ENGINEER
O FFICE O F
C A TC H BA SIN No. 8
C B-3.3
2 2
STATE HYDRAULIC ENGINEER
7-20-01
7-19-02
7-15-05
7-20-12
1-18-13
Cozzoli
Matt
ENGINEERING
HY D RA ULIC