HomeMy WebLinkAbout237.00removable watertight
coupling or flange
2" min.
I' 'I
max.
plate welded to elbow
with orifice as specified
ELBOW
RESTRICTOR
elevation per plans /
1' min. under
pavement 16" max.
6" min. desiqn W.S.
elbow restrictor, see detail
pipe supports
see Note 6
1.5 x D
TT
T
min.
dutlet pipe
D
�
1
see notes 1 &
invert and elevation
per plans
welded restrictor plate
with orifice diameter as
specified (not needed if
for spill control only)
2' min.
c
E
v 12„
12"
o c
E
v 12„
SECTION A -A
2' min. clearance
to any portion of frop-T
including elbows
NOTES: A
1. Use a mimimum of a 54" diameter type 2
catch basin.
2. Outlet Capacity: 100 -Year developed
peak flow.
3. Metal Parts: Corrosion resistant.
elbow restrictor
Non -Galvanized parts perferred. see detail
Galvanized pipe parts to have asphalt
treatment 1.
4. Frame and ladder or steps offset so:
A. Cleanout gate is visible from top.
B. Climb -down space is clear of riser and
cleanout gate.
C. Frame is clear of curb.
5. If metal outlet pipe connects to cement
concrete pipe: outlet pipe to have smooth
O.D. equal to concrete pipe I.D. less 41'-
6. Provide at least one 3" X .090 gage support bracket anchored to concrete wall.
(maximum T-0" vertical spacing)
7. Locate elbow restrictor(s) as necessary to provide minimum clearance as shown.
S. Locate additional ladder rungs in structures used as access to tanks and vaults to
allow access when catch basin is filled with water.
angle as
necessary
see note 7
2' min.
PLAN VIEW
frame & solid cover
marked "DRAIN" with locking bolts
see note 3
vertical bar
grate for
secondary inlet
handholds, steps or
ladder
inlet
dipe
shear gate with control
rod for cleanout/drain
(rod bent as required
for vertical alignment
with cover)
additional ladder rungs
(in sets) to allow access
to tanks or vaults when
catch is filled with water
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+'Y Y + PUBLIC WORKS FLOW RESTRICTOR STD. PLAN - 237.00
DEPARTMENT OIL POLLUTION CONTROL
TEE MARCH 2008