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Schier | SI-75 Installation Guide
Below Grade Installation Slab Requirements
A concrete slab to finished grade with rebar is required when installing
interceptor below grade.
Pedestrian Traffic or
Greenspace Areas
Vehicular Traffic Areas
4" min.
slab
8" min.
slab
Hydrostatic/
Pressure Slabs
When installed under a
hydrostatic slab (slab
designed to withstand
upward lift, usually caused
by hydrostatic pressure)
interceptor must be
enclosed in a watertight
concrete vault.
concrete slab subject to hydrostatic pressure
watertight
concrete
vault
SPECIAL PRECAUTIONS
For Schier Solids Interceptor Installations - Failure to follow this guidance
voids your warranty
High Water Table
Installations
Interceptors and risers are not
designed to withstand water table
height in excess of the top of the
unit when buried (see figure). If it is
possible for this to occur, install the
interceptor and risers in a
water-tight concrete vault or
backfill with concrete or flowable fill
(wet concrete and flowable backfill
should be poured in stages to
avoid crushing the interceptor). At
risk areas include but are not limited to tidal surge areas, floodplains
and areas that receive storm water. Billy Goat™ models that are direct
buried in high water table scenarios must be installed with an anchor kit.
Model SI-75 uses model AK1 anchor kit.
DO NOT
COMPACT
BACKFILL
max water table height
for direct burial
model AK1
anchor kit
Rebar
Rebar
Max Water Level
Risers are not designed
to retain water
Installations with Risers
Corrugated Riser Pipe
Requirements
Riser adapter model CA2 must be
used when installing interceptors
using 24" diameter corrugated
pipe as a riser. This will adequately
embed the cover adapter in the
concrete slab, preventing
cover/cover adapture failure
under traffic rated loads.
CA2
3 FCR2 Risers Max
94"
94"
94"
6 - 94"
6 - 94"
6 - 94"