GB-15
GB-20
GB-25
GB-20 Shown
16" Max.
GB-20 Shown
2,500 lb.
Max. load
Riser (sold separately)
Rebar
GB-20 Shown with Riser
2,500 lb.
Max. load
GB-20 Shown
450 lb.
Max. load
NOTES:
Schier grease interceptors are rated and manufactured with an internal flow control system already in
place. They do not require an external flow control system or air intake vent.
Schier grease interceptors are not to be installed in any other manner except as shown. Consult local
codes for separate trapping requirements, cleanout locations and additional installation instructions.
INTERIOR BELOW GRADE INSTALLATION INSTRUCTIONS
(GB-15, GB-20, GB-25)
EXCAVATION
Install unit(s) as close as possible to fixtures being serviced.
1.
Width and length of excavation shall be minimum 6" greater
2.
than the tank on all sides.
Depth of excavation shall be 6" deeper than tank bottom.
3.
Set the tank in well-packed crushed aggregate material
4.
approximately 3/4" size rock, or sand, with no fines.
CONNECTIONS
Connect waste piping to the unit.
1.
BACKFILLING & FINISHED CONCRETE SLAB
Before backfilling and pouring of slab secure cover(s) to the unit(s).
1.
Backfill using crushed aggregate material approximately 3/4" size rock or sand
2.
with no fines.
3. Place 6" aggregate base under slab.
INTERIOR ABOVE GRADE INSTALLATION INSTRUCTIONS
(GB-15, GB-20 GB-25)
If concrete slab falls within body of unit, reinforce with rebar,
extending 6" beyond footprint of unit to connect main floor slab.
When the jobsite requires burying unit flush with floor without using
a riser kit, maximum cover/unit top load rating is 450 lbs.
Concrete
Crushed aggregate or sand backfill
Native soil
CONNECTIONS
Install unit as close as possible to fixture(s) being served.
1.
Connect waste piping to the unit.
2.
DATE:
11/1/10
GREAT BASIN INSTALLATION, OPERATION
AND MAINTENANCE GUIDE
Schier Products
9500 Woodend Rd
Edwardsville, KS 66111
Tel: 800-827-7119
Fax: 800-827-9664
www.schierproducts.com
Made in the U.S.A
DESCRIPTION:
DWG BY:
TEU
REV:
3 - 11/07/11
SHEET NUMBER:
4 of 7
MATL:
PE
THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF
SCHIER PRODUCTS
. ANY REPRODUCTION IN
PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF
SCHIER PRODUCTS
IS PROHIBITED.
PROPRIETARY AND CONFIDENTIAL
