Clean out to grade
on inlet pipe of each
unit (by others)
Clean out to grade
on outlet pipe of each
unit (by others)
Flow
Flow
Risers to grade
EXCAVATION AND BACKFILL DETAIL
(INTERIOR OR EXTERIOR)
2-Way cleanout
tee (by others)
2-Way cleanout
tee (by others)
SIDE VIEW DETAIL
Optional Anchor kit
see detail
Optional Anchor kit
see detail
Concrete slab
Native soil
Crushed aggregate
or sand
Optional Anchor kit
see detail
30"
60"
4"
the unit footprint
Concrete Pad
must extend
18" outside
45.00°
2 1/2" Min.
18" outside the unit footprint
Concrete Pad must extend
8"
4"
Rebar
Finished Grade
Rebar
GB-250
Shown
CONCRETE SLAB DETAIL FOR TRAFFIC LOADING
(INTERIOR OR EXTERIOR)
(GB-250 Shown)
Top View
Elevation View
Stainless steel
anchor strap
Stainless steel
Anchor plate
Stainless hardware
ANCHOR KIT INSTALLATION DETAIL
Anchor Kit Installation Steps
Slide "Anchor Strap" over tie down point on end wall and
1.
bolt together using provided hardware.
Bolt "Anchor Strap" to "Anchor Plate" using provided hardware
2.
Hold down force achieved by backfill weight acting on Anchor Plate.
3.
4. Anchor Plate may be bolted to concrete slab, if required, by using
holes provided in Anchor Plate.
For unit details see specification sheet for selected unit
(Connecting pipe and fittings by others)
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 OR EXTERIOR BELOW GRADE INSTALLATION INSTRUCTIONS
(GB-35 (INTERIOR ONLY), GB-50, GB-75, GB-125, GB-250)
CONNECTIONS
Connect waste piping to the unit. When connecting GB-75 (2), GB-250 (2), GB-250 (3) and
1.
GB-250 (4) see sheet #5 for multiple unit installation instructions.
BELOW GRADE INSTALLATION INSTRUCTIONS
EXCAVATION
Install unit(s) as close as possible to fixtures being serviced.
1.
Width and length of excavation shall be minimum 12" 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. When setting GB-75 (2),
GB-250 (2), GB-250 (3)and GB-250 (4) all units must be level.
Anchor kit is recommended for installations in high water table conditions to
5.
prevent float out. To be determined by specifying engineer. If necessary,
order optional "Anchor Kit" (see detail right).
BACKFILLING & FINISHED CONCRETE SLAB
Preparation of sub grade per geotech recommendations.
1.
Stabilize and compact sub grade to 95% proctor.
2.
Fill tank with water before backfilling to prevent float out during piping installation.
3.
Before backfilling and pouring of slab secure cover(s) and riser/s (if necessary) to the unit(s)
4.
Backfill using crushed aggregate material approximately 3/4" size rock, or sand,
5.
with no fines.
6. Place 6" aggregate base under slab. Aggregate should be 3/4" size rock, or sand, with no fines.
7. Thickness of concrete around cover to be determined by specifying engineer. If traffic
loading is required the concrete slab dimensions shown are for guideline
purposes only.
8. Concrete to be 28 day compressive strength to 4000 PSI.
9. NO. 4 rebar ( 1/2") grade 60 steel per ASTM A615: connected with tie wire.
10. Rebar to be 2 1/2" from edge of concrete.
11. Rebar spacing 12" grid. 4" spacing around access openings.
12. All pipe penetrations to be sleeved or have slip connections.
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:
3 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
