Polylok Product Catalog

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141

INSTALLATION IN SOIL OR NON-TRAFFIC LOAD BEARING APPLICATIONS

ROTO-FLOWS

A trench drain design and layout should be prepared prior to

installation. Include discharge outlets in design. Trench drains

should pitch away 1” per 20 feet from a building. Polylok trench

channels accept leveling blocks to aid in installation, or rebar can

be installed and wire-tied to aid in leveling the channel. Tees

and 90º accessory fittings are available.

1. Clear the area of all debris where the trench is to be installed.

2. Set-up the area with grade stakes and lines for grade control.

3. Excavate the trench area two inches deeper than trench depth.

4. Make trench width wide enough to accept and align trench drain.

5. Install a sand base in trench channel and level; do not use

excavated soil.

6. Check leveling and alignment of trench sections to ensure

grate is at grade.

7. Install grates and connect the trench sections to required

distance.

8. Trench sections may require removal of some installed screws

to lift grate to connect the trench sections together. Re-install

screws.

9. Install trench end cap and outlet cap to the discharge outlet

pipe. If discharging from bottom, use two end caps.

10. The trench grate should be covered with tape to seal out any

sand before the final fill to stabilize the trench.

11. There are several final fill materials that can be used to seal

in the sides and ends of trench drains. Some materials have trade

names, but many common filler materials can be used in this

application. Interlocking shaped sizes that can be compacted

down and stabilize the trench drain in position, such as crushed

stone, is ideal. Do not use excavated soil.

12. After final trench leveling and backfilling, remove tape from

the grate and ensure screws and grates are tightly secured.

Note: The above instructions are for non load-bearing applications

and will not accept vehicle loads and are for drainage only

applications. Additional instructions for H-20 load applications

are also availble.

Note: These instructions are for installers who are familiar with

excavation techniques and have experience with installations of

these or similar products.