General
All materials, labor, and equipment necessary to install a precast, sloped or neutral, chemical resistant polymer concrete trench drainage system as specified and as shown on the working drawings shall be included. Install Smith Drainage Systems in strict accordance with manufacturer's recommendations and shop drawings.

Related Work
Work specified in other sections includes, but is not limited to: excavation and backfill, cast-in-place concrete, and mechanical equipment.

System Description
Modular trench drainage system precast from a corrosion resistant polymer concrete including interlocking modular components for on-site installation.

Quality Assurance
Manufacturer shall submit test results from an independent testing laboratory stating the uniform live compressive load in accordance with FAA specification AC 150/5320- 6B for drainage channel sections. When requested, manufacturer shall have approval of United States Department of Agriculture (USDA).

Submittals
Manufacturer will submit, when required, shop drawings showing a schematic plan of the total drainage system listing all parts being provided with exact centerline dimensions suitable for installation. Copies of the manufacturer's recommended method of installation, assembly, and anchorage shall be submitted for review.

Products
Manufacturer shall be Jay R. Smith Mfg. Co., Montgomery, Alabama.

Product Description

Product shall be the Channel Slope® Precast Polymer Concrete System including grates of a material recommended by the manufacturer. Trench drain channels shall be precast, sloped or neutral and interlocking, incorporating either polyester or vinylester resins and formulated aggregate, with recesses for grating lockdown devices molded into the channel walls. Recesses shall be formed from the same material as the channel.

Channels shall not have any projecting surfaces within 2" of the top surfaces.

Unit Width	6.1"
Unit Depth	5.4" to 12.5"
Internal Width	3.9"
Unit Length	39.38"
System Slope	.06%
Compressive Strength	14,500 psi
Flexural Strength	2,900 psi
Water Absorption	not to exceed 1%

Channel profile shall include positive interlocking tongue and groove connections (male and female joining ends) which can be sealed to provide water tight connections.

Locking device recesses are formed into the reinforced channel walls. All locking device recess material of construction shall be polymer concrete.

Quicklock® locking device is provided with selected grates. Quicklock® insures proper and secure grate lock down each time the grate is replaced in the trench.

The QuickLock® grates shall have a non-removal factory pressed stainless securing lug with mating stainless steel spring clip locking bar.

All precast polyester polymer concrete one meter units shall have a .6% built-in slope and shall have a preformed vertical 4" and flumed 6" knock-out on the bottom of the unit.

Site Preparation
Install Smith Drainage Systems in strict accordance with manufacturer's recommendations and shop drawings. Excavate the area for channel placement wide and deep enough to accommodate the standard channel size and a minimum of 4" concrete encasement on both sides as well as underneath the channels. Channels require a minimum of 4" of support and the top of the grate must be evenly aligned with the surface of the surrounding slab. (Note: The thickness of the concrete encasement must be at least as thick as the slab and never less than 4".)

Installation
Channel sections are installed from the outlet end of the system working from either catch basins or deeper channel sections to shallow channel sections. Insert channels from above to allow ends to interlock. Channel sections shall be placed on brick, rebar basket, Channel Chairs, Channel Brace, or low slump concrete, grout slurry, or suspended to obtain correct finished elevation. Cutting will be made, if required, by masonry saw. Temporarily place grate in channel to avoid compression during concrete placement.

Concrete Pour
Protect grates and channel interior during pouring of concrete. Place concrete in a manner that will not dislodge the channels. Concrete shall be at finished level or 1/8" above the top of the channel to ensure efficient drainage and adequate channel edge protection.

Finishing and Clean up
Following final set of concrete, remove grate protection, place grates in final position and engage locking bolts in correct location.