ABT, Inc. • PO Box 837 • 259 Murdock Road • Troutman, NC 28166
(800) 438-6057 • (704) 528-9806 • Fax: (704) 528-5478

> PolyDrain > Installation > PolyClip I Method

Installation with PolyClip I

The PolyClip I consists of: 1) two securing clips (one for each side of the channel) 2) a threaded crossrod that keeps the PolyClip I secured to the channel; and 3) a "U"-shaped, no-float support leg that maintains proper channel height and prevents channel flotation during the concrete pour. PolyClips I, when properly attached to channels, will maintain proper channel alignment and increase system rigidity by drawing the channel joints together.

Excavate trench as previously described, allowing approximately six inches clearance under the channel.
Set a stringline to the finished slab height at the outside edge of the proposed channel location. Allow 1-3/16" (30 mm) for frame height if frames are used.
Layout channels in numerical sequence upside-down along side the trench.
If sealant is used, apply it to channel joints at this time.
Starting at the deep end, butt channel sections together. Assemble the two brackets to the sides of channel ends as shown, by backing the wingnuts to the end of the threaded crossrod and spreading the clips to their limit. Install PolyClips I on channels per diagram. Temporarily hand tighten the wingnuts.
Position channel sections in the trench right side-up. Starting at the discharge end, adjust the channel sections to the correct slab height as shown by the stringline by sliding the no-float leg up or down on the PolyClip I. Tighten the wingnuts to secure final position.

Connect a PolyClip I to the upstream end of the last channel positioned. Position the next channel, and spread the clip assembly so the next upstream channel can be attached. Continue this procedure until all upstream channels have been properly positioned.
The end channels in each run will require a PolyClip I to be installed on the anchor rib and not at the end of the channel.
Before initiating the concrete placement, insure that all channels are properly positioned for slab height and alignment in the trench.
To guarantee that channels will not float, several methods can be used to secure them to the subgrate:
A. Two stage concrete placement — Anchoring concrete should be placed over the no-float legs (minimum two inch depth) across the entire width and length of the excavation. Allow the concrete to set hard.
B. Rebar anchoring — Drive a length of #3 or #4 rebar diagonally throughthe holes provided in the no-float leg on both sides of the channel.
C. Weld, nail or screw the no float legs to form work.

Caution should be taken to direct the concrete placement under the channels, not directed at channel sidewalls, thus insuring that proper channel alignment is maintained.