9/8" Stainless Steel Frame—Deep Pit Application

It is absolutely necessary the framing members be installed accurately, in a level plane. We cannot be responsible for problems caused by incorrect frame installation.

1. If grating has been shipped installed within the frame, remove grating from frame by removing hold-down screws with an allen wrench. If there are multiple sections of grading, be sure sections are marked to insure proper installation. Grating sections are not interchangeable.

2. Grease hold-down screws to prevent bonding into concrete. Place hold-down screws through the threaded holes in frame and extend at least 1/2". This will allow the frame screws to be reinstalled when concrete has hardened.

3. To help facilitate concrete finishing in the bottom of the pit, remove cross supports from the frame by removing alignment screws at each end.

4. Form 1-1/4" minimum depth recess below top of horizontal leg of frame, slope as required to drain or sump. Minimum depth from finished floor elevation is 2-3/4".

5. Set top of frame at finished floor elevation or provide recess as required for floor covering. Block securely in place to avoid movement during concrete placing and finishing operations. Before mortar is setup, be sure the sides of the frame are straight, and corners at the correct angles. Check inside dimensions of frame against drawing measurements at several places to be sure size is correct. REMEMBER—the grate is made to fit snugly into the frame according to the drawing dimensions. Use spreaders if necessary to hold frame at correct dimensions.

6. After concrete has cured, back off greased hold-down screws and reinstall cross supports. Shim them at 1’O" intervals, leaving a maximum gap of 3" between the end of the cross supports and the first shims. Anchor cross supports to concrete at all shim locations using anchors provided.

7. Install grating in frame as follows:

a. Place stainless steel screws in all hold-downs on grate sections. Use plastic washers provided to hold screws in lock-downs before putting grates in recess. DO NOT attempt to put screws in by prying apart wires and installing from the top of the grating.

b. Reinstall grate sections in proper location (refer to shop drawing), and tighten hold-down screws.