Fairbanks Aegis Heavy Capacity PLF-6200-HQ Series - Manual (Page 10)

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The pit frame accessory is a one-piece welded unit with no additional welding required. This
accessory is designed for in-floor applications. In general, a hole is cut in the concrete, the
pit-frame accessory is installed in the hole, then concrete is poured around and under the
frame. Once cured, the scale platform is set into the frame and installation can be completed.
Heavy duty frames are available in mild steel for all Aegis Heavy Capacity (HC) floor scale
sizes. The concrete work and frame setting is usually done by a contractor, with a scale
technician completing the project by setting and installing the scale.
1. Place the pit frame in the approximate position it will occupy on the floor.
2. Mark out the position of the hole to be made. The hole MUST be a minimum of 12"
larger than the pit frame on all sides. Should pit drainage be required, slope the pit
floor to an installed drain while maintaining a level area at each corner. Use the
drawing in Appendix III for measurements.
3. The hole will have to be deep enough to accommodate the pit coping, plus the
thickness of the pit floor. Use the drawing in Appendix III for measurements.
4. Once the properly sized and prepared hole has been cut in the concrete floor, use
these steps to help set the frame properly.
• Set the frame in the hole supported at about the correct height.
• Set two 2 x 4's on edge (longer than the width of the hole) across the opening
• Use soft wire and make 2 loops by twisting wire around each 2 x 4 and the
frame
• With the frame supported by the wire and 2 x 4's, use a level to set the frame
flush with the surrounding floor, level, and at the correct height by twisting or
untwisting the wire
• Use the drawing in Appendix III for measurements, concrete specifications,
rebar placement, and amount of convrete
50637 / SJ4799 10 08/02 Issue 2
Caution:
Heavy duty frames require substantially more concrete work and preparation than standard
duty frames. Rebar and properly rated concrete is required to accept the pier loading which a
20K scale will have. Use drawing, 21897, included in this manual in Appendix III.