By a maximum load of 14,3 lbs/ft2 or 70 kg/m2 (evenly distributed), the following requirements to supporting the trays must be met: The bench trays must supported every 20 inch or 500 mm interval. A support is placed at max. 3 inch or 70 mm from the glue rim.
IMPORTANT: This MUST be under the tray part WITH glue lip, see as an example the drawing. A support is placed at 8 inch or 200 mm. from the edge of the tray. Notice the sump (A), which can NOT rest on the sub support.