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Advanced Support Products, Inc. page 1 of 1 <br />Results of Friction Coefficient Test <br />March 8, 2000 <br />Russ Engineering Group, Inc. <br />7600 GSRI Avenue <br />Baton Rouge, La. 70820 <br /> <br />Eight (8) base assemblies were tested for coefficient of static friction. The tests were <br />performed by Professional Service Industries, Inc. in their laboratory in Pittsburgh, Pa. <br />Three configurations were tested on four different surfaces. <br /> <br />The three assemblies were: <br />- HDPE Base <br />- HPDE Base on Rubberized Bearing Pad (Epoxied to the base) <br />- HPDE Base on Rubberized Bearing Pad (Non-Epoxied) <br /> <br />The four surfaces were: <br />- Dry Concrete <br />- Wet Concrete <br />- Dry Rubber Membrane <br />- Wet Rubber Membrane <br /> <br />A fifty (50) pound weight was placed on the center of the base assembly. A Chantillon <br />Digital Force Gauge, Model #DRC 100, was used to pull the base. The horizontal force <br />required to put the base into motion was then recorded. The coefficient of static friction is <br />simply the horizontal force in pound divided by 50 pounds. <br /> <br />The results of the above test are tabulated as follows: <br /> <br />HDPE Base <br />Test No. Surface Condition Force Applied Coefficient of Friction <br />1 Dry Concrete 32.2 0.64 <br />2 Dry Concrete 30.8 0.62 <br />3 Dry Concrete 30.9 0.62 <br />4 Dry Concrete 29.1 0.58 <br />5 Dry Concrete 29.3 0.59 <br />Average 30.5 0.61 <br />HDPE Base/Rubberized Pad (Epoxied) <br />Test No. Surface Condition Force Applied Coefficient of Friction <br />1 Dry Concrete 51.4 1.03 <br />2 Dry Concrete 49.8 1.00 <br />3 Dry Concrete 50.5 1.01 <br />4 Dry Concrete 52.6 1.05 <br />5 Dry Concrete 50.6 1.01 <br />Average 51.0 1.02 <br />HDPE Base/Rubberized Pad (Non-Epoxied) <br />Test No. Surface Condition Force Applied Coefficient of Friction <br />1 Dry Concrete 37.7 0.75 <br />2 Dry Concrete 38.4 0.77