|Stonel Associates, Inc.
25 Flint Ridge Road
Monroe, CT 06468
Report No. 0221.3 Date: 07-MAR-01
Re: Polylok Riser - P/N 3009 and Lid - P/N 3009C
Test Conducted For: Polylok Inc.
Tests performed At: United Concrete Products, Inc.
Tests Witnessed By: George E. Nelson on 21-FEB-01
Items Tested: Four (4) Riser columns with Lids, secured and equally spaced, in a common six (6) inch slab of concrete. Each column consists of seven (7) HDPE injection molded Risers and one (1) HDPE injection molded Lid. Each Riser column is 20 inches in diameter and 42 inches in height. The Riser and Lid joints contain foam seals and all sections are secured together with number 10 x 1 1/2 inch long stainless steel sheet metal screws.
Object of Testing: On one Riser column, to determine the side pull force required to cause catastrophic top Riser failure, measured with a Dillon 10,000 pound Dynamometer, while the fourth Riser is firmly supported against the pulling force.
Findings: A two-ply heavy-duty nylon sling was positioned on one column
in the upper area of the seventh (top) Riser. The fork of a 10 ton heavy
duty lift truck was positioned against the top of the fourth Riser, in
line with the nylon sling. The sling was linked to a 6,000 lb. capacity
Lug-All rachet cable puller next to the Dynamometer and the loose end
was secured on the frame of the lift truck.
George E. Nelson