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Engineering Testing - Text prepared by Stress Engineering
Services
SUMMARY OF TESTS PERFORMED ON THE SAFETY BOOT®
PERFORMED FOR
SAFETY MAKER, INC.
PERFORMED BY
STRESS
ENGINEERING SERVICES
HOUSTON TEXAS
W. T. Asbill, P.E.
JULY 15, 2002
STRESS ENGINEERING
SERVICES (SES) IS A MULTI-DISCIPLINE ENGINEERING COMPANY THAT SERVES A
VARIETY OF INDUSTRIES. ONE OF THE SERVICES PROVIDED BY SES IS A TEST
FACILITY IN WHICH A VARIETY OF PRODUCTS ARE TESTED.
A
SERIES OF TESTS WERE PERFORMED FOR SAFETY MAKER ON THEIR SAFETY BOOT®. THE PURPOSE OF THE TESTS WERE TO DETERMINE THE MAXIMUM
LOAD THE BOOT AND FLOOR ASSEMBLY COULD WITHSTAND. THE TESTS WERE PERFORMED
ACCORDING TO OSHA 1926.502 WHICH IS A CONSTRUCTION REGULATORY GUIDE FOR
FALL PROTECTION GUARDRAIL SYSTEMS. THIS GUIDE REQUIRES THAT THE GUARDRAIL
SYSTEM MUST BE ABLE TO WITHSTAND A FORCE OF 200 POUNDS AT A HEIGHT OF 42”
ABOVE THE FLOOR.
A
NUMBER OF TESTS WERE PERFORMED USING A VARIETY OF BOLTS AND SUBFLOORS.
BELOW IS A TABLE AND PLOT THAT SUMMARIZES SOME OF THE TEST RESULTS. IN ALL
TESTS SHOWN, THE SAFETY BOOT ASSEMBLY EXCEEDED THE OSHA REQUIREMENT OF 200
POUNDS FORCE. THE TESTS HAVE SHOWN THAT IT IS IMPORTANT TO HAVE THE
CORRECT COMBINATION OF LAG BOLT SIZE, WASHER SIZE, NUMBER OF LAG BOLTS AND
FLOOR MATERIAL THAT THE SAFETY BOOT IS ATTACHED TO. SOME FLOOR MATERIALS,
SUCH AS PLYWOOD LESS THAN 1-1/8” THICK AND OSB, ARE INSUFFICIENT BY
THEMSELVES AND MUST HAVE ADDITIONAL SUPPORT (2” PINE BOARD) FOR THE BOLTS
TO PENETRATE. WITH THE ATTACHMENT COMBINATIONS
SUMMARIZED, THE SAFETY BOOT EASILY EXCEEDED THE OH&S MINIMUM REQUIREMENT.
|
|
FENDER WASHER |
SUBFLOOR MATERIAL |
MAX. FORCE LBS. |
1: Room |
3/8" X 3" |
3/8" X 1-1/4" |
23/32" Sturd-I-Floor® Plywood & 2" X 10" Yellow
Pine |
488 |
2: Room |
3/8" X 3" |
3/8" X 1-1/4" |
23/32" Sturd-I-Floor® Plywood & 2" X 10" Yellow
Pine |
502 |
3: Room |
3/8" X 3" |
3/8" X 1-1/4" |
23/32" Sturd-I-Floor® Plywood & 2" X 10" Yellow
Pine |
467 |
4: 0 F |
3/8" X 3" |
3/8" X 1-1/4" |
23/32" Sturd-I-Floor® Plywood & 2" X 10" Yellow
Pine |
680 |
5: -13 F |
3/8" X 3" |
3/8" X 1-1/4" |
23/32" Sturd-I-Floor® Plywood & 2" X 10" Yellow
Pine |
574 |
6: -15 F |
3/8" X 3" |
3/8" X 1-1/4" |
23/32" Sturd-I-Floor® Plywood & 2" X 10" Yellow
Pine |
542 |
7: Room |
3/8" X 2" |
3/8" X 1-1/4" |
2" X 10" Yellow Pine |
420 |
8: Room |
3/8" X 2" |
3/8" X 1-1/4" |
2" X 10" Yellow Pine |
407 |
9: Room |
3/8" X 2" |
3/8" X 1-1/4" |
2" X 10" Yellow Pine |
435 |
10: Room |
3/8" X 2" |
3/8" X 1-1/2" |
2" X 10" Yellow Pine |
337 |
11: Room |
3/8" X 2" |
3/8" X 1-1/2" |
2" X 10" Yellow Pine |
405 |
12: Room |
3/8" X 2" |
3/8" X 1-1/2" |
2" X 10" Yellow Pine |
430 |
13: Room |
3/8" X 2" |
3/8" X 1-1/2" |
1-1/8" Sturd-I-Floor® Plywood |
387 |
14: Room |
3/8" X 2" |
3/8" X 1-1/2" |
1-1/8" Sturd-I-Floor® Plywood |
530 |
15: Room |
3/8" X 2" |
3/8" X 1-1/2" |
1-1/8" Sturd-I-Floor® Plywood |
504 |
