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RSP TEST RESULTS & CONCLUSIONS
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FOR
PLAY MART, INC.
(RECYCLED STRUCTURAL PLASTICS)
MECHANICAL ENGINEERING TESTING LAB AT LEHIGH UNIVERSITY, BETHLEHEM,PA.
MAY 1998 C.J. COGHLAN
RSP 3.1 TEST: PLASTIC LUMBER BENDING TESTS - 1998 RSP PMI IN-HOUSE TEST: MINI DECK LOADING TESTS - 2001 |
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3.1 TEST: PLASTIC LUMBER
BENDING TESTS - (STRUCTURAL RESISTANCE TO BENDING) |
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MATERIAL & SIZE |
MAXIMUM LOAD |
MAXIMUM STRESS |
BENDING MODULUS |
|
WOOD 2 X 4 |
2834.75 LBS. |
6106.92 psi. |
10,689,413 psi |
|
RSP 2 X 4 |
2128.23 LBS. |
3691.15 psi |
1,136,508 psi |
|
WOOD 1 X 6 |
680.84 LBS. |
6106.92 psi |
6,455,095 psi |
|
RSP 1 X 6 |
1178.06 LBS. |
3583.11 psi |
1,342,644.3 psi |
| WOOD 2 X 6 |
1980.26 LBS. |
4440.57 psi |
7,215,713 psi |
| RSP 2 X 6 |
2672.57 LBS. |
3090.17 psi |
1,084,108 psi |
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RSP is stronger than wood in some tests. |
RSP is more flexible than wood. |
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CONCLUSION 1: RSP IS ULTIMATELY STRONGER THAN WOOD IN MAXIMUM LOADING IN TWO TESTS, BUT REMAINS MORE FLEXIBLE WITH LESS
RESISTANCE TO BENDING. (SEE TESTS WITH STEEL INSERTS FOR HORIZONTAL BEAM APPLICATIONS.) |
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3.1.5 Conclusions: "From these results, it is evident that RSP beams are more flexible and fail at lower stresses than their wooden counterparts." |
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PMI IN-HOUSE TEST 2001: PLASTIC LUMBER BENDING TESTS
- (STRUCTURAL RESISTANCE TO BENDING) CURRENT MINI DECK WITH NO STEEL INSERTS - LOADING TEST. |
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PMI MINI DECK 2001 |
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DECK MATERIAL SIZE |
MAXIMUM LOAD |
MAXIMUM LOAD DURATION & TEMPERATURE |
MAXIMUM DEFLECTION |
RSP 5/4" X 6"
FRAMES & TOPS |
1000 LBS. LIVE & DEAD LOADS |
100 HOURS |
PASSED WITH 1/240 DEFLECTION |
DECK SIZE
23" X 30" X 7" |
200 PSF. |
60 TO 100 DEG. F. FLUCTUATION |
NO FAILURE |
| DECK SUPPORTS SIZE (4) - 3.5" X 3.5" X 10" |
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| HARDWARE SIZES |
DECK TOP HARDWARE - (48) #10 X 2.5" SS SQUARE DRIVE DECK SCREWS. |
DECK FRAME HARDWARE - (24) #10 X 3" SS SQUARE DRIVE DECK SCREWS. |
POST & FRAME HARDWARE - (8) 3/8" X 4" SS HEX DRIVE LAG BOLTS. |
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CONCLUSION 2: RSP IS STRONG IN MAXIMUM LOADING IN MINI DECK TESTS, DUE TO CLOSER JOIST SPACING IN THE DECK DESIGN, AND PASSED A 200 PSF LOADING TEST, DOUBLE THE CODE REQUIREMENT FOR MANY COMMERCIAL APPLICATIONS. |
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RSP STRUCTURE IS FLEXIBLE & SAFER, WITH APPROPRIATE DESIGN FOR RECYCLED MATERIALS. |
