Table 1. Strength tests of ESP-90 lumber
WEYERHAEUSER, Barnesville, Georgia
April 10, 1998
Preliminary Bend and Break Test of ESP-90 2x4's
Board |
Pounds |
MOE |
1 |
49,600 |
152 |
2 |
38,000 |
164 |
Weyerhaeuser standard MOE is 105. Weyerhaeuser standard M-19 is 14,400; Standard M-27 is 22,050. Both 1 and 2 are southern pine
August 31, 1998
Pull Break Test of ESP-90 2x4's
| Board | Pounds |
| O | 55,000 |
| O | 49,400 |
| O | 43,100 |
| O | 29,800 |
| O | 39,800 |
| Average | 43,420 |
| X | 46,300 |
| X | 41,700 |
| X | 43,100 |
| X | 56,400 |
| X | 48,500 |
| Average | 47,200 |
| Poplar | 51,600 (Hardwood check) |
Weyerhaeuser standard for their M-19 boards is 14,400; standard for their M-27 is 22,050.
Logs were harvested September 1997 and sawed October 1997. They were air-dried only. O = 10" log, southern pine X = 13" log, southern pine