The test results showed that the sample group 1 at 1200 mm., the average capacity is 1800 mm. size: 55.30 KN, KN is the average size of 2400 mm and 55.22. the average strength stood at 48.94 KN and 2 samples that size 1200 mm. The average capacity is 1800 mm. size: 59.74 KN, KN, and the average was 54.83 size 2400 mm. average strength stood at 50.77 KN.
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