Table 2: Comparison on tested ultimate strength of specimens.

Specimens Tested Ultimate Strength Pt(kN) Statistic Analysis of Pt
Mean value of Pt
(kN)
Holes influence
AC-11-SH-1 56.55 54.84 9.58%
AC-11-SH-2 54.90
AC-11SH-3 55.15
AC-11-SH-4 53.10
AC-11-SH-5 57.45
AC-11-SH-6 51.90
AC-21-SH-1 56.85 54.70 9.82%
AC-21-SH-2 55.40
AC-21-SH-3 56.85
AC-21-SH-4 52.75
AC-21-SH-5 52.50
AC-21-SH-6 53.85
AC-12-SH-1 51.45 52.15 14.02%
AC-12-SH-2 53.10
AC-12-SH-3 54.60
AC-12-SH-4 50.25
AC-12-SH-5 51.30
AC-12-SH-6 52.20
AC-22-SH-1 50.30 50.46 16.81%
AC-22-SH-2 48.95
AC-22-SH-3 51.20
AC-22-SH-4 52.05
AC-22-SH-5 49.85
AC-22-SH-6 50.40
AC-00-NH-1 61.03 60.66 /
AC-00-NH-2 60.28