Stefano Guandalini

Punching Tests of Slabs with Low Reinforcement Ratios

Vcal, kN Vt /Vcal Eq. (4b) fu /fy PG-1 260 210 1.50 573/656 27.6/34.5 1023 1.72 1.028 — 1045 0.979 PG-2b 260 210 0.25 552/612 40.5/50.6 440 0.19 — 1.109 365 1.205 PG-4 260 210 0.25 541/603 32.2/40.2 408 0.23 — 1.115 373 1.094 PG-5 260 210 0.33 555/659 29.3/36.6 550 0.35 — 1.187 495 1.111 PG-10 260 210 0.33 577/648 28.5/35.6 540 0.37 — 1.123 490 1.102 PG-11 260 210 0.75 570/684 31.5/39.4 763 0.75 1.163 — 833 0.916 PG-3 520 456 0.33 520/607 32.4/40.5 2153 0.29 — 1.167 1876 1.148 PG-6 130 96 1.50 526/607 34.7/43.4 238 1.25 1.075 — 268 0.888 PG-7 130 100 0.75 550/623 34.7/43.4 241 0.66 1.133 — 212 1.137 PG-8 130 117 0.28 525/586 34.7/43.4 140 0.23 — 1.116 131 1.069 PG-9 130 117 0.22 525/586 34.7/43.4 115 0.19 — 1.116 108 1.065 Average ratio 1.065 Standard deviation 0.089