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SPREAD LOADS THAT 27/200 FORM TRAPEZOIDAL SHEETS CAN CARRY (Kg/m2)

Joist Spacing (m) Galvanized Sheet Thickness (mm)
  0.5 0.6 0.7 0.8 0.9 1.0 1.2
1.20 465 555 643 730 817 901 1068
1.40 342 408 472 537 600 662 785
1.60 262 312 362 411 459 507 601
1.80 207 247 286 325 363 401 475
2.00 168 200 231 263 294 325 385
2.20 138 165 191 217 243 268 318
2.40 116 139 161 183 204 225 267
2.60 99 118 137 156 174 192 228
3.00 67 80 93 105 118 130 154
Moment of Inertia (J:cm4/m) 12.79 15.24 17.66 20.05 22.40 24.72 29.27
Moment of Resistance (W:cm3/m) 05.08 06.05 07.02 7.97 8.91 9.83 11.65

Safety Stress = 1200 kg/cm2. The calculations are based on a continuous beam shape.