Container Handbook: 6.5.2 Checking the loads to the steel beams

6.5.2 Checking the loads to the steel beams

The coil rests on two steel beams of 18 x 18 cm and a length of t = 500 cm with intermediate layers of timber dunnage for increasing the friction. The loaded length from the coil is r = 100 cm. With the extension of (t - r) = 400 cm and the load of 12 t, the diagram in Figure 17 provides the necessary section modulus of just over 390 cm³.

Each beam has a section modulus of 426 cm³ (Table 2). Also the extension of 400 cm is well within permissible limits of 480 cm in this case.

Figure 17: Required section modulus for steel beam bedding

dimensions in cm	12 x 12	14 x 14	16 x 16	18 x 18
section modulus in cm³	144	216	311	426

Table 2: Typical section modules of IPB steel beams