6.3.2   Checking the loads to the timber beams
The coils rest on timbers of 20 x 20 cm cross-section with a length of t = 270 cm. The loaded length from each coil is r = 140 cm. With the extension of (t - r) = 130 cm and the load of 6.8 t the necessary section modulus for each beam is taken from the diagram in Figure 16 with about 1100 cm³.

The beams have a section modulus of 1217 cm³ (Table 1). Also the extension of 130 cm is well within permissible limits.


dimensions in cm 10 x 10 12 x 12 15 x 15 20 x 20
section modulus in cm³     152 263 513 1217

Table 1: Section modules of timber beams (with 3 % shrinkage)
 
 

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