**Definition**

**Uso Fiume: **

a chamfered beam with a constant thickness and a square or rectangular cross-section obtained through the mechanical squaring of a log containing the pith, continuous and parallel from the base to the tip on four sides.

*Note: The chamfering must be within the tolerances indicated below. Examining the beam on all four sides along its entire length, where the 4 chamfers are at their largest, these must have a minimum width equal to 1/3 of the cross-section, up to a maximum of 9/10 of the same. Elements with chamfering of less than 1/3 of the cross-section (as described above) must meet the requirements set forth by Harmonized Standard UNI EN 14081-1. *

Uso Trieste:

a chamfered beam with a square or rectangular cross-section obtained through the mechanical squaring of a log containing the pith,

continuous from the base to the tip on four sides, following the tapering of the log itself.

*Note: The chamfering must be within the tolerances indicated below. Examining the beam on all four sides along its entire length, where the 4 chamfers are at their largest, these must have a minimum width equal to 1/3 of the cross-section, up to a maximum of 9/10 of the same along the entire length of the beam. Elements with chamfering of less than 1/3 of the cross-section (as described above) must meet the requirements set forth by Harmonized Standard UNI EN 14081-1.*