Measurement of the tie beam in the middle of its span does not show significant decreases in
wood mass (Figure 9), although even this element is on its surface infected.
Figure 9. Drilling resistance – tie beam in the middle of the span
The results of drilling resistance measurements in the area of beam placing (see Figure 10) point
to the damage wood mass with decay to the depth of 25 mm. This is caused due to the increased
moisture, which is caused by the lack of air circulation in this area.
Figure 10. Drilling resistance – tie beam in the area of placing
In local areas, especially in places of tie beams placing and wall plates occurs due to low air
circulation, and rainwater leaking wood infestation with decay. Locally in areas of water leaking
there is a total destruction of wood mass.
In the area of the roof truss placing on the wall plate over which is the damaged roof deck
constructions was locally excessive rainwater leaking onto the roof elements.
As can be seen in Figures 11 and 12 it is the complete loss and damage of wood mass in this area.
The wood loses in this place consistency (firmness) and free falls off.
Figure 11. Water leaking area
– damage of wood caused by decay
Figure 12. Water leaking area –
damage of wood caused by decay – detail
