الخصائص الفيزيائية لخشب العرعر البربري المستعمل في قلعة الجزائر

الملخص EN

The study aims to identify the physical characteristics of the Berber thuja wood used in roofing and strengthening building'swalls of the Algiers Citadel.

Knowing the material's characteristics used in construction is a helpful means to uncover the location and the method of their use, and how do they interact and be affected negatively and positively with the environment.

For that, we took two samples of wood used in roofing a room in Beys's place where we relied on the French standards dated in 1989 to do the analyzes.

The results show that the samples have a good properties despite they were been through more than 500 years, and they are classified as dry wood with an estimated moisture rate of less than 12 ℅, although they are located near to the sea.

This confirms the effectiveness of their treatment and drying before using, they have also a weak shrinking from all directions, which reduces cracking and allows their dimensions to remain stable, and they have a medium inflation due to their low orption of moisture so that they have a weak affection by it.

These characteristics and others ones contribute to their preservation despite the long use and the variety of the damaging factors which they were exposed to.