Damage

Mechanical and fire damages can be taken into account when checking masonry and reinforced masonry structures in KAMIN. If the considered structure has damages, you have to check the respective checkbox on the General tab to open the Damage tab where you can specify the relevant information. The damages are classified and specified in compliance with the Recommendations [5] and SP 427.1325800.2018.

If there are mechanical damages, check the respective checkbox and select a damage type from the list. The following damage types are available:

• cracks in some of the bricks which do not cross the mortar seams;
• hairline cracks which cross not more than two masonry courses (15–18 cm long);
• hairline cracks which cross not more than four masonry courses (up to 30–35 cm), the number of cracks being not more than four per 1 m of width (thickness);
• cracks opened by up to 2 mm which cross not more than eight masonry courses (up to 60–65 cm long), the number of cracks being not more than four per 1 m of width (thickness);
• cracks opened by up to 2 mm which cross more than eight masonry courses (over 65 cm long);
• local (edge) damage of masonry up to 2 cm deep (fine cracks, spot peeling) and formation of vertical cracks at the ends of supports of beams, trusses, and lintels which cross not more than two courses of masonry (up to 15–18 cm long);
• local (edge) damage of masonry up to 2 cm deep (fine cracks, spot peeling) and formation of vertical cracks at the ends of supports of beams, trusses, and lintels which cross not more than four courses of masonry (up to 30–35 cm long);
• edge damage of masonry over 2 cm deep and formation of vertical and oblique cracks at the ends and under supports of beams and trusses which cross more than four courses of masonry (over 30 cm long).

If there are fire damages, check the respective checkbox and select a type (on one side, or on two sides) and depth of the fire damage of the masonry.

The presence of the damage is accounted for by changing the geometric sizes of a structural member (in case of fire damages) and reducing the design strength of the masonry.