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Rigid reinforced concrete walls defined around the basement floors stories of the buildings are not considered as part of the curtain shearwalls or curtainshearwall-framed systems in Table 4.1 .
As shown in the picture below, in a building with 2 basement floors storşes and 5 normal floorsstories, no curtain shearwall is defined except for rigid basement walls. Rigid basement curtains shearwalss are not taken into account analysis when selecting the load-bearing system of such a building according to Table 4.1 . For this reason, the bearing system of the building shown below can be classified as buildings in which all earthquake effects are carried by reinforced concrete frames with high (or limited) ductility level .
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