Complex sentence: Many of the houses and small shops were over 40 years old and constructed in a taquezal architectural style construction with weak wooden beam construction with adobe or stone plaster with with the erosion resulting from their age rendered the buildings defenceless to the disaster.
Split into simpler sentences: Many of the houses and small shops were over 40 years old and constructed in a taquezal architectural style construction with weak wooden beam construction with adobe or stone plaster. With the erosion resulting from their age rendered the buildings defenceless to the disaster.