{"id":520,"date":"2015-11-19T16:45:56","date_gmt":"2015-11-19T16:45:56","guid":{"rendered":"http:\/\/esg.pt\/seismic-v\/?page_id=520"},"modified":"2015-11-19T17:16:32","modified_gmt":"2015-11-19T17:16:32","slug":"region-2","status":"publish","type":"page","link":"https:\/\/esg.pt\/seismic-v\/region-2\/","title":{"rendered":"Region 2"},"content":{"rendered":"
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The historic seismic activity of the Costa Alentejana is guided by the elevated intensity of the earthquakes of 1755, 1858, 1903 and 1969. The 1858 earthquake, with a local epicentre, hit the region with high intensity (IX MCS).<\/p>\n

Alca\u0301cer do Sal was selected as a case study, because of its location in an area of regular seismic activity and due to the identification of several vernacular buildings, with evident seismic-resistant elements. The identified buildings are single storey with gable roofs, have reduced dimensions, and have a rectangular floor plan. The buildings are usually aligned in rows, addorsed on the tops in orthogonal alignment.<\/p>\n

Constructively, a mixed technique is used of stone masonry and rammed earth, generally reinforced with a row of brick. In some cases, a common-use stone bench (poial) is present in front of the di erent housing units. The internal partitioning is accomplished through transversal walls with the \u2018gaioleiro\u2019 system. In addition, tie-rods were incorporated into the alignment of the transversal walls.<\/p>\n

The Municipality of Melides was selected due to its seismic history and unique constructive culture; mainly outside the town centre. This constructive culture is based on the improvement of traditional constructive systems and the use of seismic-resistant elements. The identified buildings are single storey with gable roofs, have small dimensions, and a rectangular floor plan.<\/p>\n

The plan organization is simple with a rectangular configuration. The exterior walls are built in rammed earth, forming a monolithic structure, complemented by the introduction of buttresses, and combined with reinforced base plinths. The buildings have the distinction of simultaneously containing other reinforcing elements, such as, metal tie-rods and stone benches.<\/p>\n<\/div>\n

\nIdentified reinforcement elements<\/strong><\/p>\n\n\t\t