St. Mark’s Church’s Rehabilitation

FACTSHEET
Project: Study of pathologies and restoration of issue of San Marcos de Porcuna (Andalusia, Spain).
Location: outside the walls. Porcuna (Andalusia, Spain)
Start date: January 2012
Date of completion: March 2013
Architect: Pablo Manuel Millan Millan
Promoter: Parish Church of Nuestra Señora de la Asunción de Porcuna (Andalusia, Spain)
Construction: Ilustre Ayuntamiento de Porcuna (Andalusia, Spain).
Photo: Pablo Millan, architects

A WORLD OF PATHOLOGIES
Cracks by sinking of the ground, especially in the façade at the northeast corner. These, after a visual analysis, it is concluded may be due to the sinking of the ground cover overload after the intervention carried out in the 1980s and 1990s. More logical and correct with a view to their rehabilitation intervention would be removing the cover of concrete (forging of precast beams of concrete and Hollow bricks) and the implementation of one of the original wooden-like features, we dismiss it at the moment for being economically not acceptable by the property and benefactors. Also, after examining the terrain surrounding this point, North facades and East or main, is observed allows movement of the land as a place of accumulation of water after rains. Another element that analysed as such pathology cause seems to be the presence of two elm trees (Ulmus minor or campestris), which given its root aggressiveness in the basement, are attractive agents of humidity and therefore sources of instability. Even as he has demonstrated in similar cases, given the situation of the same in a dry, sunny area you can that they have expanded under structures or roots among its elements looking for freshness, whereas the joint mortar for the walls is Earth mingled with more or less abundant contributions from cal.

    For this pathology is prescribed, as exercise time and tried to slow down the process of deterioration:

  1. First: Elimination of the two immediate trees, including drying complete the roots to prevent regrowth of shrubs by treatment with glyphosate injected with several holes in the trunks. (See technical requirements for the application of the herbicide).
  2. Second: Construction of a pavement (two equally spaced meters) of lime and gravel washed concrete perimeter of about 20 cm. singing making timely slopes so that stormwater be channeled and away from the boot of the walls. If necessary is can provide a layer of neutral soil suitably compacted through irrigation and Rammer. An elastic element, or a narrow band of weaker mortar that impedes thrusts or pathologies to the wall can be placed in contact with the original walls of the Hermitage. (Warns that for this intervention, it is not necessary, nor is prescribed recess of soil and thus excavation, which would have archaeological caution)
  3. Third: Location of witnesses of gypsum in cracks more pronounced as elements of control and registration of evolution of the pathology.
  4. Fourth: Elimination of parterres and nearby vegetations, waterproofing front paved pavement cleaning of wounds and Grout of lime and sand, pavement areas unpaved and channelling the waters for their proper disposal.
  5. Fifth: Review of damaged tiles, with special care for the broken carcasses and cleaning of evacuation, as well as general cleaning of roof.

Damp in the lintel of the entrance and cracks in it. Because the Texas movement break these, and possible breakage of the channel that collects the water after the belfry, leaks and humidity occurred in the lintel of the entrance.

    The following interventions will be prescribed for this condition:

  1. First: Recovery of Texas lost in the perimeter to the belfry areas as well as the cleaning of the canal.
  2. Second: Recovery and cleaning of two drainage points.
  3. Third: Location of witnesses of gypsum in cracks more pronounced as elements of control and registration of evolution of the pathology.
  4. Fourth: Location of any deterrent preventing the ascent to the roof of people who may break or move the tiles.

Moisture and cracks in santeria. Shows the State of precariousness in which is located the santero House as well as the side of the Church shared by both rooms. Cracks, being of lesser relevance that the referenced above, may be due also to the process of collapse of the ground humidity and overload.

    For these pathologies and the conservation of this stay is generally prescribed:

  1. Total cleaning of the land adjacent to it, removing all the elements added, which besides not adding anything to the understanding of the whole picture of neglect and abandonment.
  2. Screed of enclosure with stone or plant items that prevent vandalism and therefore access to dependencies and roof of the aforementioned church.