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This wall system illustrates a typical load-bearing low to mid-rise mass masonry rubble wall. The 16” wall consists of uncoursed, squared rubble stone that typically rests on a stone foundation below grade. This wall could also consist of exterior wythes of coursed rubble stone with an interior of rubble fill. The mass of masonry deflects bulk water penetration but is understood to take on a percentage of moisture that is free to evaporate slowly from the mortar joints on either side of the wall over time. The wall is topped with a saddle copestone that prevents water penetration and has drips at either underside edge to direct water away from running down the façade.
